Back-end developer (Nest.js)

Budget: 15000 UAH Deadline: 14 days

Hello!

I am a full-stack developer, managing projects at Oria Agency. I work closely with the stack - NestJS + TypeScript, PostgreSQL, and have already done integrations with Supabase (authorization, database) and Stripe through it. I will also set up Swagger for Orval so that the front end generates the current client. I see nothing overly complicated in assembling a clean and scalable architecture. I can provide a more accurate rate if you show me the screens; I would like to take a look at the volume.

I look forward to collaborating.
Best regards,
Andrey Voznyak

Budget: 1234 UAH Deadline: 1 day

Hello! I can develop the backend for the project, but instead of NestJS, I would suggest considering Python + FastAPI since FastAPI automatically generates the OpenAPI specification, which will allow us to always keep the current version without needing to spend time on documentation maintenance.
But we can also implement it on NestJS.
Message me privately - we can discuss the details regarding the stack and work :)

Budget: 4000 UAH Deadline: 1 day

Good day!
In general, the task is clear, but to provide an accurate response regarding deadlines and pricing, I would like to clarify some questions that arose after analyzing your task.
Please write in private messages – we will discuss the details and your wishes.

Budget: 4500 UAH Deadline: 2 days

Hello.

I am a NodeJS developer. I have experience working with Stripe. Write to me, and we will discuss.

Budget: 25000 UAH Deadline: 14 days

Good day.

The categories of databases and web programming are indicated absolutely correctly. This is a specialized combination for developing the server side and designing the application architecture.

I am ready to take on the development of a REST API on NestJS for your new project. I have confident practical experience working with TypeScript and a deep understanding of the Nest ecosystem.

I am well acquainted with integrating Supabase: I will set up reliable authentication, proper interaction with PostgreSQL, and connect the Stripe payment gateway. I will definitely prepare a detailed and always up-to-date specification through Swagger OpenAPI, so your frontend developer can easily generate the client through Orval.

I pay special attention to API security, data validation, and route protection. I guarantee a clean, structured, and scalable architecture that will be easy to maintain in the future.

Budget: 15000 UAH Deadline: 14 days

Hello, Dmitry!

Instead of examples in words — a working NestJS stand, you can poke around right now: https://guardlabs.online/demo/nestjs-api/docs — live Swagger (14 endpoints, JWT authorization with Guards, DTO + class-validator, TypeORM, CRUD with pagination). This is exactly the type of specification from which your frontend developer generates the client through Orval — the ApiProperty and ApiResponse decorators keep it up to date automatically, there will be no desynchronization between the docs and the code.

Regarding your stack: NestJS + TypeScript — the main tool; PostgreSQL — yes; Supabase — I worked with auth (JWT Supabase verification on the Nest side through Guards, RLS policies) and with the database; Stripe through Supabase — webhooks and subscription status synchronization. I build the architecture modularly: module/controller/service/repository, configuration through ConfigModule, input validation, e2e tests on critical flows.

Two questions to provide an exact rate for the volume: the technical specifications mention screens, but there are no attachments in the project — please send them; and clarify, is auth planned to be fully on Supabase or do you need your own role model on top?

I work through Safe, step by step: first the framework + auth + Swagger, so the frontend can start generating the client in the first days, then — domain modules in blocks.

The cost below is a guideline; I will fix the exact figure right after receiving the screens. Expand

Budget: 27000 UAH Deadline: 30 days

Hello, I am a senior developer.
Similar projects
I worked on the online taxi project iQTaxi, where I also developed the administrative part with the dispatch system.
For the last three years, I have been working on the online delivery project Qwqer.eu, where I also handled the backend, designed the API for the warehouse system, and integrated it into the existing admin part of the delivery backend.
Feel free to write, I would be happy to discuss all the details.
I understand that an hourly rate is not convenient, but I work according to the following system: specifications, estimation, deadlines, and cost.
You do not have specifications, but if we base it on the screenshots, it is approximately 100-120 hours of work.
The rate is negotiable; I suggest starting at $20/hour.

Budget: 10000 UAH Deadline: 5 days

Good day! I will complete it turnkey. I have experience in implementing such projects. I guarantee the completed work. The exact cost will be calculated after discussing all the details. Shall we discuss?

Budget: 10896 UAH Deadline: 4 days

Good day.
I regularly work with Nest, Postgres, integrated Stripe API, PayPal, Monobank API, built microservice architecture (RabbitMQ + Docker).

My GitHub: https://github.com/DanyloUserGit?tab=repositories
My rate for this job is $240.
I would be happy to collaborate.

Budget: 27000 UAH Deadline: 31 days

📌Hello.👋
⭐️My name is Andrey.
⭐️My work experience: 12 years+

• ➡️I can show works specifically on Nest.js
• 🎨Portfolio: Freelancehunt
• ✅Work rating on Behance (over 600,000 views)
• 💼More works here: Dribbble

Budget: 10000 UAH Deadline: 3 days

Hello. I have been working with React/Next.js/Nest.js/Node.js for over 9 years. Do you have a detailed technical specification for the backend for an accurate assessment of costs and timelines?

