ARC IT Recruitment
Caxton Lead engineer
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Senior Software Engineer (C#/.NET) – London
Location: London (Hybrid)
Sector: Financial Services
Type: Permanent
Salary: Circa 130k + bonus + benefits
We're partnering with a phenomenally well-regarded trading and investment firm who are looking for a Senior / Lead Developer, they want someone technically sharp enough to design complex distributed systems and credible enough to lead a small team.
If you've been waiting for a role that rewards both sides of your skillset, this is it.
Please note role will be 4 days a week in their new West End offices.
The Role
You'll lead a small, focused team of.NET developers building systems that sit at the heart of the business - touching trading, compliance, and operations. You'll own architecture decisions, drive delivery, and shape how the team works. Critically, you'll stay hands-on: this firm values engineers who can still get into the detail.
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You'll have the autonomy to do things properly - best practices in testing, CI/CD, and system design aren't aspirational here, they're expected.
What You Bring
- 8+ years of strong hands-on experience in C#/.NET, with real experience leading OR mentoring engineers
- A strong portfolio of distributed systems built for production, not just proof-of-concept
- The ability to talk to a quant as comfortably as a business stakeholders
- A desire to really excel in a thriving organisation
- Degree in computer science or similar
- Some familiarity with financial market data (Bloomberg, Reuters or similar) is desirable
- A bonus if you have: exposure to the order-to-trade lifecycle, Bloomberg APIs, Docker or AWS. Although not essential.
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