I build seamless full-stack
applications,
from front to back.
Work Experience
Full-stack Developer
Freelance • 2023 – Present
Designing and developing full-stack web applications using React, Next.js, Node.js, NestJS, PostgreSQL, and MongoDB. Focused on scalable architecture and clean code.
Full-stack Developer
Freelance • DesignLab Project • Nov 2024 – Jan 2025
Developed a commercial SaaS platform from scratch. Built REST APIs with Nest.js and integrated payment flow (WayForPay). Implemented responsive UI in React with Redux and SASS.
Backend Team Lead
Freelance • DrinkMaster Project • Nov 2023 – Dec 2023
Led a small backend team to deliver API for a drinks recipe app. Built RESTful backend with Node.js, Express, MongoDB. Integrated Cloudinary for image upload and management.
What I do
Custom Web Applications
Develop full-stack applications — from design to seamless user flows. Focused on clean, maintainable code.
Backend APIs & Integration
Build with Node.js. Auth, file storage, payment systems and scalable logic — ready for production.
Frontend Development
Responsive layout with mobile-first approach. Reusable components in React or Next.js.
Authentication, Cloud & Payments
Secure auth flows (JWT), recurring payments, and third-party service integration (AWS, WayForPay, Backblaze).
My Core Tech Skills
Frontend
React, Next.js, Redux-Toolkit, Tailwind CSS, MUI, SASS, Styled-components.
Backend
Node.js, Express.js, NestJS, PostgreSQL (TypeORM), MongoDB (Mongoose), REST APIs, Swagger.
Dev Tools
Git & GitHub, Linux environments, CI/CD pipelines and deployment workflows.
Other Skills
TypeScript, JWT Auth, AWS, Backblaze B2, mobile-first approach, Figma to code.
References
“I had the pleasure of working with Oleksandr, and I can confidently say he is a top-notch FullStack developer. He doesn’t just write code — he solves real problems, finds smart solutions to complex challenges, and always delivers results. His attention to detail, technical expertise, and reliability make him a valuable asset to any team. If you’re looking for a developer who truly knows his craft and gets things done — Oleksandr is the one to trust!”
Andrew Mamontov
Lead UX/UI Designer | Mentor UX/UI | Senior Product Designer, Geniusee
“Oleksandr played a key role in helping us restructure and optimize a complex frontend stack. His ability to dive into a project mid-stream and quickly add value is impressive. He worked fast, wrote clean code, and communicated in a way that gave the whole team clarity.”
Tomasz Lewandowski
Technical Director, Pixelmind
“Working with Oleksandr was a seamless experience. He not only delivered the functionality we needed — but also suggested improvements that made our platform more scalable. His professionalism, code quality, and responsiveness made a strong impression on our team.”
Pavel Kovalsky
CTO, CoreDev Solutions
I'm Aleks
A full-stack developer with a focus on building fast, scalable, and maintainable web applications. With 2+ years of hands-on experience using React, Next.js, Node.js, and Express — I focus on transforming ideas into value-driven, user-focused products that deliver measurable impact.
My services
Standard Web App
$750- Frontend (Next.js) + Backend (Node.js/Express)
- Responsive UI, routing, basic forms
- Deployed & ready to launch in 7–14 days
App + Service Integration
$1500- Payment systems (WFP, LiqPay, etc)
- Storage or third-party APIs (BackBlaze/S3)
- Delivery 2–4 weeks
Full-stack Business App
$2000+- Auth, admin zones, dashboards, CMS/CRM logic
- Advanced backend logic + file uploads
- Integrations, SEO structure, scaling-ready
* Actual cost may change depending on functionality, integrations, and business needs.
