Top Tech Jobs & Startup Jobs in London

Conduct accessibility testing across design system components, mobile apps, and websites using assistive technologies; identify WCAG 2.1 and regulatory barriers; document findings with remediation recommendations; collaborate in GitHub, participate in code reviews, and coach teams to build inclusive digital products.

Support global fixed income index research by analyzing large datasets, building quantitative models, managing client projects, maintaining index operations, evaluating performance and market trends, and producing visualizations and reports to inform strategic product decisions.

Design, build, and productionize autonomous and assistive multi-agent AI systems. Implement RAG and semantic search with vector databases, integrate tools/APIs, apply prompt engineering and guardrails, orchestrate microservices workflows, instrument agents for metrics, run evaluations/A-B tests, and mentor teammates.

Lead strategy and delivery of agentic AI across the Commercial & Investment Bank: design, build, and productionize multi-agent systems and RAG pipelines; integrate tools and cloud deployments; implement evaluation, safety, and observability; partner with stakeholders to deliver business impact; and mentor teams on LLMs, agent frameworks, and best practices.

Lead product development for equity derivatives trading platforms: define business purpose, write and validate specifications (Margin Loans, Financing, Convertible Bonds), align technology investments, manage delivery and governance, engage traders/quants/tech/compliance, and assess emerging trends. Collaborate globally and support occasional international travel.

Lead private company coverage of fintech and payments firms: conduct fundamental research using traditional and alternative data, build models, write and market research notes, advise clients, build industry relationships, and coach junior analysts. Requires fintech/payments domain expertise and advanced data/market tool proficiency.

Hands-on lead engineer responsible for designing, developing, reviewing, and shipping secure, production-ready payment systems. Drive architecture, operational stability, automation, vendor evaluations, and mentor engineers while contributing to technical direction and team culture.

Plan, run and analyse web and app-store experiments to improve customer conversion. Use quantitative and qualitative analysis to build hypotheses, manage an experimentation roadmap, monitor page performance, manage product pages/store listings, and collaborate with SEO and cross-functional teams to drive acquisition.

Lead design and delivery of production-grade LLM and multimodal AI systems. Architect scalable APIs, agentic workflows, and high-throughput microservices. Own end-to-end reliability, performance, and continuous improvement while partnering with ML engineering, product, and cloud teams to deploy secure, enterprise-grade AI at scale.

Lead integration and DevOps work for a low-latency equities onboarding team: participate in requirements, design, development, production rollouts, integration testing, release management, and automation using Linux, Python, shell scripting, networking and FPGA technologies to ensure stable, high-quality deliveries.