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-negotiableDesigning and running the Node.js services and APIs behind those interfaces, handling high-volume market data reliablyBuilding and maintaining JavaScript libraries purpose-built for demanding financial data displayTranslating complex trading workflows into clean, intuitive end-to-end solutions with the desk and engineering teamsTaking 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 endReact expertise — clean component architecture and the judgement to know when not to reach for the frameworkSolid, production-grade Node.js — building and running real backend services, not just tooling or scriptsA track record delivering high-volume applications under real-world performance constraintsStrong communication skills across engineering, product, and trading desk stakeholdersFinancial services or real-time data background — not essential, but a genuine differentiator What is on offer Bonus up to 25%Private medical insuranceLife insurancePension scheme25 days holidayStructured career developmentGym membership included2 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.