Maksym O.
Expert in developing SaaS platforms and web applications | Next.js ReactJS Node.js
Offer Maksym work on your next project.
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Offer work 
Vinnytsia,
Ukraine
currently online
responds to 28% of messages
available for hire
5 Safes completed
8 months 2 days back
4 clients
135 proposals made
on the service 5 years
Rating
Language proficiency level
Українська: fluent
English: upper-intermediate
Skills and abilities
Programming
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AI & Machine Learning
from 14 USD for hour
- Bot Development
- Cryptocurrency & Blockchain
- Data Parsing
- Databases & SQL
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Javascript and Typescript
from 14 USD for hour
- Python
- Testing & QA
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Web Programming
from 11 USD for hour
Design & art
Services
Photo, Audio & Video
Promotion
Mobile development
Portfolio
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Screenify - streaming service with 100,000+ content
Website Development
I managed to achieve a page load time of less than 1 second, even with a database of over 100,000 content items. This allowed to reduce the bounce rate by 25% and cut customer acquisition costs by 15%, saving over $2,000/month on marketing.
The client contacted us through a freelance platform with the idea to create a streaming service for movies and TV shows, accessible on the web, mobile devices, and Smart TV. The main goal is to create a scalable product with a premium UX.
… Project tasks:
1. Scalable infrastructure — ensure stable operation under high load
2. Own analytics and CRM — tracking user behavior, views, searches, and integration with user analysis systems
3. Modern design — convenient, aesthetic, and intuitive interface
4. Mobile and TV applications — optimized for Android, iOS, and Smart TV
5. Powerful streaming system — subscriptions, resume watching from any device, recommendations, search
6. Payment integration — subscriptions, payment management, monetization
What I implemented within the project:
1. Performance optimization with Redis and Next.js — caching and SSR provided ultra-fast loading
2. Offline mode support and AirPlay — users can download videos and stream to other devices
3. Reliable database — PostgreSQL (clustering and sharding) for content + MongoDB for individual data
4. CDN and load balancer — custom DNS-based solution for efficient video delivery
5. Smart analytics — deep tracking of user sessions, habits, and engagement linked with CRM
Screenify today is a scalable, fast, and user-friendly streaming service for content viewing on any device.
Technologies:
Next.js, React.js, NestJS, PostgreSQL, MongoDB, React Native, TypeScript, AntDesign, Redis, Socket.io
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Etalon — a platform for real estate sales
Website Development
I managed to achieve a page loading time of less than 1 second thanks to SSR and frontend optimization. This improved user interaction with the site and allowed for more effective conversion of traffic into leads.
The client reached out through a freelance platform with the task of creating a modern platform for presenting a residential complex. The main goal is not just a website, but a sales tool that clearly presents information and brings in quality leads.
… Project tasks:
Modern presentation of the property — convenient structure, planning, galleries, and details
Bilingualism — Ukrainian and English for different markets
Responsiveness — stable performance on all devices
Lead collection — forms for quick contact with the sales department
High performance — fast loading for advertising traffic
What I implemented within the project:
Optimized frontend on Next.js with SSR — fast first render and SEO
Backend on NestJS + PostgreSQL — content and apartment data management
Flexible CMS logic — content editing without a developer
Multilingualism — through dynamic routing
Mobile-first UX — convenient use on smartphones
The SaaS platform, as a result, is a fast, stable, and clear tool for presenting real estate that helps generate leads and work with potential buyers.
Technologies:
Next.js, React.js, NestJS, PostgreSQL, TypeScript, Vercel, Figma
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SVOI — SaaS MVP for drop sales model
Website Development
I managed to create a platform with a loading time of 0.9–1.2 seconds even with a visually rich interface. This allowed reducing the bounce rate on mobile by approximately 30% and increasing engagement with active drops by ~35%.
The client approached with the idea of creating a platform for a brand with limited collections. The main goal is to move away from the classic catalog and build a system around drops, scarcity, and a sense of "limitedness" that stimulates purchase.
