Senior Java Developer - Outside IR35

We have partnered with a leader in the financial services sector who is looking for experienced Senior Java Engineers to join their Settlements team
.

This is a hands-on engineering role focused on developing and enhancing software supporting complex post-trade and settlement workflows
. you'll work as part of an experienced engineering team, contributing to both new and existing systems within a fast-moving financial markets environment.

• Develop and maintain Server Side Java/JVM applications supporting settlement and post-trade processes.
• Build robust, scalable services using Spring and Spring Boot
  .
• Work across greenfield and brownfield development projects.
• Collaborate with engineers and business stakeholders to understand requirements and deliver effective solutions.
• Contribute to technical design, development, testing and production delivery.
• Work with Kubernetes, event-driven architecture and cloud infrastructure
  , alongside primarily on-premise environments.
• Troubleshoot complex technical issues and take ownership through to resolution.
• Work comfortably with ambiguity, incomplete information and changing requirements.

• Experience working within financial services, trading or similarly complex transactional environments
  .
• Comfortable working hands-on with existing and new systems.
• Post-trade, settlements or financial markets experience.
• Experience with equities settlement
  ;
  Fixed Income is a plus.
• Kubernetes and event-driven architecture.
• Experience working with large and complex data sets.
• Familiarity with AI coding agents such as Claude Code, Windsurf or Devin
  .

The team works on complex settlement and digital asset solutions, including post-trade settlement workflows and trading connectivity
.

• Equities settlement;
  Fixed Income experience advantageous.
• ATS connectivity and FIX protocols/FIX engines
  .
• EVM experience preferred, with Canton a strong advantage and Solana also relevant.
• Event-driven architectures and distributed systems.

You'll be a proactive, collaborative engineer who enjoys solving complex problems and working in a fast-moving environment. you'll be comfortable taking ownership, communicating technical ideas clearly and working effectively when requirements aren't always fully defined.

This role would suit a Senior Java Engineer who wants to work on technically complex financial systems
, with strong Spring/Spring Boot development skills and an interest in settlements and post-trade technology.