Senior C# Developer with Fintech experience

Warsaw remote Until 8/22/2026 First posted May 28, 2026 Last posted May 28, 2026
Job description

On behalf of our client – a global financial institution – we are looking for an experienced specialist for the position of Senior C# Developer.

ABOUT THE PROJECT & TEAM: You will join a distributed, international team responsible for the development of core systems in the areas of XVA, Liquidity, and Financial Resource Management. The project is currently at an exciting turning point – migrating to a modern, highly advanced event-driven architecture on the back-end side. The developed UI tools support the daily operations of hundreds of users in a dynamic market environment. We work in a collaborative, agile environment with a strong emphasis on clean code and software craftsmanship.

💡 CONDUCT & ATTITUDE EXPECTATIONS:

  • High autonomy combined with excellent teamwork skills.

  • Excellent communication, analytical, and organisational skills.

  • Attention to detail (especially under time pressure).

  • Proactive, flexible approach to daily engineering challenges.

  • Motivation to work directly with front-office IT.

  • Integrity and discipline.

  • Role model supporting a culture of good conduct.

  • Proactivity, transparency, and accountability in managing conduct risks.

  • Considering the impact of decisions on colleagues, partners, and clients; escalation in case of doubts.

Compensation (from employer):
170–190 PLN per-hour-wage

About this role

Summary

Develop core banking systems, migrate to event-driven architecture, support front-office IT.

Job title

Senior C# Developer

Experience level

senior level

Industry

financial

Location requirements

Warsaw-based position with remote work not specified.

Salary

170–190 PLN per-hour-wage

Management role

No

Skills & keywords

Required skills

C#financial systemsagileclean code

Preferred skills

None specified

Specializations

C#fintechevent-driven architecturecore systems
Locations

Structured locations inferred from the posting.

Warsaw, Poland

On-site City