Senior Fullstack Developer

At TeaCode, we build digital products that actually make sense – for real users, real businesses, and long-term growth.We’re looking for a Senior Fullstack Developer who wants more than just “another project” — someone who enjoys building products, taking ownership, and working closely with people. You’ll join one of our product teams and play an important role not only in development, but also in shaping technical decisions and supporting less experienced team members.   Tech stack you’ll work with Depending on the project, you’ll work mainly with: • Nest.js • Next.js • TypeScript • React • Node.js • PostgreSQL • Supabase  • React Native    What we’re looking for We’re looking for a senior — not just by years, but by mindset.   You are someone who: • has 8+ years of commercial experience in software development • has at least 2 years of experience leading projects or development teams • has commercial experience with Next.js and Nest.js • feels confident with TypeScript, React, and Node.js • communicates well in English (min. B2+) • speaks Polish fluently (C1 or native – must-have) • understands the full software development lifecycle • using AI tools to support efficiency on daily basis • can take responsibility, make technical decisions, and explain why - taking under consideration business aspects of product development • enjoys mentoring, supporting, and guiding junior developers • likes working with people, not just with code 🙂   Nice to have (but not required): • experience with Supabase • experience with React Native   How we work • We work as a team, not as a group of isolated individuals • Seniors are expected to:• take ownership • dive into business side of product development • support junior developers • help shape architecture and technical direction • We work directly with clients, so clear communication and openness really matter • We care about building good products, not just delivering tickets   What we offer • Long-term cooperation on international projects • Work with clients from all over the world • Flexible working hours and 100% remote setup • Real influence on technical and product decisions • A team that genuinely cares about quality, collaboration, and growth • Development in AI tools and modern workflows • Space to grow as a technical leader, not just a developer   About us: • 50+ people on board • Warsaw-based software house with a strong product mindset • Friendly, supportive atmosphere — no corporate nonsense  More about us 👉 https://www.teacode.io/ Recruitment process • HR Interview (30 min) A conversation with our Head of HR to understand your experience, motivation, and expectations. • Short Analytical Test The goal is to assess analytical thinking, attention to detail, and the ability to work with patterns and language — not advanced technical knowledge. • Technical Interview (60 min) A meeting with one of our Tech Leads where you’ll talk about:• solving technical problems • architecture and code quality • decision-making as a senior • how you use AI tools in your daily work • Final Interview (30 min) A conversation with our Head of Delivery focused on: • Business understanding of the product • culture fit • leadership mindset • teamwork and ownership • your willingness to grow and support others • Decision Usually within one week after the final interview.