Budget: 2000 UAH Deadline: 2 days

Hello. Dmytro Stotyka!

I have added my previous work.

I seamlessly utilize unique features of Supabase, such as Supabase RLS and Edge Functions.
I will complete your project for 2000 UAH.
Thank you.

Budget: 999 UAH Deadline: 1 day

Dmytro, I see the task for a new NestJS project with Swagger, Supabase, and Stripe — it's important to establish a clean architecture right away so that the API is easy to maintain and scale. I have worked with Laravel and Vue, so I have a good understanding of backend structure, validation, security, and database integrations. I can quickly dive into TypeScript/NestJS and help create a stable REST API with an up-to-date OpenAPI specification. I am ready to discuss the details and the format of the assessment regarding the screens.

Budget: 2000 UAH Deadline: 7 days

Hello, I worked on a SaaS platform — REST API on NestJS + PostgreSQL + Supabase authentication, ~15 endpoints with complete Swagger documentation and Stripe integration for payments.

I’m curious to know — what specific screens do you have in mind? Will it be an admin panel, user dashboard, or something else? This will help better understand the scope and architecture.

I suggest we get in touch; I will provide you with a free technical consultation and we can create a development plan + I will tell you about my team!

Budget: 15000 UAH Deadline: 30 days

Hello, Anatoly 👋.
Great idea to start with a simple MVP without payments and calendars to quickly test demand in Dubai. I am a full-stack developer and often create similar marketplaces with personal accounts, so the task is very clear to me. I suggest using the stack of Next.js, NestJS, and PostgreSQL, and making the districts of Dubai a strict list for convenient searching and SEO. We will complete it in 35 days, with a budget of $2500. This amount includes design, development of both parts of the site, admin panel, notifications, basic SEO optimization, and deployment on the server. After the release, I provide one month of free support. I handle all the work from architecture to code myself. I will show examples of similar platforms in our correspondence. I suggest breaking the process into stages with intermediate presentations. I would be happy to know if you already have drafts for the visuals or if we are designing everything completely from scratch.

Budget: 27000 UAH Deadline: 30 days

Good day, we have been specializing in website development and promotion since 2018.
We have extensive experience working with various websites and online stores.
We perform high-quality technical SEO audits.
I suggest filling out the brief to create a commercial proposal for you.
Website development brief - https://lionex.com.ua/s/brief-na-rozrobku-saitu
Online store - https://lionex.com.ua/s/brief-na-internet-magazyn
Landing - https://lionex.com.ua/s/brief-na-lending
SEO - https://lionex.com.ua/s/brief-na-seo-audyt
We also offer a cool platform for quick text rewriting - https://textory.com.ua/go/kFoMHu3N
You can also check out our work on the site. If you have any questions, feel free to reach out, and we will gladly provide consultation.

Budget: 10000 UAH Deadline: 10 days

Good day, I have been working in web programming for over 9 years. I work with REST APIs, frameworks, and CMS such as Django, Laravel, Yii2, WP, OpenCart, CodeIgniter, etc. I am ready to complete the task. Reviews: Freelancehunt

Budget: 8000 UAH Deadline: 7 days

Good day! I am interested in your project. I have experience in developing backend systems in Python, working with REST APIs, PostgreSQL, integrating external services, and building scalable architecture. I am also developing my own AI project with over 120,000 lines of code and more than 300 modules. I work with modern development approaches, API documentation, and clean architecture. I am ready to familiarize myself with the requirements in detail, discuss the architecture, and propose an optimal solution. I would be happy to collaborate.

Budget: 9000 UAH Deadline: 14 days

Hello, Dmitry! I studied the attached dashboard screens (B2B panel with Stripe transactions, users, and schedule calendar) with great interest. The task of designing a clean, scalable architecture on NestJS for this functionality is very familiar to me.

My stack includes TypeScript, Node.js, NestJS, and Supabase (PostgreSQL). I often work alongside frontend developers, so I clearly understand your requirements for quality API documentation.

I propose the following technical and architectural solution for your task:

1. Architecture and Swagger (OpenAPI) for Orval:
I will set up auto-generation of OpenAPI specifications in NestJS using the nestjs/swagger module. I will strictly type all incoming and outgoing DTOs (Data Transfer Objects) using ApiProperty and validate them through class-validator. This will allow your frontend developer to generate a fully typed API client through Orval with one click and eliminate any type discrepancies between the frontend and backend.

2. Integration with Supabase & PostgreSQL:
I have deep practical experience working with Supabase. I will set up reliable JWT authorization and authentication (Guards in NestJS), design a clean PostgreSQL table schema (one-to-many and many-to-many relationships for users, payments, and calendar), and write Row-Level Security (RLS) policies to protect data at the database level.

3. Integration with Stripe:
I will develop a secure payment module: generating payment sessions (Stripe Checkout) and a reliable Webhook event handler in NestJS with mandatory webhook signature verification. Upon successful payment, the script will automatically update the user's subscription status in the Supabase database.

4. Calendar and Scheduler:
I will design a performant data schema for your event calendar considering time zones (UTC offsets) and CRUD operations.

