26 to 50 of 63 Senior Data Scientist Jobs in the City of London

Senior Data Scientist Office x4 days a week This is an opportunity to join one of the most innovative firms in the global insurance market, specialising in climate-related parametric risk. Backed by world-leading (re)insurers and operating in over 15 countries, this company merges actuarial science, data science, and cutting-edge technology to address … complex climate risk exposures for corporates and governments. Following a $100M+ Series B and full-stack insurance licensing, they are expanding their London presence. As a Senior Scientist, you’ll operate at the intersection of data, modelling, and market strategy, supporting bespoke coverage for weather-related events. You’ll collaborate with commercial, technical, and research teams to … shape tailored, data-led insurance products for clients worldwide. Key Responsibilities Underwrite parametric insurance policies with a deep understanding of client needs and climate risk exposures Work with brokers and internal teams to structure, price, and deliver bespoke coverage solutions Develop and improve pricing models to monitor risk and portfolio performance Lead client-facing underwriting conversations within the London More ❯

At Synthesis we push the boundaries of what’s possible with Open Data. It’s a fast-paced, rapidly-changing environment at the intersection of data science, cultural analysis & brand consultancy. As a Senior Data Scientist at Synthesis, you will play a key role in shaping our data science practice and driving innovation across both … client projects and internal products. You will lead end-to-end data projects, from shaping datasets and building models to designing scalable data workflows that power the insights and decision frameworks we deliver. You will work with diverse open data sources, ranging from search, social and e-commerce, to academic papers and patents, to understand audience behaviour … and anticipate how needs will evolve over time. In this role, you will not only contribute hands-on but also guide junior data scientists, act as a thought partner to cultural strategists, and help define the roadmap for our data products and infrastructure. We are a small, collaborative team with diverse backgrounds—from computer science and engineering to More ❯

At Synthesis we push the boundaries of what’s possible with Open Data. It’s a fast-paced, rapidly-changing environment at the intersection of data science, cultural analysis & brand consultancy. As a Senior Data Scientist at Synthesis, you will play a key role in shaping our data science practice and driving innovation across both … client projects and internal products. You will lead end-to-end data projects, from shaping datasets and building models to designing scalable data workflows that power the insights and decision frameworks we deliver. You will work with diverse open data sources, ranging from search, social and e-commerce, to academic papers and patents, to understand audience behaviour … and anticipate how needs will evolve over time. In this role, you will not only contribute hands-on but also guide junior data scientists, act as a thought partner to cultural strategists, and help define the roadmap for our data products and infrastructure. We are a small, collaborative team with diverse backgrounds—from computer science and engineering to More ❯

Important To be considered, you must already hold valid SC clearance . 🚀 Contract Opportunity: Senior AI Data Scientist Hybrid: 1 day per week into London office Rate: Up to £750/day (Inside IR35) Contract Length: initial contract until 29/03/2026 Are you a highly skilled AI Data Scientist looking for your … analytics and machine learning solutions that drive real business value. 🔍 What You’ll Do Design, develop, and deploy machine learning models using Azure ML Studio and Python Translate complex data into actionable insights through Power BI dashboards and compelling storytelling Collaborate across teams to deliver secure, scalable, and responsible AI/ML solutions Monitor model performance, manage drift, and … implement retraining strategies Lead the development of AI/ML proof-of-concepts and evaluate their business value 🧠 What You will Bring Extensive experience with Python and data science Python packages (e.g. scikit-learn, pandas, numpy, etc). (LEAD) Understanding of data science concepts, AI/ML models, evaluation approaches, and data science applications to enhance business More ❯

Important To be considered, you must already hold valid SC clearance . 🚀 Contract Opportunity: Senior AI Data Scientist Hybrid: 1 day per week into London office Rate: Up to £750/day (Inside IR35) Contract Length: initial contract until 29/03/2026 Are you a highly skilled AI Data Scientist looking for your … analytics and machine learning solutions that drive real business value. 🔍 What You’ll Do Design, develop, and deploy machine learning models using Azure ML Studio and Python Translate complex data into actionable insights through Power BI dashboards and compelling storytelling Collaborate across teams to deliver secure, scalable, and responsible AI/ML solutions Monitor model performance, manage drift, and … implement retraining strategies Lead the development of AI/ML proof-of-concepts and evaluate their business value 🧠 What You will Bring Extensive experience with Python and data science Python packages (e.g. scikit-learn, pandas, numpy, etc). (LEAD) Understanding of data science concepts, AI/ML models, evaluation approaches, and data science applications to enhance business More ❯

