1 to 25 of 27 Principal Data Scientist Jobs

Principal Data Scientist- Dublin/Letterkenny Optum is a global organisation that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you … impact in their work. We'll provide the investment, support, and resources to advance your career. You'll provide the talent, ambition, and drive. About the role As a Principal Data Scientist within our Network Pricing team, you'll help with setting effective drug pricing within our provider networks to meet client and pharmacy contract guarantees through … opportunity to split their monthly work hours between our Dublin or Letterkenny offices and telecommuting from a home-based office in a hybrid work model. Primary Responsibilities of a Principal Data Scientist Ideate and conceptualize innovative solutions, critically analyze challenges, test hypotheses, and provide data-driven insights to inform key business decisions Undertake complex pricing analyses More ❯

Principal Data Scientist - Network & PI Analytics- Dublin, Letterkenny UnitedHealth Group is a health care and well-being company that's dedicated to improving the health outcomes of millions around the world. We are comprised of two distinct and complementary businesses, UnitedHealthcare and Optum, working to build a better health system for all. Here, your contributions matter as … Group, we're expanding our team in Ireland. We offer the investment, support, and resources to grow your career, while you bring the talent, ambition, and drive. As a Principal Data Scientist on the UnitedHealthcare Network & Payment Integrity Analytics team , you'll play a key role in applying advanced analytics to lower the cost of healthcare for … our members. You'll lead high-impact projects, collaborate with senior stakeholders, and help drive innovation across provider networks and claims data platforms. Primary Responsibilities of the Principal Data Scientist - Network & PI Analytics: Code daily to build and deploy impactful data science solutions, taking full ownership of projects, delivering measurable improvements in healthcare cost, quality More ❯

We're looking for three talented Principal Data Scientists to join our supportive and forward-thinking Commercial Data team. Each role offers a unique opportunity to make a real impact and shape how we use data to create meaningful change across the business. You'll join a team that values openness, curiosity, and innovation, where your … voice is heard and your contributions make a difference. Here, you can grow, mentor others, explore new ideas and help us deliver smarter, more impactful solutions across the business. Principal Data Scientist Pricing - We're looking for someone who's eager to make a genuine difference, helping shape how we approach pricing in a rapidly evolving energy … You'll work closely with our Pricing team, combining your technical strengths with a collaborative, people-first mindset to deliver insights that drive smarter, fairer and more sustainable decisions. Principal Data Scientist AI & Flex - This role will focus on supporting AI and Data Science within our Flex space one of the most exciting and strategically important More ❯

As a Principal Data Scientist at Hiscox, you will play a pivotal role as a critical thinker for Hiscox, applying your deep expertise to address our most intricate business challenges and uncover significant opportunities within our data landscape. You will utilise your technical skills and innovative mindset to tackle complex business problems and identify opportunities for … growth. Additionally, you will provide ad hoc analysis and develop predictive and prescriptive models to foster a data-driven culture within Hiscox. You will act as a technical mentor and guide to our team members, fostering best practices, elevating coding standards, and driving advanced analytical techniques across the team. Your ability to translate complex technical findings into clear, actionable … and specific business needs. Operating within a dynamic and evolving environment, you will play a key role in continuously advancing our technical capabilities and ensuring the effective application of data science across the insurance value chain. The role As a Principal Data Scientist, you will be an integral part of a dynamic technical team, strategically focused More ❯

As a Principal Data Scientist at Hiscox, you will play a pivotal role as a critical thinker for Hiscox, applying your deep expertise to address our most intricate business challenges and uncover significant opportunities within our data landscape. You will utilise your technical skills and innovative mindset to tackle complex business problems and identify opportunities for … growth. Additionally, you will provide ad hoc analysis and develop predictive and prescriptive models to foster a data-driven culture within Hiscox. You will act as a technical mentor and guide to our team members, fostering best practices, elevating coding standards, and driving advanced analytical techniques across the team. Your ability to translate complex technical findings into clear, actionable … and specific business needs. Operating within a dynamic and evolving environment, you will play a key role in continuously advancing our technical capabilities and ensuring the effective application of data science across the insurance value chain. The role As a Principal Data Scientist, you will be an integral part of a dynamic technical team, strategically focused More ❯

