Principal Data Scientist jobs in Guildford

You will work on modernizing authentication and login experiences across multiple consumer applications, helping drive growth through high-quality user experience, experimentation, and data-driven decision making. This is a collaborative role, working closely with engineers, product managers, and cross-functional partners in a fast-paced environment.

You will work across a variety of complex analytical problems, owning experimentation end-to-end—even when ideal conditions such as user randomisation or high statistical power are not present.

You will design and build the systems that identify the signals that matter most for visibility, the retrieval and embedding architecture that feeds the models, the ranking and scoring framework that prioritises actions and the evaluation layer that measures how different LLMs behave across queries, surfaces and contexts.

Data Scientist - £70k | Remote / Hybrid | FinTech / Payments We’re working with an established FinTech / Payments business that has been helping customers manage and move money globally for many years. The company builds technology-led products that support low-cost, multi-currency payments and money management, operating across several regulated markets. They’re now investing further in their...

You will work on real production problems rather than research-only work, owning models from first iteration through to live deployment.

You will collaborate closely with other data scientists, data engineers, and DevOps, with the freedom to shape how GenAI and ML are used across the platform.

You will define technical strategy, design scalable data systems, mentor senior engineers, and partner closely with product, engineering, analytics, and business leaders to transform strategic goals into robust, data-driven solutions.

Building Biodiversity Better Step out of the ordinary and shape the future of ecology. At Ecology by Design, we're redefining what it means to be an ecological consultant - blending scientific rigour with creativity, innovation, and a genuine commitment to restoring nature. Here, your expertise isn't boxed in by bureaucracy or lost in endless process. It drives real-world change. If you're a...

The external communications principal engineer will be able to apply their subject matter expertise and domain experience to good systems engineering practices, to support the Engineering Manager (EM) and Delegated Technical Authority (dTA) in delivering external communications systems and products to the submarine build and through-life support programmes. They will provide subject matter...

About Intellias Intellias is a European-founded AI, Data and Software Development company with global delivery capability across Europe, India and Latin America. For more than 20 years, we've empowered our customers to embrace innovation at scale and contributed to the success of the world's leading brands. The company is featured in the Inc 5,000 Europe and IAOP Global Outsourcing...

You will use your technical expertise and stakeholder skills to both support colleagues and develop/own our technical specifications related to our OT products and systems, including site data configuration and signal sequencing.

We are a leading provider of pharmacovigilance analytics software for the pharmaceutical industry, delivering innovative, data-driven solutions that help clients enhance drug safety, regulatory compliance, and operational efficiency. We are seeking a Consulting Technology Project Manager to manage client implementation projects for our Pharmacovigilance SaaS solutions. The ideal candidate...

Reports to: Technology Director / Executive Sponsor Location: Remote with occasional travel to London (2 times a month) Contract: Full-time, permanent Base Salary: £70,000 – £80,000 location and experience dependent + 10% company bonus scheme and sales commission scheme Why This Role Exists Serve Legal is entering a new chapter: evolving beyond compliance auditing into AI enabled,...

Principal Grafana Network Analytics Engineer Edinburgh, UK | Fully Remote (UK-based) Engineering | Cyber Security £95,000 & Benefits Ever wanted your dashboards to actually defend the internet? This role does exactly that. I’m recruiting on behalf of a high-growth cyber security technology company that protects some of the world’s most critical online services from large-scale DDoS and...

You will be instrumental in embedding health and safety into the preconstruction and construction process and ensuring full compliance with CDM15. Responsibilities• Production of relevant CDM documentation and being the go to on CDM H&S matter for the project teams. • Writing pre-construction information reports and compilation of the information pack for tender.

You will be instrumental in embedding health and safety into the preconstruction and construction process and ensuring full compliance with CDM15.

Senior / Principal Transport PlannerAre you an experienced Transport Planner ready to step into a senior role with a respected consultancy? We're supporting a well-established UK development and infrastructure consultancy in their search for a Senior or Principal Transport Planner to join their growing team in Guildford.This is a fantastic opportunity to lead influential transport planning...

You will be representing the company on site visits, client meetings and public consultations.

Principal Petrophysicist - Low Carbon Consulting At GHD we are committed to addressing the world’s biggest challenges in the areas of water, energy and communities. About us We are a global network of multi-disciplinary professionals providing clients with integrated solutions through engineering, environmental, design and construction expertise. Our future-focused, innovative approaches...

Our client, a mission-led consultancy, is looking for an experienced Principal Software Engineer (Java) to join their growing team. They deliver secure, modern software solutions to the UK Government and Defence sectors, enabling clients to build scalable systems and progressive web applications that drive real impact. This is a senior-level opportunity for a hands-on engineer who enjoys leading...

You will be confident advising on regulatory matters and comfortable working across a range of project types and stakeholders.

You will also be motivated by the opportunity to help develop and shape a growing service offering, contributing to best practice and supporting clients through a period of significant industry change.