1 to 25 of 26 Permanent Senior Data Scientist Jobs in the Thames Valley

Senior Data Scientist 📍 Central London - remote first, meet up twice a month 💰 £70,000-£80,000 + 10% bonus ⚒️ Python, Cloud, Independent Model Creation As the Senior Data Scientist , you will play a pivotal role in shaping how data-driven insights inform key commercial decisions across a dynamic and evolving business. You will … have full ownership over independent model ideation/creation, with the immediate focus being to help deliver pricing models (no prior experience needed), utilising guest data, and then will introduce the latest AI features/tools as well as other greenfield models/projects. You'll need experience creating a variety of models. The position offers flexibility, with the … team typically meeting in London twice a month . Applicants across the UK are welcome, provided they can travel to London for these collaborative sessions. The Role As the Senior Data Scientist, you will apply advanced data science techniques to enhance pricing strategies and forecasting accuracy. You will take ownership of developing, implementing and refining variable More ❯

Senior Data Scientist (Full-Stack ML & LLMs) Location: Hybrid - Remote/London (UK) Reporting to: Technical Lead (Senior Data Scientist) About Us We are a high-growth, venture-backed health tech startup on a mission to transform how healthcare assessments are understood and utilized. Founded by health economics academics and backed by leading investors … we are building a novel, data-driven platform that will become the definitive source of intelligence for Health Technology Assessment (HTA) and Market Access (MA) reports globally. This is a rare opportunity to get in on the ground floor and play a pivotal role in shaping the core technology and data foundation of our company. The Role: Build … Deploy, and Innovate We are looking for a Senior Data Scientist who is as passionate about building robust, scalable data systems as they are about innovating with cutting-edge machine learning. You will be the second data science hire, working hand-in-hand with our Technical Lead to architect and execute the data strategy More ❯

Senior Data Scientist Paying up to £85,000 + bonus Hybrid in London AI/ML-Driven PropTech I am currently working with start/scale up within the PropTech sector looking to hire a Data Scientist to work on high-impact predictive modelling projects in a fast-growing company. This role offers the opportunity … to work end-to-end on ML models, helping to revolutionise the property industry by leveraging data-driven insights. As a Data Scientist, you’ll be building and optimising predictive models to understand trends in the property market, such as likelihood of sale and customer retention. You’ll work closely with Data Engineers and Product teams … Be Doing: Developing predictive models to forecast property trends and customer behavior. Leveraging MLOps best practices to ensure efficient model deployment and monitoring. Working end-to-end across the data pipeline – from data extraction to model evaluation. Collaborating with cross-functional teams to turn insights into actionable business decisions. Tech Stack & requirements: Python | SQL | Snowflake | DBT | Tableau | Dataiku More ❯

We are working with Fyxer AI, the UK's fastest-growing tech company in the UK, to hire a Senior Data Scientist. Fyxer are building the Cursor for email. Since launching in May 2024, they have gone from $0 to $20m in ARR and raised a $30m Series B from top investors. Hiring small numbers of exceptional people … Fyxer’s next vital hire is a Senior Data Scientist who will take on ownership of key predictive modelling. Job Description As Fyxer’s Senior Data Scientist, you will not only own the company’s data science and analytics capabilities - you’ll set the roadmap for high-impact business areas like marketing and … retention, implement scalable solutions, and ensure stakeholders use data to make confident commercial decisions. You’ll join a team of 2 Analytics Engineers and a Data Engineer, and will collaborate with the wider engineering team composed of Growth Engineering, Product Engineering, and Product Reliability Engineering. One example of an immediate priority for the Senior Data Scientist More ❯

Senior Data Scientist | Lead Data Scientist | Data Engineering | Machine Learning | Cloud Computing | SC Cleared or Clearable | 2 days a week | £85,000 plus 15% bonus I am currently working with a brilliant consultancy with deep expertise in their field of Data and Cyber Security solutions, predominantly with Central Government organisations but they also … years and as a result they are involved in some of the most challenging yet rewarding large scale technical projects in the country. They are currently looking for a Senior or Lead Data Scientist, this will be a blend of client facing skills aka, the ability to understand business problems, create a novel models/solutions to More ❯

Lead Data Scientist | London | Multiple Sectors 📍 London (Hybrid) 💰 Up to £115,000 + Equity + Private Health Machine Learning | Data Science Libraries | Deep Learning Frameworks | AI I’m currently looking for: 1 x Lead Data Scientist (Financial Services) 1 x Lead Data Scientist (Retail) 1 x Lead Data Scientist (SaaS) Our … client partners with some of the world’s most recognisable brands to deliver innovative, data-driven solutions that transform customer experience, strategy, and performance. From global enterprises to digital-first disruptors, they help businesses harness the power of advanced analytics, machine learning, and AI to stay competitive in a rapidly changing market. If you’re looking for an opportunity … to shape the future of applied AI across exciting industry sectors, this is your chance. ROLES: Lead Data Scientist (Project Lead, Mentoring, Technical Lead) We are seeking Lead Data Scientists to take pivotal roles across a variety of industries. These are senior technical and leadership positions — perfect for people who want to influence the direction of More ❯

Senior 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 … 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 ❯

