Backend MVP for EORI registration service

Good day.
20 years of development experience, including turnkey CRM/ERP system development.
And of course, there is experience in integrating various services, APIs, etc.

Here are examples on Laravel.
https://freelancehunt.com/showcase/work/razrabotka-erp-dlya-proizvodstva-sklad/2026079.html

https://freelancehunt.com/showcase/work/arhitektura-proektuvannya-ta-rozrobka-crm-erp-sistemi/2030161.html

… I have experience and developments in all points.
1) Step by step
2) Laravel stack
3) Yes, many different integrations
4) About 1 month
I will make a basic frontend as a gift to save you a lot of time on testing.

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Hello!
I have extensive experience with Laravel, RESTful API, payment system integrations, and working with various libraries, particularly for generating PDFs. I also have extensive experience integrating third-party API services.
I will also be able to implement Diya.Signature.
The estimate I am providing now takes into account a mock implementation of the signature with the correct architecture preparation for full integration.
I usually use DDD and tests in projects — this makes the system extensible, stable, and predictably functional.

I am ready to discuss the details in private messages and start immediately.

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Good day!
I can implement it on Laravel.
I have experience working with the Diya API, payment systems, and third-party services via API.
I will develop a documented API.
Contact me, and we will discuss all the details.

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I can do it on laravel + vue + filament. I have a lot of experience with this stack.

I do not have experience with the action API, but I have experience with PDF generation.

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Hello!
I have extensive experience (10+ years) in automating large commercial projects using BPM platforms.

I can offer development on the low-code platform archITekt as a turnkey solution. The platform is flexible and has numerous modules:

User Interface (Designing the appearance of the created application includes configuring elements of the graphical interface, such as forms, lists, application menus, and related data structures and dictionaries.)

Algorithms (Building business rules is done using a convenient graphical designer. Algorithms modeled in this way are a separate part of the system, allowing for easy modifications.)

… Processes (Defining and managing processes involves linking the following operations in the form of a diagram. The module includes a wide range of universal processes and allows for its expansion.)

Data Processing (Integration with other systems is possible through data exchange via REST/SOAP API.)

Document Generation (Developed processes are complemented by document templates prepared in the MS Word environment. The generation of files ready for printing or sending occurs automatically.)

I can develop the entire module as a turnkey solution.

Price from $2000+.

If interested, I can send a link to the platform for review.

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I represent Charged Development — an international team specializing in the development and automation of IT solutions. We have been operating since 2019, based in Sweden, and we engage in the full cycle of development: backend, analytics, integrations, automation, AI/ML, and consulting. Our team has experience working with custom backend services, external APIs, document generation, and business logic for services and internal platforms.

For your MVP, I propose implementation on Laravel as a REST API without a frontend, with testing through Postman and code delivery via GitHub or GitLab. Architecturally, this will be a separate backend service with modules for obtaining company data through an external registry, a transliteration service according to CMU Resolution No. 55, PDF generation based on a template, a separate layer for document signing, and a payment module through LiqPay or WayForPay in test mode. For the MVP, I recommend making the signature with a prepared structure for integration and a mock implementation, or, if you already have access and technical requirements, to immediately lay down integration with Diia.Sign. This will allow for a quick check of the entire end-to-end process and avoid delays in starting.

For the tech stack, I propose Laravel, PostgreSQL, Swagger/OpenAPI for documentation, Laravel HTTP Client for external APIs, a library for PDF generation, a queue for asynchronous operations, and webhook logic for payments. We will separately prepare a Postman collection, describe the endpoints, provide examples of requests and responses, as well as a basic deployment guide.

We have relevant experience in backend development, API integrations, process automation, and building service logic for business tasks. We also engage in software development, analytics, data processing pipelines, and IT consulting, meaning we can cover not only the MVP but also the further development of the product.

Approximately, the MVP of such a backend solution can be implemented in 2–3 weeks if the signature is done through a mock or a prepared integration layer. If we immediately connect a full electronic signature and go through all the nuances of external integration, it is more realistic to plan for 3–4 weeks. Regarding the budget, the guideline for the MVP is 20,000–35,000 UAH depending on the depth of integration with the signature, payment system, and requirements for PDF templates. If starting with a basic technical MVP to check the process, we can begin at the lower end and then develop the project step by step.
…
We are interested in long-term cooperation, so we can design the backend in such a way that it can easily connect to the frontend and expand the service in subsequent stages.