Applied Lead Data Scientist (Innovation Forecasting & Opportunity Analytics) Permanent role, London (Hybrid), 4 days a week (Flexible) Foresight Factory is a consumer prediction consultancy which helps our clients see further. Powered by our platform ‘Collision’ we find the right data and uncover trends that give our clients strategically compelling answers. What we do is deep, smart, and … very commercial. As Lead Data Scientist you will help us build exceptional data processes that turn data signals into essential decision-making intelligence. You will be responsible for designing, testing and executing predictive models across datasets, helping our clients understand trends in consumer and industry data. You’ll be uncovering signals of change, predicting future behaviours … potential growth opportunities and helping our customers decide when to act on them. You will be working in a cross-functional team, alongside data analysts, developers, consultants and non-technical stakeholders, improving and creating internal and external facing data products with your expertise and data-first approach. The role has core responsibilities in data preparation and More ❯

Applied Lead Data Scientist (Innovation Forecasting & Opportunity Analytics) Permanent role, London (Hybrid), 4 days a week (Flexible) Foresight Factory is a consumer prediction consultancy which helps our clients see further. Powered by our platform ‘Collision’ we find the right data and uncover trends that give our clients strategically compelling answers. What we do is deep, smart, and … very commercial. As Lead Data Scientist you will help us build exceptional data processes that turn data signals into essential decision-making intelligence. You will be responsible for designing, testing and executing predictive models across datasets, helping our clients understand trends in consumer and industry data. You’ll be uncovering signals of change, predicting future behaviours … potential growth opportunities and helping our customers decide when to act on them. You will be working in a cross-functional team, alongside data analysts, developers, consultants and non-technical stakeholders, improving and creating internal and external facing data products with your expertise and data-first approach. The role has core responsibilities in data preparation and More ❯

Senior Data Scientist Consultant – London | Hybrid Who I’m looking for You’re an experienced consultant who thrives on solving complex client challenges through data, analytics, and technology. You’re confident operating in ambiguous environments, bringing structure, clarity, and insight to every engagement. You combine deep technical expertise with strong communication skills — able to translate complex … analytical findings into clear, actionable recommendations for clients. You build trust quickly, are commercially aware, and enjoy working at the intersection of data science, strategy, and innovation. You’re equally comfortable presenting to senior stakeholders, mentoring junior team members, or getting hands-on developing prototypes and scalable analytical solutions. What you’ll be doing Leading client engagements as … learning. Translating client challenges into well-defined analytical problems and evidence-based recommendations. Scoping and delivering complex technical projects end-to-end. Designing and implementing cloud-based or hybrid data solutions (AWS, Azure, or GCP). Applying advanced analytical and statistical methods to uncover insights and support decision-making. Writing maintainable, production-quality code (Python or similar) and adhering More ❯

Senior Data Scientist Consultant – London | Hybrid Who I’m looking for You’re an experienced consultant who thrives on solving complex client challenges through data, analytics, and technology. You’re confident operating in ambiguous environments, bringing structure, clarity, and insight to every engagement. You combine deep technical expertise with strong communication skills — able to translate complex … analytical findings into clear, actionable recommendations for clients. You build trust quickly, are commercially aware, and enjoy working at the intersection of data science, strategy, and innovation. You’re equally comfortable presenting to senior stakeholders, mentoring junior team members, or getting hands-on developing prototypes and scalable analytical solutions. What you’ll be doing Leading client engagements as … learning. Translating client challenges into well-defined analytical problems and evidence-based recommendations. Scoping and delivering complex technical projects end-to-end. Designing and implementing cloud-based or hybrid data solutions (AWS, Azure, or GCP). Applying advanced analytical and statistical methods to uncover insights and support decision-making. Writing maintainable, production-quality code (Python or similar) and adhering More ❯

