Top Tech Jobs & Startup Jobs in London

The Principal Architect will design technical architecture solutions, assess business requirements, support vendor assessments, and ensure adherence to digital standards in Finance programmes.

Design, develop and deliver enterprise-grade software and AI-powered analytics for financial markets. Build full-stack solutions with CI/CD, automated testing and cloud deployments (AWS/Azure). Collaborate across regions, solve complex problems, and continuously learn new technologies to improve customer-facing data and analytics products.

The Senior Attack Monitoring Analyst monitors and responds to cyber security incidents, utilizing SIEM tools and threat intelligence to improve detection capabilities.

Senior individual-contributor responsible for hands-on implementation, performance, scalability, resilience, and operational excellence of a Java/AWS-based Risk Screening platform. Partners with architects and SREs, leads complex changes, optimises large databases, and mentors engineering teams to ensure reliable, high-performance production systems.

Provides principal-level technical leadership for enterprise machine learning systems supporting a matching platform. Responsibilities include ML architecture, feature pipelines, model development, AWS SageMaker MLOps, low-latency inference, explainability, governance, security, monitoring, drift detection, testing, and deployment automation. The role mentors engineers, establishes engineering standards, and drives scalable, reliable, compliant ML platform capabilities across environments.

Design, build and maintain software and automation for control monitoring, testing, reporting and evidence collection. Integrate with security platforms (SIEM, IAM, EDR), cloud and engineering tools, develop APIs, CLI tools and data pipelines, and translate technical control activity into auditable evidence and reporting to reduce manual audit and assurance effort.

Lead development and productionisation of scalable AI models and data-driven solutions. Tune and optimise models, evaluate third-party AI tools, define coding standards, and collaborate with software engineers to deliver high-quality, maintainable production systems aligned with business goals.

Support the Director BISO to oversee information and cyber security for LCH Ltd: assess controls, manage remediation, monitor roadmaps, engage stakeholders and third parties, maintain cyber risk profiles and MI, assess project security designs, report to governance bodies, and embed security across the business.

Front-line B2B sales role driving revenue for LSEG's digital identity solutions. Own the full sales cycle from prospecting to close, build and manage pipeline, engage senior stakeholders, craft commercial proposals, collaborate cross-functionally, and position identity products to deliver growth, compliance, fraud reduction, and improved customer experience.

Lead product strategy and execution for LSEG's Open Directory within Workspace. Define requirements, prioritize features, run agile delivery, track KPIs and user analytics, collaborate with stakeholders to drive community adoption and AI-driven collaboration experiences.