Senior Data Scientist contract London, hybrid We’re looking for an experienced Senior Data Scientist (contractor) to lead the development of an AI-powered chatbotwithin a dynamic membership ecosystem for iOS and Android. If you're passionate about Generative AI, conversational systems, and scalable tech – this role is for you. What You’ll Be … Ensure solutions are scalable, secure, and deliver a seamless user experience. Collaborate with product stakeholders to align AI strategy with business objectives. Provide mentorship and technical guidance to junior data scientists. Work hands-on in an Agile/Kanban team alongside Backend, Mobile, QA, DevOps, and Business Analysts. What We’re Looking For 5+ years of Data Science More ❯

Senior Data Consultant/Scientist – KPI Dashboarding (Contract) 📍 Hybrid (Remote + 1 day/week in Heathrow) 💰 £800/day (Inside IR35) 🕒 Start Date: Week commencing 17th November 2025 📆 Duration: 8 weeks About the Role Our client is launching a new engineering workstream focused on building a KPI dashboard to support transformation initiatives. They are seeking a … Senior Data Consultant/Scientist for a short-term contract to lead the dashboard development and embed it into an existing programme. Key Responsibilities Design and build KPI dashboards using Power BI or Tableau Integrate backend data sources (Excel and others) into visual outputs Define KPIs, identify data sources, scope dashboard requirements, and iterate with … stakeholders Ensure data quality through modelling, cleaning, and verification Collaborate with engineering teams to understand operational metrics and reporting needs Required Skills Expert-level proficiency in SQL , Power BI , and Tableau Strong experience in data visualisation and dashboarding Solid understanding of data modelling , data cleaning , and data verification Ability to work independently and embed into More ❯

x Senior Data Scientists | London | Financial Services 📍 London (Hybrid) 💰 Up to £100,000 + Equity + Private Health 🧑 💻 Machine Learning | Data Science Libraries | Deep Learning Frameworks | AI Our client partners with some of the world’s leading financial institutions to deliver innovative, data-driven solutions that transform decision-making and operational performance. From major banks and … stay competitive in a rapidly evolving industry. *If you’re looking for an opportunity to shape the future of applied AI in this sector, this is your chance.* ROLE: Senior Data Scientist We’re looking for 3 x Senior Data Scientists to shape solutions, guide project teams, and drive innovation across financial services clients. You … ll set technical direction, design scalable architectures, and ensure delivery of robust, production-ready AI. You’ll also act as a trusted advisor to clients, working closely with senior stakeholders to shape strategy and deliver measurable business outcomes. What You’ll Bring 🔥Deep knowledge of ML/statistical methods (e.g. supervised/unsupervised, Bayesian, time-series). ⚙️Strong Python More ❯

Job Title Senior Data Scientist - CRM Location London – hybrid working (2/3 days in City offices) Salary To c£75,000 negotiable DoE Job Reference J13015 POSITION OVERVIEW We are super excited to be partnering with one of the largest global lifestyle brands at a pivotal stage in their data journey. As they bring CRM … and customer insight capability 'in house' and roll out a new customer data platform, this role will be central to shaping how data science is delivered, working closely with Data Science teams and IT partners to build for the future, not maintain the past. They are looking for a passionate and experienced Senior Data Scientist … and regional marketing teams to align with campaign goals and customer segmentation strategies Own the full ML lifecycle—from model design to deployment and monitoring. Partner with engineering and data teams to ensure scalable solutions. Continuously monitor and improve model performance using data insights and feedback. REQURIED SKILLS & EXPERIENCE Proven experience in machine learning, particularly in recommendation systems More ❯

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 ❯

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 ❯

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 ❯

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 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 ❯

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 ❯

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 ❯

Areti is currently seeking five Senior Data Scientists/Analysts to join one of the UK’s fastest-growing Series A-funded tech startups based in London . This is an exciting opportunity to be part of a dynamic, mission-driven company working on high-impact Defence and Government projects. Extensive training provided – including Palantir – making this a … career-defining role . 🌳🌳🌳 The Role: You will work within a tight-knit, agile team tackling real-world problems using cutting-edge data science and engineering techniques. Key Responsibilities: Develop and deploy machine learning models Solve complex data problems in a big data environment Build scalable data pipelines and APIs Ideal Candidate Will Have: Previous experience … as a Data Scientist or Data Engineer Strong command of Python (including libraries such as scikit-learn, NumPy, matplotlib) Experience in deep learning frameworks such as TensorFlow or PyTorch Knowledge of SQL and relational databases; experience with Big Data environments Familiarity with API development and NoSQL databases Understanding of CI/CD practices , AWS , and GIT More ❯

Lead Data Scientist Initial 6 month Contract | 4 days onsite (London) 1 day remote We currently are looking for a Lead Data Scientist to join an exciting project with our consultancy client. You’ll combine deep energy market expertise with advanced data science and machine learning techniques to design and deliver data-driven trading … quality ML models (Python, ML frameworks, MLOps). Proven experience in utilities, power, or energy trading; familiarity with trading mechanisms and asset classes. Demonstrated ability to lead cross-functional data science projects, mentor peers, and set standards in a collaborative environment. Expertise in time series modelling, back testing, and extracting insights from complex multi-dimensional data. Hands on experience More ❯