Principal Data Scientist - Financial Services - London/Flexible 2 days a week in the Central London office expected, the rest from home Up to 110k per annum plus excellent benefits and flexibility Principal Data Scientist required for a well-known organisation progressing through exciting transformation and investment in its systems and data. Fantastic opportunity to make … rapidly growing business if you have the following experience & knowledge: Ideally you will have experience leading/mentoring a team, but ideally you will still be a hands-on data scientist, particularly with experience in model validation & setting up risk frameworks. Preferably you will have a background working in the financial services industry , either institutional or regulatory side … scoring and predictive modelling for financial institutions. If you’re interested in finding out more, please apply and your application will be reviewed by Ian Tittley at Investigo! Principal Data Scientist – Financial Services - London/Flexible More ❯

Principal Data Scientist - Financial Services - London/Flexible 2 days a week in the Central London office expected, the rest from home Up to 110k per annum plus excellent benefits and flexibility Principal Data Scientist required for a well-known organisation progressing through exciting transformation and investment in its systems and data. Fantastic opportunity to make … rapidly growing business if you have the following experience & knowledge: Ideally you will have experience leading/mentoring a team, but ideally you will still be a hands-on data scientist, particularly with experience in model validation & setting up risk frameworks. Preferably you will have a background working in the financial services industry , either institutional or regulatory side … scoring and predictive modelling for financial institutions. If you’re interested in finding out more, please apply and your application will be reviewed by Ian Tittley at Investigo! Principal Data Scientist – Financial Services - London/Flexible More ❯

Senior Data Scientist Up to £70,000 Join a fintech platform revolutionising workplace savings and pensions by making sustainable investing simple for both employees and employers. They’re right where finance, tech, and wellbeing meet with backing from a major bank but the feel of fintech innovation. Responsibilities: Advise business leaders on data-driven strategic decisions. … Improve corporate client and individual customer outcomes. Develop and maintain predictive models using data science and machine learning. Build models for customer lifetime value and other key metrics. Continuously refine analytics through iterative improvements. Deploy models into production to enable scalable decision-making. Requirements: MSc in Computer Science, Artificial Intelligence, Mathematics, Statistics or related fields. Experience in Consumer/ More ❯

Senior Data Scientist Up to £80,000 Join a Brand Equity start up that partners with leading CPG and retail brands better understand their market position, optimise marketing spend, and strengthen brand equity through advanced data science techniques. Responsibilities: Responsible for integrating multiple previously disconnected datasets Leveraging advanced techniques in machine learning, natural language processing (NLP … and computer vision Utilise these technologies to uncover novel consumer insights, empowering clients to make data-driven decisions Enhancing understanding of consumer behaviour, market trends, and emerging patterns. Play a key role in standardising AI into a global solution Requirements: MSc in Computer Science, Artificial Intelligence, Mathematics, Statistics or related fields. Experience in Consumer/Marketing Analytics Strong proficiency More ❯

Senior Data Scientist Up to £80,000 Join a Brand Equity start up that partners with leading CPG and retail brands better understand their market position, optimise marketing spend, and strengthen brand equity through advanced data science techniques. Responsibilities: Responsible for integrating multiple previously disconnected datasets Leveraging advanced techniques in machine learning, natural language processing (NLP … and computer vision Utilise these technologies to uncover novel consumer insights, empowering clients to make data-driven decisions Enhancing understanding of consumer behaviour, market trends, and emerging patterns. Play a key role in standardising AI into a global solution Requirements: MSc in Computer Science, Artificial Intelligence, Mathematics, Statistics or related fields. Experience in Consumer/Marketing Analytics Strong proficiency More ❯

Senior 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 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 Help a small team of data scientists on each project, supporting mentorship, quality control, and technical review Collaborate with commercial and More ❯

Senior Data Scientists/Analysts – SC/DV Cleared – (Military/Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start-ups to … hire multiple Senior Data Scientists & Data Analysts . You’ll help deliver secure, high-impact analytics platforms for Defence, National Security, and Government projects. 🌳 Perfect for ex-Forces engineers (RAF, Army, Navy) or civilians who’ve worked in high-trust, high-stakes environments and want to use data science at scale . 🌳 What you’ll do … Build and deploy machine learning models to solve real-world problems. Design data pipelines, analytics APIs, and decision dashboards used by senior stakeholders. Apply modern data science, AI, and big data techniques to defence and security missions. Deliver secure-by-design, production-grade analytics platforms for sensitive environments. Collaborate across engineering, security, and product teams to More ❯

