Senior Full Stack Engineer (Java / React) | Equities Trading Technology

Shape the Future of Equity Trading Technology

We're looking for a Senior Full Stack Engineer to join a major multi-year transformation programme modernising institutional equities and prime finance platforms.

This is an opportunity to work on business-critical trading and post-trade systems used by global institutional clients, helping to build the next generation of cloud-native, event-driven platforms that process high-volume, real-time financial flows. You'll be joining a highly collaborative engineering environment where technology is central to the business strategy, working across the full stack while contributing to architecture, platform design and engineering best practices.

What You'll Be Working On

• Building and enhancing real-time equities trading and post-trade applications
• Developing modern full stack solutions using Java and React
• Designing event-driven distributed systems operating at scale
• Creating responsive, data-rich user interfaces for front office users
• Developing APIs, messaging integrations and backend services
• Contributing to architecture and technical design decisions
• Driving engineering excellence through TDD and automated testing
• Supporting CI/CD pipelines and frequent production releases
• Troubleshooting complex production issues in mission-critical environments
• Partnering closely with product, business and technology stakeholders
• Mentoring engineers and helping shape development standards across the team

What We're Looking For

• Strong software engineering experience with Java
• Commercial experience building modern frontend applications with React and/or Angular
• Strong JavaScript, TypeScript, HTML and CSS skills
• Experience building event-driven distributed systems
• Solid understanding of messaging architectures, resiliency patterns and fault tolerance
• Strong Test-Driven Development (TDD) practices
• Experience working within Agile engineering teams
• Exposure to CI/CD, trunk-based development and regular production releases
• Experience building real-time applications using WebSockets or streaming technologies
• Ability to contribute to architecture discussions and technical decision-making

Capital Markets Experience

You'll bring hands-on experience within capital markets, including knowledge of:

• Trade lifecycle management
• Position management
• Front-to-back trading workflows
• Institutional trading environments

Experience with Prime Brokerage, Synthetic Swaps or Cash Equities is particularly valuable.

Bonus Points For

• Kotlin experience, or a willingness to learn
• Kafka, Solace or TIBCO EMS
• Kubernetes and OpenShift
• SQL Server, MongoDB and S3/Object Storage
• OpenTelemetry, Grafana and ELK Stack
• HashiCorp Vault or CyberArk
• Regulatory reporting knowledge (EMIR, MiFID, 871(m))
• Integration experience with risk, valuation or reporting platforms
• Exposure to AI-assisted development tools such as GitHub Copilot or Devin

Why Join?

✅ Strategic transformation programme with significant investment

✅ Direct impact on front-office trading technology

✅ Modern engineering practices, cloud-native architecture and event-driven systems

✅ Complex technical challenges and large-scale distributed systems

✅ Opportunity to influence architecture and technical direction

✅ Work alongside experienced engineers, architects and capital markets specialists

If you're an experienced engineer who enjoys solving complex technical problems while working at the intersection of software engineering and capital markets, we'd love to hear from you.