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December 17, 2025

Senior C# Engineer

Senior • Hybrid

$35,000 - $43,000/

Warsaw, Poland

Your Responsibilities

  • System Development: Build and optimize multithreaded, high-throughput applications supporting flow and lifecycle processes.

  • Ownership & Accountability: Drive technical decisions and take responsibility for the stability and scalability of core systems.

  • Problem-Solving: Balance hands-on coding with system troubleshooting and second-line production support.

  • Innovation: Identify opportunities to improve existing systems, introduce new technologies, and ensure long-term resilience.


What We’re Looking For

  • Experience: 5+ years in enterprise-grade software engineering (8+ preferred), with deep knowledge of C# and .NET Core.

  • Technical Skills:

    • Strong background in multithreaded programming and object-oriented design.

    • Experience with service-oriented architectures and enterprise messaging systems.

    • Familiarity with AWS components.

  • Collaboration: Excellent communication skills and the ability to convey technical concepts to diverse audiences.

  • Engineering Practices: Exposure to DevOps pipelines and tools (Git, JIRA, Jenkins, Octopus Deploy).


Nice to Have

  • Knowledge of Agile and test-driven development practices.

  • Exposure to front-end technologies (React, Angular).

  • Experience within finance area

  • Awareness of post-trade lifecycle workflows.