# Lead Java Engineer - CDSClear Risk Technology

**Company**: London Stock Exchange Group (LSEG)
**Location**: London
**Experience**: senior
**Job type**: contract
**Category**: Engineering
**Industry**: Finance

**Apply**: https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/London-United-Kingdom/Lead-Java-Engineer--Risk-_R0121384?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_ac23a131-342

## Description

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.

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.

**Key Responsibilities:**

- 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

**Candidate Profile / Key Skills:**

- 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

**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

## Skills

### Required
- Java
- Spring Boot
- Maven
- IntelliJ
- JMS
- ActiveMQ
- IBM MQ
- Kafka
- GitLab
- JUnit
- Mockito
- Cucumber

### Nice to have
- C++
- derivatives products
- credit derivatives
- AWS
- Terraform
- Ansible

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Source: [Apply at lseg.wd3.myworkdayjobs.com](https://lseg.wd3.myworkdayjobs.com/en-US/Careers/job/London-United-Kingdom/Lead-Java-Engineer--Risk-_R0121384?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)