Lead Data Scientist at Valtech | London

Role overview Wise seeks a Lead Data Scientist for the Trust and Safety team in London. The main focus is protecting the platform and its users by applying advanced analytics to financial security challenges. This position involves tackling real-world risks and helping to keep Wise’s services safe for everyone. What you will do Analyze large and complex data sets to identify trends and detect suspicious activity Develop and improve models that reduce risk and prevent fraud Collaborate with stakeholders to guide strategic decisions through data-driven insights Shape new methods to strengthen platform security and build user trust Impact The work in this role directly supports Wise’s goal of making money transfers seamless and secure. Efforts here influence how Wise protects its customers and upholds the integrity of its services.

We are seeking a highly skilled and innovative Lead Data Scientist to join our dynamic team at Faculty. In this role, you will leverage your expertise in advanced analytics and machine learning to drive impactful data-driven solutions. You will lead a team of talented data scientists, guiding them in the development of predictive models and analytical frameworks that support our mission to optimize outcomes across various sectors.

About ZegoAt Zego, we believe that traditional motor insurance can be a barrier for exemplary drivers. It's often too complex, costly, and fails to accurately reflect real driving behavior.Since our inception in 2016, we've dedicated ourselves to transforming the insurance landscape. Our goal is to provide the most affordable insurance options for responsible drivers.Our diverse clientele, ranging from van drivers and gig economy workers to everyday car owners, is at the core of our operations.Having successfully sold tens of millions of policies and secured over $200 million in funding, we are just getting started on this exciting journey.Your RoleWe are in search of a Lead Data Scientist to join our Core Pricing team, reporting directly to the Head of Data Science. You will play a critical role in shaping and executing a high-performance data-science operating model, swiftly transforming concepts into production-ready pricing and risk models.Key ResponsibilitiesLead the development and enhancement of next-generation risk models, managing all aspects from innovative feature discovery and sophisticated modeling to dependable pipeline deployment and strategic R&D initiatives.Implement a robust Data Science workflow: ensuring clear guidelines, templates, and documentation throughout the project lifecycle.Accelerate the idea-to-production timeline: from initial data acquisition to live rate adjustments.Promote a culture of collaborative experimentation: integrating Pricing, Data Science, Machine Learning Engineering, and Systems Engineering.Team leadership and mentorship: oversee a team of 2 Data Scientists, guiding their professional growth and development.Establish coding standards and best practices, mapping common processes and creating playbooks.Assist in selecting tools utilized throughout the Data Science project lifecycle.

Are you passionate about data and eager to drive innovation? Join Hudl as a Lead Data Scientist and take the reins in shaping data-driven strategies. In this role, you will leverage advanced analytics to enhance performance across various teams and projects, while mentoring junior data scientists to foster their growth.

Join Us in Empowering the UK’s Small Businesses At Funding Circle, we believe that small businesses are the backbone of the economy. Our innovative platform accelerates access to funding, allowing businesses to secure the capital they need in just minutes.We blend the agility of a fintech start-up with the security of a public company, empowering our team members—affectionately known as Circlers—to take ownership and drive impactful outcomes.Our high-performing culture is built on collaboration and support. We challenge one another, uplift our peers, and thrive as a united force to achieve meaningful results.Real Impact: Last year, the companies on our platform contributed £7.2bn to the UK economy Come join a mission that truly matters![View Our Impact Report] | [Check Our Trustpilot]The Role London (Hybrid) | 3 Days in the Office | Competitive Salary + BenefitsWe are seeking a Senior (Lead) Data Scientist to join our team as we innovate and refine our next generation of models. Your contributions will be crucial in developing, implementing, and monitoring these models to create substantial value for the business.As a member of the Decision Science team, you will engineer advanced statistical and machine learning models while collaborating with data engineers, analysts, and business stakeholders. You will enhance existing models and have the opportunity to create entirely new models as we expand our borrower products.Develop innovative statistical and machine learning models for commercial lending productsMaintain a strong focus on delivering tangible business outcomes and proactively challenge established normsProvide technical mentorship and guidance to junior team members throughout the model development processAdvise the team on best practices for risk managementOversee the experimentation framework for optimizing models