… Project tasks:
Architecture for drops — seasons and limited releases instead of a standard catalog
Real-time elements — display of activity, views, and product availability
Strong brand UI — clean, recognizable design without overload
Simple user flow — quick path from entering the site to action
Mobile-first — optimization for primary mobile traffic
Scalable MVP — potential for development into a full-fledged SaaS product
What I implemented within the project:
Optimized Next.js frontend — pre-rendering, prefetching, and image optimization for fast loading
Logic for drops and seasons — separate season pages + a unified catalog with filters
Interactive elements — live viewers, statuses, percentage of product availability
Conversion-focused UX — emphasis on active drops and clear CTAs without unnecessary distractions
Catalog filtering — by season, availability, price, and tags
Basic trust pages — delivery, returns, policies for readiness for launch
As a result, the platform is a fast, emotional, and well-thought-out MVP that creates a sense of scarcity, enhances engagement, and prepares the product for scaling as SaaS.
Technologies:
Next.js, React.js, Node.js, TypeScript, Modular UI, Image Optimization, Pre-rendering / caching
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Tasty Corpus — SaaS MVP platform for online food ordering
Website Development
I managed to create a fast and convenient platform for online orders with minimal delays in the interface and quick order processing. This has reduced the number of cancellations during checkout and increased the number of completed orders.
The client reached out through a freelance platform with the problem of outdated and slow tools for accepting orders. The main goal is to create a modern, lightweight, and user-friendly service that simplifies ordering for customers and automates the process for the restaurant.
… Project tasks:
Simple and fast catalog — convenient viewing of dishes and adding to the cart
User-friendly admin panel — management of menu, prices, categories, and photos
Online payments — fast and secure integration with Monobank
Instant notifications — receiving orders in Telegram
Modern design — lightweight, responsive, and fast interface
What I implemented within the project:
Architecture on Next.js 14 (App Router) — server components for fast performance
CMS on Strapi — fully independent content management without a developer
Integration with Monobank — convenient and secure payment process
Telegram bot — instant notifications about new orders for the team
Optimized UI on Tailwind — clean, fast, and mobile-first interface
Deployment and optimization through Vercel — caching, fast loading, and stability
Tasty Corpus, as a result, is a fast, modern, and stable SaaS MVP that helps restaurants automate online orders and improve customer experience.
Technologies:
Next.js 14, React.js, Strapi CMS, Tailwind CSS, AntDesign, Monobank API, Telegram Bot API, Vercel
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Postiq — AI SaaS platform for social media management
Website Development
I managed to reduce content planning time by 35% and increase publication efficiency by 40% thanks to the combination of AI generation and posting automation in one product.
The client approached with the idea of creating a platform that combines all tools for working with content — from generation to publication. The main goal is to eliminate chaos from various services and create a single convenient SaaS for marketers and creators.
… Project tasks:
AI content generation — texts and visuals in one interface
Account management — working with multiple social networks in one place
Scheduling and auto-posting — calendar with scheduled publications
Media library — storage, search, and reuse of content
Admin panel and subscriptions — user management and billing
Scalability — readiness for growth and load
What I implemented within the project:
Frontend on Next.js + React — fast and user-friendly interface for working with content
Integration of OpenAI and DALL·E — generation of texts and images directly in the platform
Calendar with drag-and-drop — scheduling and auto-posting through API integration
Media library — storage, search, and management of content
Admin panel — roles, access, and subscription management
Stripe integration — online payments and recurring subscriptions
Authorization and security — complete auth/roles cycle
Deployment on Vercel — fast performance and global availability
Postiq, as a result, is a modern AI SaaS product that allows creating, scheduling, and publishing content in one place, saving time and simplifying team work.
Technologies:
Next.js, React.js, Node.js, NestJS, Tailwind CSS, OpenAI API, DALL·E, Stripe, Vercel, TypeScript
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DESQK - a platform for freelancers and their clients
Website Development
This project is a large-scale system for collaboration between clients and freelancers, combining tools for project management, communication, meeting scheduling, email integration, and time tracking. Over 40 users are already working in the system daily, and the time spent organizing projects has been reduced by 30% thanks to optimized processes.
The client approached us with a recommendation to create a platform from scratch that will fully cover the entire interaction cycle between freelancer and client — from the first contact to payment.
