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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Developer - **Company:** AMS CWS - **Location:** London, UK - **Contract:** Temporary contract - **Skills:** Java (Programming Language), Agile Methodology, Databases, Data Integrity, Spring Framework, Oracle Databases, Oracle (Applications), Oracle SQL Developer, Systems Development Life Cycle, Reverse Engineering, PL-SQL, SQL Databases, Enterprise Software Applications, Spring-boot, Build Management, Data Lineage, Low Latency, Data Management, Data Pipelines, Spring Batch, Microservices - **Published:** September 14, 2026 - **Apply:** https://www.totaljobs.com/job/java-developer/ams-cws-job108043309 ## About the Role * Proven hands-on expertise in Java (Core and Enterprise) is essential * Desirable: Strong Oracle Database experience, including SQL and PL/SQL * Desirable: experience working collaboratively within complex, global financial services * Expertise across the Spring Framework (Spring Boot, Spring Batch and Spring Integration). * Ability to reverse-engineer, analyse and integrate complex, highly customized legacy enterprise applications. * Strong data management capability, including ingestion and transformation of large-scale external feeds (e.g. daily CCP clearing files or market data) * Experience documenting data lineage and metadata, while maintaining strict data integrity across downstream ledger, risk and margin systems. * Extensive experience operating within structured SDLC environments using Agile and Waterfall * Advanced proficiency in enterprise collaboration and delivery tools. * Strong communication, listening and influencing skills, with the ability to translate business requirements into technical implementation. ## Description We are looking for a Java Integration Engineer to analyse, enhance and integrate complex enterprise applications within a global financial services environment. The role will use Java, Oracle and the Spring Framework to support highly customised legacy platforms and process large-scale external data feeds. You will help protect data integrity across downstream ledger, risk and margin systems by documenting data lineage and metadata. Working across Agile and Waterfall delivery, you will translate business requirements into robust technical solutions and collaborate effectively within a highly matrixed organisation. What you'll do: * Design and build Spring Batch and Spring Integration pipelines to ingest, transform, and validate large-scale daily CCP clearing and market data feeds. * Produce comprehensive architectural specifications and interface inventories by reverse-engineering legacy code, PL/SQL packages, and database dependencies. * Establish robust data mappings, lineage tracking, and schema definitions that maintain strict ledger, risk, and margin data integrity. * Develop scalable, highly concurrent Java and Spring Boot microservices backed by optimized, low-latency Oracle SQL and PL/SQL procedures. * Coordinate with multi-disciplinary global stakeholders to deliver clear, business-to-technical functional designs and end-to-end Agile/Waterfall deployment artifacts. ## Related Videos - [Enterprise-Cloud-Native - Fast-Paced Development & Deployment in a Highly Secure Banking Environment](https://www.wearedevelopers.com/videos/671-enterprise-cloud-native-fast-paced-development-deployment-in-a-highly-secure-banking-environment) - [Swapping Low Latency Data Storage Under High Load](https://www.wearedevelopers.com/videos/746-swapping-low-latency-data-storage-under-high-load) - [Kubernetes and Microservices with Multi-Model Databases](https://www.wearedevelopers.com/videos/382-kubernetes-and-microservices-with-multi-model-databases) - [Next Level Enterprise Architecture: Modular, Flexible, Scalable, Multichannel and AI-Ready?](https://www.wearedevelopers.com/videos/1017-next-level-enterprise-architecture-modular-flexible-scalable-multichannel-and-ai-ready) - [Unleash the power of 5G in your code: transform your apps](https://www.wearedevelopers.com/videos/1567-unleash-the-power-of-5g-in-your-code-transform-your-apps) - [Fault Tolerance and Consistency at Scale: Harnessing the Power of Distributed SQL Databases](https://www.wearedevelopers.com/videos/1146-fault-tolerance-and-consistency-at-scale-harnessing-the-power-of-distributed-sql-databases) ## 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) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [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)