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borys_u

Borys U.

@borys_u

Full Stack Developer, NodeJS Express NestJS React NextJS

Ukraine
English, Ukrainian
About me
I’m a Full Stack Developer specializing in NodeJS, ExpressJS, NestJS, React, and NextJS. I build responsive web applications, scalable REST APIs, and backend services using TypeScript and JavaScript. I can help with developing new features, fixing bugs, integrating APIs, authentication, database integration, and improving existing applications. My experience includes MongoDB, PostgreSQL, JWT authentication, Google OAuth, Socket.IO, Redux Toolkit, and modern frontend and backend development. I focus on clean, maintainable code and reliable solutions tailored to your project.... Read more

Skills

b
borys_u
Borys U.
Offline • 
Average response time: 1 hour

See my services

API & Integrations
I will build a scalable rest API with nodejs, expressjs or nestjs
From$50 / projectMore details
Figma to Web & App
I will convert figma to react or next js, figma design to code front end development
From$70 / projectMore details

Portfolio

Work experience

Self-Employed_/ Freelancer

Full Stack Developer

Self-Employed / Freelancer • Freelance

Dec 2023 - Present • 2 yrs 9 mos

I’m a Full Stack Developer specializing in Next.js, React, Node.js, NestJS, Express JavaScript and TypeScript. I build modern web applications, REST APIs, authentication systems, dashboards, e-commerce platforms, and real-time applications. If you need a developer who can handle both the frontend and backend, I can help you build a new application, add features to an existing project, integrate an API, fix bugs, or improve performance and architecture. What I can help you with • Build full-stack applications using Next.js/React on the frontend and Node.js with Express.js or NestJS on the backend • Develop responsive and modern frontend interfaces • Build scalable REST APIs and backend services • Implement JWT authentication and authorization • Integrate Google OAuth and other authentication providers • Build role-based access control (RBAC) • Develop QR-based authentication systems • Implement real-time functionality with SocketIO • Work with PostgreSQL and MongoDB databases • Integrate third-party APIs and services • Build admin dashboards and data-driven applications • Fix bugs and improve existing Next.js, React, and Node.js applications • Optimize application performance and code structure • Containerize applications with Docker and prepare them for deployment My main stack Frontend: Next.js, React, TypeScript, JavaScript, Redux Toolkit, Tailwind CSS, SCSS Backend: Node.js, NestJS, Express.js, REST API, SocketIO Authentication: JWT, Google OAuth, RBAC, QR Authentication Databases: PostgreSQL, Sequelize ORM, MongoDB, Mongoose ODM, Tools: Docker, Git, GitHub, Postman, Linux, Vercel, Render Recent project experience QR Security Authentication Platform Built a full-stack authentication platform using Next.js, Express.js, TypeScript, MongoDB, SocketIO, JWT, and Google OAuth. The system includes QR-based login, cross-device authentication, secure authorization, session management, real-time communication, and REST APIs. Full-Stack E-commerce Platform