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Hello! I am an individual developer with 4 years of experience in PHP (Laravel) and automation of complex business processes, so I will professionally implement the backend for your EORI acquisition service, focusing on the cleanliness of architecture and reliability of integrations; I offer a stack of Laravel 11 + PostgreSQL + Redis for queues (PDF generation/transliteration), I will integrate Opendatabot through a separate Service Provider, implement transliteration according to CMU No. 55 as a helper, and for signing in ASiC-E format, I will prepare a structure for integration with Diia.Signature (by creating a document hash and subsequently collecting the package) or the Endroid/QrCode library for session initialization. I have experience with WayForPay (including recurring payments and Apple/Google Pay), PDF generation through Snappy/Dompdf, and automation of data parsing, so I will implement the MVP for 10,000 UAH within 5-6 days with complete documentation in Swagger and a ready Postman collection for tests. I work through FOP, focused on long-term cooperation and further development of the project to a full version. My works: https://3magency.co/, https://jk-solution.com.ua/, https://farfieworldwide.com/, Behance.

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Good day

I have experience in backend development on Laravel, with API integrations, payment systems, and PDF generation. I am ready to implement the MVP: data retrieval (Opendatabot), transliteration, PDF generation based on a template, signing (via Diia or mock under asic-e), integration with LiqPay/WayForPay.

Architecture: Fastapi or Django Python + REST API + Swagger, modular structure (separate services: data, pdf, sign, payments). Code on GitHub, testing through Postman.

Questions:
— which signing option is a priority (Diia or asic-e)?
— is there a ready PDF template?
… — what volume of load is expected?

I am happy to discuss the project details.

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Hello!

We specialize in backend development on Laravel for over 7 years and are ready to implement an MVP backend for your service with a clear structure and scalability.

1. How I will implement
I will develop a REST API on Laravel with separation into individual services: obtaining company data, transliteration, PDF generation, signing, and payment.
Main flow: obtaining data → transliteration → PDF generation → signing → creating payment → updating application status.
I will add logging, error handling, and Swagger documentation.
Separately, I consider the integration of electronic signatures (Diia.Signature / ASIC-E) — for the MVP, I can implement a mock or basic integration with further expansion.
…
2. Stack
Laravel, PostgreSQL, REST API, PDF (DOMPDF / wkhtmltopdf), Swagger, API integrations

3. Experience
I have experience integrating third-party APIs, connecting payment systems (LiqPay, Platon, Stripe), generating PDFs, and building backend services with business logic.
I have also worked with the Diia API.
I have experience building similar backend solutions with a full cycle: from integrations to payment flow and working with documents.

4. Terms and cost
2–3 weeks
$1500 – $2500 (depends on the implementation of electronic signatures)

We are ready to discuss the details and start working.
If necessary, we are also ready to work on the frontend part.

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Hello!

The ViACore team can implement a backend MVP for you for the service of creating and signing an application for obtaining EORI without a frontend, focusing specifically on verifying key integrations and business logic.

We offer the stack:
Laravel / PHP, REST API, Swagger/OpenAPI, Postman collection, PDF generation, integrations with external APIs, payment systems, and preparation of a block for electronic signatures / Diia.Sign.

How we will implement it:

… - obtaining company data through integration with Opendatabot or an equivalent based on EDRPOU / TIN;
- transliteration service according to the Cabinet of Ministers Resolution No. 55;
- PDF application generation based on a template with automatic data substitution;
- signature module: either a mock implementation with the correct architecture for further integration, or we will separately work on the option with Diia.Sign / ASiC-E;
- payment through LiqPay or WayForPay in test mode: card, Apple Pay / Google Pay (if supported by the payment provider's scenario), as well as the logic for generating an invoice for cashless payment;
- REST API endpoints for all stages: company data, document generation, signature, payment;
- Swagger documentation + examples of requests/responses for testing via Postman.

We have experience with:

- Laravel backend development;
- API integrations;
- payment systems;
- PDF generation;
- building architecture for scaling the next stages of the product.

Regarding electronic signatures / Diia.Sign: if a full-fledged operational integration is required, it is better to allocate it as a separate stage after clarifying technical and legal details. For the MVP, it is optimal to immediately lay down the correct structure to transition smoothly to the production version.

MVP assessment:

- timeline: approximately 7–10 working days
- cost: 800 USD

We can also immediately lay the foundation for the next stage: frontend + full version of the service.

We are ready to take the project into work and offer a neat backend architecture without unnecessary complications, but with room for development.

https://viacore.group/en

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Good day. I am ready to complete this project as I have extensive experience in application development.

