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# Core Java Engineer - Lorien Impellam

- **Company:** Lorien
- **Location:** London, United Kingdom
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Amazon Web Services, Continuous Integration, DevOps, Mobile Application Software, Software Engineering, Spring Cloud, Microservices
- **Published:** October 14, 2026
- **Apply:** https://www.reed.co.uk/jobs/core-java-engineer-lorien-impellam/57455708

## About the Role

* 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

## Description

* 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