… Project tasks:
1. Create a scalable infrastructure for global deployment
2. Resolve issues related to different time zones among participants
3. Integrate Google Calendar for meeting scheduling
4. Add functionality for team collaboration and progress tracking
5. Implement sending/receiving email via Gmail API
6. Add a feedback button (with automatic URL addition)
7. Embed a time tracker to record working hours
8. Create a public freelancer profile with customization
What has been implemented:
1. Built infrastructure on AWS Amplify — scalable and stable
2. All time data is stored in UTC+0 with conversion according to the user's region
3. Integration with Google Calendar for creating meetings and reminders
4. Ability to create group projects with other freelancers
5. Gmail API — users can send and receive emails directly within the platform
6. Feedback button in the sidebar — automatically adds a link to the page from which feedback was left
7. Time tracker saves status in the session, database, and works optimally via sockets
8. Customization of the public profile — avatar, background, color, description
Technologies used:
React.js, NestJS (monorepo), AntDesign, PostgreSQL, GraphQL, AWS Amplify, Socket.io, TypeScript
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Atal - a platform for recruiters and job seekers
Website Development
The client contacted us through a freelance platform with the need to create a service to simplify the job search and personnel recruitment process in Australia. One of the important tasks was to verify the official registration of companies through government registers.
The platform should have a flexible architecture that allows easy scaling for other countries in the future.
… Project tasks:
1. Implement automatic verification of a company's official registration in Australia
2. Build a scalable web architecture with expansion capabilities
3. Create an account system for companies and their HR managers
4. Develop a user-friendly filtering and search system
5. Add chat functionality between recruiters and company HR teams
6. Create a job recommendation system for job seekers
7. Implement automatic email distribution of new relevant vacancies
8. Add analytics to evaluate the effectiveness of HR managers' work
What has been implemented:
1. Integration with the official Australian government service for registration verification by code
2. Scalable infrastructure based on Next.js, tRPC, and Prisma — ready for deployment in other countries
3. Implementation of accounts for company owners and the ability to add HR managers for job management
4. Built an intuitive search system with flexible filters
5. Real-time chat implemented on Firebase Realtime
6. Recommendation algorithm analyzes search history and user activity to suggest relevant vacancies
7. Configured automatic daily email distribution with fresh vacancies according to user profile
8. Analytics dashboard for assessing HR managers' activity and performance
Technologies used:
React.js, Next.js, Prisma, PostgreSQL, AntDesign, Firebase Realtime, Vercel, tRPC
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Carspace - online store for the Kazakhstan market
Online Stores & E-commerce
We implemented a three-click ordering system and developed targeted landing pages for each product. Thanks to this, the number of abandoned carts decreased by 32%, the checkout process time was halved, and sales increased by 18%.
The client contacted us through a freelance platform with a request to create a fast, user-friendly online store for auto parts and accessories, ready for advertising launch.
… Main project tasks:
1. Ensure instant website loading and achieve a “green zone” score on Google PageSpeed
2. Develop separate landing pages for each product
3. Create a simple ordering system — a maximum of three clicks
4. Launch a “turnkey” website ready for contextual and targeted advertising
What was implemented:
1. Loading speed was ensured by using Next.js with ISR (Incremental Static Regeneration)
2. A custom editor was created in the admin panel for generating landing pages for each product
3. UX design allows placing an order in three clicks without unnecessary fields
4. Analytics were integrated: Google Analytics and Facebook Pixel via GTM
Technologies used:
Next.js, React.js, Prisma, PostgreSQL, Tailwind, Google Analytics, Facebook Pixel
#nextJS #next.js #react.js #React #prisma #postgresql #mysqli #node.js #nodeJs #SASS #SCSS #CSS3 #HTML5 #GoogleAnalytics #googleTagManager
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Win-B - a platform for women in business
Online Stores & E-commerce
In this project, I fully digitized the process of coordinating events and services for the international business club Woman in Business. This allowed reducing administrative workload by more than 30 hours per month, cutting event organization costs by $1500/month, and increasing event registrations by 35%.
The client approached us with the idea of creating a modern online platform for club members.
