Senior Kotlin/Java Engineer - Equities Prime Brokerage

We're seeking a Senior Software Engineer to join a major transformation programme within Prime Finance Equities, helping modernise a suite of front-to-back trading and post-trade platforms. This is an opportunity to work on highly distributed, event-driven systems that underpin a global equities business, while influencing the future architecture of a strategic technology platform.

You'll join a team building cloud-native solutions using modern engineering practices, working closely with both technology and business stakeholders across the equities trading landscape.

What You'll Be Doing

• Designing and developing scalable backend services for trading and post-trade platforms
• Building event-driven applications and messaging-based integrations
• Developing high-quality software using Kotlin and Java within JVM ecosystems
• Influencing architecture and contributing to key technology decisions
• Applying Test-Driven Development (TDD) principles to ensure software quality
• Implementing resilient event processing, replay and recovery capabilities
• Driving frequent deployments through modern CI/CD pipelines
• Troubleshooting and resolving complex production and performance challenges
• Collaborating closely with business users, traders and technology teams
• Contributing to strategic platform transformation and future market expansion initiatives

What We're Looking For

• Kotlin and Java experience from within financial services environment
• Deep understanding of messaging patterns, resiliency, ordering, replay and failure handling
• Proven experience applying TDD and owning software quality end-to-end
• Experience working within Agile environments using CI/CD and trunk-based development
• Strong capital markets knowledge, particularly across trade lifecycle and post-trade processes
• Understanding of trade booking, position management, settlement, accounting and cashflows
• Excellent system design and architecture skills
• Kafka, Solace or TIBCO EMS
• SQL Server, MongoDB and object storage technologies such as S3
• Kubernetes and OpenShift
• OpenTelemetry, ELK Stack and Grafana
• HashiCorp Vault and CyberArk
• Prime Brokerage, Synthetic Swaps or Cash Equities experience
• Regulatory reporting knowledge including EMIR, MiFID or 871(m)
• Integration with risk, valuation and reporting platforms
• Experience using AI-assisted development tools such as GitHub Copilot or Devin
• Exposure to React or Angular environments

Why Join?

• Work on critical systems supporting a global equities business
• Influence the design of modern cloud-native architectures
• Solve complex engineering challenges at scale
• Partner directly with business stakeholders and domain experts
• Be part of a strategic modernisation programme with significant visibility and impact
• Collaborate with highly talented engineers within a fast-paced capital markets environment

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