Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35 at Auro Recruitment Group, London Area, £550 per day

Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35

We’re working with a cross-asset trading business that’s firmly tech-first, where engineering sits at the heart of how the firm operates. They’re looking for a Full Stack Developer to join on a contract basis and help build the applications their traders and teams rely on every day.

On the technical side, this is a front end-led role, with roughly 60% of your time in React, 30% across .NET, C# and API development, and the remaining 10% in SQL Server. Experience with the modern React ecosystem will set you apart, particularly the TanStack suite, which has become the industry standard for data access and routing. Just as important, you’ll bring a background in regulated environments. Finance can be a tricky space to step into cold, so a solid grasp of the vocabulary and an understanding of models and funds work will help you hit the ground running.

The culture is a big part of the appeal. This is a genuinely friendly, collaborative team that takes its technology seriously, and everyone is equipped with the latest AI development tooling, so if you’re already comfortable working that way you’ll fit right in. You’ll report into senior technology leadership, giving you real visibility and a voice in how things are built, and the business is investing heavily in AI more broadly, so it’s an exciting time to be part of the engineering story.

📍 1 to 2 days per week in London office

💷 Up to £550 p/day | Outside IR35

💼 Contract role

✅ Must have worked in regulated environments (Finance, Funds & Models Exposure)

The core stack includes:

⚛️ React (c. 60% of your time)

🧭 TanStack Suite (Query, Router, etc.)

🔷 .NET & C# (c. 30% alongside API work)

🔌 API Design & Development

🗄️ Microsoft SQL Server (c. 10% of your time)

🤖 AI-Enabled Development (Cursor & Claude)

📈 Cross Asset Trading Applications

If interested, please apply or ping your CV to jack@aurogroup.io

Full Stack Engineer | Cross Asset Trading | React, C#, .NET, SQL Server | London | Hybrid 1-2 days onsite | Up to £550 p/day | Outside IR35