Full Stack Software Engineer

Full Stack Software Engineer — Node.js · React · JavaScript - Miller Maxwell | London — Hybrid (2 days in office) | Permanent

Miller Maxwell is working with a well-established electronic brokerage that is rebuilding its core trading platform from the ground up. This is not a greenfield startup product — it is a system that moves billions of pounds of daily flow, used in real time by front-office traders across three global offices. The engineering standards reflect that.

The Full Stack Software Engineer role:

You will own both ends of the stack. On the front end, you will be building React interfaces that surface live market data cleanly and quickly under genuine load — where a sluggish render has real consequences. On the back end, you will be designing and running the Node.js services and APIs that feed those interfaces, processing high-volume, real-time data at pace.

What the Full Stack Software Engineer will be doing:

Building low-latency React UIs for real-time equities data — performance and render speed are non-negotiable

Designing and running the Node.js services and APIs behind those interfaces, handling high-volume market data reliably

Building and maintaining JavaScript libraries purpose-built for demanding financial data display

Translating complex trading workflows into clean, intuitive end-to-end solutions with the desk and engineering teams

Taking ownership of architecture and code quality across the full stack — with real influence over technical direction

Full Stack Software Engineer requirements:

5 years of commercial full-stack experience with a strong JavaScript foundation across front and back end

React expertise — clean component architecture and the judgement to know when not to reach for the framework

Solid, production-grade Node.js — building and running real backend services, not just tooling or scripts

A track record delivering high-volume applications under real-world performance constraints

Strong communication skills across engineering, product, and trading desk stakeholders

Financial services or real-time data background — not essential, but a genuine differentiator

What is on offer

Bonus up to 25%

Private medical insurance

Life insurance

Pension scheme

25 days holiday

Structured career development

Gym membership included

2 days in office per week

If you have full-stack engineering experience in a high-performance or data-intensive environment and want to work on software that genuinely matters to the people using it, Miller Maxwell would like to hear from you.