C# Developer (All Levels)

Location: UK-based | Flexible Hybrid Working

Sector: Financial Technology / Trading Systems

We’re working with a well-established yet fast-growing technology-led business operating in the financial markets space. They’re expanding their engineering team and are looking for C# Developers at all levels, from early-career engineers through to senior and lead profiles.

This is an opportunity to join a high-impact engineering environment where software quality, performance, and clean design genuinely matter. You’ll be working on mission-critical systems used in real-time, high-throughput environments, with engineers who value pragmatism, collaboration, and continuous improvement.

What you’ll be doing

• Designing, building, and maintaining high-performance C#/.NET applications
• Working on complex, data-rich systems where reliability and scalability are key
• Collaborating closely with other engineers, product stakeholders, and domain experts
• Contributing to architectural decisions, code quality, and technical direction (level dependent)
• Improving existing systems as well as building new features from the ground up

What they’re looking for

• Commercial experience with C# and .NET (level of experience flexible)
• A solid grasp of software engineering fundamentals (OO design, testing, clean code)
• Comfort working in collaborative, agile engineering teams
• An interest in building robust, well-engineered systems rather than quick fixes
• Experience in financial systems, trading, or high-performance environments is a plus, but not required

Why this role stands out

• Flexible remote working with trust-based autonomy
• A genuinely strong engineering culture with experienced technical leadership
• Exposure to complex, real-world systems where your work has visible impact
• Clear progression opportunities for developers looking to grow technically or take on more responsibility
• Competitive compensation package depending on level and experience

This role is open to C# developers at multiple levels, so if you’re passionate about building well-crafted software and want to work in a technically challenging but supportive environment, we’d love to hear from you.