My cost and timeline estimate (based on your 7 screens):
• Total cost for backend development turnkey (MVP): $1,400 USD.
• Timeline: 14 days (including writing tests and Docker configuration).
• Approximate cost for one ready module (Auth, Stripe, Calendar, CRM tables): ~$200 USD.

I write strictly typed, clean, and scalable code, covering key logic with unit tests. I will prepare clear instructions for running via docker-compose.

I am ready to show examples of my code on GitHub and discuss database design details in a call. I look forward to collaborating! Expand

Budget: 15000 UAH Deadline: 1 day

Good day. I am interested in your offer. I specialize in website development using both Nest.js and Next.js (full stack). I have worked with databases such as MongoDB and MySQL. I have knowledge and skills in working with pure JavaScript and TypeScript. You can view my projects on GitHub. I also have two more projects planned. I have completed all projects solo. I am constantly improving. You can check my GitHub in my profile. I would be happy to collaborate!

Budget: 15000 UAH Deadline: 12 days

Hello, I can complete your task in the shortest time possible, with clear coding style and quality. Write to me!

Budget: 25000 UAH Deadline: 14 days

Website: **https://prydatko.site**

Hello! I have over 5 years of commercial experience in web development. I work with TypeScript, Node.js, REST API, PostgreSQL, Docker, and modern server application architecture. I have experience in designing APIs, integrating authentication, working with databases, and documenting through Swagger/OpenAPI. I am also familiar with NestJS, Express/Fastify, and payment system integration.

My projects and portfolio: **https://prydatko.site**

Regarding pricing, it is more convenient to evaluate the work based on the provided screens and technical specifications. After reviewing them, I can provide a fixed price for the implementation of each screen/module and estimated timelines for completion.

Budget: 4500 UAH Deadline: 7 days

Hello. I will take the first agreed backend module: REST API on NestJS, PostgreSQL/Supabase, validation, authorization, and an up-to-date Swagger schema for client generation via Orval.

I have working TypeScript/Node.js APIs, Postgres, Supabase Auth, and full-stack products. Stripe is implemented as a scaffold, without live payments, so I will separately check the payment block in the test environment.

Please send the screens and the list of methods for the first module to confirm the scope of this bid.

Budget: 1000 UAH Deadline: 1 day

Hello! NestJS with TypeScript and PostgreSQL is my main backend, so I can easily build a REST API with a clean scalable architecture and an up-to-date Swagger specification for client generation via Orval. I also handle Stripe integration and authorization through Supabase, focusing on API validation and security. GitHub — github.com/NovaCore-Organization, I would be happy to discuss details and rates in private.

Budget: 16500 UAH Deadline: 8 days

Good day, Dmitry.

I can take on the first stage of backend development based on the attached screens.

Here, I would immediately establish a proper contract between the backend and frontend: so that Swagger is not just formal documentation, but truly allows generating an up-to-date client through Orval without manual corrections after each API change.

I will separate authorization through Supabase from the business logic of the application, so that access rights and roles are not scattered across controllers. I will also separate the payment part and ensure proper handling of repeated Stripe events — this will help avoid double operations and difficult-to-find errors.

First, I will define the entities and API based on the screens, then I will assemble the main functionality and provide the frontend developer with a ready specification for integration.

The preliminary cost for the first stage is 16,500 UAH.
The timeline is up to 8 calendar days, including testing the main scenarios and adjusting the API after the first frontend integration.

If the list of screens is already final, I can confirm the fixed cost after review without switching to hourly payment. Expand

Budget: 1000 UAH Deadline: 20 days

Hello!

The project is very interesting. Excellent stack and, most importantly, a very competent approach to integration: the combination of Swagger (OpenAPI) + Orval is the best solution for synchronizing the backend and frontend. As a developer with deep knowledge of TypeScript, I understand perfectly how to design an API so that client autogeneration goes smoothly and the frontend developer receives clean, strictly typed methods.

Why I am a great fit for this task:

Deep experience with TypeScript: I write clean, modular, and easily extensible code while adhering to SOLID principles and clean architecture.

API design and documentation: I will configure Swagger so that each endpoint, request body, parameters, and response schemas are detailed. The frontend developer will be able to deploy the client in a couple of minutes.

Integration with Supabase & PostgreSQL: I have experience working with PostgreSQL and the capabilities of Supabase (including authentication, sessions, database operations, and setting up RLS security policies).

Stripe integration: I will implement payment processing, subscriptions, and webhooks through the capabilities of Supabase/NestJS.

Security and validation: Mandatory use of validation pipes (class-validator/class-transformer), route protection (Guards), and secure data handling.

Cost and timeline assessment:
I completely agree that hourly payment is inconvenient for such a project. I am ready to estimate the work in stages (screen by screen). Please provide the mockups/screens mentioned in the description — I will study them in detail and provide an exact fixed cost and timeline for implementation. Expand

Budget: 20000 UAH Deadline: 7 days

Good day!

I will do everything without any problems in the best way.
I work with Node.js/NestJS and PostgreSQL, DDD and Clean Architecture with GoF patterns for better architecture, scalability, and security.
You can see my experience with the same stack at https://web.rstays.com
I wrote the entire backend and architecture from scratch. Payment system, documentation, deployment, and more included.

