Top Tech Jobs & Startup Jobs in London

Lead and scope strategic mixed-method UX research programs across product areas; partner with product, engineering, and business teams; mentor researchers; run qualitative and quantitative studies from concept through post-release measurement; build research infrastructure and operations; communicate insights to stakeholders and executives to inform product decisions.

The Lead NoSQL Engineer will manage NoSQL databases, lead a team, support database operations, and oversee infrastructure automation while ensuring optimal performance and mentoring.

Design, build, operate and support high-scale backend services and GraphQL APIs. Build Kafka-driven ingestion pipelines that validate and anonymize first-party data, ensure asynchronous correctness, and maintain transactional consistency across services. Own end-to-end systems including production reliability, observability, testing, on-call duties, cross-team design, and mentoring.

Provide hands-on privacy legal support for EMEA/APAC commercial deals, negotiating data/privacy terms, advising sales and procurement, owning cross-border transfer frameworks, monitoring regulatory developments, and building scalable privacy playbooks and templates.

Design, build, and own front-end features across the full software lifecycle for a large-scale, distributed advertising platform. Deliver high-performance, user-focused UIs, collaborate with product and UX, write tests and monitoring, lead and mentor engineers, and drive complex cross-component changes.

The Staff Applied Scientist will build control systems, design experiments, develop recommendation frameworks, and partner across teams to translate research into scalable solutions, impacting ad spend efficiently.

Lead Staff Software Engineers manage projects and teams, guiding technical direction and strategy while contributing to software development at scale.

The Senior Recruiter will lead full-cycle recruitment, manage candidate relationships, and enhance hiring processes for various roles across the EMEA region, ensuring candidate experience and operational efficiency.

Lead operational success for inventory partnerships across EMEA, manage publisher platform deal libraries, resolve supply partner issues, ensure GDPR-compliant deal structures, synthesize reporting into actionable insights, coordinate global initiatives, and coach Sr. Analysts while providing product/engineering feedback.

Build and improve analytics and observability tools that make event data accessible across the company. Own end-to-end features for event tracking and data pipelines, extend governed self-service access, provide technical guidance, partner with business and product teams, raise testing and quality standards, and mentor other engineers.