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You will get a full-stack developer full-time MERN stack OpenAI API ChatGPT integration

Polina P.Status: Offline
Polina P. Polina P.
5.0
Preview image

Let a pro handle the details

Buy Other Web Programming services from Polina, priced and ready to go.
Polina P.Status: Offline
Polina P. Polina P.
5.0
Preview image

Let a pro handle the details

Buy Other Web Programming services from Polina, priced and ready to go.

Project details

You will get a skilled full-stack developer with extensive experience building modern, scalable web applications from concept to deployment - handling frontend, backend, databases, API integration, cloud deployment, and AI features.

What I Deliver:
Responsive frontends with seamless UX
Secure backend APIs and optimized databases
Third-party integrations (payments, AI, real-time features)
Cloud deployment with scalable infrastructure
AI-powered features (OpenAI, ChatGPT, custom LLMs)
Clean, maintainable code
Complete ownership from planning to production

Tech Stack: Frontend: JavaScript, TypeScript, React, Redux, Next.js, Tailwind CSS, Material UI Backend: Node.js, Express, NestJS, REST APIs, GraphQL Databases: PostgreSQL, MongoDB, MySQL, Firebase, Supabase AI: OpenAI API, ChatGPT, custom LLMs Cloud: AWS (Lambda, S3, EC2, Cognito), Vercel, Netlify

Ready to bring your project to life? Let's discuss your requirements and build something great together!
Web Programming Project
Browser Extension, API Development, API Integration, Data Dashboard
Programming Languages
HTML & CSS, JavaScript, TypeScript
Coding Expertise
Localization, Performance Optimization, Security

What's included $7,000

These options are included with the project scope.

$7,000
  • Delivery Time 30 days
  • Number of Revisions 9
    • Source Code
5.0
2 reviews
100% Complete
(2)
1% Complete
(0)
1% Complete
(0)
1% Complete
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1% Complete
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PK

Pylyp K.
5.00
Apr 2, 2026
Full Stack developer Next.js NestJS TypeScript AI-development Web Application Marketplace Polina is a highly skilled full-stack developer. I am very satisfied with her work. I needed some updates to my AI app, and she did an excellent job. I appreciated both speaking and learning from Polina and the results of her work.

ET

Elena T.
5.00
Mar 10, 2026
Full Stack developer Nodejs React Next AWS OpenAI API for SaaS web application She joined the project to fix and improve an existing React/Next.js + Node-based application with OpenAI integration, and quickly got up to speed with the codebase. Polina handled UI fixes and layout improvements with strong attention to detail, cleaned up some bugs, and implemented small feature updates without disrupting existing functionality.
Polina P.Status: Offline

About Polina

Polina P.Status: Offline
Full stack developer React Next Node Nest Supabase | Firebase AWS
100% Job Success
5.0  (2 reviews)
Kharkiv, Ukraine - 3:17 am local time
Web Development | Full-Stack Development | Front-End Development | Back-End Development |
JavaScript | TypeScript | Firebase | Supabase | ReactJS | NextJS | NodeJS | NestJS | ReduxJS | ExpressJS | Material UI | Shadcn UI | TailwindCSS | RadixUI | ChakraUI | SCSS | HTML 5 | CSS 3 | AWS | Docker | Mongo DB | PostgreSQL | OpenAI API | Neo4j | Pinecone DB | Sequelize | TypeORM | Stripe | Twilio | SendGrid | WebSockets | socketio

Welcome to my profile!✌️

I am a results-driven Full-stack developer with 3 years of professional experience, ready to build modern, reliable and high-performance products using best practices in technology. I specialize in JavaScript-based tech stacks and work with technologies including JavaScript, TypeScript, React.js, Material UI, Tailwind CSS, Redux, Node.js, NestJS, Firebase, MongoDB, PostgreSQL, MySQL, GraphQL, and more.

🎨Front-End Expertise: JavaScript, TypeScript, Next.js, React.js (react-storybook), Redux.js (Redux Toolkit, Redux Thunk), Material UI, Ant Design, Tailwind CSS, styled-components, SCSS, Less, Sass, HTML5, CSS3, Socket io, Chart.js, ApexCharts, Highcharts, Recharts, ECharts

💎Back-End Expertise: JavaScript, TypeScript, Node.js, Express.js, NestJS, Firebase, MongoDB, PostgreSQL, MySQL, Pinecone DB, Neo4j, GraphQL, Sequelize, TypeORM, Stripe, Twilio, SendGrid, RabbitMQ, Socket io, WebSockets, Auth0, JWT, CI/CD (GitHub Actions, GitLab, Bitbucket), Mocha, Jest, Docker, AWS (EC2, Lambda, API Gateway, S3, RDS, Cognito, Elastic Beanstalk), Algolia, ElasticSearch

🎯What I Deliver:
Responsive, pixel-perfect web applications from Figma, Sketch or Adobe XD designsScalable REST and GraphQL APIs with secure authenticationReal-time features using WebSockets and Socket ioThird-party integrations (Stripe, PayPal, Twilio, Google Maps, SendGrid)Cloud deployment and CI/CD pipelines (AWS, Vercel, Netlify)Data visualization dashboards with Chart.js and ApexChartsE-commerce platforms, SaaS applications, and fintech solutions

✨When you work with me, you can expect:
Strong technical expertise across the full stackHigh-quality, detail-oriented workA broad and continuously growing skill setClear communication and collaborative mindset (fluent English)High reliability and commitment to deadlines

Web Development frontend skills I'm ready to provide:

JavaScript and TypeScript programming languages
React nextjs React TypeScript Front end developer React frontend development
Next.js react full stack nextjs
Skills and expertise in Material UI MUI MaterialUI AntDesign Ant frameworks
Skills and expertise in Tailwind CSS TailwindCSS Tailwind and styled-components styled components
Skills and expertise in data visualization libraries chart.js recharts.js Apexcharts Highcharts
Expertise with socketio and websockets
Frontend expertise in HTML CSS HTML5 CSS3 SCSS Sass Less


Web Development Back-End skills I'm ready to provide:

Node.js backend node.js backend AWS backend developer nest.js
Nest.js backend developer nestjs fullstack nestjs
Express.js backend developer Express back-end Express back end
AWS aws developer full stack developer aws node.js aws nestjs aws AWS (Amplify, Lambda, Cognito, EC2, S3, etc.)
Firebase backend Firebase nextjs Firebase
Supabase back end Supabase
Databases PostgreSQL MongoDB Postgre SQL Mongo DB
GraphQL Graph QL
Writing tests using Mocha Jest frameworks
Docker
Auth0 0Auth JWT CI/CD RabbitMQ Sequelize TypeORM
Elasticsearch
Stripe Stripe API Payment system integration
chatGPT API integration
SendGrid API SengGrid email API Twilio API Twilio SMS API
Low Coding Prompt Engineering Semi Vibe Coding

Let's bring your vision to life! Whether you need a complete web application built from scratch, API development, frontend modernization or ongoing maintenance and feature development, I'm here to help. Feel free to reach out to discuss your project, I'm ready to start delivering results today.

Steps for completing your project

After purchasing the project, send requirements so Polina can start the project.

Delivery time starts when Polina receives requirements from you.

Polina works on your project following the steps below.

Revisions may occur after the delivery date.

Review project requirements

Review the work, release payment, and leave feedback to Polina.