Here are some examples from GitHub:
https://github.com/MoMicro-core/MoAssist-server
https://github.com/axbuglak/chat-analyze

More examples where I implemented architecture and backend from scratch: https://ai-desk.ai / https://momicro.com
Other projects are simply on GitHub: https://github.com/axbuglak

Regarding the screen, it seems to be an admin panel. So the question will be whether there will be only one admin role in the application, or also a role for viewers, for example, who will have different access?
It also shows a calendar (planner) and a couple of managers.
In general, I will do everything for up to 500 euros, most likely for 300-400, but we need to clarify a couple of questions. In terms of time - up to a week.

Sincerely, Buglak Alexey Expand

Budget: 27000 UAH Deadline: 21 days

Hello, I need a backend developer, but the references you sent are from the design. Could you send a clearer technical specification in private messages about what needs to be done: backend, frontend, deployment, DNS, email, etc.? The rate starts from $25/h.

Budget: 18000 UAH Deadline: 4 days

Hello, I have extensive experience working with nest.js, my GitHub is https://github.com/onyx144. Regarding the screenshots, there is not enough information in the specifications, but based on the functionality I see in the screenshots, it is around 18000.

Budget: 27000 UAH Deadline: 15 days

Hello!

I have analyzed the designs of the Synpria system. The task is completely clear: you need a scalable and cleanly written REST API on NestJS with integration of Supabase and Stripe.

Brief overview of the technical implementation:

1. Authorization and security (Supabase Auth + RLS):
I will set up secure login and a role-based access model (Super Admin, Dispatcher, Driver) using Row Level Security (RLS) policies in PostgreSQL.

2. Logistics and planner (Trip Planner + Load Management):
I will design a database for the relationships between Trucks/Trailers/Drivers. I will implement the logic for creating orders (Create Load) with support for multi-stop routes. Document uploads (BOL, POD) will be configured through Supabase Storage with the generation of temporary links (signed URLs).

3. Billing and Stripe:
I will integrate Stripe for processing transactions and subscriptions via Webhooks.

Professional coding standards:
• Swagger and Orval: Each endpoint will be thoroughly documented via @nestjs/swagger. Your frontend developer will be able to automatically generate an up-to-date TypeScript client through Orval.
• Clean Architecture: The code will be structured according to the modular principle of NestJS with careful validation through DTO (class-validator).

I suggest dividing the development into logical stages with payment through Safe for each completed module. I will send a link to my GitHub and code examples in personal messages. I am ready to start the discussion! Expand

Budget: 11997 UAH Deadline: 10 days

Hello Dmytro 👋.
I am interested in your project. I have 3.5 years of experience in commercial website development in this field. I have the necessary qualifications to complete the assigned task. I am ready to discuss the project and collaboration.

Projects -
https://github.com/IShowStyles/test-task-nodejs, https://github.com/IShowStyles/nest-auth-test-task, https://github.com/IShowStyles/Ticker-API, https://github.com/IShowStyles/test-task-nest

Budget: 20000 UAH Deadline: 21 days

Hello! Thank you for the screenshots. I looked closely — this is an excellent, comprehensive SaaS platform for Fleet Management. I am very familiar with the niche of transport logistics and fleet management. I clearly understand the business logic of such products: how to properly design the database so that the connections between drivers, trucks, loads, and route points work quickly and without scheduling conflicts.

Here’s how I see the architecture (NestJS + Supabase) based on your screenshots:
1. Complex transactions: The Create Load screen requires saving an array of route points, linking the driver/truck, calculating rates, and updating statuses — I will wrap all this in reliable transactions.
2. Working with files: Document uploads (Rate Confirmation, Medical certificates) can be elegantly implemented through Supabase Storage linked to specific entities.
3. Data isolation: I will set up strict RLS (Row Level Security) policies in Supabase so that each logistics company (Tenant) has access strictly to its own fleet.

Cost estimation (fixed per logical API block):
Considering the high data density and number of connections on the screens:
Basic modules (Authorization, tables Drivers / Trucks / Trailers with pagination and filters): $50–$60 per block.
Complex modules (Creating a load Create Load with all nested tables, Dispatcher calendar, Dashboards with summary statistics): $90–$120 per block.

This cost includes: designing the optimal database structure, writing clean code in NestJS, strict validation (class-validator), and detailed Swagger documentation. Your frontend developer will be able to generate all hooks and types for the tables with one click through Orval.

I am ready to call, discuss the database structure, and immediately take the project into work. Message me! Expand

Budget: 5000 UAH Deadline: 1 day

Hello! I am interested in collaboration. I will complete your task quickly and efficiently.

