3 of 3 Principal Java Developer Jobs in London

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer … with a finance background to come in and stabilise an existing platform. This Java-based stabilisation/rescue project is expected to last at least a year, but the successful candidate will then be involved in the replatforming project. The replatforming project will be C#, and whilst you don't need C# experience to be successful, you should be … technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need to be recent or extensive Comfortable working with legacy systems and large enterprise More ❯

Principal Java Developer – Major Financial Institution London/Hybrid | Contract | £700-£800 inside IR35 (gross umbrella rate) We’re working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on Principal role requiring an experienced engineer … with a finance background to come in and stabilise an existing platform. This Java-based stabilisation/rescue project is expected to last at least a year, but the successful candidate will then be involved in the replatforming project. The replatforming project will be C#, and whilst you don't need C# experience to be successful, you should be … technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems in the finance industry (all areas of finance considered) Strong background in Java and ideally C# Some front-end exposure in Angular - this is mandatory, but doesn't need to be recent or extensive Comfortable working with legacy systems and large enterprise More ❯

Social network you want to login/join with: Contract - Senior/Principal Java Developer, london (city of london) col-narrow-left Client: Source Technology Location: london (city of london), United Kingdom Job Category: Other - EU work permit required: Yes col-narrow-right Job Views: 3 Posted: 16.06.2025 Expiry Date: 31.07.2025 col-wide Job Description: We’re … working with a major financial institution looking to scale out its engineering function with a Principal Java Developer to lead critical systems work. This is a hands-on role within a high-performing team modernising legacy platforms, improving availability, and delivering new functionality across the estate. You’ll be working closely with infrastructure, architecture, and infosec teams …/CD improvements, REST API design, and steering collaborative technical decisions across squads. What they’re looking for: Proven experience supporting large-scale, business-critical systems Strong background in Java and ideally C# Some front end exposure (Angular ideally but other frameworks considered). Note the role is back end focused. Comfortable working with legacy systems and large enterprise More ❯