… Project tasks:
1. Registration of new club members with a personal account
2. Event pages with registration capability
3. Catalog of business services offered by club members with application submission options
4. Website readiness for launching advertising campaigns
5. Support for multiple languages for an international audience
What was implemented:
1. Member registration with personal accounts and profile editing
2. Event management panel in the admin area — members can create events, specify prices, and view participant lists
3. Creation of pages describing business services and a form for user inquiries
4. Integration of Google Analytics and Facebook Pixel via Google Tag Manager
Internationalization (i18n) introduced to support multilingualism (including Ukrainian and English versions)
Technologies used:
Next.js, React.js, Prisma, PostgreSQL, Tailwind, Google Analytics, Facebook Pixel
#nextJS #next.js #react.js #React #prisma #postgresql #MaterialUI #mysqli #node.js #nodeJs #SASS #SCSS #CSS3 #HTML5 #analytics #SEO-layout #openGraph #nextAuth #Figma
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TwinSann - one of the largest furniture manufacturers in Ukraine
Online Stores & E-commerce
I reduced the website loading time to less than 1 second, which is 63.1% faster than competitors. This led to a 15% increase in purchases and brought the company over $390,000 in revenue per year.
The client — one of the largest furniture manufacturers in Ukraine — approached us with a request to create a simple and very fast website for demonstrating and selling furniture. The main goal is a minimalist but functional website with a maximum focus on speed and ease of ordering.
… Project tasks:
1. Ensure instant website loading
2. Show a wide selection of colors and product options
3. Create an ordering process in 3 clicks or one swipe action on mobile
4. Integrate analytics (Google Analytics and Facebook Pixel)
What was implemented:
1. The website was developed on Next.js with advanced caching — pages open instantly
2. Implemented product parameter selection: color, size, configuration — with interactive image replacement
3. Designed UI/UX for the fastest possible ordering on both mobile and desktop
4. Analytics integrated via Google Tag Manager: Google Analytics + Facebook Pixel
Technologies used:
Next.js, React.js, Prisma, Material UI, WayForPay, Google Analytics, Facebook Pixel
#nextJS #next.js #react.js #React #prisma #postgresql #MaterialUI #mysqli #node.js #nodeJs #SASS #SCSS #CSS3 #HTML5 #Pixelfacebook #analytics #GoogleAdwords #GoogleAnalytics #googleTagManager
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2740 USD Dmytrov — interior design studio website
Website Development
For this project, I developed an interactive briefing form that allowed the client to save over 40 hours per month on filling out and coordinating requests, reduce onboarding costs by more than $800/month, and increase the speed and quality of starting cooperation with new clients.
The client — a studio specializing in designing private houses and apartments — approached us on a freelance platform with the goal of creating a website that would serve both as a showcase of services and an entry point for orders.
… Project tasks:
1. A quick website focusing on presenting the company's services
2. A detailed multi-step form for convenient request submission
3. Ability for clients to track order status
4. Readiness for advertising launch (targeting/context)
5. Support for multiple languages
6. Ability to create SEO-optimized blog pages
7. Convenient and secure file exchange with clients
What was implemented:
1. Developed a fast website on Next.js with caching and a clear structure for service presentation
2. Created an interactive multi-step form with auto-save in session and database — clients can return to complete it later
3. Order status tracking system — each order is stored in the database with current progress
4. Analytics integrated via Google Tag Manager
5. Multilingual support through i18n
6. Built a user-friendly SEO editor for blog articles with meta tags and custom parameters
7. Implemented file exchange via Vercel BLOB — reliable and simple
Technologies used:
Next.js, React.js, Prisma, PostgreSQL, SCSS, NextAuth, Google Analytics, Facebook Pixel, Vercel BLOB
#nextJS #next.js #react.js #React #prisma #postgresql #MaterialUI #mysqli #node.js #nodeJs #SASS #SCSS #CSS3 #HTML5 #analytics #GoogleAdwords #GoogleAnalytics #googleTagManager #SEO-layout #openGraph
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UATRAFFIC - platform for buying advertising from bloggers
Website Development
In this project, I implemented verification of Instagram accounts and Telegram channels, which completely eliminated fraud from pseudo-bloggers. Thanks to this, the trust level in the platform increased by 20%, leading to higher user retention and growth in LTV (lifetime value).
The client contacted me through a freelance platform with the idea of creating a SaaS product for interaction between bloggers and advertisers. In addition to technical implementation, I helped refine the technical specifications based on my experience.
… Project tasks:
1. Implement verification of Instagram accounts to avoid fake profiles of well-known bloggers
2. Ensure verification of Telegram channels to confirm the authenticity of owners
3. Integrate an internal payment system with its own currency
4. Provide ideas for improving the platform from the perspective of logic and UX
What was implemented:
1. Integrated official Facebook API for verifying Instagram accounts
2. Used Telegram API and a bot to verify channel owners
3. Built-in Monobank payment system for transactions in the internal currency (including payments to bloggers)
4. Proposed a feature for collecting audience statistics for registered accounts, enabling advertisers to analyze reach and audience quality
Technologies used:
Next.js, React.js, Prisma, PostgreSQL, Material UI, Firebase (chat)
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1500 USD Development of the functionality of the site
Online Stores & E-commerce
The work includes the following points:
The site is built using the Next.js technology.