My recent works
https://indexfast.pro - fast website indexing
https://mono-bank.pp.ua - everything about Monobank
https://mamamia.pp.ua - online store
https://programist.pp.ua/ua/portfolio/ - portfolio of works
https://monitortest.pp.ua - monitor testing
https://keytest.pp.ua - keyboard testing
https://pctest.pp.ua - computer testing
https://devroman.dev/portfolio/ - portfolio
https://vseetut.matviy.pp.ua - layout
https://indexfast.pp.ua - fast website indexing

My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio
Write to me, I will start working today. I will be glad to collaborate with you! Expand

Budget: 24000 UAH Deadline: 14 days

Hello! I am ready to join the backend development using NestJS and TypeScript. I confidently work with REST API, PostgreSQL, Swagger/OpenAPI, authorization, validation, and integrations with Supabase, including Auth and the database; I can also work with Stripe through Supabase. I am ready to work in stages based on the provided screens/features and assess the cost of specific modules to ensure the scope of work is transparent. I would be happy to discuss the project architecture and provide relevant examples of my work.

Budget: 27000 UAH Deadline: 45 days

Good day, Dmytro!
I looked at the layouts. This is TMS for American transportation: CDL and medical with terms, ELD statuses, HOS, POD/BOL/RC, brokers, RPM, and empty mileage.
The domain is clear; the only question is where the boundary of the first stage lies.
The price for the screens you showed. REST API on Nest, Swagger under Orval:
Input, roles, and access — 9,000
Drivers, list — 2,500
Driver Profile (CDL, medical, assignment, activity feed, metrics) — 6,000
Fleet Management (tracks, trailers, counters) — 5,000
Load Management, table with KPI on top — 7,000
Create Load (multi-stop, upload RC, assignments) — 8,500
Trip Planner (calendar, reassignment, notes) — 7,000
Total 45,000 UAH, approximately 45 days.
I will explain the first line because in the layout it is just a form with two fields.
You don’t have registration; entry is only through Request a demo, which means admin creation of the company and invites are needed. In Create Load, there is a mention of the Driver App, and the driver has a different set of rights: sees only their trips, uploads only their documents. Plus roles for each endpoint, sessions under remember me, password recovery via email. Supabase Auth itself is inexpensive; what surrounds it is costly.
Separately, there are things that are not in the layouts but without which it won't work.
Data isolation between carriers (at the bottom of the sidebar, the company and Super admin, meaning the system is designed not for one firm) — 5,500. Document storage — 3,000. Background checks for terms under the Docs Expired badge — 2,500. If this is already ready on your side, these lines will not be needed.
I will calculate integrations accurately when there is specificity. Guideline: ELD (Samsara or Motive) about 9,000, mileage calculation through PC*Miler or Google Routes 3,500, Stripe 4,500.
Questions:
1. What stage is the backend at now? If auth, tenants, or the DB schema are already in place, the estimate will drop significantly.
2. Does the Driver App also run on this backend or does it have its own?
3. Invoices & Billing and Payroll are in the sidebar, but there are no layouts. Are they at this stage or later?
4. The driver has two statuses: On Duty comes from ELD, while Dispatched/Home is set by the dispatcher in the planner. Which is more important when they diverge? Expand

Budget: 27000 UAH Deadline: 30 days

Ready for new challenges and collaboration! My years of experience in software development began in 2015, and since then I have gained deep knowledge by working on various projects for international companies and local businesses.
Technologies:
PHP (Laravel, Yii1/2, Symfony, CodeIgniter), JavaScript (ReactJs, Angular, VueJs/Nuxt, NodeJS), MySQL, Postgres, AWS, Docker.

I provide continuous technical support and have experience working with global film studios and media companies such as Disney and Paramount, which confirms the high level of my expertise.

My skills allow me to create and maintain various solutions — from online stores, landing pages, and CRM/ERP systems to analytical platforms and business process automation systems. Additionally, I have been involved in implementing artificial intelligence and cutting-edge technologies to create innovative products and future business development.

My works:
https://guidetoiceland.is/ https://adsmanager.paramount.com/
https://www.disneycampaignmanager.com/
https://brillday.com/
https://nextel.cloud/ Expand

Budget: 27000 UAH Deadline: 30 days

Hello ⭐️! I am a highly qualified web developer with over ✅ 7 years of experience in development and modern web technologies.

Recent projects:
✔️https://homenly.com
✔️https://confidence-tech.com
✔️https://homexcrm.com
✔️https://omgfirms.com
✔️https://skyhigh-lviv.com/
✔️https://sweet-sdpearls.de/
✔️https://novobudova.pro
✔️https://aquahub.org.ua
✔️https://boostylabs.com
✔️https://ol.zp.ua
✔️https://emporio-sports.cz

My stack includes:
✅ Frontend: HTML, CSS, JavaScript, React.js, Vue.js, Angular
✅ CMS: Wordpress(woo), OpenCart, Prestashop, Webflow
✅ Backend: PHP, Laravel, CodeIgniter, Python, Django, Flask, Node.js, Next.js
✅ Databases: MySQL, PostgreSQL
✅ Other skills: Git, API integration

Why choose me?
✔️ Fast and quality execution: Your tasks will be completed on time and with impeccable quality.
✔️ API integration: Need seamless integration of third-party APIs? I will take care of that.
✔️ Custom solutions: I take your ideas and turn them into successful web solutions tailored to your business needs.

Let's collaborate and create something amazing together! Expand

Budget: 27000 UAH Deadline: 14 days

Hello! I looked at the screens, and there are two key points regarding the backend.

