Lead Software engineer

ARC IT Recruitment; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

ARC IT Recruitment partners with a renowned trading and investment firm in London to recruit a Senior Software Engineer (C#/.NET). The role leads a small team, shapes architecture, and maintains hands-on technical involvement in complex distributed systems integral to trading and compliance.

The ideal candidate has 8+ years in C#/.NET, proven leadership, and strong communication with both quant and business stakeholders. The position is based in London with four days in the new West End office.

Qualifications

• 8+ years hands-on experience in C#/.NET with leading or mentoring engineers.

Responsibilities

• Lead a small team of .NET developers building distributed systems.
• Own architecture decisions and drive delivery while staying hands-on.
• Collaborate with stakeholders across trading, compliance and operations.

Skills

C#/.NET

Distributed systems

Leadership/mentoring

Stakeholder communication

Thrives in fast-paced environment

Education

Degree in computer science

Tools

Docker

AWS

Bloomberg APIs

Job description

Senior Software Engineer (C#/.NET) - London

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.

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.

If you are interested in a growth role, working with truly exceptional organisation who offer both unbeatable career and financial gains, please do get in touch.