We are seeking a strategic and results-oriented Director of Trust & Safety Operations to spearhead Bolt's global Ride Hailing Trust & Safety initiatives. This pivotal role merges strategic foresight with effective operational execution, ensuring that Bolt delivers the utmost safety and trust for millions of riders and drivers across various markets.As the global custodian of our Trust & Safety standards, you will collaboratively develop and implement our frameworks, policies, and interventions that encompass incident response, risk management, safety compliance, fraud prevention, and user trust initiatives. Your efforts will ensure that our global programs are aligned with market realities, executed with precision, and refined continuously for sustainable impact.In partnership with central teams—including Product & Engineering, Public Policy, Risk, Legal, Marketing, and Finance—you will help shape and execute exceptional Trust & Safety strategies tailored specifically for the Ride Hailing sector. Additionally, you will engage closely with regional and local operations teams to ensure cohesive and effective implementation.As the primary owner of global Trust & Safety KPIs, you will protect our platform's integrity, mitigate risk exposure, and establish scalable operational processes to proactively tackle emerging challenges. You will also lead and nurture a global team of program leaders and operations specialists, cultivating an inclusive and high-performance culture where individuals are empowered, supported, and encouraged to develop their talents.This leadership position is ideal for an individual who excels in dynamic global environments, fosters strong cross-functional partnerships, and is driven by the mission of enhancing safety on our platform.

Why Join Faculty?Founded in 2014, Faculty has consistently believed in the transformative power of AI as a pivotal technology of our era. With a robust portfolio of over 350 global clients, we have successfully driven significant performance improvements through our human-centric AI solutions. Discover the tangible impact we've made here.We prioritize innovation over fleeting trends, focusing on the responsible development and deployment of AI that truly delivers results. Our expertise spans technical, product, and delivery domains, enabling us to support clients across diverse sectors including government, finance, retail, energy, life sciences, and defense.As our reputation and business continue to grow, we seek individuals who share our intellectual curiosity and commitment to leveraging technology for a positive legacy.Join us at Faculty, where you will have the autonomy to explore and implement the most impactful applications of AI.About Our TeamWithin our Professional and Financial Services unit, we leverage over a decade of applied AI experience to assist our clients in navigating a rapidly evolving landscape. We design and integrate AI solutions that enhance efficiency, improve customer experience, and uncover business opportunities in uncertain markets. Operating within a highly regulated environment, we are dedicated to setting the benchmark for technical excellence and safe deployment.#LI-PRIOAbout the RoleAs a Lead Data Scientist, you will play a crucial and entrepreneurial role, acting as the technical authority who excels at navigating complexity and generating commercial impact. You will define the technical strategy and ensure the high-quality, scalable execution of our most demanding, high-impact projects.This role requires a blend of profound machine learning expertise and strategic oversight to outline project roadmaps, manage technical risks, and design robust solutions. You will focus on fostering innovation, mentoring cross-functional teams, and actively influencing both our technical frameworks and enduring client relationships.

Why Join Faculty?Founded in 2014, Faculty has established itself as a leader in harnessing the transformative power of AI, collaborating with over 350 global clients to enhance their performance through human-centric AI solutions. Discover our real-world impact here.We prioritize innovation over hype cycles, focusing on deploying responsible AI that genuinely makes a difference. Our extensive technical, product, and implementation expertise serves clients across diverse sectors including government, finance, retail, energy, life sciences, and defense.As our business continues to grow rapidly, we seek individuals who share our intellectual curiosity and commitment to leveraging technology for a positive legacy.Join us in shaping the future of AI—empower yourself to explore its most impactful applications and bring them to life.About Our TeamThe Faculty Frontier TM product embodies our ambitious vision to create an enterprise-grade platform that integrates decision intelligence with AI Agents, optimizing critical processes for large-scale organizations. You will tackle complex, high-stakes challenges, particularly in healthcare and life sciences.About This RoleAs the Lead Data Scientist, you will define the technical direction of our flagship Frontier product. Leading project teams, you will design and develop custom computational twins—AI-powered digital twins that revolutionize client decision-making. This position requires a strong technical vision in data science, fostering direct client partnerships, and mentoring emerging data science talent. Seize this pivotal opportunity to spearhead innovative, high-impact AI implementations.Your Responsibilities:Direct the technical execution of Frontier deployments, from initial discovery to production integration of computational twins.Oversee the comprehensive data science strategy, including the design and application of optimal methodologies ranging from exploratory data analysis to deep learning.Collaborate with the commercial team to ensure alignment on project objectives and client expectations.

