Mid/Senior Fullstack Developer

Mid • On-site

$90 - $130/hr

Warsaw, Poland

About BlockyDevs

We build end-to-end applications combining fintech-grade reliability with Web3 innovation.

Your Role

As 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

Good backend skills in Node.js/NestJS
2–4 years of commercial experience in backend or fullstack development
Experience working with production applications (bugfixing, small features, deployments)
Practical frontend experience with React + TypeScript
Basic experience with databases (SQL/NoSQL) and API integrations
Ability to write clean, maintainable code following best practices
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 Process

1. 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

BlockyDevs sp. z o.o.

BlockyDevs sp. z o.o. is a company operating at the intersection of fintech and Web3, specializing in the development of end-to-end applications. The company is known for its commitment to combining fintech-grade reliability with innovative Web3 solutions. BlockyDevs is based in Warsaw, Poland, and emphasizes a collaborative work environment, as evidenced by its focus on teamwork across design, backend, and blockchain teams. The company values clean, maintainable code and best practices, and it seeks to foster a culture of innovation and technical excellence. BlockyDevs is positioned as a forward-thinking player in the tech industry, leveraging cutting-edge technologies to deliver robust and reliable applications.