Here's what you'll be doing: As a Principal Data Scientist you will be part of a team, that is bringing AI and Data Science into the forefront of SB. We are looking to unify our technical vision and are looking for an experienced, technical but pragmatic Staff Data Scientist to enable our … wider team to deliver value, quickly. The role will report into Josh Dawson our Head of Analytics and Data Science, and sit alongside our talented Data Science team. As our Principal Data Scientist, you'll: work closely with cross-functional development teams to build, test and maximise the value of a suite of models ranging … models contribute to End to end development and deployment of ML and AI models have the ability to define best practice for a team of highly talented and experienced Data Scientists have the opportunity to work with stakeholders in a high-pace, agile environment which encourages autonomy and growth. simply, this role will have autonomy to create best practices More ❯

Principal Data Scientist page is loaded Principal Data Scientistlocations: London UK: Nottingham UKtime type: Full timeposted on: Posted Todayjob requisition id: JR102916We're looking for a Principal Data Scientist who is eager to make a real difference, helping shape how we approach pricing in a rapidly evolving energy industry. In this role … you'll bring your technical strengths together with a collaborative, people-first approach, ensuring your work has a meaningful and lasting impact.You'll be part of a supportive Commercial Data team, working hand-in-hand with colleagues and stakeholders across the business. By combining deep technical expertise with an open, consultative mindset, you'll help unlock fresh opportunities, create … smarter data-driven solutions and build confidence in the value data science can deliver. Here's a taste of what you'll be doing: Guiding data science projects from initial ideas through to delivery, ensuring work is both rigorous and impactful Partnering with colleagues across functions, listening carefully, and helping them see what's possible through data More ❯

Principal Data Scientist | Series B | FinTech | SaaS | Scale-Up Location: London Area, United Kingdom (Hybrid) Salary: Up to £140,000 + Equity Skills: Machine Learning | AI | Product ML | Deep Learning | Data Platforms Our client is a rapidly scaling Series B FinTech SaaS business backed by leading VCs. Their platform is used by top financial institutions, digital … banks, and emerging fintech innovators to power real-time risk intelligence, automate decisions, and deliver data-driven financial products at scale. As they enter their next growth phase, they’re expanding their Data Science function with a Principal Data Scientist who will set the technical direction, drive product-embedded AI, and help shape the future … of data intelligence in financial services. If you’re excited by high ownership, greenfield innovation, and the chance to build category-defining AI in a fast-moving scale-up — this is that role. ROLE: Principal Data Scientist You’ll be the most senior individual contributor within Data Science — leading technical strategy, architecture, and delivery of More ❯

Principal Data Scientist | Series B | FinTech | SaaS | Scale-Up Location: London Area, United Kingdom (Hybrid) Salary: Up to £140,000 + Equity Skills: Machine Learning | AI | Product ML | Deep Learning | Data Platforms Our client is a rapidly scaling Series B FinTech SaaS business backed by leading VCs. Their platform is used by top financial institutions, digital … banks, and emerging fintech innovators to power real-time risk intelligence, automate decisions, and deliver data-driven financial products at scale. As they enter their next growth phase, they’re expanding their Data Science function with a Principal Data Scientist who will set the technical direction, drive product-embedded AI, and help shape the future … of data intelligence in financial services. If you’re excited by high ownership, greenfield innovation, and the chance to build category-defining AI in a fast-moving scale-up — this is that role. ROLE: Principal Data Scientist You’ll be the most senior individual contributor within Data Science — leading technical strategy, architecture, and delivery of More ❯

Our Principal Data Scientists are responsible for leading and delivering strategically significant, complex client engagements across our portfolio of clients. We believe that great delivery stems from a thorough understanding of our clients and their needs, strong discipline skills and subject matter expertise, excellent leadership and a clear vision of lasting and effective change in a public sector … environment. We expect our Principal Data Scientist to bring all of that and enthuse our delivery teams with the same passion. The successful candidate will lead the Data Science aspects of our client engagements while overseeing the wider delivery within the account (or industry) when appropriate. They will coach and develop team members on their engagements … providing them with detailed performance feedback, as well as monitoring overall delivery to achieve the highest levels of client satisfaction. In addition, our Principal Data Scientists are responsible for engaging with our clients to understand their challenges and build lasting, trusted advisor relationships. They will also oversee multiple, concurrent client deliveries to help ensure quality and drive the More ❯

