Get on board with B3! 🚀
As Polish outsourcing company with Scandinavian roots, we particularly appraise values such as Scandinavian energy, logic and experience, this all comes in a Scandinavian work culture.
Our "CARE" philosophy is not just a word - it is a way of thinking. We take care of your needs, adapt solutions and take appropriate care of everything.
B3 Consulting Poland is not just a workplace, it is a community of enthusiastic people 🙌🙌
If you want to be part of our crew, we invite you on a journey to a galaxy far, far away 🚀
We are currently looking for
Senior .NET Back-End Developer
who will join the project and and help develop
scalable back-end cloud services (AWS)
🚀Role focus areas:
Designing and developing high‑performance back-end services in .NET (C#) in an AWS cloud environment, with a strong focus on scalability, reliability, and performance.
Building and maintaining solutions based on AWS (including cloud services and NoSQL databases such as DynamoDB) and integrating the back end with other systems and interfaces.
Collaborating with Front-End, QA, and business stakeholders: taking part in architectural decisions, code reviews, sprint planning, and supporting less experienced engineers.
🚀What you need to join us:
Must have:
At least 5 years of commercial experience in back-end development with .NET (C#) at Senior level, covering the full software development lifecycle.
Hands-on experience with AWS in production environments, including cloud services and NoSQL databases (e.g. DynamoDB).
Strong back-end engineering fundamentals: API design, integrations, performance, maintainability, and solid system architecture.
Experience with Git and modern code review workflows, as well as working in an Agile environment (Scrum/Kanban).
Very good communication and teamwork skills, availability to work with a Poland-based team (PL/EU working hours), and a degree in Computer Science or a related field (or equivalent experience).
English - B2/C1
You need to live in Poland and/or be eligible to work here
Nice to have:
Knowledge of TypeScript/JavaScript (e.g. when collaborating with Front-End or in tooling/testing support).
Familiarity with testing tools such as Playwright or Selenium and an understanding of QA methodologies and release processes.
Experience or education in Electrical Engineering or a related technical field.
A mentoring mindset: enjoys sharing knowledge, coaching others, and reinforcing good practices through code reviews, pairing, and pragmatic guidance.
🚀On board with B3 you will receive:
Health and sports benefits tailored to your needs
Free running and swimming training, internal triathlon team, joint competitions (Warsaw)
Tailor-made development activities to deepen expert knowledge
Cyclical initiatives allowing development in IT fields other than the current one