analyst data scientist jobs in County of Cardiff

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 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.

Performance Data Scientist Department - Sport System Institute Services Salary - £41,574.01 (pro rata - £25,281.49) Working Hours - 3 days per week (22.5 hours) 12 months fixed term contract Location - Sport Wales National Centre, Cardiff Closing Date - 6th February 2026 9am Provisional Interview Date - 19th February 2026 Please go to our website to view the full advert and job description and...

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 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 Skills, Experience, Qualifications, If you have the right match for this opportunity, then make sure to apply today. 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,...

Data Analyst Course Programme Job Guarantee Included Complete online training designed to take you from zero experience to your first data analyst role. Study part-time, build fundamental skills, and get dedicated job placement support until you're hired. Flexible financing options available, with payment plans starting from as low as 142 per month. The Programme Complete this 10-week online...

We are looking for an experienced Data Analyst who can bridge the gap between technical data systems and functional business units. This position involves gathering data requirements from various internal stakeholders and translating those needs into specific analysis plans. Responsibilities include auditing existing data pipelines, identifying opportunities for process efficiency improvements,...

Note - role reposted after re-evaluation of grade level. About Colt Data Centre Services Colt Data Centre Services (DCS) has over 20 years’ experience in designing, building and operating energy-efficient, reliable data centres – hosting significant financial, media, corporate and cloud wholesale providers across the world. Our customers are at the heart of everything we do. We endeavour to...

Job Description Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for an expert Biologist (part-time work from home) to help advance AI development. As a member of DataAnnotation’s Biology team, you’ll be part of a growing community of over 100,000 experts who are driving...

Job Description Are you a talented data scientist or pricing analyst, looking for your next career opportunity within a boutique, data-focused provider of GI insurance services? Then look no further! Star Actuarial is currently representing an exciting chance to develop and maintain statistical models to analyse pricing performance and total profitability. Monitoring and analysing competitive...

You should apply if: What we’re doing here at Monzo excites you!

You will have the chance to speak to our recruitment team at various points during your process but if you do have any specific questions or want to talk through reasonable adjustments ahead of or during application please us at any point on tech-hiring@monzo.

?? Senior Credit Risk Analyst - Scorecard Development Specialist ?? Are you an analytical thinker with a passion for building high-performing credit risk solutions? We're looking for a Senior Credit Risk Analyst with strong scorecard development expertise to join our forward-thinking Risk team. This is a fantastic opportunity to take ownership of high-impact modelling projects and influence...

Job Description Do you have experience on motor or travel insurance with strong data analysis skills? Our client, a dynamic and growing international insurance services company, is looking for a Pricing Analyst to join their friendly and collaborative team based in Cardiff. Responsibilities include: - Analyse competitive position, customer behaviour, claims, and profitability to inform...

Job Description �? Senior Credit Risk Analyst - Scorecard Development Specialist �? Are you an analytical thinker with a passion for building high-performing credit risk solutions? We're looking for a Senior Credit Risk Analyst with strong scorecard development expertise to join our forward-thinking Risk team. This is a fantastic opportunity to take ownership of high-impact modelling projects...

Performance Data Scientist Department - Sport System Institute Services Salary - £41,574.01 (pro rata - £25,281.49) Working Hours - 3 days per week (22.5 hours) 12 months fixed term contract Location - Sport Wales National Centre, Cardiff Closing Date - 6th February 2026 9am Provisional Interview Date - 19th February 2026 Please go to our website to view the full advert and job description and...

Data Analyst Course Programme Job Guarantee Included Complete online training designed to take you from zero experience to your first data analyst role. Study part-time, build fundamental skills, and get dedicated job placement support until you're hired. Flexible financing options available, with payment plans starting from as low as 142 per month. The Programme Complete this 10-week online...

?? Senior Credit Risk Analyst - Scorecard Development Specialist ?? Are you an analytical thinker with a passion for building high-performing credit risk solutions? We're looking for a Senior Credit Risk Analyst with strong scorecard development expertise to join our forward-thinking Risk team. This is a fantastic opportunity to take ownership of high-impact modelling projects and influence...

Are you a talented data scientist or pricing analyst, looking for your next career opportunity within a boutique, data-focused provider of GI insurance services? Then look no further! Star Actuarial is currently representing an exciting chance to develop and maintain statistical models to analyse pricing performance and total profitability. Monitoring and analysing competitive position,...

Job DescriptionJoin the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule.We are looking for an expert Physicist (part-time work from home) to help advance AI development. As a member of DataAnnotation’s Physics team, you’ll be part of a growing community of over 100,000 experts who are driving...