Lead/Principal Data Scientist London - 3 days a week Up to £135,000 About the Company We’re working with a next-generation private markets firm that is redefining value creation by combining deep industry expertise with data science and machine learning. This is a unique opportunity to join a company that partners directly with … portfolio companies to drive measurable operational and financial performance. They’re now hiring a Lead/Principal Data Scientist to lead machine learning projects across a wide variety of real-world domains. Working closely with a multidisciplinary team, you’ll have the autonomy to shape technical approaches while staying closely tied to commercial outcomes. This role is … ideal for someone who enjoys solving complex, ambiguous business problems using data science, and wants to work at the intersection of technology, investment, and strategy. Key Responsibilities Translate complex business problems into measurable data science solutions that deliver commercial value Lead the design, development, and deployment of predictive and optimisation models across multiple industries Own the end-to More ❯

Lead/Principal Data Scientist London - 3 days a week Up to £135,000 About the Company We’re working with a next-generation private markets firm that is redefining value creation by combining deep industry expertise with data science and machine learning. This is a unique opportunity to join a company that partners directly with … portfolio companies to drive measurable operational and financial performance. They’re now hiring a Lead/Principal Data Scientist to lead machine learning projects across a wide variety of real-world domains. Working closely with a multidisciplinary team, you’ll have the autonomy to shape technical approaches while staying closely tied to commercial outcomes. This role is … ideal for someone who enjoys solving complex, ambiguous business problems using data science, and wants to work at the intersection of technology, investment, and strategy. Key Responsibilities Translate complex business problems into measurable data science solutions that deliver commercial value Lead the design, development, and deployment of predictive and optimisation models across multiple industries Own the end-to More ❯

Data, Research & Analytics Principal Data Scientist (H/F) Job Description in French (English version at the bottom) Preferred location: Paris, France LexisNexis Risk Solutions is a global leader in technology and data analytics, tackling some of the world's most complex and meaningful challenges - from stopping cybercriminals to enabling frictionless experiences for legitimate consumers. … As a Principal Data Scientist , you will play a key role in shaping the future of our AI capabilities across multiple products within our Fraud, Identity, and Financial Crime Compliance portfolio. You will lead the ideation, research, modeling, and implementation of new AI-driven features - with a strong focus on Large Language Models (LLMs) , Generative AI , and … global organizations operate safely and efficiently. You will also contribute to the company's long term AI strategy and act as a thought leader and role model within the data science teams. Operating within a global organization, you will collaborate closely with engineering labs, analytics teams, and professional services, while staying attuned to customer feedback and business priorities. A More ❯

The Vacancy Are you a Principal Data Scientist looking to join an organisation where what you do genuinely makes an impact? Where you are empowered, heard and able to think creatively? Then look no further because we are what you have been looking for! We are looking for a Senior Principal Data Scientist with … teams and the ability to communicate with both technical and non-technical teams across the business. This role sits within Optum UK Health Analytics team responsible for taking large data sets from various sources and converting them into meaningful insights on UK healthcare. You will play a key role in developing and implementing Optum UK’s data science … the way. If this sounds like something you want to be a part of then apply today! What you’ll do You will take ownership of the UK’s data science function, this will include providing strategic and technical direction, team building and communicating with senior stakeholders across the business. Other key responsibilities and accountabilities will include; Provide strategic More ❯

Principal Product Data Scientist I Viator About Viator Viator, a Tripadvisor company, is the leading marketplace for travel experiences. We believe that making memories is what travel is all about. And with 300,000+ travel experiences to explore-everything from simple tours to extreme adventures (and all the niche, interesting stuff in between)-making memories that will … last-minute availability, it's never too late to make any day extraordinary. Viator. One app, 300,000+ travel experiences you'll remember. What you will do: 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 … 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. 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 as a More ❯

