Miller Maxwell Ltd
Full Stack Software Developer:
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Full Stack Software Developer — React, TypeScript, GraphQL, Node.js — London
A leading electronic trading firm is looking for a capable Full Stack Software Engineer — mid-level to senior — to join the team building their core trading platforms end-to-end. These are production systems used daily by front-office traders and research teams who expect their tools to be fast, reliable, and precise.
This is a hands-on individual contributor role. No people management, no line reports — just quality engineering on complex, real-time problems, working across the stack alongside experienced Java and Python backend engineers and the traders your software serves directly.
The firm wants someone who has built in anger in a demanding technical environment — where the users on the other side of the interface are experts with high standards and zero patience for latency or poor UX.
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Responsibilities for the Full Stack Software Developer:
- Build and maintain real-time, data-intensive UIs in React and TypeScript, consuming GraphQL APIs and handling high-frequency data streams
- Design and build Node.js services and APIs that power those interfaces, handling real-time market and research data
- Work directly with front-office traders and research teams to translate complex workflows into clean, performant, end-to-end solutions
- Collaborate closely with Java and Python backend engineers to align on data models and API contracts
- Write well-structured, maintainable code across the stack and contribute to shared engineering standards
- Take ownership of your work end to end — from scoping through to production, front end and back
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What they need from the Full Stack Software Developer:
- A degree in a STEM subject.
- At least 5 years commercial experience.
- Strong React and TypeScript.
- Solid, hands-on Node.js experience
- GraphQL experience
- Experience building systems where performance and data throughput genuinely matter
- Familiarity with Java or Python.
Core stack
React, TypeScript, GraphQL, Node.js, JavaScript (ES6+)
Compensation & benefits:
- Salary benchmarked to financial services
- Market-leading bonus
- Private medical insurance
- Life insurance
- Pension scheme
- 25 days' holiday
- Gym membership
- 3 days' office attendance required.
If you have solid hands-on experience building full stack systems in an electronic trading or similarly demanding environment, we would like to hear from you.
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