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Good evening.

I can implement the backend MVP on your Laravel 12 without frontend, with a REST API for testing via Postman.

What is included:
— obtaining company data by EDRPOU / TIN through an external API
— transliteration according to CMU No. 55
— generating a PDF application based on a template
— preparing logic for document signing
… — payment integration (LiqPay / WayForPay, test mode)
— Swagger / description of endpoint + examples of requests

For implementation, I would break everything down into separate services so that the project can be easily expanded later.

In terms of timelines: approximately up to 20 working days for the MVP, to allow time for integrations, testing, and possible nuances regarding signing and payment systems.

I have been working with Laravel, REST API, third-party integrations, payments, and document generation for over 10 years.

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To implement the backend MVP, I propose Laravel as the main framework — it is ideal for rapid development of reliable REST APIs with support for easy integration of third-party services. My experience of over 12 years includes PHP, Laravel, working with various APIs, payment systems (LiqPay, WayForPay), as well as PDF generation (via mPDF or TCPDF) and document signing. In particular, I have implemented systems with the application of electronic signatures, including the asic-e format, and I am familiar with the principles of integration with government APIs, including Diia.

Action plan:

1. Development of a REST API to obtain company data through integration with Opendatabot (or similar), with caching in Redis for optimization.
2. A separate transliteration service according to the CMU Resolution No. 55 — a compact, easily maintainable function.
3. PDF generation based on a template with the substitution of obtained data.
4. Implementation of signing: a mock version for MVP with further expansion of integration with Diia.Signature.
5. Integration of payment through LiqPay or WayForPay in test mode, with an endpoint for creating payments and processing results.
… 6. Documentation of the API via Swagger — will ensure clear structure and ease of testing.
7. Organization of code in GitLab/GitHub with CI/CD, testing via Postman.

I propose to use the stack Laravel + PHP 8+, MySQL/PostgreSQL, Redis, Docker for local and production environments.

Estimated timeline: MVP approximately 3-4 weeks considering testing and documentation. The cost depends on the detail of requirements, approximately 2500-3000 EUR.

I have experience in projects with similar integrations: working with third-party APIs, document generation, payment gateways, electronic signatures.

I am ready for long-term cooperation with further development of the project, including the frontend.

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Hello, I am interested in your project, we can talk in more detail. I am engaged in website development and Rest API for various services. I have experience in generating PDFs for printing - there will be no problems here. Write to me, we will discuss the details and the price.

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Good day
I specialize in developing REST APIs in Laravel, ready to complete this project
Experience of more than 4 years
Write to me, we will discuss, I will be happy to collaborate!

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Write in private messages, I will write the backend for your task and will immediately package it so that it can be easily deployed on hosting, or I will set it up on hosting right away.

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Hello! 👋

I work with Laravel and RestApi

✅ I am ready to complete your task professionally and on time.
📋 My resume and portfolio are available for review https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio

📌 My experience:

… Over 7 years of working with similar tasks.
Quality implementation of any tasks in the field of web development.

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Hello!
I have 5+ years of experience with Laravel and have worked on backend services with API integrations, payments, and document generation.

I envision the implementation as follows:
- Laravel as the foundation (REST API + clear service structure)
- separate services for integrations (company data, transliteration, PDF, signature, payment)
- PDF generation through a template (for example, DOMPDF / Snappy)
- signature: either integration with Diya.Signature or preparation of the structure for asic-e (I can create a mock for MVP)
- payment through LiqPay / WayForPay (test mode + webhook processing)
… - documentation through Swagger

The code is structured, with the possibility of scaling for the full version.
I can connect and discuss the details.

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Hello!

I am a Full-Stack Software Engineer with over 7 years of experience in developing websites, SaaS solutions, complex web platforms, and MVPs for startups - from idea and architecture to production and support.

I work not only as a developer but also with a focus on business logic, scalability, and long-term support of solutions. My portfolio includes examples of implemented projects of varying complexity.

Technology stack:
PHP (Laravel, Symfony, Yii2),
Frontend: JavaScript (Vue.js, React.js), HTML5, CSS3,
… Databases: MySQL, PostgreSQL.

Regarding timelines and costs - at this stage, it is difficult to accurately assess them without clarifying the requirements. To form a reasoned estimate, it is usually necessary to understand:
- project goals;
- key functionality;
- expected load and integrations;
- priorities (quick launch vs scaling).

I suggest starting with a brief clarification of requirements or a call / correspondence - after that, I will be able to provide a realistic estimate regarding timelines, budget, and implementation options.

