Senior Software Engineer (Java Script)

Company: Hamilton Barnes
Apply for the Senior Software Engineer (Java Script)
Location: London
Job Description:

Do you want to join a global high frequency trading firm and have real ownership?

We’re looking for a sharp, product-minded engineer to help scale a fast-growing platform used across the company. You’ll work across frontend and backend systems, solve performance challenges, and play a key role in shaping the architecture of a complex, high-impact product.

You’ll thrive here if you enjoy:

Building with JavaScript/TypeScript and Node.js

Owning meaningful technical problems end-to-end

Improving large-scale, data-heavy systems

Working closely with users and seeing your impact quickly

Refactoring and optimizing systems for speed and scale

Must Haves:

5+ Years Software Engineering

Trading experience

Deep Java Script expertise

Experience refactoring existing software

Bonus points for experience with Docker, distributed systems, testing, Rust/WebAssembly, open-source projects, or an interest in finance.

#Unforutnately their is no sponsorship available for this role.

If you like solving hard engineering problems in a collaborative, fast-moving environment, we’d love to hear from you.

Posted: May 28th, 2026