First, since the frontend generates the client through Orval: I keep the OpenAPI specification as the single source of truth. DTO and validation automatically generate Swagger, so the frontend developer always has an up-to-date client, and any incompatible API changes surface immediately during generation, not in production. Contract-first from the very beginning.

Second, regarding Supabase, it's important to know where the authorization boundary lies. If Nest uses the service_role key, RLS is quietly disabled, and all protection relies on guards in the code. Therefore, I build authorization consciously: checking permissions at each endpoint, validating input, and using Stripe through Supabase capabilities carefully, without gaps. The architecture is modular, with clean layers and tests on critical paths.

Regarding the rate, as you requested, I calculate based on the screens: ~5500 UAH per screen (the backend for a screen includes endpoints, validation, authorization, and up-to-date Swagger). Based on the screens provided, it comes to approximately 38,000-46,000 UAH in total, more accurately after clarifying the relationships between entities.

I am ready to show relevant code and discuss the architecture when it's convenient. I would be happy to work together.

Budget: 27000 UAH Deadline: 10 days

Good day. I am ready to implement. I can start immediately after clarifying the details. 📞 Always available and open to communication.

Budget: 27000 UAH Deadline: 5 days

Hello.

Middle+ nodejs developer with 6+ years of commercial experience.
Stack: Nodejs, TS, NestJS, Express, GraphQL, PostgreSQL.
I reviewed the photo, I think it will take about 40-50 hours.
$20/h.

Budget: 27000 UAH Deadline: 25 days

Good day.
I have reviewed the provided screens.
I will implement a modular REST API on NestJS + TypeScript with PostgreSQL/Supabase, using Swagger as the single contract for generating the Orval client, DTO validation, role-based access, and documentation for each endpoint.
For Supabase, I will provide Auth/JWT and proper data isolation between companies. Stripe will be implemented through verified webhook events with signature verification and protection against duplicate payment processing.

Before starting, I need to clarify whether there is already an ERD, a list of roles, status transitions, and rules for calculating RPM, empty miles, and payroll. After that, we will finalize the stages and acceptance criteria.

Budget: 22400 UAH Deadline: 12 days

Hello!

I have reviewed the requirements and layouts of the project.

I have experience in backend development using NestJS + TypeScript, working with PostgreSQL, creating REST APIs, documenting through Swagger/OpenAPI, as well as integrating authorization and payment services. I write clean, scalable code with a well-thought-out architecture that will be easy to maintain and extend.

Budget: 6000 UAH Deadline: 14 days

Hello, Dmytro!
I have analyzed all screens - fleet management/TMS for the US market (ELD, HOS limits, CDL, RPM per mile, W2 payroll) - the stack and logic are fine, I am currently leading a similar project: NestJS + PostgreSQL + Supabase (auth/DB) + Stripe + Swagger→Orval.

In terms of volume, Load Management and Create Load are the most extensive screens for multi-assignment driver/truck/trailer through join tables, aggregating RPM/Total Pay/Empty Miles, document uploads via Supabase Storage - this is about 30-40% of the total backend volume, the other 5 screens are conditionally standard CRUD.

Regarding billing security - I have already implemented it - verification of Stripe webhook signatures, idempotency by event_id (protection against reprocessing), async-retry on failed webhooks (backoff 1→6→24→48→72 hours), RAW log for auditing. Supabase serves as the auth layer (JWT/GoTrue + RLS), Stripe keys are strictly on the backend, not through the Supabase client. The grace period on payment_failed - access is not cut off instantly, which is critical for active trips.

I will provide an estimate for each screen with a range for quick checks/full testing, but for an accurate figure, I need to clarify:
Do you already have an ERD/database schema, or are we designing the architecture from scratch based on the layouts?

Invoices & Billing and Payroll in the sidebar - are there layouts, or is this the next stage after MVP? This directly affects the volume of Stripe integration, whether Connect for payouts to drivers or regular Checkout.
The roles Super Admin/Driver Admin, which are visible in the footer of the screens - do you confirm that RLS policies in Supabase need to be made for at least 2 roles?

The approximate range for the entire project is 4000-9000 UAH, the final figure depends on the depth of test coverage and the answers above, screen-UAH:
Sign In 2500
Drivers List 3500
Driver Profile 5500
Fleet Management 6500
Load Management 9000
Create Load 7500
Trip Planner 6500
total 41000

I will send the GitHub with the relevant case in private messages. Expand

Budget: 27000 UAH Deadline: 87 days

According to the screenshots, this is a TMS for American cargo: CDL/medical expiry, ELD, HOS, POD/BOL/RC, RPM, and empty miles, brokers like TQL.

Four areas in the layouts define the architecture, and they need to be finalized before the first line of code:

1. Multi-tenancy. Company switch and Super admin in the sidebar. If Nest accesses Supabase under service_role, RLS is not applied — tenant isolation relies solely on code discipline. The decision is made once, redoing it is costly.

2. Load — not origin/destination. In Create Load, stops are added as a list and can be dragged: model load -> stops[]. From here, empty miles are the distance from the previous drop to the next pickup, which involves external routing. Otherwise, the number is fake.