Senior Data Scientists/Analysts – SC/DV Cleared – (Military/Veteran-Friendly) — Multiple Openings 🌳 Location: London (Remote & Hybrid options) 🌳 Employment: Permanent 🌳 Clearance: Current SC or DV required 🌳 Make sense of mission-critical data that actually drives decisions. 🌳 Areti Group is partnering with one of the UK’s fastest-growing Series A-funded tech start-ups to … hire multiple Senior Data Scientists & Data Analysts . You’ll help deliver secure, high-impact analytics platforms for Defence, National Security, and Government projects. 🌳 Perfect for ex-Forces engineers (RAF, Army, Navy) or civilians who’ve worked in high-trust, high-stakes environments and want to use data science at scale . 🌳 What you’ll do … Build and deploy machine learning models to solve real-world problems. Design data pipelines, analytics APIs, and decision dashboards used by senior stakeholders. Apply modern data science, AI, and big data techniques to defence and security missions. Deliver secure-by-design, production-grade analytics platforms for sensitive environments. Collaborate across engineering, security, and product teams to More ❯

Lead Data Scientist London - 3 days a week Up to £125,000 About the Company We’re working with a next-generation private markets firm that is redefining value creation by combining deep industry expertise with advanced AI and data science. This is a unique opportunity to join a company that partners directly with portfolio companies to … drive measurable operational and financial performance—powered by data. They’re now hiring a Lead Data Scientist to lead high-impact analytics and 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 More ❯

Areti is seeking Senior Data Scientists/Data Engineers (Palantir, Python, Data Science) to work for a series A Funded tech start-up business based in the London area a very quick start. YOU MUST BE DV OR SC CLEARED You will be working on a number of large Defence and Government projects and be given … the opportunity to lead a number of high-profile programs. The Data Scientists will apply their technical skillsets and knowledge to solve exciting real-world problems in a small and dynamic company. You will work as part of a dynamic and close-knit team building new and proprietary approaches to solving multiple problems across the industry. The ideal candidates … will have a skillset to include the following: Experience in working as a Data Scientist/Data Engineer A understand of Palantir would be a huge + Experience of completing projects to deadline. Experience in Deep Learning and DL frameworks such as Tensorflow/Pytroch Deploying ML models Good command of Python and use of libraries for More ❯

Areti is seeking Senior Data Scientists/Data Engineers (Palantir, Python, Data Science) to work for a series A Funded tech start-up business based in the London area a very quick start. YOU MUST BE DV OR SC CLEARED You will be working on a number of large Defence and Government projects and be given … the opportunity to lead a number of high-profile programs. The Data Scientists will apply their technical skillsets and knowledge to solve exciting real-world problems in a small and dynamic company. You will work as part of a dynamic and close-knit team building new and proprietary approaches to solving multiple problems across the industry. The ideal candidates … will have a skillset to include the following: Experience in working as a Data Scientist/Data Engineer A understand of Palantir would be a huge + Experience of completing projects to deadline. Experience in Deep Learning and DL frameworks such as Tensorflow/Pytroch Deploying ML models Good command of Python and use of libraries for 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-end ML 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-end ML 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 … 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, you’ll … 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 … 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, you’ll … 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 ❯

Lead Data Scientist | Biotech & Machine Learning | London (3/4 days per week onsite) About Excited to apply advanced machine learning to real-world biomedical discovery? This fast-growing biotech startup is building breakthrough algorithms that extract insight from complex, noisy time-series data - and they’re looking for a Senior Data Scientist to … from research to deployment Flexible working, high autonomy, and a clear scientific mission 🚀 What they value: Curiosity and rigour in tackling complex scientific challenges A passion for transforming noisy data into meaningful insight Strong collaboration across technical and scientific disciplines A mindset focused on reproducibility, clarity, and impact They’re open to a range of ML and scientific backgrounds More ❯