Principal Data Scientist Logistics AI Company (Up to £120,000 per annum) London (4 days per week in office) La Fosse have partnered with a ambitious AI company transforming how businesses in the logistics sector operate. La Fosse are supporting this rapidly expanding AI business in preparing for an international launch, we’re now looking for a … Senior and Principal Data Scientist. What you’ll be doing: Build, deploy, and scale machine learning systems that forecast demand, optimise staffing, and improve operational performance across thousands of venues. Lead projects end-to-end, from data design and modelling through to validation, deployment, and monitoring. Develop AI systems across areas such as computer vision, forecasting, optimisation … and emerging generative or agentic models. Partner with engineers to design scalable ML pipelines, APIs, and real-time infrastructure. About you: Background in Computer Science, Mathematics, Data Science, or AI (Master’s or PhD preferred). 5+ years’ experience developing and deploying ML models in production environments. Strong Python skills, with experience in frameworks like PyTorch, TensorFlow, or Hugging More ❯

Principal Data Scientist Logistics AI Company (Up to £120,000 per annum) London (4 days per week in office) La Fosse have partnered with a ambitious AI company transforming how businesses in the logistics sector operate. La Fosse are supporting this rapidly expanding AI business in preparing for an international launch, we’re now looking for a … Senior and Principal Data Scientist. What you’ll be doing: Build, deploy, and scale machine learning systems that forecast demand, optimise staffing, and improve operational performance across thousands of venues. Lead projects end-to-end, from data design and modelling through to validation, deployment, and monitoring. Develop AI systems across areas such as computer vision, forecasting, optimisation … and emerging generative or agentic models. Partner with engineers to design scalable ML pipelines, APIs, and real-time infrastructure. About you: Background in Computer Science, Mathematics, Data Science, or AI (Master’s or PhD preferred). 5+ years’ experience developing and deploying ML models in production environments. Strong Python skills, with experience in frameworks like PyTorch, TensorFlow, or Hugging More ❯

Lead/Principal Data Scientist x2/3 days a week in the office About the Role & Company This is a leadership opportunity at a fast-scaling AI consultancy known for its technical excellence and track record in delivering real-world impact across highly regulated industries. The team helps major clients in finance, insurance, legal, etc., apply … cutting-edge data science in complex operational environments, balancing innovation with reliability and rigour. You’ll join a deeply technical, collaborative group working on custom AI and machine learning solutions that support automation, forecasting, and decision intelligence. The focus is on strategic value creation: solving ambiguous problems with clarity, and delivering tools that embed into the heart of client … systems. What You’ll Be Doing Set the technical direction on multi-disciplinary data science & AI projects, from approach selection to architecture design Take ownership of full solution pipelines, leading hands-on development and supporting others to do the same Work closely with senior client stakeholders to shape project scope, track value delivery, and communicate findings Oversee a small More ❯

Lead/Principal Data Scientist x2/3 days a week in the office About the Role & Company This is a leadership opportunity at a fast-scaling AI consultancy known for its technical excellence and track record in delivering real-world impact across some of the most important companies globally. The team helps major clients in the … Retail sector apply cutting-edge data science in complex operational environments, balancing innovation with reliability and rigour. You’ll join a deeply technical, collaborative group working on custom AI and machine learning solutions that support automation, forecasting, and decision intelligence. The focus is on strategic value creation: solving ambiguous problems with clarity, and delivering tools that embed into the … heart of client systems. What You’ll Be Doing Set the technical direction on multi-disciplinary data science & AI projects, from approach selection to architecture design Take ownership of full solution pipelines, leading hands-on development and supporting others to do the same Work closely with senior client stakeholders to shape project scope, track value delivery, and communicate findings More ❯

Location: London (Hybrid) Contract Type: Permanent About the Role We are working with a leading financial technology innovator to recruit a Principal Data Scientist for a flagship digital banking transformation programme. This role is pivotal in developing advanced machine learning solutions that enhance credit risk modelling, fraud detection, and personalised financial services for millions of customers. The … in areas such as credit scoring, transaction monitoring, and customer segmentation. This is a chance to influence the architecture of next-generation banking platforms while mentoring a team of data scientists and collaborating with engineering and product leaders. Key Responsibilities Drive end-to-end delivery of data science solutions for digital banking and risk analytics use cases. Build … teams to embed intelligent decision engines into core banking workflows. Define best practices for model governance, explainability, and regulatory compliance in financial services. Lead and coach a team of data scientists, ensuring technical excellence and innovation. What We’re Looking For 10+ years of experience in data science or applied machine learning, ideally within financial services or fintech. More ❯

