Fullstack Developer

Senior • Hybrid

Warsaw, Poland

Get on board with B3 Consulting Poland – a Polish outsourcing company with Scandinavian roots.

We value energy, logic, experience and freedom, all embedded in a truly Scandinavian work culture.

At B3, our CARE philosophy is more than a slogan.

It’s how we think and work every day – we care about people, tailor solutions to real needs, and take responsibility for what we build. We’re not just a workplace. We’re a community of passionate people who enjoy working together and learning from each other 🙌

We are currently looking for a Senior Fullstack Developer to help us build and grow a digital innovation center in Poland. You will join a team developing a corporate investment application where 90% of your work will focus on creating brand-new solutions.

🚀 Your mission on board:

Development: You will be responsible for designing and implementing new backend and frontend features for large corporate investment platform.
Architectural Influence: Beyond coding, you will actively participate in technical analysis and high-level discussions to shape the future of our systems.
Quality & Collaboration: You will perform thorough code reviews and participate in Scrum events, ensuring the team delivers stable and scalable software.
Proactive Innovation: We look for developers who take ownership, bring their own ideas to the table, and show initiative in improving our engineering standards.

🚀 What you’ll need to come on board:

Senior Expertise: Minimum 5 years of commercial experience in fullstack development.
Solid Backend Stack: Proficiency in Java 8 / 17, the Spring Framework, and Java design patterns. You should have strong knowledge of JDBC, collections, and memory management.
Modern Frontend Stack: Extensive experience with Angular 14+, TypeScript, and reactive programming (RxJS).
Database Mastery: Strong hands-on experience with RDBMS and SQL.
Engineering Excellence: Good understanding of Git, npm, Web APIs, and OpenAPI (Swagger).
Communication & Mindset: English at a minimum B2 level and a proactive attitude towards working in an Agile/Scrum environment.

🎁 What we offer

Health & sports benefits tailored to your needs
Free running and swimming trainings
Internal triathlon team and joint competitions (Warsaw-based)
Tailor-made development paths to deepen your expertise
Cyclical initiatives that allow you to grow in other IT areas, not only your current stack

Hybrid work - 1-2/week

B3 Consulting Poland

B3 Consulting Poland is part of an international consulting organization listed on NASDAQ Stockholm, operating in 11 countries. The company specializes in delivering diverse IT projects both locally and globally, covering multiple technologies and business areas. While belonging to a global group, its Polish branch operates with full autonomy in choosing technologies, processes, and ways of working, maintaining high standards. The company embraces a Scandinavian culture rooted in logic, dialogue, and transparency, and builds its collaboration model around the CARE philosophy, emphasizing responsible project selection, transparent cooperation, and long-term development. It combines international reach with a strong local identity and a people-focused approach.

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