Principal Backend Engineer – Java

Overview

As a Principal Backend Engineer at Capco, you will design and deliver scalable Java-based services that power enterprise financial solutions. You’ll join a collaborative engineering team working on client-facing projects across cloud-native architectures. You’ll influence architecture and drive robust testing and performance improvements in agile settings. This role offers exposure to multiple domains within FS & Energy and opportunities to grow across platforms. You’ll contribute to high-impact initiatives that shape the future of financial services.

Pay / Benefits

• Discretionary bonus
• competitive pension
• health insurance
• mental health support
• 5 weeks of annual leave
• continuous learning

Responsibilities

• Build and deliver scalable backend services using Java (11, 17+)
• Design and implement APIs and microservices for enterprise systems
• Work across cloud platforms, especially AWS, with best practice deployment techniques
• Contribute to architecture discussions and solution design
• Develop robust test coverage including unit, integration, and performance testing
• Collaborate in agile teams with clients, product managers, and other engineers

Key requirements

• Expertise in Java 11, 17 and above
• Proficiency with Spring Boot
• Deep understanding of deploying enterprise software to public cloud (preferably AWS)
• Experience implementing microservices, event-driven, CQRS and cloud-native architectures
• Strong understanding of CI/CD pipelines, particularly in AWS
• Proficiency in SQL and NoSQL databases
• Experience with Kafka
• Ability to write unit, component, integration, end-to-end, and performance tests
• Core understanding of Java streaming and AWS integration
• Experience with Infrastructure as Code (CloudFormation or similar)
• Experience designing large-scale distributed systems

• collaboration
• stakeholder management
• problem-solving
• Java 11/17+
• Spring Boot
• AWS

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