Senior Java Software Engineer

Haley Bridge; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Haley Bridge is recruiting a Senior Java Developer to join their technology team, building bespoke systems across banking, financial services and private capital. You will own complex Java systems close to the trading lifecycle, delivering high-performance software for Front Office and trading functions.

London-based, office-centric role that emphasizes code quality, architectural decisions, and collaboration with traders and stakeholders.

Qualifications

• Exceptional, proven Java skills and deep hands-on expertise.
• Financial Services experience, ideally within Order Management Systems.
• Outstanding academic track record.
• Strong understanding of system performance, concurrency and low-latency design.
• Comfort engaging with Front Office, traders and senior peers.
• Ability to own technical decisions and drive quality.

Responsibilities

• Take technical ownership of complex Java systems end-to-end with Front Office stakeholders.
• Deliver high-performance, mission-critical software for trading functions.
• Defend architectural and engineering decisions and drive code quality across the team.
• Collaborate with traders and SMEs to understand requirements and deliver pragmatic solutions.
• Operate in an environment where precision and speed matter.

Skills

Java expertise

Financial services

Academic excellence

Low-latency design

Front Office collaboration

Technical ownership

Communication skills

Education

Academic excellence

Job description

Exceptional Java engineering, applied where it actually matters.

My client — a fast-growing technology joint venture between a global management consulting leader and a global alternative investment fund manager — is hiring a Senior Java Developer to join their technology team, building bespoke systems across banking, financial services and private capital.

This is a rare opportunity for a genuinely exceptional Java engineer to work close to the trading lifecycle, on Order Management Systems, where code quality and performance are not secondary concerns — they are the job.

Location

London — office-based

Overview

You'll be working deep within Order Management Systems, buy side or sell side, delivering high-performance, mission-critical software for Front Office and trading functions. This is not a maintenance role — it's a chance to shape systems that are actively being built and scaled, with direct exposure to the trading lifecycle and the people who depend on it.

Responsibilities

In this role, you will take technical ownership of complex Java systems end-to‑end, working closely with Front Office stakeholders, traders and subject matter experts to understand requirements and deliver pragmatic, high-performance solutions. You'll be expected to make and defend sound architectural and engineering decisions, drive code quality across the team, and operate comfortably in an environment where precision and speed both matter.

Desired Skills

• Exceptional, proven Java skills — deep, hands‑on expertise, not familiarity
• Financial Services experience, ideally within Order Management Systems, on either buy side or sell side
• An outstanding academic track record — this client hires on raw academic ability first
• Strong understanding of system performance, concurrency and low‑latency design is desirable
• Comfort and credibility working close to the Front Office, where engineering decisions have immediate, visible impact
• The judgement to own technical decisions rather than simply implement someone else's
• Strong communication skills, confident engaging directly with traders, stakeholders and senior technical peers

This is a single, high‑calibre hire — if you're an exceptional Java engineer with genuine Capital Markets depth, this is a role built around you.