Core Java Engineer - Lorien Impellam

Lorien Impellam · London, England ·

Last confirmed by our partners on 16 Oct 2026.

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Key Responsibilities

  • Design, develop and maintain Java-based microservices
  • Build and enhance APIs supporting cards, payments and digital banking journeys
  • Develop cloud-native applications within AWS
  • Work across integrations with TSYS, core banking systems and third-party payment providers
  • Support delivery of major mobile application releases
  • Contribute to engineering best practices, CI/CD and automation
  • Collaborate with cross-functional teams to improve customer experience and platform performance


Essential Skills & Experience

  • Strong commercial experience with Java
  • Proven experience building microservices architectures
  • Strong API development and integration experience
  • Experience working within AWS cloud environments
  • Background in financial services, retail banking, payments or cards
  • Experience delivering customer-facing digital products
  • Knowledge of modern software engineering practices, testing and DevOps


Desirable Experience

  • Payments, cards or acquiring platforms
  • Click to Pay implementations
  • Apple Pay integrations
  • TSYS exposure
  • Core banking platform integration experience
  • Mobile banking or digital channel delivery experience

Guidant, Carbon60, Lorien & SRG - The Vertage Group Portfolio are acting as an Employment Business in relation to this vacancy.

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