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Principal Java Engineer (Retail)

Mindera

london, england, United-Kingdom Full-time May 24, 2026
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Vacancy Description

Requirements

  • Proven experience as a Principal Java Engineer in backend-heavy environments in teams having multiple levels of engineering
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  • Strong experience in Java 17+, ideally with experience in using Spring Boot or Micronaut. Kotlin experience is a bonus. If the applicant does not have experience they must show willingness to learn Kotlin
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  • Hands-on knowledge of Kafka, event-driven architecture, enterprise integration patterns and Microservices
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  • Solid understanding of payment systems and PSP integrations, including fraud, tokenisation, and settlement flows
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  • Experience with cloud infrastructure (Azure preferred), CI/CD, and Kubernetes
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  • Working knowledge of regulatory and compliance standards (PCI DSS, SCA, PSD2)
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  • Strong communication skills and the ability to explain complex technical concepts to a range of audiences
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  • Experience working in Agile/Scrum teams with a DevOps culture and test-driven mindset <...

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