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Java Developer - Low Latency - FIX Experience

Square One Resources • TRAFFIC • England, Not Specified, United Kingdom • 7h ago

Job Title: Java Developer - Low Latency - FIX Experience

Location: London - 3 days per week onsite

Salary/Rate: Up to £575 per day inside IR35

Start Date: 17/11/2025

Job Type: Contract Role - 12 Months

Company Introduction

We have an exciting opportunity now available with one of our sector-leading financial services clients! They are currently looking for a skilled Java Developer to join their team for a twelve-month contract.

Job Responsibilities/Objectives

This is a high profile role working on the eFX Algo team. The team develops the pricing, hedging and low latency order and price distribution team systems for the eFX desk. The team consists of Java and C# developers, developing server-side and UI components respectively. This role is specifically a Java role, encompassing low latency market connectivity work and associated services around that.

It is a hands on development role. As a team member, you would also be expected to contribute towards estimation and the ability to work with functions such as Business Analysts, Project Managers and successfully engage with QA both to plan tests and also execute them is crucial.

Knowledge of FIX is required, knowledge of FX or similar low latency trading systems is desired. A high technical development ability in Java is also required. Familiarity with at least one delivery technique such as Agile, SCRUM, Kanban and similar would be a strong advantage. The position will also require a production stability-focused ethos and the ability to work to that goal with multiple teams, including liaising with support teams on both the infrastructure and the operational side.

Work within the eFX Algo team by taking requirements and developing user analytics and solutions to aid pricing/trading algorithms and ultimately P&L.
Prototype solutions in a fast, agile manner with numerous demands from both Front Office and IT teams.
Be comfortable performing analysis in a high frequency low latency environment.
Participate in the development of all aspects of product delivery including design documents, functional specifications, unit testing and component build.
Provide technical assistance and 3rd line support to internal Production Support teams.
Participation on software releases which may be performed out of hours/weekends.
Participate in sprint planning and estimation and provide regular status updates to project managers.

Required Skills/Experience

The ideal candidate will have the following:

Clear communication & systematic reasoning.
Deep experience with Java working in a similar environment.
FIX and other market protocols
Have front office knowledge of the FX business or quantitative finance.
UNIX OS knowledge.
Knowledge about software delivery process and methodologies.

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.

Disclaimer

Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies. Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.

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