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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java & API Security Senior Engineer - **Company:** J&C Associates - **Location:** London, UK - **Experience:** Expert - **Salary:** £5,603.0 - £20,000.0 - **Contract:** Temporary contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Relational Databases, High-Level Architecture, Java Virtual Machine (JVM), Object-Oriented Software Development, Service-Oriented Architecture, Software Systems, Software Security, Kotlin, Event Driven Architecture, Kubernetes, Microservices - **Published:** July 24, 2026 - **Apply:** https://www1.jobdiva.co.uk/portal/?a=34jdnwd4ls8uthmwrzi4o3humpp74fc3d5cx3iu8mtcrkknzjqz9d2mvwwdvi9j7.co.ukpid=0/jobs/11238437#/jobs/11238437 ## About the Role * Experience implementing event-based solutions is desirable * Experience securing APIs at scalewould be beneficial * Experience using more than one approach to API security * Deep knowledge of distributed service-oriented architecture, relational databases, micro-services * Proficiency with one or more object-oriented languages - must have Java * A strong grasp of functional, non-blocking, asynchronous code or coroutines * Demonstrably polyglot; bonus if this is in JVM languages such as Kotlin or Scala * Experience building high performance, highly available and scalable systems * Experience building complex software systems that have been successfully adopted by customers over extended time periods * Ability to deliver short term results while investing in long term strategic solutions * Ability to work at all levels of abstraction, from high level architecture, to design, down to low level details in specialist subject area(s). * Good written and oral communications skills are essential * Proven ability to guide and mentor all members of a team * Must be able to apply SOLID and other architectural principles to designs and code * Must be able to articulate a clear understanding of event-driven architecture patterns ## Description * Understanding and implementing all aspects of SSDLC. * Contributing to API authentication and authorization * Reviewing solutions for alignment with Digital Services goals and objectives * Remaining cognizant of contemporary architectural and engineering approaches * Advocating for and meeting high professional standards of development * Approaching technical challenges with an open and collaborative mindset * Supporting initiatives to improve client developer experiences and their efficiency * Liaising with other lines of business and mainframe to deliver on common priorities * Being responsible for the lifecycle of work on our Simplification Initiatives programme * Developing solutions to facilitate the migration of our API estate to global Kubernetes strategic cloud platforms ## Related Videos - [Microservices: how to get started with Spring Boot and Kubernetes](https://www.wearedevelopers.com/videos/242-microservices-how-to-get-started-with-spring-boot-and-kubernetes) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Understanding Kubernetes in a visual way](https://www.wearedevelopers.com/videos/100085-understanding-kubernetes-in-a-visual-way) - [An Opinionated Guide to Bulletproof APIs](https://www.wearedevelopers.com/videos/100182-an-opinionated-guide-to-bulletproof-apis) - [Why Kotlin is the better Java and how you can start using it](https://www.wearedevelopers.com/videos/661-why-kotlin-is-the-better-java-and-how-you-can-start-using-it) - [Lessons learned from observing a billion API requests](https://www.wearedevelopers.com/videos/1574-lessons-learned-from-observing-a-billion-api-requests) ## Related Articles - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Events like RSAC Get You CISOs. Developers Decide What Actually Gets Deployed.](https://www.wearedevelopers.com/magazine/693-events-like-rsac-get-you-cisos-developers-decide-what-actually-gets-deployed) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)