Job description
B3 Consulting's vision is to create a world of technology in which people come first. We come from Sweden, and our mission is to take care of how we live and work . Our "Care" philosophy results in technology meeting care, which allows us to build long-term relationships while creating innovative solutions. At B3, we unleash the potential of companies through IT outsourcing in a unique, Scandinavian model.
We are one of the fastest growing companies in Poland, awarded the title of "Business Gazelle" in 2023 💪 If, like us, you value: 💥 Energy 💡 Logic 💻 Experience This is great - we fit together perfectly! The project comes from Natue/Forestry industry and concerns building a large-scale, real-time platform powering mobile apps, IoT devices, and backend services for hundreds of thousands of users — even under extreme peak loads.
We’re looking for engineers passionate about building robust, long-lasting systems — not just shipping features. Your tasks:
- Design, build, and operate backend microservices using .NET (C#, ASP.NET Core)
- Build and evolve client-facing APIs with strong focus on: versioning; backward compatibility; long-term maintainability
- Work with event-driven systems ( Google Pub/Sub, Kafka )
- Improve platform stability, performance, and scalability
- Participate in production support and incident resolution
- Collaborate closely with platform, product, embedded, and mobile teams
- Take end-to-end ownership from design to production Your skills: ·Strong experience with .NET backend development (C#, ASP.NET Core)
- Solid understanding of microservice architectures
- Experience building production-grade APIs
- Experience with messaging systems (Google Pub/Sub and/or Kafka)
- Proven experience running and maintaining production systems
- Strong testing and debugging skills (unit, integration, performance)
- Comfortable with Git and modern development workflows (code reviews, CI/CD)
- Clear communication and documentation skills
- Strong ownership mindset — you care about what happens after deployment
- Willingness to use AI tools responsibly to improve development productivity
- Fluent in English communication 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 We are waiting for you! 🦓