Junior Data Scientist jobs in Cardiff

Performance Data Scientist If you think you are the right match for the following opportunity, apply after reading the complete description. 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...

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 bring significant experience of being an effective contributor in a cross‐functional team and communicating with external stakeholders.

You will collaborate closely with user researchers and product to identify opportunities for where AI can be used, using your extensive knowledge of AI.

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.

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...

Job Description This role is ideal for an individual at an early stage of their estimating career who is looking to develop strong commercial and technical skills within a structured and supportive environment. The Junior Estimator will work closely with senior estimators, commercial managers and operational teams, gaining hands-on experience across the full estimating and tendering...

Job Summary Aviation. It connects our world, brings people together, provides opportunities, accelerates economic growth, and is just so very cool! Come work for NAVBLUE, a leading services company owned by Airbus, dedicated to Flight Operations, Air Traffic Management solutions and services for airlines, airports, and Air Navigation Service Providers. We combine aircraft manufacturer expertise,...

🚀 Inside Channel Account Manager (German Speaker) – Step Up Your Sales Career with Adobe! Location: Bournemouth, UK (Hybrid) | Salary: OTE: £43000 | Language: German At EIMS Global Ltd, we’re the sales growth engine behind the world’s biggest tech brands – from Adobe and SAP to Dell and HP. We exist to help global technology leaders scale smarter, sell faster, and expand their market share...

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.

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,...

Database Engineer (PostgreSQL & Python) - MUST BE BASED IN THE UK - Opportunity for a Database Engineer (Junior/Mid/Senior) to join a remote-first, UK-headquartered technology business - Competitive salary between £45,000 - £70,000 + excellent benefits including remote working, autonomy, and the chance to work on an Educational AI platform - Apply online or contact Chelsea Hackett via...

This role is ideal for an individual at an early stage of their estimating career who is looking to develop strong commercial and technical skills within a structured and supportive environment. The Junior Estimator will work closely with senior estimators, commercial managers and operational teams, gaining hands-on experience across the full estimating and tendering lifecycle. Key...

You will also be responsible for the following; - Developing the approach for sustainability across significant portfolios and major frameworks. - Increase WSP's profile in the industry, help secure new work and improve the quality and technical knowledge relating to Sustainable design.

You will also be responsible for the following; - Developing the approach for sustainability across significant portfolios and major frameworks. - Increase WSP's profile in the industry, help secure new work and improve the quality and technical knowledge relating to Sustainable design.

You will also have the reassurance of a job guarantee within 20 miles of your location upon completion.

You will begin your data science journey by studying a selection of industry-recognized courses that will take you from beginner level all the way through to being qualified to work in a junior Data Scientist role.

Are you a part-qualified accountant looking to take the next step in your career? Do you have a natural analytical mindset and a passion for data-driven decision making? We're working with a leading global firm seeking a Commercial Finance Analyst to join their Cardiff-based team on a hybrid basis. What you'll be doing: Supporting commercial finance activities across the business Preparing...

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? Read the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required. Then look no further! Star Actuarial is currently representing an exciting chance to...

You should apply if: What we’re doing here at Monzo excites you! - You have a multiple year track record of excellence leading the technical work of a team in the development and deployment of advanced Machine Learning models tackling real business problems, preferably in a fast moving tech company

A major media corporation is seeking a Principal Data Scientist to join their Content Creation AI team. The successful candidate will work closely with journalists and editors, using data science to enhance content production and curation. This role requires proficiency in Python, a deep understanding of machine learning techniques, and the ability to work effectively in a cross-functional team....

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 ahead of this please contact us on tech-hiring@monzo.