Java Developer - Trading Systems

Client Server Ltd.; Newcastle upon Tyne; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

25 days holiday

Social team atmosphere

Job summary

Client Server Ltd. in Newcastle expects a Senior Java Developer to modernise a legacy C++ trading system into a Java-based solution.

You will work onsite in Central Newcastle, Monday to Friday, collaborating with Front Office teams and other engineers to deliver robust, real-time trading systems using Java and Claude. The role emphasizes backend, multithreaded development, strong knowledge of financial markets, latency considerations, and client-facing communication.

Qualifications

• Strong backend, multithreaded Java development experience.
• Knowledge of financial markets and trading systems.
• Understanding of real-time system development and latency.
• Able to work with Claude and AI tools.
• Collaborative, client-facing communication skills.
• Curious with advanced problem solving skills.
• C++ knowledge would be beneficial but not essential.
• 2.1 BSc in Computer Science from a top-tier university with A-levels.

Responsibilities

• Transform a legacy C++ trading system into a modern Java-based application.
• Collaborate with Front Office trading teams and other engineers to deliver real-time trading systems.
• Work on backend, multithreaded Java development in finance environments.
• Leverage Claude AI tools in development and problem solving.

Skills

Java

Backend development

Multithreaded programming

Real-time / low-latency systems

Financial markets / trading systems

Claude AI tools

Client-facing communication

Problem solving / curiosity

C++ knowledge

Education

BSc in Computer Science (2.1)

Tools

Claude AI

Job description

Newcastle upon Tyne, Tyne and Wear | £90k - £120k per year

Java Developer / Software Engineer Newcastle onsite to £120k

Do you have expertise with backend software development within finance / trading environments?

You could be progressing your career in a senior, hands-on Java Developer role at a growing professional services company.

As a Java Developer you'll play a key role in a new client engagement to transform a highly complex C++ legacy trading system into a modern Java based application. You'll collaborate with Front Office trading teams as well as other highly skilled software engineers and product teams to deliver robust, secure, real-time trading systems using Java and Claude.

Location:

You'll join the team in Central Newcastle offices on a fulltime basis (Monday to Friday).

About you:

• You have strong backend, multithreaded Java development experience
• You have a strong knowledge of financial markets and have previous experience of working on trading systems
• You have a good understanding of real-time system development and latency
• You're comfortable using AI tools such as Claude
• You're collaborative and pragmatic with client facing communication skills
• You're naturally curious and have advanced critical thinking and problem solving skills
• An understanding of C++ would be of benefit but it's not essential
• You have achieved a minimum 2.1 BSc in Computer Science or similar technical discipline from a top tier / Russel Group university, backed by A's at A-level

What's in it for you?

Alongside a highly competitive package, you'll gain the opportunity to work on technically demanding systems, collaborate with exceptional engineers, and play a meaningful role in the growth of a business that is still small enough for your contributions to have a visible impact.

• Salary to £120k + Bonus
• 25 days holiday
• Social team atmosphere with a range of events