Senior C# .NET Developer (Trading Systems)

Senior C# .NET Developer (Trading Systems)

Step into a high-impact engineering role at the heart of a mission-critical trading platform powering global financial markets. You will build and optimize low-latency systems where every millisecond matters, directly influencing real-time trading performance. This is a rare opportunity to combine deep technical challenges with tangible business impact.

About the role

• Develop and maintain high-performance trading applications using C# and .NET;
• Build and integrate real-time communication solutions using FIX protocol, WebSockets, and messaging systems;
• Design and implement scalable, low-latency architectures;
• Collaborate with international teams across multiple time zones;
• Contribute to front-end components using Angular, Blazor, or React;
• Ensure system reliability through testing, monitoring, and incident management;
• Document technical flows, APIs, and trading logic clearly.

Who are you

• Experience with C# and .NET;
• Familiarity with building reliable, high-performing applications;
• Experience working with APIs and integrated systems;
• Comfortable working in a fast-paced and dynamic environment;
• Strong communication skills and ability to collaborate with international teams;
• Experience in a larger or complex IT environment.

Nice to have:

• Knowledge of FX trading systems and FIX protocol;
• Affinity with mathematical concepts or trading calculations.

About the Company

You will be part of an international financial organization operating in a highly dynamic and technology-driven environment. The company focuses on delivering reliable, high-performance systems that support global trading operations. Collaboration, innovation, and precision are key elements of the culture, with teams distributed across multiple regions.

Benefits and conditions

• All-in yearly salary up to approximately €95,000 (depending on experience);
• 12-month contract with option to extend;
• Hybrid working model (minimum 2–3 days on-site);
• International working environment with global collaboration;
• Opportunity to work on mission-critical trading systems;
• Access to professional development and knowledge sharing.