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April 28, 2026

Senior .NET Developer

Senior • Hybrid

Warsaw, Poland

We are looking for a Backend Developer to join the product development of Music Backend (BE) platform. You will be part of a team responsible for building and evolving a scalable streaming platform, delivering product and business improvements in close collaboration with cross-functional teams.

Your responsibilities:

  • Contribute to the development and improvement of the backend music streaming platform

  • Design and implement scalable, testable, and maintainable backend solutions using appropriate architectural patterns

  • Collaborate with Product Owners and cross-functional teams to shape user experience

  • Develop and maintain front-facing backend services enabling content discovery and playback

  • Ensure operational stability through monitoring, upgrading, and maintaining backend systems

  • Write high-quality code with a strong focus on performance, reliability, and customer value

  • Explore and apply modern technologies within the backend ecosystem

  • Work in an agile development environment

We are looking for you, if you have:

  • Strong experience with .NET / C#

  • Solid understanding of Object-Oriented Design (OOD), SOA, and SOLID principles

  • Experience with SQL and NoSQL databases

  • Experience designing and consuming RESTful APIs

  • Experience with distributed, large-scale, high-load systems

  • Familiarity with CI/CD pipelines

  • Experience using Git for version control

Nice to have

  • Experience with application monitoring (preferably Datadog)

  • Experience working with MongoDB

  • Knowledge of AWS

  • Experience developing in Python

  • Experience with GraphQL

We offer:

  • Participation in interesting and demanding projects

  • Flexible working hours

  • A great, non-corporate atmosphere

  • Stable employment conditions (contract of employment or B2B contract)

  • Opportunities for development and promotion

  • Attractive package of benefits

  • Work model: remote or hybrid (2 days per week from the office)

We reserve the right to contact the selected candidates.