Java Developer

Role Overview

A leading FS organisation is expanding its E‑Trading and Algorithmic Execution capability and is seeking experienced server‑side Java Developers to join a cross‑asset execution technology team. The role supports low‑latency trading and execution platforms across Fixed Income, FX, and Futures, operating in a front‑office, market‑facing environment.

The successful candidate will work closely with traders, quants, and execution teams, contributing to the design, development, and optimisation of high‑performance, latency‑sensitive systems deployed in global co‑location environments.

Key Responsibilities

Design, build, and enhance low‑latency Java‑based trading and execution applications

Contribute to algorithmic execution platforms across multiple asset classes

Collaborate closely with quants and trading desks to implement and evolve execution strategies

Optimise system performance, determinism, and stability

Develop and deploy services within containerised environments

Maintain and enhance systems running on physical infrastructure in co‑location data centres

Participate in code reviews, architectural discussions, and production support as required

Required Technical Skills

Strong commercial experience with server‑side Java in low‑latency or performance‑critical environments

Demonstrable background in electronic trading or market‑facing systems

Solid understanding of low‑latency system design and optimisation

experience with:

Linux (Red Hat preferred)

Linux kernel tuning and performance optimisation

Containers (Docker, Kubernetes, or similar)

Good understanding of networking concepts relevant to trading systems

Nice to Have

Direct experience working with front‑office execution or trading desks

Exposure to algorithmic trading platforms

Understanding of market microstructure

experience working in co‑location environments (e.g. London, Frankfurt, Milan, Tokyo

Skills

• Java
• LINUX

Job Title: Java Developer

Location: London, UK

Job Type: Permanent

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as "Allegis Group"). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Notice available at https://www.allegisgroup.com/en-gb/-notices.

To access our Online Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to https://www.allegisgroup.com/en-gb/-notices.

We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your rights, please visit the "Contacting Us" section of our Online Notice at https://www.allegisgroup.com/en-gb/-notices for details on how to contact us. To protect your and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Shield or the Swiss-U.S. Shield.