Senior Java Software Engineer

1 week ago


London Area, United Kingdom Sentinel Full time

Senior Developer – London 2 days a week/3 days remote | Software EngineeringA growing tech organisation is looking for a Senior Developer to join its Software Engineering team in London. This is a great opportunity for a hands-on technologist who enjoys solving complex problems, working on large-scale enterprise systems, and delivering high-quality software solutions.In this role, you’ll contribute to technical design, end-to-end development, and delivery of enhancements across a suite of core enterprise products. You’ll work closely with architects, project managers, and cross-functional teams, while also mentoring junior developers and supporting continuous improvement initiatives.Key ResponsibilitiesBefore DevelopmentUnderstand customer, business, and internal R&D requirementsAnalyse existing system functionality and identify design gapsTake part in requirements and design discussions with architects and analystsDevelopment & TestingDesign and build enhancements and custom modules across a broad enterprise product stackDevelop new product features for inclusion in the wider platformConduct code reviews, write unit tests, and ensure adherence to development standardsWork collaboratively within Agile teams, contributing to sprint planning and estimationsSupport bug fixing, performance optimisation, and integration testingRelease & DeploymentProvide build and release documentation to DevOps and QA teamsSupport smooth deployment cycles and quality assurance processesCollaboration & ReportingReport progress, risks, and issues to the Software Engineering ManagerMentor junior developers and support technical troubleshootingContribute to technical documentation and best-practice guidelinesRequirementsExperienceStrong track record in Java-based software design and developmentPrevious experience in senior or technical leadership rolesBackground in high-transaction or large-scale enterprise systems (telecoms/billing experience advantageous)Technical SkillsEssentialJava, Spring Boot, J2EEREST APIs, Microservices, Kubernetes/OpenShiftRDBMS, SQL, PL/SQLAngular, JavaScript, Bootstrap, HTML5, CSS3Experience with application servers (e.g., JBoss, Oracle AS)Git, Maven, Jenkins, debugging toolsStrong understanding of SDLC and Agile methodologiesDesirableJBoss Fuse/Apache Camel, DROOLS, BI platformsExperience with C/Pro*C on UNIXKnowledge of BSS/OSS, Mediation, Billing, or Charging systemsFamiliarity with Cloud-native and DevOps pipelines



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