I would be happy to discuss the details.

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Hello! I have extensive experience working with Laravel, so I propose to develop using Laravel and a Postgres database.

To obtain data, I will connect Opendatabot and immediately set up caching.

I will implement transliteration in a separate service according to all the rules of the 55th resolution — this will be an independent tool that can be used anywhere. We will generate the document through blade templates.

Regarding the signature: for the MVP, I will create a proper placeholder that fully replicates the logic of the real process. In the code, I will lay out the architecture for Diia.Signature or work with containers, so that later I won't have to rewrite everything, and I will tie the payment to WayForPay.
I am ready for ongoing collaboration, completing tasks clearly and on deadline. As a result, you will receive Swagger and examples of requests/responses.
I also have experience implementing similar modules: opendatabot, payment gateways liqpay and stripe.

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Good day
I am ready to take on your task for implementation.
Feel free to reach out.

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Hello. I have extensive experience in website development. I am ready to implement the backend using Nest.js or Fast API.

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Ready to create a backend MVP for the EORI application service.

Here’s how I would assemble it:
Laravel with a neat division into services, each external integration as a separate module (Opendatabot, PDF, signature, payment), secrets in .env. For company data — Opendatabot with caching to avoid hitting limits. Transliteration according to CMU Resolution No. 55 — a separate class with tests on standard examples.

PDF application — rendering based on a template (dompdf/mpdf, depending on requirements for Cyrillic/fonts), storage in the storage.
Signature ASiC-E — at your choice: immediately through Diia.Signature if you already have access, or a mock with the same contract to later seamlessly replace it with a real provider.
Payment — LiqPay or WayForPay in test mode: creating a payment, webhook with status, idempotency; I will add a bank invoice if needed.

… API: basic endpoints (company lookup, application creation, PDF, signature + status, payment + webhook, application retrieval), unified error format, Swagger + Postman collection in the repository. Everything is deployed via Docker.

Stack: PHP 8, Laravel 10/11, MySQL/PostgreSQL, Redis, Guzzle, dompdf/mpdf, Swagger, Docker.

Experience: I have done integrations with external APIs, payment flows with webhooks and idempotency, PDF generation, and “mock providers” for future live integration — I propose to do the same with ASiC-E.

In development, I use Cursor — it speeds up the routine, but I control the architecture of integrations, key security, and API quality myself.

Timeline: MVP in 3–5 weeks.

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Hello!
I am interested in your project!
I have extensive experience with Laravel, as well as with external APIs.
1. Implementation according to your specifications.
2. Laravel stack for API + libraries for PDF and cryptography
3. Yes
4. 15-20 days, 16000 UAH

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Good day!

I am ready to implement the MVP backend on Laravel (REST API).

I will cover:
- integration with Opendatabot (retrieving company data)
- PDF generation from a template
- signature (Diia.Signature or mock under asic-e)
- payment (LiqPay / WayForPay, test mode)
…
Documentation - Swagger, testing through Postman.

I have experience in API integrations, payments, and document generation. I also have extensive experience in Front-end development, so we can work together long-term.

Let's discuss the details and I can start right away.

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Good day. I am interested in your order. I have been working in web development for over 10 years, and I have been writing in Laravel for more than 6 years. Please write in private messages to discuss the details.

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Good day.
I will execute on Laravel, I will create a collection in Postman for Rest API and describe the endpoints.
I will integrate with the payment system (I have worked with Stripe, but it is not a problem to figure out others as well).
Electronic signature - I will need to look for the best way, through Diya or some other method.
If an admin panel is needed - I can create it on AdminLTE or Filament.
The deadline is approximately one month, maybe faster.
I am interested in long-term cooperation.

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Hello! I have reviewed the project description. The task is clear, I have relevant experience working with state registers, the Diia API, and document generation, so I understand the specifics of document signing and data processing for companies.

It won't be possible to simply glue together several APIs, as the ASiC-E format and working with registers have their nuances in logic.

I develop exclusively on Laravel.

I will separately implement a transliteration service strictly according to Resolution No. 55, to avoid errors in the legal document.

Regarding the signature: I have experience integrating Diia.Signature and authorization through Diia.
…
I will handle payments through WayForPay (or LiqPay) with full Webhooks processing for automating the status of the application.

Please let me know if the technical specification is ready? And do you have a sample template of the application that needs to be generated?

Best regards, Denys

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Execution of the Backend MVP development project for the EORI registration service

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