Junior C# Engineer – Front Office Platform

Junior C# Engineer – Front Office Platform (London)

We’re working with a high-performing investment firm building and evolving a core platform used directly by traders and portfolio managers across the business.

This isn’t a typical junior backend role. It’s a position that gives you immediate exposure to front office users, with a clear pathway into more commercial or trading-facing roles over time.

Why this role stands out

• Direct front office exposure from day one
• You’ll be working on systems used daily by traders and PMs, not internal tooling that sits in the background
• Clear progression beyond pure engineering
• This team has a proven track record of people moving into more commercial and trading-facing roles over time
• High-impact work early in your career
• You’ll see how systems, data, and tooling directly influence decision-making and outcomes
• Steeper learning curve than most junior roles
• Small team, strong engineers, and close interaction with end users

What you’ll be doing

• Building and maintaining backend systems that support trading and research workflows
• Working closely with traders and PMs to understand requirements and deliver solutions
• Contributing to a centralised platform used across multiple teams
• Supporting and improving existing systems, including troubleshooting and user interaction
• Gradually taking on more ownership as your understanding of the platform and domain grows

Tech environment

• C# / .NET (core focus)
• Strong emphasis on computer science fundamentals (algorithms, data structures, OOP)

What they’re looking for

• 1–2 years commercial experience with C# / .NET
• Strong academic background in Computer Science (or closely related discipline)
• Solid grounding in core engineering fundamentals
• Curious, proactive, and comfortable working in a fast-paced environment
• Interested in understanding how technology is used in real-world decision making

Important to note

This role includes a meaningful support component initially, working closely with users, troubleshooting issues, and understanding how the platform is used day-to-day.

It’s best suited to someone who values:

• Front office exposure
• Learning how systems are used in practice
• A longer-term pathway into more commercial or trading-aligned roles

Location

London (office-based) - 4 days per week