RemoteUp to 120 PLN / h
C#ASP.NET MVCSQL ServerAzureDockerTDDCI/CD

About us


At Syntelise, we build technology that truly matters.

We design and deliver digital products, data-driven systems and custom software that solve real business problems — not just ship features. Our teams combine engineering excellence with product thinking to create solutions that scale, last and make an impact.

We work in small, autonomous squads where developers have real influence on architecture, technology choices and product direction.

If you like ownership, clean code and meaningful projects — you'll feel at home here.

This job is all about:


  • designing and developing scalable backend services in .NET / C#
  • building APIs and integrations for web and mobile products
  • shaping system architecture and technical decisions
  • writing clean, testable, maintainable code
  • collaborating closely with frontend developers, QA and product managers
  • improving performance, security and reliability
  • participating in code reviews and knowledge sharing

What we're looking for


Must have

  • 3+ years of experience with .NET / C#
  • experience building REST APIs and backend services
  • solid knowledge of SQL databases
  • understanding of software architecture and design patterns
  • experience with Git and code reviews
  • good English communication skills (B2+)

Nice to have

  • .NET Core / ASP.NET Core
  • cloud experience (Azure / AWS)
  • Docker / containers
  • CI/CD pipelines
  • automated testing (xUnit/NUnit)
  • microservices or event-driven architecture
  • frontend basics (React/Angular) is a plus

Mindset

  • ownership and accountability
  • problem-solving attitude
  • willingness to challenge ideas and suggest improvements
  • team player, not a solo hero

What we're offering


meaningful, non-enterprise-bureaucracy projects
real impact on architecture and technical decisions
small, experienced team (no micromanagement)
flexible working hours
100% remote work
B2B contract
competitive salary

Join our team


Information on processing of personal data:
The controller of your personal data is Syntelise Damian Sibiński, with its registered office in Warsaw (02-495), at ul. Herbu Oksza 21/76 (hereinafter: "Syntelise"). Syntelise can be contacted via email at join@syntelise.com or by phone at +48 725 321 400. Your data will be processed for purposes related to your participation in the recruitment process. More information regarding the processing details, including your rights, can be found here.

Consent for future recruitments:
By submitting, you consent to Syntelise processing your personal data contained in the recruitment application for future recruitment processes. You have the right to withdraw your consent at any time. Withdrawal of consent does not affect the lawfulness of processing carried out before its withdrawal.