Location: London (Hybrid) Contract Type: Permanent About the Role We are working with a leading financial technology innovator to recruit a Principal Data Scientist for a flagship digital banking transformation programme. This role is pivotal in developing advanced machine learning solutions that enhance credit risk modelling, fraud detection, and personalised financial services for millions of customers. The … in areas such as credit scoring, transaction monitoring, and customer segmentation. This is a chance to influence the architecture of next-generation banking platforms while mentoring a team of data scientists and collaborating with engineering and product leaders. Key Responsibilities Drive end-to-end delivery of data science solutions for digital banking and risk analytics use cases. Build … teams to embed intelligent decision engines into core banking workflows. Define best practices for model governance, explainability, and regulatory compliance in financial services. Lead and coach a team of data scientists, ensuring technical excellence and innovation. What We’re Looking For 10+ years of experience in data science or applied machine learning, ideally within financial services or fintech. More ❯

Principal Data Scientist, AI Security Research Alan Turing Institute London, United Kingdom Research Programmes Company Description Named in honour of Alan Turing, the Institute is a place for inspiring, exciting work and we need passionate, sharp, and innovative people who want to use their skills to contribute to our mission to make great leaps in data … with government partners such as select UK universities. Please note that applicants must already have Developed Vetting (DV) clearance in order to apply for this role. ROLE PURPOSE The Principal will take lead in forming a new research group and develop an R&D portfolio to reflect the biggest challenges in the AI security domain. These challenges, held in … role is suited to candidates who are both familiar with the national security domain and the application of research to national security challenges and are themselves a researcher in data science and artificial intelligence with an outstanding track record of research or similar experience across related disciplines and a strong foundation in mathematics, statistics, or theoretical computer science. A More ❯

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 for financial markets and professionals.We're looking for someone who combines … Familiarity with DevOps practices including CI/CD, version control, automated testing, and monitoring to support reliable model deployment and maintenance. Education Bachelor's degree in Engineering, Computer Science, Data Science, Statistics, Mathematics, Physics or a related field, or equivalent practical experience. What you'll get in return: High-impact projects : Work on innovative AI products that solve complex … ready to take your career to the next level and make a significant impact, we'd love to hear from you.LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.Our purpose is the foundation on which our culture is built. Our values of More ❯

curiosity, and a willingness to challenge how things have always been done. That's exactly the mindset this rapidly expanding European tech company is looking for in its next Principal Data Scientist. As they continue to scale off the back of real success, their mission is clear: make AI more accessible and impactful for businesses everywhere. Their intelligent … products help organisations tap into the power of data to drive smarter decisions, uncover hidden opportunities, and transform operations, and you'll play a key role in making that happen. Responsibilities In this role, you'll be responsible for leading a talented team of data scientists and ML engineers, helping to architect, build, and refine intelligent systems from … experimentation, to production deployment and performance monitoring. Setting high standards while creating space to learn and grow through trial and iteration. You'll bring a deep understanding of modern data science and machine learning techniques, and know when to apply the right tools, whether that's deep learning, statistical modelling, or classical ML methods. Your toolkit includes Python, SQL More ❯

Why We Work at Dun & Bradstreet Dun & Bradstreet combines global data and local expertise to help clients make smarter decisions. With 6,000+ people in 31 countries, we are a team of diverse thinkers and problem solvers who all share a common curiosity: to find new ways to turn data into value. If you share this curiosity and … want to be part of a future-ready company, come join us! Learn more at . As part of a new team within Dun & Bradstreet's Data & Analytics group, you will engage with prospects to determine where analytical solutions and consultancy will aid in solving customer problems. You will work with the customer and Data Scientists to agree … role leads the design, development, and deployment of Analytics as a Service (AaaS) solutions. It blends advanced analytics, AI, machine learning, and platform strategy to deliver robust and automated data science capabilities across business units and to external clients. You will be responsible for all customer aspects of the modeling engagement, including design, development, validation, calibration, documentation, approval, implementation More ❯