Senior C# Trading Systems Engineer

VISTULO sp. z o.o. is seeking a Senior C# Trading Systems Engineer to join a core team building high-performance FX electronic trading systems for a top North American bank. This is a unique opportunity to work on ultra-low-latency architectures where milliseconds matter and to contribute to the development of next-generation capital markets solutions.

Key responsibilities

• Design and implement robust software solutions for FX trading systems using C# .NET.
• Collaborate with cross-functional teams to research and implement system enhancements.
• Create thorough test cases to ensure software stability and reliability.
• Support production issues, including performing root-cause analysis and diagnosis.
• Process business requirements to derive and implement high-quality technical solutions.

Requirements

• 7+ years of professional C# .NET development experience with expertise in multi-threading and performance tuning.
• Proven experience building backend services for front-office trading systems.
• Deep understanding of front-office workflows and electronic trading platforms.
• Familiarity with the FIX protocol and low-latency system design.
• Ability to align work with a 6-hour overlap with US Eastern business hours.

What we offer

• Work on a large-scale, actively developed trading system with a world-class team.
• Direct collaboration with client teams in North America and Poland.
• A long-term, fully remote position offering professional growth and stability.
• Opportunity to influence technological solutions and product development.