About UsCarnall Farrar is a premier consultancy dedicated to creating a lasting impact on health and healthcare. Our mission is to collaborate with industry leaders and frontline teams to enhance health outcomes, revolutionize healthcare processes, promote innovation adoption, and generate value through strategic investments.We cater to the entire healthcare ecosystem, encompassing payors, providers, life science companies, health tech, suppliers, and health investors. Our comprehensive service offering spans from strategic planning to implementation, leveraging data, digital advancements, and AI technologies.By producing evidence-based thought leadership, we address critical challenges within health. Our unparalleled proficiency in accessing and utilizing health data empowers our consultants to effectuate significant and positive transformations.Our Strategic IntentWe aspire to lead the consulting domain in health, serving healthcare systems, life sciences, health technology, and the broader supplier landscape. Our end-to-end services facilitate organizations in enhancing population health and healthcare outcomes through strategy, transformation, finance, performance enhancement, and data-driven delivery.Our adeptness in data application is a cornerstone of our consulting work. We are acknowledged for our responsible use of health data to improve healthcare delivery, support innovation, generate evidence, and inform strategic decisions. Our engineering and data science capabilities are integral to our consulting services and are often deployed in collaboration with clients as part of multidisciplinary teams.We are cultivating a community of expert consultants eager to operate at the forefront of the profession and share a commitment to health. Our structured career development programs, ranging from Analyst to Partner, are supported by mentorship, apprenticeship, and formal training, fostering the leaders of tomorrow and enabling individuals to develop specialized expertise that delivers value to our clients.Our MissionOur goal is to be indispensable to our clients, aiding them in innovating and achieving lasting improvements while building an outstanding organization that attracts, nurtures, and retains a uniquely talented and trusted team.Role SummaryThe Lead Data Scientist will be pivotal in driving our data innovation initiatives, leveraging advanced analytics and machine learning techniques to generate actionable insights that support healthcare improvement.

Why Choose Rogo?At Rogo, we are pioneering the development of Wall Street's first genuine AI analyst. Our mission is to equip finance professionals at leading investment banks, private equity firms, and investment institutions with AI that provides unmatched speed, precision, and insights. We are not merely enhancing financial workflows; we are fundamentally redefining them.This represents a unique opportunity to join an innovative company at a pivotal moment. With a rapidly expanding client base, validated product-market fit, and support from top-tier investors, we are scaling swiftly and establishing a new category in enterprise AI.Our team is intelligent, driven, and passionately dedicated to our mission. We operate with intensity, take ownership of complex challenges, and maintain a relentless focus on our users. If you excel in a fast-paced environment, strive for excellence, and wish to contribute to the future of finance, we welcome you to join us.Role OverviewWe are seeking a Customer Trust Lead to spearhead our customer trust initiatives, security assurance, and compliance programs as we expand globally. You will be the go-to person for providing clear, accurate, and timely answers to our customers regarding our security posture.This is a hands-on, high-responsibility role where you will engage directly with customers. You will lead security review discussions, navigate due diligence processes, and cultivate trusted relationships with enterprise security and risk teams. In addition, you will work on security questionnaires, customer risk evaluations, and due diligence assessments, while developing processes and documentation to enable scalability. Your collaboration with Security, Engineering, Legal, and Sales will ensure alignment between our communications and actions, driving continuous improvement.Your ResponsibilitiesEngage with customers on security matters. Lead discussions with enterprise security and risk teams, articulate Rogo's security framework, and foster the trusted relationships that give customers the assurance to proceed.Oversee the complete lifecycle of customer security questionnaires, due diligence evaluations, and third-party risk assessments, ensuring that every response is precise, consistent, and enhances customer confidence in Rogo.Develop Rogo's response library. Create standardized answers, evidence packages, and reusable content to expedite future reviews.Ensure compliance with relevant frameworks applicable to our customers and jurisdictions, including SOC 2, ISO 27001, ISO 42001, EU AI Act, and UK Cyber Essentials.

