Senior Java Software Engineer

Haley Bridge; Greater London; On-site; GBP 90,000 - 130,000; Full time

Job summary

Haley Bridge is recruiting a Senior Java Developer to join a technology joint venture delivering high-performance systems across banking and financial services. You will work in Order Management Systems close to the trading lifecycle, where code quality and speed are the core requirements.

You'll own complex Java systems end-to-end, collaborating with Front Office traders and senior technical peers to shape architecture and drive performance in a fast-paced environment.

Qualifications

• Exceptional, proven Java skills with hands-on delivery.
• Experience in Financial Services, ideally within Order Management Systems.
• Ability to engage with Front Office stakeholders and traders.
• Strong emphasis on system performance and low-latency design.

Responsibilities

• Own complex Java systems end-to-end.
• Collaborate with Front Office traders and subject matter experts to translate requirements into high-performance solutions.
• Defend architectural and engineering decisions and drive code quality across the team.

Skills

Java expertise

Financial services

Front Office

Low latency

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.