Oleksandr B.

Full-stack developer (React, Next.js, NestJS, TypeScript) for startups and small teams in the US, Europe, the UAE and South Africa. Most recently I built Y, a Danish news outlet, from scratch: reader site, editorial CMS, realtime live blogs and an Android app on one API. 1,024 hours, rated 5.0. What I can take on • New products and MVPs, from database schema to production deploy • Feature work and long-term development on an existing codebase • Performance, server rendering and technical SEO for React and Next.js sites • Integrations: payments, auth, third-party APIs and AI features (OpenAI, Claude) Recent work • Y, a Danish news outlet: Next.js, NestJS, PostgreSQL, AWS and Terraform, a Capacitor Android app, live blogs with Reuters and Ritzau wire feeds • SV Dental Care, a private clinic: multilingual website, patient cabinet and CMS, server rendering and technical SEO in three languages • Batmon, my own app: personal finance with bank sync, receipt QR scanning and an AI assistant on the Claude API, built with React Native and Django Technologies Frontend: React, Next.js, TypeScript, Redux Toolkit, Zustand, TanStack Query, Tailwind CSS, shadcn/ui, Material UI, Three.js, Framer Motion Backend: Node.js, NestJS, Express, REST, GraphQL, WebSockets, queues and background jobs (BullMQ, Redis), JWT and OAuth 2.0 Databases: PostgreSQL, MySQL, MongoDB, Redis, Supabase, Firebase, Prisma, TypeORM Cloud and DevOps: AWS (ECS, Lambda, S3, CloudFront, RDS, SES), Docker, Nginx, Terraform, GitHub Actions, GitLab CI/CD Mobile: React Native, Expo, Capacitor AI: OpenAI and Claude APIs, embeddings and RAG, automation workflows Industries: media and news, healthcare, fintech, SaaS and internal business tools. How I work Remote, with working hours that overlap Europe, the UAE and South Africa, and mornings in the US. You get regular demos, short written updates and code your team can maintain after me. Available for short projects and long-term collaboration. Send a short description of what you need, and I'll reply with questions and a plan.