1 to 25 of 31 Permanent Principal Data Scientist Jobs

Principal Data Scientist page is loaded## Principal Data Scientistremote type: On-Sitelocations: UK, Londontime type: Full timeposted on: Posted 2 Days Agojob requisition id: R0018598**Job Type:**Permanent**Build a brilliant future with Hiscox**Position: Principal Data ScientistReporting to: Lead Data ScientistLocation … London/YorkType: PermanentBand: 3As a Principal Data Scientist at Hiscox, you will be an integral part of a dynamic technical team, strategically focused on leveraging data science across our diverse business functions. While your expertise will be pivotal in transforming our underwriting capabilities, your influence ...

.Senior Principal Data Scientist page is loaded## Senior Principal Data Scientistlocations: UK - London (London Wall): Londontime type: Full timeposted on: Posted Todayjob requisition id: R107535**Senior Principal Data Scientist****About the Business**At Cirium our goal is to keep the world connected. … solutions, and scale products that deliver meaningful value to customers. Our environment supports autonomy, learning, and inclusive collaboration.**About the Role**As a **Senior Principal Data Scientist**, you will contribute deep technical expertise while helping shape best practices across the data science community. This ...

Principal Data Scientist page is loaded## Principal Data Scientistremote type: Hybridlocations: London, United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: R0020855## What You'll Do* Lead high-impact data science initiatives end-to-end, including problem framing, methodology selection, experiment development, implementation … Drive scalable experimentation with A/B and Multi-armed bandit testing frameworks, power analysis, variance reduction, and online-offline alignment.* Work together with Data Engineering, MLOps, and Game Tech teams to guarantee dependable data foundations, feature accessibility, and model deployment pathways.* Build internal data products ...

Data Science at Marshmallow Our Data Science team partners across the business to turn data into better decisions, smarter products, and simpler customer journeys. We work closely with Product, Engineering, and Operations to build and ship models and AI systems that are reliable in production and deliver … measurable impact. Within Data Science, this role sits in Claims , supporting Claims Fraud and the broader ambition to automate more of the claims journey. Claims is one of Marshmallow's most important customer touchpoints, and we're looking for a Principal Data Scientist who can provide ...

Role overview The Principal Data Scientist will lead significant data science work across AWTG and client programmes, shaping technical direction, standards and delivery approaches. The role requires deep expertise in data science, strong leadership and the ability to turn advanced analytics into organisational impact. … will work with multidisciplinary teams across data, AI, software engineering, product, QA and delivery to create practical outcomes for clients and end users. Key responsibilities Lead the scoping, design and delivery of complex data science products, models and analytical solutions. Set standards for modelling, validation, reproducibility, coding, documentation ...

Principal Data Scientist The closing date is 03 June 2026 Main Duties of the Job In this role, you will act as a senior technical authority, shaping and assuring complex analytical work that informs decision‐making across health systems, research and innovation partners. You will lead … development of analytical and data engineering standards, support the evolution of ICHP’s RWE offer, and provide hands‐on technical input to priority and high‐risk projects. For example, large‐scale linkage of NHS data with non‐healthcare resources (e.g. HMRC or Department for Education datasets ...

inspired to think big and bring your ambition to work every day, which is why, at British Airways the sky is never the limit. Principal Data Scientist You’ll be part of the Operations Delivery Intelligence (ODI) directorate, leading the delivery of high‐value data science … products that support and automate decision‐making across critical business areas. This team plays a vital role in unlocking value from data, driving optimisation and enabling evidence‐based decisions across the airline. What you’ll do: Lead the end‐to‐end delivery and lifecycle management of data science ...

hands-on data scientist with deep expertise in NLP and LLMs, strong Python coding skills, and a track record of deploying models to production? Do you thrive in building real-world AI solutions that are used by actual customers? If so, we'd love to talk … ROLE SUMMARY: As a Principal Data Scientist (individual contributor), you will play a hands-on role in designing, building, and deploying scalable AI solutions that go beyond prototypes and are actively used in production. You'll work closely with collaborative teams to co-develop innovative products ...

global insurance company is looking for a Principal Data Scientist to lead complex data science initiatives in London or York. You will manage the delivery of impactful data science projects and mentor fellow data scientists. Your role is pivotal in enhancing underwriting capabilities ...

AWTG Ltd. is seeking a Principal Data Scientist to lead complex data science projects while shaping technical standards and delivery approaches. This role demands extensive experience in data science solutions, applied statistics, and machine learning. You will guide teams while ensuring ethical practices in data usage. Candidates should excel in stakeholder communication and have a passion for mentoring and continuous improvement in data science capabilities. #J-18808-Ljbffr ...

## Principal Data Scientist & Machine Learning ResearcherApplylocations: Gloucester, South Gloucestershire: Manchester, Lancashire: London, Londontime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 01804570**Date Posted:**2026-02-23**Country:**United Kingdom**Location:**Gloucester, South Gloucestershire**Position Role Type:**Unspecified**Gloucester, London or Manchester****Hybrid role … safer and more connected world.**About the role:** This role is within the Strategic Research Group (SRG). The SRG are a team of Data Science, Machine Learning and AI specialists who develop novel AI solutions to mission focussed problems. In this role you will work with high levels ...

