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

Principal Java Developer - VP | Java, Spring Boot, AWS | Investment Banking Central London - Hybrid (Tuesday, Wednesday and Thursday in the office) c£130,000 + bonus | Permanent A global investment bank is looking for a hands-on Principal Java Developer to take technical ownership of a business-critical trading technology platform.

You'll stabilise it, modernise it and lead its migration to AWS. 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.

The role 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 (eg Amazon Kiro) to analyse Legacy code and accelerate refactoring Provide technical leadership and mentoring while staying hands-on Essential experience 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 What's on offer VP-level Principal role with real influence over technical direction Large-scale AWS modernisation programme Modern stack for new development: Java 25, Spring Boot, AWS, Redis, AI-assisted engineering Competitive base salary of c£130K plus bonus Consistent hybrid pattern: Tuesday to Thursday in central London, Monday and Friday remote Core hours 8:30-17:00 Apply Apply now with a concise CV highlighting your Java, Spring Boot and AWS experience.

Shortlisted candidates will receive full client details and a detailed briefing. Lorien is acting as an employment agency in relation to this vacancy Guidant, Carbon6...

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