1 to 25 of 39 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 ❯

As a Principal Data Scientist, you will be part of a team bringing AI and Data Science into the forefront of SB. We 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 maximize the value of a suite of models ranging from LLM's to propensity, classification, and regression models contribute to end-to-end development and deployment … of ML and AI models define best practices for a team of highly talented and experienced Data Scientists have the opportunity to work with stakeholders in a high-pace, agile environment that encourages autonomy and growth create best practices for the technical side of Data Science at SB and drive value into SB in partnership with multiple stakeholders More ❯

The Principal Data Scientist will support Tendo analytics projects focused on quality management and risk adjustment. The person in this role will access data from multiple sources (public and private) and translate it into information that is meaningful and actionable for health systems. The Principal Data Scientist develops, maintains, and enhances predictive models … on experience applying AI or machine learning to real-world problems, and is passionate about exploring how emerging AI capabilities can improve healthcare delivery and outcomes. In addition, the Principal Data Scientist will also have the opportunity to ask novel, data-driven questions and drive new analyses. About Tendo Make an impact-join our team! We … Francisco, CA; San Diego, CA; Salt Lake City, UT; Chicago, IL; Nashville, TN; and Philadelphia, PA. Candidates may be located in any one of our hub locations. Responsibilities Analyze data from multiple databases to drive optimization and improvement of quality outcomes, resource utilization, and risk adjustment. Develop custom data models and algorithms to apply to data sets. 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 ❯

Principal Data Scientist (Hybrid work in London - roughly 1/2 days a week in London) We’re partnered with a well-established, tech-driven company that’s redefining how data science supports product innovation and customer experience across its domain. With a strong focus on automation, personalisation, and intelligent decisioning, this organisation is placing data … moving, high-ownership culture. Their environment encourages experimentation, cross-functional collaboration, and the freedom to shape what “great” looks like in machine learning at scale. The Role As a Principal Data Scientist, you’ll play a pivotal role in shaping the company’s ML capability, both technically and culturally. Working alongside a collaborative data science team … real-time modelling infrastructure. This is a hybrid hands-on/leadership role, ideal for someone who thrives at the intersection of applied research, platform integration, and engineering-minded data science. What You’ll Be Doing Build and deploy a wide variety of models spanning classification, regression, propensity scoring, and LLM-based use cases Spearhead the entire company’s More ❯

Principal Data Scientist (Hybrid work in London - roughly 1/2 days a week in London) We’re partnered with a well-established, tech-driven company that’s redefining how data science supports product innovation and customer experience across its domain. With a strong focus on automation, personalisation, and intelligent decisioning, this organisation is placing data … moving, high-ownership culture. Their environment encourages experimentation, cross-functional collaboration, and the freedom to shape what “great” looks like in machine learning at scale. The Role As a Principal Data Scientist, you’ll play a pivotal role in shaping the company’s ML capability, both technically and culturally. Working alongside a collaborative data science team … real-time modelling infrastructure. This is a hybrid hands-on/leadership role, ideal for someone who thrives at the intersection of applied research, platform integration, and engineering-minded data science. What You’ll Be Doing Build and deploy a wide variety of models spanning classification, regression, propensity scoring, and LLM-based use cases Spearhead the entire company’s More ❯

Job Description - Principal Data Scientist Location: San Francisco, CA (Hybrid: 2-3 days/week in office) Type: Full-Time About Onos Health Onos Health's mission is simple but ambitious: ensure every healthcare dollar goes toward delivering the highest quality care. Today, 30% of total U.S. healthcare spending is wasted due to ineffective care and administrative … burden caused by misalignment between providers and payers. Onos is addressing this by building the largest AI-driven healthcare data platform. Our model enables payers to make faster, more accurate decisions across their populations. By guiding members to the right care, Onos is channeling more dollars to high-quality care that drives outcomes while making healthcare more affordable. Onos … how healthcare is managed in the U.S. Why Onos? Meaningful impact: Help fix what is fundamentally broken in healthcare Direct collaboration: Work alongside experienced founders with deep healthcare and data expertise Culture: Join a high-performing, transparent, and results-oriented team Ownership: Significant responsibility and autonomy from day one Opportunity: Play a pivotal role in building a fast-growing 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 ❯

through to them, you must reach them through the only channel that really moves them: those they know and trust. Applecart's platform uses publicly available or fully permissioned data to map billions of social relationships between nearly every American adult and enable clients to deliver content directly to decision makers and those that matter most to them. We … are hiring a Principal Data Scientist in our NYC office. About the Role: As a Principal Data Scientist on the Research and Insights team, you will collaborate with the VP of Data Science. Your primary focus will be on developing audience measurement metrics for programmatic advertising and social channels, contributing to Applecart's … and evaluating the impact of campaigns. Key responsibilities include building and modeling audience measurement metrics, implementing research for crossplatform audience measurement and predictive products using campaign logs and audience data to optimize audience construction. What You'll Do Develop and implement audience measurement metrics using machine learning algorithms, survey data, publicly available data, and experiments. Design, develop More ❯