About the TeamAt OpenAI, our User Operations team plays a crucial role in protecting our products and users from abuse, fraud, and safety risks. As a vital component of the company’s frontline safety infrastructure, we ensure that real-world user experiences result in timely, high-integrity decisions and sustainable improvements. Our team operates at the crossroads of operations, user trust, and risk management, working collaboratively with departments across Legal, Policy, Engineering, and Product, as well as external partners.We support a diverse and global user base spanning OpenAI’s product suite by effectively managing sensitive inbound tickets, high-severity escalations, and operational risk workflows. Our work is grounded in sound judgment, user trust, and a commitment to creating reliable systems that can scale.About the RoleWe are looking for a highly analytical, adaptable, and technically skilled Operations Analyst to help enhance and scale our user safety and risk operations—focusing on complex, time-sensitive issues where making the right decision can significantly impact users and the business.In this position, you will be at the forefront of user safety: identifying and evaluating high-impact risks that emerge during real-world product usage and driving their resolution in collaboration with teams across the organization. You will transform ambiguous signals into actionable insights—enhancing our immediate response mechanisms while also fortifying the systems (processes, documentation, and automation) that facilitate consistent, high-quality decisions at scale. This role offers a high degree of autonomy and a clear impact: you will manage workstreams from start to finish and assess success through quicker response times, improved outcomes, and minimized risk.Location / work model: London (hybrid, 3 days/week in-office).Please note: This role may involve exposure to sensitive or concerning content. Strong discretion, good judgment, and resilience are essential.In This Role, You WillTriage and resolve intricate, high-sensitivity user issues and escalations, encompassing trust & safety incidents and other urgent risk reviews.Conduct thorough risk evaluations and investigations utilizing internal tools, operational documentation, and relevant external resources when necessary.Act as an incident manager for sensitive reviews that demand nuanced interpretation, decisive action, and strong cross-functional coordination.Collaborate with stakeholders across the organization to drive improvements and share insights.

About LendableLendable is dedicated to creating the finest technology to empower individuals in obtaining credit and managing their finances effectively. We are rapidly establishing ourselves as a leader in the fintech sector with significant momentum:Recognized as one of the UK’s newest unicorns, our team comprises over 700 talented professionals.Ranked among the fastest-growing tech companies in the UK.Achieved profitability since 2017.Supported by premier investors, including Balderton Capital and Goldman Sachs.Praised by our customers, with exceptional ratings (4.9 based on thousands of reviews on Trustpilot).To date, we have reimagined the three primary consumer finance products: loans, credit cards, and car finance. Our goal is to provide funds to our customers within minutes rather than days.As we continue to grow, we are targeting the two largest Western markets (the UK and US), where substantial financial assets are managed by large banks with outdated systems and cumbersome processes.Join Us If You Want ToTake ownership of significant responsibilities. From day one, you will have the autonomy to make decisions that significantly influence Lendable's trajectory and success.Collaborate with small teams of exceptional individuals who are resourceful in solving challenges and discovering innovative solutions.Develop top-tier technology internally, leveraging new data sources, machine learning, and AI to minimize manual workloads.About the RoleWe are in search of an accomplished Lead Product Data Scientist to spearhead product analytics for our rapidly evolving multi-product application. In this influential role, you will be instrumental in deriving insights that enhance our Zable app, utilized by over 1 million customers on both iOS and Android platforms. Your insights will have a direct impact on product strategy and enhance the core user experience.

Role overview The Lead Data Scientist for Fraud Prevention at Wise plays a key role in safeguarding the platform against fraudulent activity. Based in London, this position involves guiding a team of data scientists while working directly with large, complex data sets to spot patterns and potential risks. What you will do Lead a team focused on detecting and preventing fraud across Wise’s platform Analyze complex data to uncover suspicious trends and behaviors Build and improve predictive models that identify fraudulent activity Introduce and implement new approaches to enhance Wise’s fraud prevention systems

Role overview Marshmallow is looking for a Lead Pricing Data Scientist based in London. The position centers on building pricing strategies and applying data analytics to guide business choices. In this role, efforts will shape pricing models and have a direct impact on how Marshmallow competes in the market. The work supports key decisions that affect both immediate pricing and the company's long-term approach. Key responsibilities Develop pricing strategies informed by data analysis Use analytics to support business decision-making Influence and improve pricing models for market competitiveness Location This position is based in London.

