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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead Java Engineer (Risk) - **Company:** London Construction Jobs - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Apache ActiveMQ, Artificial Intelligence, Amazon Web Services, Business Analytics Applications, Audit Trail, C++ (Programming Language), Cloud Computing, Continuous Integration, Linux, DevOps, Monitoring of Systems, IBM WebSphere MQ, IntelliJ IDEA, Java Message Service (JMS), Junit, Apache Maven, Systems Development Life Cycle, Reference Data, Mockito, Ansible, Spring-boot, Gitlab, Git, Deployment Automation, Apache Kafka, Terraform, Cucumber (Software), Software Version Control, Server Operating Systems & Platforms - **Published:** August 26, 2026 - **Apply:** https://www.totaljobs.com/job/lead-java-engineer/london-stock-exchange-job107897070 ## About the Role * Strong server-side Java engineering experience (Java 11+; Java 17+ preferred) using Spring / Spring Boot * Ability to understand quantitative models and make informed implementation trade-offs when integrating them into production systems * Practical experience contributing to or shaping a risk-engine architecture capable of executing computationally intensive models at scale * Strong understanding of enterprise platform concerns, including: + Performance and scalability + Resilience and recovery + Auditability, controls and operational readiness * Comfortable working in a regulated / controlled environment with disciplined SDLC and production change processes * Clear communicator with the ability to influence technical decisions through expertise and collaboration * Ownership mindset, with a drive to improve quality, robustness and long-term maintainability of the platform * An interest in modern engineering productivity approaches, including the efficient use of AI-assisted tooling (e.g. Copilot-style tools) to aid codebase comprehension, documentation & delivery - applied appropriately within a controlled environment Technical Environment (Indicative) * Java, Spring Boot, Maven, IntelliJ * Messaging: JMS, ActiveMQ / IBM MQ, Kafka * Linux-based server environments * CI/CD: GitLab, JUnit, Mockito, Cucumber * Git-based source control Preferred / Nice to Have * Experience working alongside C++ or other native analytics libraries * Familiarity with derivatives products, particularly credit derivatives * Exposure to cloud or hybrid environments (e.g. AWS) * Infrastructure-as-code or deployment automation (e.g. Terraform, Ansible) * Monitoring and observability tooling in enterprise environments Why This Role This role offers the opportunity to work hands-on at the heart of a critical risk platform, contributing to systems where correctness, performance and resilience are essential. It combines deep Java engineering with technical leadership, giving scope to influence how quantitative risk calculations are executed in production and to help shape the execution model for CDSClear's next-generation risk platform. ## Description CDSClear is responsible for clearing Credit Default Swap (CDS) indices, single names and options across European, US and Asian markets. Risk is a core capability of the service, supporting intraday and overnight batch margin calculations, member-facing what-if simulations, and pricing analytics. This contract role sits within CDSClear Risk Technology, focused on the Java-based risk platform and risk engine that delivers quantitative margin models at scale in a highly regulated environment., The role is suited to experienced engineers who have worked on risk, pricing or analytics platforms in an investment bank, CCP or similar financial services environment. You will work on systems that sit at the core of the clearing service, where correctness, performance, resilience and operational control are essential You will help build and implement the platform components and execution patterns that allow quantitative risk models to run reliably in production, contributing directly to both system behaviour and overall platform direction. This is a Lead Individual Contributor (IC) role: highly hands-on, with significant influence over design and technical direction, and an expectation of strong ownership across the end-to-end lifecycle of the systems you work on., * Act as a Lead Java Engineer within the CDSClear Risk Development team, contributing across all stages of the SDLC * Design, implement and evolve core risk-engine components supporting intraday and overnight batch margin calculations * Contribute to the implementation of quantitative risk models by translating analytic requirements into production-grade system behaviour + Provide technical leadership across Risk calculation orchestration + Integration of market data, trade data, reference data and model parameters + Performance, scalability, determinism and failure handling * Own delivery of business requirements through development, testing and controlled production release * Drive evolution of the risk platform, combining incremental improvements with more substantial architectural step-changes, while maintaining a strong focus on delivery, quality and maintainability * Collaborate with infrastructure, security and DevOps teams to deliver end-to-end solutions * Participate in third-line system support, including out-of-hours rota where required ## 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) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Inside Bitpanda's Tech Stack: Scaling a European Fintech Leader - Markus Dorner](https://www.wearedevelopers.com/videos/1979-inside-bitpanda-s-tech-stack-scaling-a-european-fintech-leader-markus-dorner) - [From boy scouting to redrawing the landscape](https://www.wearedevelopers.com/videos/1140-from-boy-scouting-to-redrawing-the-landscape) ## Related Articles - [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) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)