Top Tech Jobs & Startup Jobs in London

Lead cloud security architecture for AWS and GCP: embed threat modeling and architecture reviews, design landing zones and automated guardrails, map controls to standards, support audit/regulatory requests, evaluate emerging tech and AI-assisted security, and influence security-first practices across product and engineering teams.

Lead design and execution of blockchain security operations: monitor on-chain/off-chain data, detect and respond to threats, collaborate cross-functionally, improve security posture, and implement detection for smart contracts and digital assets.

Design, build and support cloud-native, microservice back-end applications using JVM languages. Deliver end-to-end solutions, write comprehensive tests, manage production incidents, and apply enterprise-authorized AI-assisted development tools while following secure and responsible AI practices.

Lead development of microservices that fetch, enrich, consolidate, and distribute network metadata. Design, build, test, and maintain secure, resilient production code; drive adoption of AI-assisted engineering practices; automate remediation and CI/CD; evaluate vendor solutions; coach teams on responsible AI and cloud/network technologies; lead communities of practice and ensure operational stability.

Lead development and enhancement of equity derivatives trading and analytics applications, drive automation and AI-assisted engineering practices, collaborate with trading and quant teams, maintain global platform stability, and lead the Systematic Quoting Platform workstream for EMEA.

Design, build, and operate LLM inference backend services focused on routing, batching, scheduling, streaming, and quota management. Implement APIs/SDKs, profile and optimize performance (CPU, memory, network, GPU), improve reliability and observability, support CI/CD-safe deployments, and learn LLM serving fundamentals while applying responsible AI and enterprise-authorized AI-assisted development tools.

Lead engineer designing, developing, and troubleshooting ultra-low-latency electronic trading systems. Write high-quality C++14 production code for multithreaded, networked applications, collaborate with traders and cross-functional teams, lead engineering practices, participate across the SDLC, and drive automation and stability improvements for order routing, matching engines, market access, and risk systems.

Lead development of large-scale, real-time and historical market-data applications using KDB/Q. Drive system design, coding, performance optimization, scalability, high availability, and CI/CD automation. Mentor team members, manage delivery, partner with stakeholders and support teams, and help migrate and re-architect systems to AWS while improving operational stability and testing practices.

Lead delivery of complex Markets technology programs by developing project plans, managing resources and budgets, mitigating risks, driving agile adoption, validating AI-assisted outputs, and aligning technical initiatives with business goals while influencing stakeholders and improving program performance.

Lead platform engineering efforts to design, build, and operate Kubernetes-based cloud platform services. Develop secure production code, automate infrastructure and CI/CD, support production (you-build-it-you-run-it), drive reliability and security via IaC and policy-as-code, lead technical evaluations and communities of practice, and champion responsible AI-assisted engineering practices.