Java Full Stack Developer
CV-LibraryLondoncontractPosted: 27 March 2026
Apply NowJava 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
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