Hire a Senior Developer

Senior web and mobile developer based in Wroclaw, Poland. Available for contract work across Europe and the US. Choose your technology to see how I can help.

Next.js

Senior Next.js developer for production web apps

I've been shipping Next.js in production since version 9. From SSR-heavy SaaS platforms to static marketing sites, I handle the full stack — frontend, API layer, deployment, and everything in between. You get one senior engineer, not a rotating team.

10+ Years in productionNext.js Since version 940+ Projects deliveredEU Timezone (CET)

React

Senior React developer for complex frontend applications

I've been building with React since 2016. Component architecture, state management, design systems, performance optimization — I've done it all across dozens of production apps. Whether you need someone to join your team or build a frontend from scratch, I deliver production-grade React code.

10+ Years with React2016 React since40+ Projects shippedEU Timezone (CET)

Node.js

Senior Node.js developer for scalable backend systems

I build backend systems in Node.js that handle real production load. APIs, microservices, event-driven architectures, WebSocket servers — whatever the business logic demands. Over 10 years of experience turning messy requirements into clean, maintainable backend code.

10+ Years in productionNode.js Since v4 LTS40+ Projects deliveredEU Timezone (CET)

NestJS

Senior NestJS developer for enterprise-grade backends

NestJS is my go-to for backends that need structure. Dependency injection, module architecture, guards, interceptors, and proper testing — the patterns that make enterprise applications maintainable at scale. I build backends that your team can actually understand and extend.

5+ Years with NestJSNestJS Since v520+ Backend projectsEU Timezone (CET)

TypeScript

Senior TypeScript developer for end-to-end type safety

TypeScript is my default for every project. Not just adding types to JavaScript — I design systems where the compiler catches bugs before they reach production. From monorepo library authoring to full-stack type safety with tRPC and Zod, I make TypeScript work as a productivity tool, not a tax.

8+ Years with TypeScriptTS Since version 240+ TypeScript projectsEU Timezone (CET)

Fullstack

Senior fullstack developer — one person, full delivery

I build complete web applications from database to deployment. Next.js on the frontend, NestJS on the backend, PostgreSQL for data, and cloud infrastructure to run it all. When you need one senior engineer instead of a team, I'm the person who delivers the whole product.

10+ Years full-stackNext.js FrontendNestJS BackendEU Timezone (CET)

React Native

Senior React Native developer for cross-platform mobile apps

I build mobile apps with React Native and Expo that ship to both iOS and Android from a single codebase. From companion apps for existing web products to standalone mobile-first experiences — native performance without separate iOS and Android teams.

6+ Years with RNExpo & bare workflow15+ Apps publishedEU Timezone (CET)

Not sure which technology you need?

Book a free 30-minute call. I'll review your project and recommend the right stack — no strings attached.

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