Senior Software Engineer (Java Script)

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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.

”, “datePosted”: “2026-05-13”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Hamilton Barnes “, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__430877020__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=33” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }
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 13th, 2026