Java Software Engineer

Miller Maxwell Ltd; Greater London; On-site; GBP 120,000 - 180,000; Full time

Benefits offered by this job

High bonus 40-50%

26 days holiday

Private medical insurance

Daily food allowance

Wellness package

In-office four days a week

Job summary

Miller Maxwell Ltd in London is seeking a Java Software Engineer to build front-office trading systems in real time, collaborating with traders and quantitative researchers. This is not a maintenance role; you will own components of the core engine and deliver high-visibility projects.

The environment is fast-paced and performance-focused, with a highly competitive base salary and a bonus of 40-50%. Four days in the office are required, with comprehensive benefits including private medical

Qualifications

• 5+ years of commercial Java development experience.
• Experience with Java 17 - 21.
• A background in financial services — specifically developing trading software in a front-office, proprietary trading, or algorithmic environment
• Experience working with real-time market data in low-latency or algo-driven systems

Responsibilities

• Designing and building components for the core trading engine, used live by front-office and quant research teams
• Taking full ownership of projects across the development lifecycle — several high-visibility workstreams are starting immediately
• Identifying and delivering performance improvements to core trading products
• Working in a low-latency, real-time environment where throughput and reliability are not negotiable

Skills

Java

Tools

Java 17-21

Job description

Java Software Engineer — Low Latency · Proprietary Trading · London. Miller Maxwell is retained by one of London's most respected proprietary trading firms to find a Java Software Engineer for their core engineering team. This is not a support role or a maintenance position — you will be building the front-office trading systems the firm's traders and quant researchers depend on, in real time, every day the market is open.

The firm is well-capitalised, privately owned, and genuinely invests in its engineering talent. The codebase is modern, the problems are technically interesting, and the people around you will push you.

The Java Software Engineer position will:

You will work directly on the core trading engine — building new components, improving performance, and taking end-to-end ownership of high-visibility projects that are already in the pipeline. You will collaborate closely with front-office traders and quantitative research teams, which means your work has immediate, visible impact rather than disappearing into a backlog.

The environment is fast-paced and technically uncompromising. If you want to work on software where performance genuinely matters and the stakes are real, this is it.

• Designing and building components for the core trading engine, used live by front-office and quant research teams
• Taking full ownership of projects across the development lifecycle — several high-visibility workstreams are starting immediately
• Identifying and delivering performance improvements to core trading products
• Working in a low-latency, real-time environment where throughput and reliability are not negotiable

Java Software Engineer requirements:

• 5+ years of commercial Java development experience
• Experience with Java 17 - 21.
• A background in financial services — specifically developing trading software in a front-office, proprietary trading, or algorithmic environment
• Experience working with real-time market data in low-latency or algo-driven systems

What the client is offering:

The package here is among the strongest in the market for this type of role:

• Highly competitive base salary with a superb bonus scheme - 40-50%.
• 26 days holiday
• Private medical insurance
• Substantial daily food allowance
• Comprehensive wellness package
• Four days in office required.

This is a firm that looks after its engineers — compensation reflects that, and progression is real.