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# Principal Java Developer - VP | Java, Spring Boot, AWS

- **Company:** Lorien
- **Location:** London, United Kingdom (Remote available)
- **Experience:** Expert
- **Salary:** £130,000 - £131,000
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Agile Methodology, Amazon Web Services, C++ (Programming Language), Cloud Computing, Java Platform Enterprise Edition (J2EE), Hazelcast, Python (Programming Language), Redis, Distributed Caching, Software Engineering, SQL Databases, Spring-boot, AI Coding Agents, Build Management, Containerization, Kubernetes, Low Latency, Functional Programming, Restful APIs, Docker, Microservices
- **Published:** November 11, 2026
- **Apply:** https://www.reed.co.uk/jobs/principal-java-developer-vp--java-spring-boot-aws/57557416

## About the Role

* Extensive enterprise Java development, with recent hands-on production coding
 * Strong Spring Boot and Spring ecosystem expertise
 * Hands-on AWS experience, ideally gained on a cloud migration or modernisation programme
 * Containerisation and cloud-native application design
 * Financial services experience, ideally trading, front office or risk systems
 * Solid understanding of functional programming concepts
 * Strong architectural knowledge, and comfort working independently in complex environments with limited documentation

Desirable experience

 * Scala (preferred), C++ or Python
 * Redis, Hazelcast or other distributed caching
 * Low-latency systems, idempotency and reliable processing
 * Day-to-day use of AI coding assistants, * Agile Methodology
 * Amazon Web Services (AWS)
 * Communication Skills
 * Docker Containerization
 * Java Programming
 * Kubernetes
 * Microservices Development
 * RESTful API Development
 * Spring Boot
 * SQL Databases

## Description

This is a senior engineering role for someone who still writes code every day. You'll work closely with the platform architect, set technical direction, and guide a team of experienced engineers and contractors., * Investigate and resolve complex technical issues across a large trading platform, including P&L and trade services

 * Improve platform stability, reliability, performance and latency
 * Design and build new services using modern Java (Java 25) and Spring Boot
 * Lead the migration of existing applications to AWS, replacing legacy frameworks with cloud-native solutions
 * Support the migration of the caching layer to Redis
 * Use AI-assisted development tools (e.g. Amazon Kiro) to analyse legacy code and accelerate refactoring
 * Provide technical leadership and mentoring while staying hands-on