Java Developer AI Claude - FinTech

Overview

In this role you will help modernise a sophisticated C++ trading system into a scalable, high-performance Java application. You’ll work closely with Front Office traders, product specialists and experienced engineers to design real-time trading technology with tangible business impact. You will have ownership over architectural decisions and contribute to shaping the future platform, while leveraging AI-assisted tools like Claude to boost productivity. This is a hands-on, growth-focused role in a scaling FinTech with a collaborative culture.

Pay / Benefits

• salary up to 120k + Bonus
• 25 days holiday
• Bupa healthcare
• generous pension contribution
• continuous career development opportunities
• social team atmosphere with events

Responsibilities

• backend Java development for real-time trading systems
• modernise C++ trading system into scalable Java applications
• design and build robust, secure, high-performance trading technology
• collaborate with Front Office trading teams, product specialists and engineers
• influence architecture and make technical decisions
• work with AI-assisted development tools to accelerate delivery

Key requirements

• strong backend, multithreaded Java development experience
• strong knowledge of financial markets and experience with trading systems
• good understanding of real-time system development and latency
• comfortable using AI tools such as Claude
• collaborative and pragmatic with client-facing communication skills
• curious with advanced critical thinking and problem-solving
• understanding of C++ beneficial but not essential
• minimum 2.1 BSc in Computer Science or similar from a top-tier/Russell Group university
• A-levels with high grades

• collaborative
• pragmatic
• client-facing communication
• Java backend development
• multithreading
• real-time systems