Java Developer – Front Office Trading Systems

London - UK

Monthly Salary: Not Disclosed

Posted on: Yesterday

Vacancies: 1 Vacancy

Job Summary

Java Developer Front Office / Trading Systems

Join MARGO in the UK (London) Perm & Contracting Opportunity*

MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry.

We specialise in complex software engineering environments where performance robustness and scalability are critical: low latency systems real-time data processing distributed architectures and high-volume flows.

Joining MARGO means working in demanding Front Office and Risk IT environments while benefiting from a human-sized structure close follow-up and tailor-made training paths.

Business Context

You will join the Front Office / Trading IT environment of one of our tier-1 investment banking partners.

The teams design and maintain mission-critical Java systems supporting electronic trading activities across multiple asset classes (e.g. Equities Fixed Income Commodities FX Derivatives).

The environment is characterised by:

Real-time and event-driven architectures

High performance and low-latency constraints

Close interaction with trading quantitative and risk teams

Short delivery cycles and high engineering standards

Role Overview

We are looking for an experienced Java Developer to work on real-time trading and risk systems.

The role is primarily technical focused on software engineering excellence rather than business analysis.

Candidates are expected to have prior exposure to Front Office Trading or Risk environments regardless of the underlying asset class.

Key Responsibilities

Design & Development

Design develop and maintain high-performance Java applications

Work on real-time data processing (market data pricing orders analytics)

Implement multithreading and concurrency patterns adapted to performance-critical systems

Participate in system design architecture discussions and technical specifications

Continuously optimise performance (latency throughput memory GC behaviour)

Engineering & Delivery

Contribute to the full software lifecycle: design development testing and release

Produce clean maintainable and well-tested code

Participate in sprint planning estimations and technical reviews

Collaborate closely with developers quant and infrastructure teams

Production & Support

Provide 3rd line support on production systems when required

Participate in production releases (including occasional out-of-hours interventions)

Contribute to system stability monitoring and incident prevention

Technical Environment

Core Technologies

Java (expert level)

- Multithreading & concurrency

- Performance optimisation & low latency techniques

- Garbage Collection awareness

Linux / UNIX environments

Distributed systems and messaging architectures

Performance monitoring and profiling tools

Valued Technical Exposure

Event-driven or real-time systems

Messaging middleware (Kafka Solace or equivalent)

FIX or other market connectivity protocols

Networking fundamentals (TCP/IP multicast)

Required Experience & Skills

Essential

Strong experience as a Java Developer in performance-critical environments

Proven background in low-latency or high-throughput systems

Solid understanding of concurrency threading and memory management

Experience working in Front Office Trading or Risk IT environments

Comfortable working in Linux production environments

Clear communication and structured problem-solving skills

Valued (but not restrictive)

Exposure to one or more asset classes (Equities Fixed Income Commodities FX Derivatives)

Experience in trading pricing risk or market data systems

Why Join MARGO

Access to multi-asset Front Office environments

Highly technical and challenging engineering assignments

Strong emphasis on skill development and long-term career progression

Human-sized consultancy with close support and high-quality missions

Please note - We do not offer visa sponsorship for this position.

Interested Motivated Apply on our website or at emailprotected

We may use artificial intelligence (AI) tools to support parts of the hiring process such as reviewing applications analyzing resumes or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed please contact us.

Required Experience:

Java Developer Front Office / Trading SystemsJoin MARGO in the UK (London) Perm & Contracting Opportunity*MARGO is a tech-native consultancy delivering high value-added IT expertise to the financial services industry. We specialise in complex software engineering environments where performance rob...