Job Description
Senior Software Engineer (C# .NET) | FinTech | 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 FinTech 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.
What you’ll be doing
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 implementat
* Building robust, production-grade software used in real financial environment
* Collaborating closely with a tight engineering team (no layers of bureaucracy)
Tech environment
* C# / .NET (latest versions)
* Modern cloud and distributed system architecture
* Strong engineering fundamentals over framework churn
* Exposure to Python is a bonus (not required)
Why Newcastle
* 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
What they’re looking for
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
* patternsProven 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
They offer
* Salary up to £150,000 dependent on xperience
* Bonus
* 25 day holiday
* Private healthcare (Bupa)
* 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)