3. “and 3 others” on LD-00004 — the load has multiple drivers and trucks, meaning many-to-many and team drivers. The Trip Planner is an occupancy calendar: double booking is reliably closed with a constraint in the database, not a check in the service.

4. Docs Expired — not a flag in the table, but derived from CDL and medical dates. Boolean here guarantees desynchronization.

Estimation for six screens: 240-295 hours, 7,500 - 9,500 USD, 8-10 weeks, payment in stages. The exact figure within the range will be determined after answers to five questions about the scope (ELD in MVP? Is Stripe a subscription or invoices to brokers? Is there a Driver App?). A detailed breakdown by modules and what is not included in the estimate will be sent privately.

Instead of a portfolio, I offer specifics: within 1-2 days, I will send the OpenAPI schema of the Loads module based on your Create Load layout and the generated Orval client from it for free. Review the contract before hiring — this is exactly what your frontend developer will work with.

Stack: NestJS/TypeScript, PostgreSQL, React/Next.js. GitHub — in private. Expand

Budget: 15000 UAH Deadline: 5 days

Hello! I have solid experience working with NestJS and TypeScript, designing clean architecture using Swagger for convenient integration with the frontend. I have worked with Supabase (Auth, DB, Edge Functions) and payment system integration, including Stripe. My approach is to write maintainable code with data validation and strict adherence to security principles. I am ready to implement the API according to your requirements. I can provide code examples and architectural solutions in private messages. Let's discuss the project details and the scope of work based on the provided screens so I can guide you on the exact cost.

Budget: 27000 UAH Deadline: 30 days

Hello! I propose to build the backend modularly: NestJS + TypeScript, PostgreSQL/Supabase, Swagger as a single contract for generating the Orval client, DTO validation, roles and access policies, migrations, logging, and testing critical scenarios. Based on the attached screens, I will first break down the domain into drivers, fleet, loads, trips, profile/auth, and the Stripe payment module. There is a practical case from Shatalov with Supabase/PostgreSQL that we can discuss in detail in correspondence. Please clarify: are the user roles, entity statuses, and access rules already defined, or do they need to be designed based on the screens? The first step is a map of entities, endpoints, and a database schema with an OpenAPI contract. The preliminary fixed estimate for the shown volume is 55,000 UAH, 30 days; after clarifying the business rules, I will finalize the stages and acceptance criteria.

Budget: 10000 UAH Deadline: 14 days

I have worked with NestJS and TypeScript in commercial projects for about 3.5 years, using PostgreSQL as the main database. I have experience with Supabase: authentication via Auth, working with the database through the client, webhooks. I integrated Stripe through Supabase Edge Functions.

Regarding the task: I will create a clean REST API with proper layer separation, DI through NestJS modules, and validation using class-validator. I will configure Swagger documentation so that Orval generates a typed client without manual adjustments. If needed, I can show an example of a schema with tags and correct response types so that the frontend immediately receives a working client.

In terms of architecture, I adhere to the principle that each module is independent, logic does not flow into controllers, and authorization is done through guards, not through if-checks within services. This simplifies maintenance as the project grows.

I am ready to discuss the details and structure of the API.

Budget: 20000 UAH Deadline: 2 days

Good day, I have not only examples on GitHub but also an understanding of the principles of REST such as HATEOAS. I have also created MCP servers for AI agents. I will show and explain how everything works and what bodies to use. I have a harness set up for maximum speed.
Sincerely,
Oleg Zhylin

Budget: 9000 UAH Deadline: 5 days

Dmitry, good afternoon.
Regarding the screens, this is TMS: drivers with CDL and medical cards, loads, fleet, trip planner. Currently, I am leading a multi-tenant TMS on NestJS/TypeScript/PostgreSQL. The domain of freight transportation is not new to me: load statuses, driver-truck-trip binding, document deadlines, data separation between companies.
About the stack. NestJS, TypeScript, PostgreSQL - the main ones. Modular architecture by domains, contract-first Swagger, so Orval generates the client without manual synchronization. I haven't worked with Stripe and Supabase in production, to be honest; but essentially, this is an integration layer over familiar things - JWT validation from GoTrue guard and regular Postgres from Supabase, webhooks with signature verification and idempotency from Stripe. I include this in the estimate and do not charge for it.
Regarding the price. It is not fair to give a fixed price based on the screens: they show the UI but do not show the role model, status transitions, and calculation rules, which is the main volume. Therefore, I propose the following:
Stage 1, design (fixed, 5 days): ER model with state machines, a list of endpoints with roles, OpenAPI skeleton. Your frontend developer can immediately take it in Orval and start in parallel. The artifacts will remain with you in any case.
Stage 2, implementation: fixed, calculated based on the laid-out volume, divided into stages with payment upon demonstration.
The budget and timeline in the bid are indicated for Stage 1, not for the entire project.
Questions that affect the architecture:

Does the frontend access Supabase directly, or does all access go through my API? This affects whether authorization lives in RLS policies or in the application.
Stripe - what exactly is being paid: subscription of the carrier company or calculations per trips? And why through Edge Functions if the backend is on NestJS?
Is there multi-tenancy? One company per instance or many companies in one database?
Is there already a database schema or is it from scratch?

