Data Engineer
At a glance
Mid-level Data Engineering role at DWR Cymru Cyfyngedig Welsh Water. Cardiff · £42,786–£48,912 base.
dataroles summary, based on the employer's posting.
What you'll do
- Design data solutions across on-premises and cloud environments, meeting architecture and security needs
- Build and support data pipelines, investigating and resolving incidents
- Deliver solutions from data-quality checks and testing through reviews, documentation and team demonstrations
- Work with data teams and technical colleagues, bringing forward new approaches that could benefit the business
What you bring
- Substantial hands-on experience designing and managing data pipelines
- Strong Python and SQL skills, with a sound grasp of database administration and data transformation
- You understand data protection methods, including access controls, encryption or masking
- You can solve problems proactively and explain solutions to data colleagues and stakeholders
Who this fits
This mid-level role suits a data engineer who can work across existing SQL servers and cloud-based platforms while delivering secure, reliable pipelines. The role is hybrid, with office work required once a week, and flexible hours around a ten-to-three core period.
From the employer
Base
Closing Date
Linea (St Mellons, Cardiff) - Hybrid Options
23:59 on 17 August 2026
What you’ll be responsible for
This is an exciting role that will allow you to be integral to the evolution of our cloud-based enterprise data platform. As a Data Engineer, you will be working on technical solutions, whilst supporting our existing set of SQL Servers that are predominantly used to feed data into a number of analytics products. This will help the business with data-led decision making to provide essential public services.
Your responsibilities will include:
- Designing efficient and robust data engineering projects within both on-premises and cloud-based data stacks that add business value and comply with architectural and data security requirements.
- Building, maintaining and supporting data engineering pipelines, with resolution of incidents.
- End-to-end delivery of data engineering solutions, including data quality, testing, peer reviewing, documenting and demonstrating of completed solutions to the team.
- Working closely with teams within data and other technical colleagues across the business.
- Remaining aware of new data engineering approaches, and be able to suggest how the latest research, techniques and approaches could be implemented to achieve business benefit
- Undertaking any other duties as required to meet the needs of the business.
About you
Essential Qualifications, Knowledge and Experience
- Substantial experience of data pipeline design and management
- Enthusiasm to add customer value whilst improving the effectiveness of the data engineering function
- Proactive problem solving and being able to effectively communicate solutions to both the data team, and to stakeholders
- Good understanding of database administration activities and principles
- Data transformation approaches
- Strong Python and SQL programming capabilities
- Data security approaches – e.g. permission models (AD, role-based etc.) and techniques to protect data in certain circumstances (e.g. encryption, masking)
Desirable Qualifications, Knowledge and Experience
- Familiarity with common agile project management principles, particularly in the context of data and analytical project delivery
- Good understanding of typical ingestion patterns (e.g. ETL, ELT) and their effective implementation with on-premises and cloud-based environments
- Knowledge of typical data modelling approaches (e.g. Kimball)
- Experience using the Microsoft data stack (especially Azure Data Lake, Azure Synapse, Azure Data Factory, Databricks)
- Experience of the full software/reporting lifecycle from planning and design through to deployment and maintenance
- Knowledge of the Microsoft BI Stack, including Analysis Services, Integration Services and Reporting Services, and Power BI
- Understanding of DevOps (or other source control technologies) – particularly code repositories and version control, containerisation methodologies, and application deployment practices (CI/CD pipelines)
Good to know
- Hybrid based - requirement for office based work once a week.
- Flexi working around core business hours (10:00 to 15:00), most of the team work 09:00 to 17:00
For an informal discussion about this opportunity, please contact Craig.Hodges@dwrcymru.com quoting the job ID [9006] in the subject line of your email.
Dŵr Cymru Cyf, a limited company registered in Wales No. 2366777. Registered office: Linea, Fortran Road, St. Mellons, Cardiff CF3 0LT
© Dŵr Cymru Cyf 2019.
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