Senior Software Developer

Senior Software Engineer (C# .NET) | Fin Tech | Newcastle (Onsite) | Up to £150K depending on experience.

If you’re a strong C# engineer stuck in large, slow-moving environments or London burnout you’ll likely find this a very different proposition

We’re working with a rapidly scaling Fin Tech startup building a modern trading and risk technology platform in partnership with an established hedge fund. They’re creating a high-performance engineering hub in Newcastle, focused on building serious systems used in real financial decision-making.

This isn’t a maintenance role. You’ll be joining a small, high-calibre engineering team building core components of a live trading platform in a Microsoft stack, using modern C# / .NET to solve complex distributed systems problems at scale.

You’ll work across the core platform used for trading and financial operations, including

• Designing and building high-performance backend services in C# / .NET
• Working on distributed systems, low-latency services, and data-heavy workflows
• Contributing to architecture decisions (not just implement at
• Building robust, production-grade software used in real financial environment
• Collaborating closely with a tight engineering team (no layers of bureaucracy)

• C# / .NET (latest versions)
• Modern cloud and distributed system architecture
• Strong engineering fundamentals over framework churn
• Exposure to Python is a bonus (not required)

• This is a full-time onsite role (Mon–Fri) based in brand-new central Newcastle of
• fices.
  
  The setup is intentionally designed to be high-performance and collaborative
• Modern office with strong views over the city and surrounding countryside
• Active, social engineering culture (many recent relocations)
• Commute-friendly location (walking/cycling encouraged, showers on site)
• Stable hours (09:00–18:00) with flexibility where needed
• Strong relocation support for UK-based candidates

We’re looking for strong engineers who care about building real systems, not just shipping tickets:

• Strong academic background (Computer Science or related discipline) 2:1 above from Russel Group or equivalent
• Solid grounding in OOP, data structures, algorithms, design
• patterns
  
  Proven experience with modern C# / .NET development
• Experience working on complex systems (distributed / backend / data-heavy programming)
• Pragmatic, collaborative engineer who enjoys problem solving
• Interested in joining an early-stage scaling team and shaping the product

• Salary up to £150,000 dependent on xperience
• Bonus
• 25 day holiday
• Pension contribution
• Strong career progression in a scaling platform
• Social, tight-knit team culture with regular events and Friday early finishes

Must have UK right to work (no sponsorship available)