About BlockyDevsWe build end-to-end applications combining fintech-grade reliability with Web3 innovation.Your RoleAs a Fullstack Developer, you’ll primarily work with Node.js on the backend, React on the frontend, and occasionally contribute to smart contract development.Responsibilities Develop backend services with Node.js (NestJS/Express)* Build frontend apps with React/Next.js + TypeScript* Work with databases (PostgreSQL, MongoDB) and APIs Occasionally contribute to smart contracts (EVM/SVM) Collaborate with design, backend, and blockchain teams Requirements Strong backend skills in Node.js/NestJS At least 5 years of experience in backend applications At least 2 years of experience in maintaining production applications Solid frontend skills in React + TypeScript Database and API integration knowledge Experience mentoring mid/junior developers English at least B2 level Ability to work 100% onsite from our office near Metro Plac Wilsona, Warsaw Nice-to-have Microservices and cloud deployment experience Web3 integrations knowledge Rates (B2B/Freelance) Mid: 90 - 130 PLN/h Senior: 120 - 180 PLN/h Recruitment Process1. Intro Call (30 min) – Quick chat about your experience, expectations, and our projects.2. Technical Interview / Task – Backend (Node.js) and frontend (React) focus, with some discussion of smart contracts.3. Final Meeting – Culture/fit + project discussion.4. Offer – Fast decision if it’s a match.5. Process usually takes 2–3 weeks.6. Feedback after each stage within a few days