C# Backend Developer

Overview

You will join a small, high-caliber team to build a greenfield trading platform and integrate with external systems. The role sits in a fast-growing fintech environment that values deep technical craft and collaboration. You’ll tackle complex, low-latency problems in distributed .NET architectures and contribute across the product lifecycle. This is a chance to shape critical trading software in a relaxed, open culture with strong learning and growth opportunities.

Pay / Benefits

• bonus around 20%
• training budget 750
• pension
• life/health insurance
• flexible working
• regular social events

Responsibilities

• Build and improve highly concurrent, event-driven architectures using .NET and C#
• Develop and maintain APIs and integration points with external platforms
• Collaborate with a small team and Head of Development to drive product growth
• Solve complex performance and resiliency challenges in trading software
• Participate in tech talks, training, and hackathons to continuously improve technology
• Contribute to design patterns and code quality in a fast-paced fintech environment

Key requirements

• Degree
• C# and SQL
• Experience writing efficient, concurrent .NET code
• Experience working on distributed systems
• Knowledge of TCP/IP and websockets
• WPF, MVC 5, Entity Framework, Web API, Design Patterns

• collaboration
• problem-solving
• continuous learning
• C#
• .NET
• SQL