Principal Biostatistics Data Scientist About Character Biosciences Character Biosciences is a precision medicine company pioneering targeted therapies for polygenic diseases, with an initial focus on ophthalmology. Our patient data platform integrates genomics with deep, longitudinal clinical and imaging data, enabling us to uncover genetic drivers of disease progression, advance novel therapeutics, and define patient stratification … strategies that improve clinical success. Our interdisciplinary team, comprising experts in clinical science, data science, statistical genetics, computer vision, and drug discovery, utilizes this platform to determine genetic drivers of disease progression, advance novel therapeutics and define genetics-based patient stratification. Powered by our data platform, Character Bio is currently advancing two programs in Dry Age-related Macular … Sciences. We also maintain a multi-target drug discovery collaboration with Bausch + Lomb to develop innovative precision medicines for AMD. The Opportunity We are looking for an experienced data scientist with strong biostatistics expertise to join us as a senior member of our team. You will be leading mission-critical initiatives in which Character's data 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 ❯

team. Thank you for considering Arthur Grand Technologies. We look forward to hearing from you soon. Job Description Arthur Grand Technologies is currently seeking a highly motivated and skilled Principal GenAI Data Scientist for one of our clients. Position: Principal GenAI Data Scientist Duration: Long Term Contract Location: Mclean, VA - Onsite Description Client is … seeking a highly experienced Principal GenAI Data Scientist to lead the design and development of AI agents, agentic workflows, and production GenAI applications that solve real business problems. You'll be a hands-on technical leader who partners with full-stack engineers, designers, product managers, and data engineers to ship secure, reliable, and scalable GenAI solutions. … Atlas, etc.). Proven prompt engineering, fine-tuning, evaluation frameworks, and guardrails/safety implementation. Built and deployed GenAI apps to production (latency, cost, observability, rollback, safety). Strong data engineering fundamentals: ingestion, chunking, enrichment, anonymization, and governance. Required Experience 10+ years in AI/ML with 3+ years focused on applied GenAI/LLM solutions. Prior software engineering 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 ❯

enabled biotechnology company working to make new drugs for patients faster. The company's Opal Computational Platform transforms drug discovery and development through a unique combination of real-world data, AI, human translational models and predictive chemistry. Our talented team of biologists, chemists and engineers, armed with advanced AI/ML tools, work together to break down traditional R … centric innovation. Valo is headquartered in Lexington, MA, with additional offices in New York, NY and Tel Aviv, Israel. To learn more, visit . About the Role As a Principal Epidemiologist and Data Scientist in Epidemiology and Patient Data Products, you will lead groundbreaking research that is revolutionizing drug discovery . Our innovative platform leverages advanced … computational techniques to accelerate the development of new medicines. You will have the opportunity to lead research initiatives and collaborate with a diverse team of experts (data scientists, epidemiologists, and clinicians) to address challenging problems that can have a significant impact on global health. What You'll Do As a senior member of our neurodegenerative disease drug discovery team More ❯

value for clients. We do this by enabling companies to execute on business outcomes across their media investment instead of more traditional media metrics. VideoAmp is the software and data solutions company powering the convergence of linear TV and digital video advertising. Our solutions connect linear TV viewership with addressable data assets to benefit the marketing and media … and measure deduplicated audiences across digital video, OTT, connected and linear TV advertising. Role & Responsibilities Los Angeles, CA or New York City (Hybrid) We are seeking a highly skilled Principal Data Scientist to lead methodology development as part of a team of advertising technology focused data scientists. The ideal candidate will have extensive experience in statistical … modeling, machine learning, and data analysis, with an understanding of advertising technology concepts. You will play a critical role in developing and implementing data-driven strategies, optimizing statistical methods, and driving innovation within the company. Lead the design, development, and deployment of advanced statistical models to optimize advertising campaign measurement and improve planning and targeting accuracy. Collaborate with More ❯

a workplace that represents and celebrates the customers we serve. Learn more about our Total Rewards philosophy . About the Role: Gusto is looking for highly skilled and motivated Data Scientists with extensive experience (10+ years) applying their expertise in a business environment. As a Principal Data Scientist, you will play a crucial role in leveraging … experimentation, statistical inference, and causal analysis to drive strategic decision making that contributes to the overall success of our organization. The ideal candidate is a trusted data storyteller with strong statistical and coding skills, and a passion for applying these skills to help small businesses thrive. In this role you will work closely with our Product, Engineering, Design, Finance … and other Data teams to become an expert in the data for your domain, define and track metrics that help us understand our business performance, and dive deep into our Payroll, Benefits, and HR data to deliver insights and answer questions. You'll also integrate AI-assisted practices to accelerate analysis, enhance rigor, and expand the reach 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 ❯

WHY DATA SCIENCE & ANALYTICS? The Data Science & Analytics organization's mission is to increase our speed, frequency and acumen of making decisions at scale by instilling a data-influenced approach to building products. We cover a wide area of the data spectrum including analytical data engineering, product analytics, experimentation, causal inference, statistical modeling and machine … Aligned and partnering with product verticals, we use this extensive tool belt to discover new opportunities and unmet use cases, influence and shape the product roadmap and prioritization, build data products and measure impact on our community of players and developers. WHY INFRASTRUCTURE? The Core Engine team is missioned to build world-class elastic game engine technology that powers … engaging experiences. We build the core technology that powers our 3D worlds including rendering, simulation, networking and systems. As a Senior Data Scientist, you'll partner with engineers, data scientists, technical program managers, and leaders across the company in our efforts to continually improve the quality and performance of our game engine and the user generated content 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 ❯

WHY DATA SCIENCE & ANALYTICS? The Data Science & Analytics organization's mission is to increase our speed, frequency and acumen of making decisions at scale by instilling a data-influenced approach to building products. We cover a wide area of the data spectrum including analytical data engineering, product analytics, experimentation, causal inference, statistical modeling and machine … Aligned and partnering with product verticals, we use this extensive tool belt to discover new opportunities and unmet use cases, influence and shape the product roadmap and prioritization, build data products and measure impact on our community of players and developers. WHY CORE ENGINE? The Core Engine team is missioned to build world-class elastic game engine technology that … powers engaging experiences. We build the core technology that powers our 3D worlds including rendering, simulation, networking and systems. As a Senior Data Scientist, you'll partner with engineers, data scientists, technical program managers, and leaders across the company in our efforts to improve the quality and performance of our game engine and the user generated content More ❯