At a Glance
- Tasks: Design and build high-performance backend services in C#/.NET for a modern trading platform.
- Company: Rapidly scaling FinTech startup with a collaborative engineering culture in Newcastle.
- Benefits: Up to £150K salary, 25 days holiday, private healthcare, and strong career progression.
- Other info: Enjoy a vibrant office culture with social events and flexible working hours.
- Why this job: Join a dynamic team shaping innovative financial technology and make a real impact.
- Qualifications: Strong C#/.NET experience, solid grounding in OOP, and a passion for problem-solving.
The predicted salary is between 120000 - 150000 £ per year.
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:
- 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
- Building robust, production-grade software used in a real financial environment
- Collaborating closely with a tight engineering team
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 offices.
- 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:
- Strong engineers who care about building real systems, not just shipping tickets.
- Strong academic background (Computer Science or related discipline) 2:1 above from Russell 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.
They offer:
- Salary up to £150,000 dependent on experience.
- Bonus.
- 25 days 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).
Senior Software Developer - Relocation supported employer: SR2 | Socially Responsible Recruitment | Certified B Corporation™
SR2 is an excellent employer, offering a dynamic work culture that values innovation and collaboration in the heart of Edinburgh. With a focus on employee growth, we provide opportunities for professional development and the chance to make a meaningful impact in government digital transformation projects. Our flexible part-time role allows for a balanced work-life integration while contributing to significant public sector initiatives.
Contact Details:
SR2 | Socially Responsible Recruitment | Certified B Corporation™ Recruitment Team