Join the Applied Foundations team at OpenAI, where we are committed to not only revolutionizing technology but also safeguarding it against a wide array of adversarial threats. Our mission is to uphold the integrity of our platforms as they expand. We are at the forefront of defending against financial abuse, scaled attacks, and other forms of misuse that could compromise user experience or operational stability.The Integrity pillar within Applied Foundations is charged with overseeing the systems that identify and address harmful activities on OpenAI’s platforms. As we enhance our capabilities to tackle some of the most pressing usage harms, we are seeking experienced data scientists to robustly measure the prevalence of these issues and evaluate the effectiveness of our responses.About the RoleWe are looking for seasoned trust and safety data scientists to enhance, operationalize, and monitor measurements for intricate actor- and network-level harms. In this role, you will take ownership of measurement and metrics across various established harm verticals, including estimating the prevalence of on-platform (and occasionally off-platform) harm, as well as analyses to uncover gaps and opportunities in our responses.This position is based in our London office and may require addressing urgent escalations outside of standard working hours. Some areas of concern may involve sensitive content, including sexual, violent, or otherwise disturbing material.In this role, you will:Take charge of measurement and quantitative analysis for a range of significant actor- and network-based usage harm verticals.Design and implement AI-first methods for prevalence measurement and other safety metrics, potentially utilizing off-platform indicators or non-traditional datasets.Develop metrics suitable for goal-setting or A/B tests when standard top-line metrics are inadequate.Manage dashboards and metrics reporting for harm verticals.Perform analyses and generate insights that drive improvements in review, detection, or enforcement, influencing strategic roadmaps.Optimize LLM prompts for the purpose of measurement.Collaborate with other safety teams to grasp key safety concerns and formulate relevant policies to support safety objectives.Engage in additional duties as required to ensure the integrity and safety of OpenAI’s platforms.

Are you a passionate data scientist looking to make a significant impact in a dynamic environment? Join Marshmallow as a Staff Data Scientist and leverage your expertise to drive innovative data solutions. In this role, you will work closely with cross-functional teams to analyze complex datasets, develop predictive models, and provide actionable insights that enhance our product offerings.

Join Almedia as a Data Scientist, where you will play a crucial role in transforming data into actionable insights. Collaborate with cross-functional teams to analyze complex datasets, develop predictive models, and support data-driven decision-making.

Join our dynamic team at Axle Careers as a Data Scientist, where you will leverage your analytical skills to extract meaningful insights from complex datasets. You will collaborate with cross-functional teams to develop innovative data-driven solutions that enhance business performance and drive strategic decision-making.

Why Join Faculty?Founded in 2014, Faculty believes that artificial intelligence is the defining technology of our era. We have partnered with over 350 clients globally to revolutionize their operations through human-centered AI. Discover our tangible impacts here.We prioritize innovation over trends, developing and implementing responsible AI solutions that drive significant results. Our expertise spans technical, product, and delivery domains, serving clients in government, finance, retail, energy, life sciences, and defense sectors.As our company and reputation rapidly expand, we seek individuals who possess intellectual curiosity and aim to forge a positive technological legacy.Join us and explore the transformative potential of AI, empowered to realize its most impactful applications.About Our TeamOur Retail and Consumer specialists are committed to assisting clients in an industry undergoing rapid technological advancements and shifting consumer expectations. With over a decade of experience in Applied AI, we merge exceptional technical skills with delivery expertise, empowering businesses to adapt and excel.About the RoleIn the role of Lead Data Scientist, you will take on a crucial, entrepreneurial position as a technical expert who excels in navigating complexity and driving commercial impact. You will set the technical vision and guarantee the effective, scalable delivery of our most challenging, high-stakes projects. This role combines profound machine learning knowledge with strategic oversight, allowing you to define project roadmaps, manage technical risks, and architect dependable solutions. Your mission will be to spur innovation, mentor cross-functional teams, and actively influence our technical standards and long-term client relationships.Your Responsibilities:Establishing the technical direction for intricate, business-critical projects while adeptly managing trade-offs between speed, innovation, and reliability.Designing and executing robust, production-ready technical solutions.