Client code is under NDA. If necessary, I can send links to GitHub with examples of my code in private. I am ready to discuss the details. Expand

Budget: 1000 UAH Deadline: 3 days

Hello!
Your approach to architecture and automation (especially the combination of Swagger + Orval for the frontend) is very appealing — it significantly speeds up development and minimizes integration errors. I have relevant experience with NestJS and the Supabase ecosystem, so I would be happy to implement the backend for your project.
Why my experience fits your tasks:
NestJS + TypeScript: I design clean and scalable architecture (modular structure, clear separation of services and controllers, strict typing). The code is easy to maintain and extend.
Supabase & PostgreSQL: I am well acquainted with Supabase tools. I will set up reliable authentication/authorization (Auth) and database operations through Prisma or TypeORM (depending on your preferences) considering the specifics of PostgreSQL.
Stripe Integration: I have experience working with Stripe (including through Supabase Edge Functions webhooks or directly in NestJS for synchronizing subscription/payment statuses).
Ideal Swagger: I write detailed documentation with all DTOs, schemas, and response types so that your frontend developer can easily generate clean client requests through Orval. I would be happy to discuss the details, look at screen layouts, and design a reliable architecture for your product.
Best regards,
Victoria

Budget: 2000 UAH Deadline: 1 day

I am a NestJs developer. I am ready to take on this task.

Budget: 20000 UAH Deadline: 20 days

Hello. I am ready to develop a REST API on NestJS for your project. I have practical experience working with TypeScript, PostgreSQL, and integrating Supabase for authentication, data management, and setting up payments through Stripe. I will design a clean, secure, and scalable architecture, and also provide documentation support through Swagger so that your frontend developer can automatically generate a client through Orval. I will send examples of projects and links to my GitHub in private messages. Since the screens for the task are not attached, I will be able to provide an exact fixed cost for development immediately after reviewing them in detail. I would be happy to discuss technical details and start collaboration.

Budget: 27000 UAH Deadline: 30 days

Hello! I have studied your technical specifications and the provided screens of the logistics CRM (driver management, CDL, medical records, and cargo distribution).

I see that you are looking for a NestJS stack. As a Senior Fullstack/Backend developer, I would like to suggest you consider an alternative that will significantly benefit in terms of speed of launch and cost — backend development in Python (FastAPI).

Why FastAPI will be more effective for your task than NestJS:

(you can also use Nest.js, I work with both technologies)

1. API response speed (MVP for a lower budget): FastAPI does not require writing hundreds of lines of boilerplate code (modules and providers) like NestJS. The logic for working with driver cards, statuses (On Duty/Off Duty), and mileage calculation can be implemented 1.5–2 times faster.

2. Perfect Swagger out of the box: You are asking for OpenAPI generation via Orval. In FastAPI, Swagger is generated completely automatically based on Pydantic models. Your frontend developer will receive perfect interactive documentation without the risk of discrepancies with the backend.

3. Native integration with Supabase and Stripe: Python has a powerful ecosystem for working with Supabase (PostgreSQL) and Stripe. Authorization, sessions, and financial logs will work like clockwork.

My fixed estimate for the entire scope of work (all screens turnkey):

Cost: $1,800 – $2,300 (depending on hidden logic that we will discuss).

Timeline: 25–35 days (with complete architecture, database, and auto-testing of endpoints).

Hourly payment is indeed inconvenient, so I suggest breaking the project into 3 clear fixed milestones with payment upon demonstration of work.

I cannot provide Git as an example, as I do not engage in development for show. Moreover, the platform does not allow sharing such links with contacts, and I value my reputation.

In my portfolio, I have several examples of CRMs, for a farm, for mini-games in a Telegram app, for a medical clinic.

If you are open to optimizing the budget and timeline without compromising quality — let’s chat and discuss the details! Expand

Budget: 2000 UAH Deadline: 3 days

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Працюю з:
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🔹 OpenCart
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Budget: 700 UAH Deadline: 1 day

Good evening, I developed a SaaS on Nest. It was a small startup. We went from idea to full implementation. The stack was almost identical, I don't think I will have difficulties with your stack. Take a look at my resume. I would be happy to work with you!

Budget: 1000 UAH Deadline: 1 day

Good day, I am ready to complete your task quickly and efficiently. I have extensive experience in creating various bots. Please write to me in private messages to discuss the details. I would be happy to help :)

Budget: 5000 UAH Deadline: 14 days

Need a NestJS backend with clean architecture, Supabase integration, and Swagger specification, so that the frontend generates the client through Orval without manual synchronization.

I will do the following: modular NestJS structure with domain separation, Supabase Auth via JWT guard with role-based access, TypeORM on top of Supabase PostgreSQL. Swagger decorators on each endpoint with precise types — Orval will generate the client without modifications. I will connect Stripe via Supabase Edge Functions or directly through a webhook with an idempotency key to ensure that repeated requests do not duplicate payments.

Please send the screens — I will assess the volume and provide a fixed rate for the entire scope. How many entities are approximately in the database, and is there already a data schema, or are we starting from scratch?