Job Description

Data Engineers are responsible for the design, development and delivery of data services and solutions in line with ISO/ICT’s and Sellafield Ltd’s strategic goals. This includes building and managing data pipelines, supporting integration into systems and business processes, and ensuring compliance with data governance, assurance, and quality standards. Role-holders will play a key part in enabling datadriven decision-making across Sellafield Ltd and furthering the digital ambition across the business.

Principal Accountabilities

• Design, develop and continuously improve data pipelines by writing extract, transform, and load (ETL) scripts, and code, and identifying opportunities to maximise speed, scalability, and efficiency.
• Integrate data from different sources, implementing data flows to connect operational systems, data for analytics, and business intelligence (BI) systems. This may include documenting source-totarget mappings, data profiling, and source system analysis.
• Support the build of data streaming systems to realise the benefits of real-time data.
• Build accessible data for analysis by applying data processing techniques, such as cleansing, aggregation, filtering, and enrichment.
• Design, build and test reusable data solutions and services, such as business intelligence reports. This includes reviewing stakeholder requirements, identifying risks, and presenting insights.
• Ensure the design of data solutions and services aligns to architectural and Secure by Design principles, policies, and organisational standards.
• Ensure adherence to appropriate data governance, assurance, compliance, and quality standards. This may include, but is not limited to, participating in the Enterprise Data Governance Board (EDGB), and establishing data quality checks.
• Monitor the performance of data solutions and services and contribute to the implementation of remedies and preventive measures where appropriate.
• Continuously identify areas for improvement in data solutions, services, processes, and standards, such as re-engineering manual data flows to enable scaling and repeatable use.
• Maintain an up-to-date understanding of the latest trends and best practices in data tools, analysis techniques, and data usage, and support their implementation where appropriate.

Authorities & Dimensions

• Data Engineer II has line management responsibility of 1-5 roles.
• Data Engineer II can act as the delegate for the relevant Data and Dev Manager as required.

Essential Skills

• Bachelor’s degree or equivalent qualification or experience in a relevant field, such as computer science, IT, technology, or data analytics.
• Previous experience in data engineering, data science, data management, data integration, data modelling, or data optimisation, or equivalent.
• Strong technical expertise in tools, platforms and services related to data engineering, such as Alteryx, FME, Azure, and AWS.
• Experience of SQL, Oracle, Dataverse, Toad Data modeler, SSIS or complimentary platform(s).
• Strong stakeholder management skills, with the ability to form collaborative relationships.
• Effective communication skills, able to translate complex technical concepts into business language.
• Proficiency in Python and C# or VB.
• Experience using Power BI and DAX for data visualization and self-service Bl.
• Strong analytical skills, able to identify trends, patterns, and areas for improvement.

Desirable Skills

• ITIL Foundation certified, or higher/advanced qualifications, or equivalent.
• Previous experience in a leadership or team management role.
• Membership of the British Computer Society, or other equivalent professional body.
• Understanding of Sellafield Ltd, including its operations and ICT estate or equivalent.

Additional Information

• Open VN
• Number of Vacancies: 1
• Contact/s: Susan Routledge

The interviews for this vacancy are expected to be 26th May 2026.

ASW’s may have the right to apply for internal Sellafield Ltd vacancies. Please note if you are an Agency Supplied Worker you are required to attach evidence of all qualifications obtained to support your application. We require a minimum of A*-C (9-4) GCSE in English Language, Maths & Science/IT or equivalent / higher qualification.

If you choose to apply for this role and your application is shortlisted by the hiring manager, you will be invited to a competency based interview. In the interview, you will be assessed against the below competencies:

Behavioural:
1. Commitment to Nuclear Safety & Security
2. Commitment to the Business
3. Holding Self and Others to Account

Technical:
1. Using IT at work
2. Driving & Facilitating Change

Please see link to the competency framework for further information:
https://slportal.ssa-intra.net/pub/SC001/00027/Competency%20Framework/Forms/AllItems.aspx

If your technical competency is not in the above framework, please refer to the profession’s share point page for further information.

Sellafield Ltd are recognised as a Disability Confident Employer (Level 3). Disability Confident employers offer an interview to disabled applicants that meet the minimum criteria for a vacancy. Sellafield Ltd define the minimum criteria as the ‘essential skills’ which are listed on the vacancy notice. Whilst completing your application form, you will be able to indicate if you wish to be considered under the disability confident scheme. If you would prefer to discuss this directly with us, please contact the GBS Recruitment team on recruitment@sellafieldcloud.co.uk

Please ensure that you save a copy of this advert for future reference if you make an application for this role.

The closing date for this vacancy is 3rd May 2026.