big data developer jobs in County of Cardiff

We are seeking an experienced Indirect Tax Associate Director to join a Big-4 office in Cardiff. This position requires expertise in tax advisory and compliance, coupled with a strategic approach to managing client relationships.Client DetailsThe company is a large organisation within the global accountancy industry, recognised for its expertise in delivering high-quality tax advisory and...

OverviewWe are seeking an experienced Indirect Tax Associate Director to join a Big-4 office in Cardiff. This position requires expertise in tax advisory and compliance, coupled with a strategic approach to managing client relationships. The company is a large organisation within the global accountancy industry, recognised for its expertise in delivering high-quality tax advisory and compliance...

Principal Data Engineer Location: United Kingdom Our Client They are a global content solutions company, powered by technology and human expertise. They help organisations grow the value of their ideas, data, and content by enabling them to be understood - everywhere. With over 45 AI patents, industry-leading technology, and expert talent, they support more than 80 of the world’s top 100...

Our client, a leading provider of secure information solutions to Central Government, Defence, and National Security, is seeking an experienced Data Architect to join their team. This is a high-profile role working on mission-critical projects, delivering innovative, scalable, and secure data platforms. Youll be the go-to expert for data architecture, supporting projects from concept to delivery...

A professional services organisation is seeking an experienced Data Architect to lead the design and evolution of its enterprise data landscape. This is a hands-on role within a data and architecture function, responsible for shaping integration patterns, master data management, and the data warehouse, ensuring data is trusted, well-governed, and fit for analytics and decision-making. Key...

Start: ASAP Location: Cardiff (hybrid – some WFH once trained) A leading organisation is seeking an experienced Data Centre Operator to join their operations team on a long‑term contract. This role is ideal for someone who thrives in a fast‑paced environment, enjoys problem‑solving, and takes pride in keeping critical systems running smoothly. Please note: Control‑M experience is essential....

At Why Hiring, we believe in the power of connecting talented individuals with incredible remote job opportunities. Our mission is to simplify the job search process and empower professionals to find fulfilling roles that align with their skills and passions, regardless of geographical constraints. In this role as a Junior Data Scientist, you’ll collaborate with data experts and various teams...

We’re Hiring: Data Engineer (Agentic AI & MLOps) We’re looking for a Data Engineer with hands-on experience in Agentic AI systems and MLOps to help build scalable data platforms and production-ready AI solutions. What You’ll Do - Build and maintain scalable batch & streaming data pipelines - Enable data infrastructure for Agentic AI / LLM-based autonomous systems - Develop and support MLOps...

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...

Sales Director -Microsoft Data & AI Permanent | Hybrid WFH | Travel to London / Client Sites Required Must be eligible for SC clearance or currently SC Cleared Basic salary + OTE (UNCAPPED) We are looking for an experienced Data & AI Sales Director to lead new business growth across a Microsoft Data & AI portfolio. This is a senior, revenue-driving role for a hunter who thrives on opening...

Senior Data Platform Engineer (Azure | Terraform Expert) Location: Remote / London Office if preferred Type: Contract £750 a day (Inside IR35) - Initial 3 month About the Role We are seeking a Senior Data Platform Engineer with deep, hands-on Terraform expertise to design and build enterprise-grade Azure infrastructure using Infrastructure as Code as a core discipline. This role is not a...

Responsibilities - Design and maintain conceptual, logical, and physical data models for electrical transmission and distribution networks. - Collaborate with EMS/ADMS teams to implement accurate network models using tools like eTerra Habitat. - Develop and optimize SQL queries for relational databases such as Oracle 19C and above. - Create and configure network displays using Display Builder...

We are currently recruiting a Data Engineer for one of our clients. The role is outside IR35 and is paying £400-500 per day, it will initially be for 6 months. It is also fully remote. Key Responsibilities • Design, develop, and maintain batch and streaming data pipelines using Databricks (Apache Spark) • Build and optimize ETL/ELT workflows for large-scale structured and unstructured data •...

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...

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...

A UK-based health and wellbeing organisation is hiring a Data Scientist to build and deploy production ML and GenAI systems. The role is hands-on and end to end, covering data preparation, model development, and deployment across traditional ML and LLM-based use cases. You will work on real production problems rather than research-only work, owning models from first iteration through to live...

Senior Data Engineer | Remote (UK or Europe) A leading prop trading firm is hiring a Senior Data Engineer to take ownership of their trading and market data infrastructure. Operating globally with connectivity to dozens of exchanges, the firm executes millions of trades daily with data playing a mission-critical role in every aspect of the business. This is a high-impact, high-autonomy role in...

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,...

Management Accountant & Data Improvement Manager 12-16 Month Contract [Inside IR35] A very exciting role has been registered with Hays Senior Finance, Cardiff. The role is to implement and improve processes while also taking ownership of management accounts in the team.This role will combine Management accounting responsibility (primarily income). With a significant, project-based piece of work...

A leading leadership consultancy is seeking a Head of Sales based in the UK to lead European sales for data center solutions. This senior leadership role involves building executive relationships, owning revenue targets, and developing go-to-market strategies across key European markets. Ideal candidates will have extensive sales experience in advanced infrastructure solutions and a strong track...