Top Tech Jobs & Startup Jobs in London

Lead development and deployment of multimodal neural search and ranking models for personalized learning. Conduct research, prototype and productionize deep learning NLP/IR solutions, collaborate cross-functionally, mentor junior scientists, and establish ML best practices.

Lead technical direction across multiple squads; design, build, and scale backend systems (Python/Django), data pipelines, and third-party integrations; drive complex initiatives end-to-end; mentor engineers, run architectural reviews, and improve reliability, observability, and performance; partner with PMs and leadership on roadmaps and trade-offs; participate in on-call rotation.

As a Senior Data Scientist, you will optimize marketing performance, develop machine learning models, analyze A/B tests, and collaborate closely with marketing and data engineering teams.

The Senior Data Scientist will optimize marketing campaigns using data solutions, machine learning models, and collaboration with performance marketing teams to enhance business strategies at Preply.

The Director of SEM will oversee global SEM strategy, manage a high-budget channel, lead a team of specialists, drive performance, and integrate AI into SEM processes, focusing on growth and efficiency.

Lead applied research and development of deep learning, NLP, and multimodal LLM solutions for personalized learning. Prototype, productionize, and optimize AI tutors; collaborate with product and engineering; mentor junior scientists; and establish ML best practices to improve learner outcomes.

Lead MarTech product initiatives to scale paid acquisition, organic and AI search, creative automation, landing-page personalization, and channel management. Partner with engineering, data, and marketing to build AI-native platforms, run experiments, and drive measurable growth and efficiency across global channels.

Own availability, performance, scalability and observability of mission-critical platform services. Build automation and tooling, participate in on-call rotations, lead incident response and postmortems, collaborate with product teams, and follow FinOps best practices to improve platform reliability and cost-efficiency.

Lead technical direction across platform squads, ship and operate critical platform services, improve CI/CD and delivery workflows, drive reliability (SLOs, observability, runbooks), remediate production issues, mentor engineers, and participate in on-call and incident response to raise platform quality and developer experience.

Design and evolve global CRM and lifecycle experiences across email, push, in-app, and landing pages. Treat CRM as a product surface, create connected, on-brand concepts, collaborate cross-functionally, run experiments, and use data to iterate and improve engagement and retention.