Latest Data Scientist Jobs

Principal Data Scientist

A Principal Data Scientist will lead technically complex AI projects for high-impact clients, focusing on machine learning and Generative AI solutions. The role involves setting technical direction, mentoring data scientists, and contributing to thought leadership through publications and conferences. Work spans financial services with an emphasis on responsible, scalable AI deployment.

Faculty AI London, United Kingdom

Hybrid Permanent

Principal Data Scientist (Fine-tuning & Model Optimisation)

Lead the design and implementation of fine-tuning strategies for large language models, from selecting base models to deploying optimised versions in production. Build evaluation frameworks and reproducible experiment pipelines while mentoring a technical team. Work across data, domain, and product functions to deliver reliable AI models for regulated, real-world applications.

Experis United Kingdom £110,000 – £130,000 pa

Senior Data Scientist (Safety)

Lead high-impact AI safety projects by designing novel evaluation frameworks and robust software architectures for frontier AI labs. Mentor technical team members, ensure scientific rigor, and contribute to thought leadership through research and open-source contributions. Work at the intersection of national security and cutting-edge AI to advance responsible deployment.

Faculty London, United Kingdom

Hybrid Permanent

Principal Data Scientist

A Principal Data Scientist will lead high-impact machine learning initiatives within the Defence sector, driving technical strategy and client delivery. The role involves scoping complex AI solutions, writing production-grade code, mentoring junior scientists, and supporting technical sales. Work includes on-site collaboration with government clients and shaping ethical, cutting-edge AI applications in high-stakes environments.

Faculty London, United Kingdom

Hybrid Permanent

Senior Data Scientist (Imaging)

This role involves curating and analyzing high-content imaging datasets such as cell painting and brightfield assays to build generative and predictive models of cellular behaviour. The Senior Data Scientist will work closely with wet lab teams to ensure data quality, evaluate deep learning models, and integrate imaging data with multi-omic readouts. The position emphasizes interdisciplinary collaboration, model interpretability, and translating biological insights into therapeutic strategies.

Relation Therapeutics London, United Kingdom

On-site Permanent

Senior Data Scientist (Single Cell)

This role involves developing and maintaining scalable data pipelines for single-cell multi-omics data, integrating transcriptomics, chromatin accessibility, proteomics, and imaging to build multimodal datasets for machine learning. The Senior Data Scientist will work closely with wet lab scientists and ML teams to design experiments, evaluate biological relevance of models, and drive insights into cellular decision-making. The position emphasizes advanced computational analysis, interdisciplinary collaboration, and the use of modern ML tooling in a high-impact drug discovery environment.

Relation Therapeutics London, United Kingdom

Permanent

Senior Data Scientist

The role involves end-to-end ownership of international revenue analytics and production data science models for a global SaaS client, with responsibilities spanning anomaly detection, regulatory reporting, email campaign analysis, and model maintenance. The individual will operate independently under tight deadlines, supporting cross-functional teams while ensuring data quality and system reliability. A key focus is sustaining existing BAU systems rather than greenfield development, with eventual handover to a permanent team.

EF Recruitment London, United Kingdom £400 – £450 pd

Senior Data Scientist - AI, NLP & Generative AI

This role involves designing and deploying advanced AI systems, particularly focused on LLMs, Retrieval-Augmented Generation (RAG), and NLP for knowledge discovery and decision support in scientific and healthcare domains. The data scientist will build production-ready applications for search, summarisation, and question answering, integrating semantic and vector search with structured knowledge. Emphasis is placed on robust evaluation, responsible AI, and collaboration with engineering and product teams to scale solutions.

Robert Walters Ec2Y5As, United Kingdom £50,000 – £70,000 pa

Senior Data Scientist

This role involves designing and deploying Generative AI and LLM-based solutions for synthetic data generation and data augmentation. You will work closely with Product and Engineering to take models from experimentation to production, ensuring data quality and reliability, and communicating technical concepts to non-technical stakeholders.

Harnham - Data and Analytics Recruitment London, United Kingdom £80,000 – £95,000 pa

Remote Permanent

DV Cleared Data Scientist

Lead and mentor a team of data scientists while driving advanced AI/ML model development and data exploitation on critical national systems. This role combines hands-on technical delivery with strategic leadership to enhance data science capabilities using machine learning, geospatial analytics, and custom algorithm development in a high-security environment.

Salt United Kingdom £70,000 – £100,000 pa

Senior Applied Data Scientist

This role involves leading end-to-end data science projects to enhance customer personalisation for major retail clients like Tesco UK. You'll design and deploy machine learning solutions using large-scale transactional data, conduct A/B testing, and translate complex insights for both technical and business audiences. The role emphasizes innovation, collaboration with high-impact teams, and deploying scalable data products in a fast-paced environment.

dunnhumby London, United Kingdom

Hybrid Permanent

Sr. Data Scientist - GenAI

Lead the development and deployment of cutting-edge generative AI systems for cybersecurity, focusing on large language models and deep learning at scale. Drive research strategy, build production-ready AI solutions processing trillions of daily events, and provide technical leadership across cross-functional teams. Contribute to AI innovation through publications and thought leadership while shaping best practices in responsible AI adoption.

CrowdStrike England

Remote Permanent

Sr. Data Scientist - GenAI

Lead the research strategy for applying AI to cybersecurity, focusing on generative AI, large language models, and deep learning. Develop production-ready AI systems at scale, mentor research teams, and drive innovation in reasoning, summarisation, and interactivity. Contribute to technical standards and represent the company through publications and thought leadership.

CrowdStrike England

Remote Permanent

Data Science

The role involves using advanced data science techniques to solve complex business problems in a retail environment. The Senior Data Scientist will develop predictive models, apply machine learning, and collaborate with stakeholders across domains such as pricing, supply chain, and marketing. Emphasis is placed on prototyping solutions, algorithm design, and communicating insights to both technical and non-technical audiences.

Pontoon London, City And County Of the City Of London, United Kingdom £500 – £750 pd

Hybrid Contract Part-time

Data Science Manager

The Data Science Manager will lead a team of Data Scientists, focusing on delivering measurable impact through advanced analytics and machine learning. Responsibilities include shaping the technical direction, translating complex outputs into commercial insights, and establishing best practices in experimentation and MLOps.

Data Idols London, United Kingdom £100,000 – £120,000 pa

Hybrid Permanent