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Principal Backend Engineer - Java

Principal Backend Engineer - Java role in London, UK.
Capco
Hybrid
On-Site
United Kingdom
Undisclosed salary
Job Description

Capco is seeking a Principal Backend Engineer - Java to join their growing Engineering team in London. This is a permanent, hybrid role where the engineer will contribute to high-impact, client-facing projects that shape the future of financial services. The engineer will solve complex problems, work with cloud-native technologies, and collaborate in agile teams.

As a Principal Backend Engineer at Capco, the individual will have the opportunity to work across different domains within FS & Energy. They will also have access to industry-leading training and the opportunity to grow their skills across multiple platforms.

What this role involves:

  • Building and delivering scalable backend services using Java (11, 17+)
  • Designing and implementing APIs and microservices for enterprise systems
  • Working across cloud platforms, particularly AWS, using best practice deployment techniques
  • Contributing to architecture discussions and solution design
  • Developing robust test coverage including unit, integration, and performance testing
  • Collaborating in agile teams alongside clients, product managers, and other engineers

Requirements:

  • Expertise in Java 11, 17 and above
  • Proficiency with the Spring Boot framework
  • Deep understanding of deploying enterprise level software into any public cloud, preferably AWS
  • Experience implementing microservices, event-driven, CQRS and cloud-native architectures
  • Strong understanding of CI/CD pipelines, particularly within the AWS ecosystem
  • Proficiency in both SQL and NoSQL databases
  • Experience with Kafka
  • Ability to write various types of tests including unit, component, integration, end-to-end, and performance tests
  • Core understanding of Java streaming and AWS integration
  • Experience with CloudFormation or similar tools for infrastructure management
  • Experience with designing large-scale systems
  • Ability to troubleshoot distributed systems

What Capco offers:

  • Discretionary bonus
  • Competitive pension
  • Health insurance
  • Life insurance and critical illness cover
  • Easy access to CareFirst, Unmind, Aviva consultations, and in-house first aiders
  • Maternity, adoption, shared parental leave, plus paid leave for sickness, pregnancy loss, fertility treatment, menopause, and bereavement
  • 8 complimentary backup care sessions for emergency childcare or elder care
  • 5 weeks of annual leave with the option to buy or sell holiday days based on your needs
  • Minimum 40 Hours of Training Annually
  • Business Coach assigned from Day One
  • Convenient online GP services
  • Gympass (Wellhub), travel insurance, Tastecard, season ticket loans, Cycle to Work, and dental insurance
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Capco

Capco is a global management and technology consultancy firm focusing on the financial services and energy sectors. With nearly two decades of experience, Capco combines innovative thinking and industry knowledge to deliver business consulting, digital transformation, and technology solutions. The firm assists clients in reducing costs, managing risks, navigating regulatory changes, and increasing revenues. Capco operates with a collaborative approach, providing services from strategic planning and business case development to process mapping and project implementation. The company values innovation, client collaboration, and a commitment to delivering effective solutions.

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