Java Software Engineer (Core Java)

**Core Java Developer Boutique Investment & Trading Firm London £70,000 - £80,000 (depending on experience)**

Are you a Senior Backend Engineer who prefers solving complex problems with Core Java over just configuring frameworks?

We are partnering with a boutique investment firm in London that operates with a flat structure, empowering developers to drive innovation and take full ownership of their work. The Head of Engineering is looking for a technical peer—someone who is “switched on,” proactive, and values honest, direct communication.

The Mission:

You will develop and enhance a bespoke, microservice-based codebase used for risk and back-end operations. This isn’t just building features; it’s about engineering high-performance systems for complex data processing and large-volume calculations.

The Ideal Candidate:

The leadership team values autonomy; you won’t find much hand-holding here. They are looking for a proactive problem-solver who wants to contribute to the technical roadmap and the overall SDLC.

Major Requirements:

• Core Java Mastery: 5+ years of experience with a deep understanding of JVM internals, memory management, and multi-threading.
• SQL Expertise: Strong skills in database architecture and query optimization.
• Cloud & CI/CD: Experience with Cloud platforms (AWS/Azure/GCP) and a mastery of automation and CI/CD pipelines.
• Financial Context: Experience working in a regulated environment, preferably banking or finance.
• Testing Rigor: Demonstrable experience developing unit and integration test frameworks.

Why Apply?

This is a “mindset-first” role. If you are an ownership-driven developer who enjoys diagnosing performance bottlenecks and solving problems using the language itself (not just a framework), you will thrive here.

Location: London (City) 4 days in office / 1 remote

Industry: Investment & Trading