Java Full Stack Developer
16 days ago
London
Java Full Stack Developer Location: London - Hybrid – 3 days per week onsite Start Date: ASAP Contract Rate: TBC, likely in the region of £500 per day inside IR35 Duration: 6 months initially Role Overview Our client is seeking a Senior Java Full Stack Developer to help design, build, and support complex Java/Python applications within a distributed, microservices‑driven environment. You’ll work across global teams, contribute to an AI‑focused engineering roadmap, and provide critical L3 production support to ensure stability and performance. Key Responsibilities • Develop and maintain Java & Python applications, microservices, and distributed systems., • Work with global product, UX, and engineering teams to deliver high‑quality solutions., • Contribute across the full SDLC, ensuring scalable, secure, test‑driven delivery., • Support L3 production incident resolution, root‑cause analysis, and preventive fixes., • Perform code reviews, enforce best practices, and mentor junior engineers., • Lead development tasks and uphold high engineering standards. Skills & Experience Essential: • 10+ years' backend engineering experience., • Strong Java, Python, microservices, REST APIs, distributed systems., • RDBMS (Oracle/SQL Server/Postgres), CI/CD, Docker, Kubernetes., • JVM tuning, performance optimisation, algorithms & data structures., • L3 production support experience., • Experience with LLMs, LangChain/LangGraph, and production‑ready AI engineering. Desirable: • Mentoring/technical leadership., • Financial services experience., • Spring Boot, Kafka, Redis, in‑memory caching., • BDD tools (Cucumber/JBehave/Karate)., • Agile/Scrum understanding. If you have the relevant skills and experience, please do apply promptly to be considered