-Admin panel for content administration on the site
Tariffs (Functional editing, deletion, ordering services by tariff)
… -Accounts (User registration function, accounts sessions, ordering services to the account, restore the password using the mail, change the password using the phone number)
-Anketa ( Functional to create an survey with questions to users. Functional creation of the survey under the filter selected by the user when sending the application)
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450 USD Website design for the organization "Wooman in Business"
Web Design
Website design for the public organization "Wooman in Business".
The work includes page design:
The main page
Page of Events
… Page of Events
The Regions
Business services
About us
Members
The Partners
The site:
HTTPS://winb.vercel.app/
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4500 USD Marketplace e-Buket
Online Stores & E-commerce
My team has successfully implemented a "turnkey" project using cutting-edge technologies like Next.js and Prisma.
Libraries:
… Material UI
React Hook Form
The project's main functionalities include:
Bouquet Catalog: Users can browse through a wide range of flower bouquets.
Filtering System: We have implemented a powerful filtering system for the bouquets, allowing users to quickly find the desired bouquet. All filtering parameters have been incorporated into the navigation, enhancing the website's readability for Google bots and improving SEO performance.
Dynamic Navigation: Our team has implemented dynamic navigation to enhance the website's readability for Google bots. Each selection made in the filtering parameters is reflected in the URL, providing a convenient way to return to previous settings.
Admin Panel: We have developed an administrative panel to manage the content on the marketplace. The owner has full control over adding, editing, and deleting bouquets, managing florists and orders, as well as moderating bouquets to ensure quality and compliance with marketplace standards.
SEO Optimization: Special attention has been given to optimizing the website for search engines, particularly Google bots. We have utilized the Next-seo library to configure meta tags, descriptions, and other essential elements for better website readability by bots.
All these functional capabilities have been successfully implemented in the e-buket project. We are confident that our marketplace will provide users with a convenient platform to order the most beautiful floral compositions while enabling florists to showcase their talents and unleash their creative potential.
#next.js #NextJS #node.js #ecommerce #saas #website #webdesign #react.js #Javascript #next #material-ui #react-navigation
Reviews and compliments on completed projects 5
2 October 2025
23 USD
Develop a scalable backend for open-source video game
Quality
Professionalism
Cost
Contactability
Deadlines
The work was done qualitatively and professionally! Communication was clear and to the point. We slightly missed the deadlines, but the result was worth it!
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15 July 2025
94 USD
Software creation
Quality
Professionalism
Cost
Contactability
Deadlines
Maxim performed his work qualitatively. Thank him
Kate Kabak
| Personal | Response review
16 March 2023
246 USD
From React to Next.js
Quality
Professionalism
Cost
Contactability
Deadlines
Everything is wonderful! The work went without problems. I recommend!
Dmitro Bliznyuk
| Personal | Response review
12 October 2022
27 USD
Development of FoodInUA
Quality
Professionalism
Cost
Contactability
Deadlines
It almost worked =)
You need to work more attention to the details and gain experience.
Anatolyi Razumovskyi
| Personal | Response review
18 September 2022
23 USD
You need to make a 1 page.
Quality
Professionalism
Cost
Contactability
Deadlines
The work is done in general, visually everyone is well.
There are comments and nuances on the way, but because of a small budget we will close our eyes on it.
Activity
| Latest proposals 10 | Budget | Added | Deadlines | Proposal | |
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Telegram bot
45 USD
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Futures bot
45 USD
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Create a Telegram bot
45 USD
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Creation of a Human AI Assistant for Telegram groups
45 USD
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Creation of a Human AI Assistant for Telegram groups
45 USD
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Betting needs to create a bookmaker! WITH EXPERIENCE
2000 USD
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Telegram automation of message distribution in chats
2000 USD
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Bot for automatic purchase of NBU coins
23 USD
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Telegram bot
45 USD
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We are looking for a specialist in FCP and LCP.
45 USD
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