## Principal Data Scientist & Machine Learning ResearcherApplylocations: Gloucester, South Gloucestershire: Manchester, Lancashire: London, Londontime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 01804570**Date Posted:**2026-02-23**Country:**United Kingdom**Location:**Gloucester, South Gloucestershire**Position Role Type:**Unspecified**Gloucester, London or Manchester****Hybrid role … safer and more connected world.**About the role:** This role is within the Strategic Research Group (SRG). The SRG are a team of Data Science, Machine Learning and AI specialists who develop novel AI solutions to mission focussed problems. In this role you will work with high levels ...

## Principal Data Scientist & Machine Learning ResearcherApplylocations: Gloucester, South Gloucestershire: Manchester, Lancashire: London, Londontime type: Full timeposted on: Posted 30+ Days Agojob requisition id: 01804570**Date Posted:**2026-02-23**Country:**United Kingdom**Location:**Gloucester, South Gloucestershire**Position Role Type:**Unspecified**Gloucester, London or Manchester****Hybrid role … safer and more connected world.**About the role:** This role is within the Strategic Research Group (SRG). The SRG are a team of Data Science, Machine Learning and AI specialists who develop novel AI solutions to mission focussed problems. In this role you will work with high levels ...

leading analytics company in London is seeking a Senior Principal Data Scientist to provide technical leadership in advanced analytics and machine learning. This role involves mentoring fellow data scientists and collaborating with cross-functional teams to deliver data-driven solutions, with a focus … aviation sector. Ideal candidates will have expertise in data management, strong programming skills in Python and SQL, and the ability to communicate complex ideas effectively. This position offers generous company benefits and opportunities for personal growth. #J-18808-Ljbffr ...

hiring a Principal Data Scientist in the City of Westminster, responsible for leading complex analytical projects and ensuring high standards of data governance. Applicants should have significant experience in data science and technical oversight, expertise in R and Python, and knowledge of large datasets. … salary ranges from £88,250 to £100,355 per year, and the role entails providing hands-on technical input and influencing health data use for better population outcomes. #J-18808-Ljbffr ...

leading gaming company in London is looking for a Principal Data Scientist to lead high-impact data science initiatives. The role involves building machine learning solutions that drive player engagement and retention. Candidates should have a PhD or MSc and over 5 years of experience delivering … data products in the gaming industry. The position offers a hybrid work model and opportunities for professional growth in a supportive environment. #J-18808-Ljbffr ...

opportunity for meaningful innovation and are proud to set the gold‐standard for marrying technical excellence with safe deployment. About the role As a Principal Data Scientist at Faculty, you will serve as a technical leader and domain expert who owns and drives the delivery … most technically complex, high‐impact projects and programmes for our most important clients. You also will set the technical direction for the data science team, mentor, and develop them so our data scientists remain best in class. This position focuses on deep individual contribution and technical excellence, influencing ...

Principal Data Scientist – AI London, United Kingdom Posted 11 months ago Tech Stack TypeScript Java Artificial Intelligence Python Requirements Proficiency in Python, with experience building and maintaining AI systems, not just analyses. Experience working in Java or TypeScript environments beneficial. Experience with Claude, OpenAI, Bedrock is nice ...

leading analytics firm in London seeks a Senior Principal Data Scientist to drive advanced analytics in the aviation sector. This pivotal role emphasizes mentorship, technical leadership, and hands-on development of innovative data-driven solutions. Ideal candidates should be proficient in Python and SQL, experienced ...

Marshmallow is seeking a Principal Data Scientist to lead the Claims Fraud team. You will provide technical guidance, design ML and AI systems, and ensure robust decisioning. With your systems thinking, you’ll collaborate with product and engineering teams to enhance automation in claims processing. The ideal ...

leading AI consultancy in Greater London is looking for a Principal Data Scientist to lead complex projects and mentor a talented team. The ideal candidate has a strong background in machine learning, particularly in Generative AI, and extensive experience within financial services. Responsibilities include serving ...

About the Role As a Principal Product Data Scientist, you will operate as the most senior technical leader in the Product Data Science function. You will shape the vision, set the technical direction, and drive strategic impact through innovative analytical solutions. This role is both highly … technical and deeply collaborative, requiring excellence in leadership, communication, and cross‐functional influence. What You Will Do Lead and define the Data Science strategy for Product, ensuring that advanced analytics, data science, and AI methodologies are central to how we build great products and improve customer experiences. Serve ...

Java Script Works is seeking a Principal Data Scientist to leverage AI technologies in legal tech solutions based in London. The ideal candidate will possess strong proficiency in Python and should have experience with AI systems. Additional experience with Java or TypeScript is beneficial. This full-time ...

TripAdvisor LLC is seeking a Principal Product Data Scientist in Greater London to shape the vision and technical direction of the Product Data Science function. The role involves leading data science strategies, mentoring teams, and driving the adoption of innovative analytical solutions. The ideal candidate … extensive experience in data science, expert proficiency in Python and SQL, and exceptional leadership skills, with a focus on collaboration and critical thinking. The position offers the opportunity to influence product development and improve customer experiences. #J-18808-Ljbffr ...

summary Imperial College Health Partners (ICHP) is seeking an experienced Principal Data Scientisttoprovide senior technical leadership across our growingreal-worldevidence (RWE) portfolio.Weare seeking someone who can build a QA/QC and technical assurance framework from first principles--anchored in strong data architecture and process--to enable … technical authority, shaping and assuring complex analytical work that informsdecision-makingacross health systems,researchand innovation partners. You will lead the development of analytical and data engineering standards, support the evolution of ICHP's RWE offer, and providehands-ontechnical input to priority andhigh-riskprojects.For example,large-scalelinkage of NHS data ...