Data Modeller

Job Description
Sizewell C. The power of good for Britain.
Data Modeller
Location: Based in London on a hybrid basis, with travel to Suffolk as required.
Contract : Permanent, full-time.
Salary: Competitive dependant on experience, plus benefits
Benefits Include
Annual Leave: 28 days per annum, increasing to 30 days after 5 years of service, plus bank holidays.
Bonus: 5% annual bonus.
Pension Contributions: Defined Contribution Pension Scheme with up to 7.5% employee contribution 15% employer contribution.
Closing Date: Wednesday 24th December 2025.
Sizewell C is entering an exciting phase of growth as we mature into an independent organisation and continue building one of the UK’s largest and most important energy projects. We’re looking for a senior culture specialist who can help shape the organisation we want to become.
This role sits at the heart of our HR function and focuses on creating a company-wide culture that is inclusive, high performing and firmly rooted in nuclear safety. You’ll work closely with the Executive Team, Corporate Strategy, Maturity colleagues and the wider HR community to lead cultural transformation, develop our new employee value proposition, and embed the behaviours that will carry us through decades of delivery.
About The Role
We are looking for a passionate and experienced Data Modeller to join our team at Sizewell C to help unlock the value of our data. In this role, you will work alongside technical experts within our Data Centre of Excellence to design and develop robust data models that underpin a series of high-value data products for SZC and its supply chain. Your work will ensure that project data is structured, consistent, and accessible, enabling informed decision-making across the organisation.
About You
Experience in data modelling across large-scale or highly regulated environments (infrastructure, engineering, energy or similar).
Strong understanding of data architecture principles, data warehousing, and modelling techniques.
Familiarity with Data Modelling tooling (e.g. ERWIN) and Azure data services (including Data Lake and Azure Databricks).
Experience in designing conceptual, logical, and physical data models, to support business intelligence, analytics, and operational systems.
Excellent analytical skills with the ability to simplify complex information structures.
Strong communication and stakeholder engagement skills, able to work with both technical and non-technical audiences.
Relevant degree or equivalent experience in data, computing, engineering, or information management.
Why Join Us?
Be part of one of the most important low-carbon energy projects in the UK.
Work in a mission-driven environment that values innovation, integrity, and long-term sustainability.
Competitive salary, comprehensive benefits, and opportunities for career development.
Flexible and hybrid working options.
Key Competencies
Behavioural Competences
Humility
Recognise the value brought from different cultures and experiences
Be open to other’s points of view and ideas, be willing to debate and to compromise
Positivity
Positively challenge poor quality and performance
Identify solutions at the lowest possible level
Encourage tier 1s and others to bring new ideas forward
Respect
Value the rules and environment in which we operate
Give and receive feedback with respect
Embrace and engage with new people and ideas
Solidarity
One team, working closely together and helping each other
Empowered teams always looking forward.
Shared responsibility for delivery the project outcomes
Clarity
Communicate clearly and consistently
Promote collaboration and team alignment
Clearer and faster decision making
Drive simplification at all levels
If this sounds like the next step in your career, we’d love to hear from you. Apply today.
Additional Information
Join the team at Sizewell C. Our vision is to Lead The Way On Nuclear .
The Sizewell C team is one of the most exciting and largest new megaprojects in the UK, whilst being at the forefront of the UK’s climate change agenda and energy policy. We have begun constructing a 3.2-gigawatt nuclear power station on the Suffolk coast in the East of England replicating, wherever possible, the design used for Hinkley Point C, another nuclear power station being built in Somerset.
When built, Sizewell C will be one of the largest power stations to operate in the UK. The power station will generate low carbon electricity for at least 60 years, supplying over 6 million homes and supporting around 7% of the UK’s current electricity needs.
Our vision is to Lead The Way On Nuclear . We want Sizewell C to define what good leadership for the nuclear industry and British infrastructure looks like and deliver on it. We understand the feats of organisation, logistics, collaboration and imagination that building nuclear requires. We are building for the next generation for their home-grown energy, energy price stability and ultra-low carbon power in abundance. We also want to set the benchmark for maximising long-lasting social value as we build and demonstrate how smart collaboration can work for the benefit of communities – locally, regionally and nationally.
We are the first nuclear power station in the UK to be funded under the Regulated Asset Base funding model (RAB). Our largest shareholder is the UK Government, alongside equity partners La Caisse, Centrica, EDF and Amber Infrastructure.
Sizewell C operates within a complex and fast-moving stakeholder environment, engaging with a wide range of partners including government bodies, regulators, local communities, supply chain partners, and international collaborators. This makes Sizewell C a uniquely stimulating place to work — where navigating evolving priorities, balancing interests, and building trusted relationships is just as critical as technical excellence. For those who thrive in dynamic, multi-dimensional settings, it offers unmatched professional challenge and growth.
When joining Sizewell C, you may wonder why you are contacted by colleagues with an EDF email or see the EDF logo on portals that you access and/or documentation you receive; this is because we have partnered with EDF for the provision of a number of support services whilst we complete a successful transition out of the EDF group.
At Sizewell C we encourage and embrace diversity and how it can improve our experience and performance at work. It is a requirement that those who join us have the right to work in the UK. Whilst sponsorship may be a possibility that we can explore, we are fully committed to local recruitment where possible, and those already holding the right to work in the UK.
To be appointed to this role, you will need to meet the criteria for Security Vetting, which will, ordinarily, require you to have been a resident of the UK for at least three of the past five years.
By submitting an application to this role, you acknowledge that you have read and understood Sizewell C’s employee privacy policy and EDF's employee privacy policy . Just to let you know, EDF will be processing and sharing information about your application on behalf of Sizewell C.

Apply Now

Data Modeller

Job Details