Data Modeller (Sizewell C)

EDF; Sizewell; Hybrid; GBP 60,000 - 65,000; Full time

Benefits offered by this job

5% annual bonus

Pension up to 7.5% / 15% employer

28 days holiday + bank holidays

Flexible benefits

Job summary

EDF is hiring a Data Modeller for Sizewell C to design and develop enterprise data models that enhance accessibility, usability and value. You will work with the Data Architecture Lead to align models with SZC standards and drive informed decision-making.

The role includes creating conceptual, logical and physical models, collaborating with data engineers, documenting data dictionaries and supporting governance across data warehouses and lakes.

Qualifications

• Proven experience as a Data Modeller or similar role.
• Proficiency in SQL and relational/non-relational databases.
• Experience with data warehousing concepts and platforms.
• Knowledge of data Lakehouse architectures and modern data stack tools.
• Understanding of GDPR/HIPAA data privacy.
• Experience with Azure data services and Databricks.
• Familiarity with data governance, metadata management.
• Strong communication and stakeholder management skills.

Responsibilities

• Design conceptual, logical and physical data models to support BI, analytics and operations.
• Collaborate with stakeholders to gather data requirements.
• Translate business needs into scalable data structures.
• Enforce modelling standards, governance and best practices.
• Work with data engineers to implement models in warehouses and data lakes.
• Maintain models as business needs evolve and ensure data quality.
• Document models, metadata and data dictionaries.
• Support data lineage and impact analysis.

Skills

Data modelling

SQL proficiency

Data warehousing

Azure data services

Medallion architecture

Version control

Stakeholder comms

Education

Data modelling certification

Tools

ERwin

ER/Studio

PowerDesigner

SQL DBM

Job description

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The Sizewell C Jobs Service supports local people into exciting, long-term careers across our Project.#SZCJobs

At Sizewell C, we're building more than a nuclear power station—we’re creating a lasting legacy of clean energy and innovation.

To help achieve this, we’re seeking a Data Modeller to design and develop the enterprise-level data models that enhance the data accessibility, usability and value across the organisation. Working alongside Data Architecture Lead, helping to define, build, and deliver data models that align with our strategic business needs and drive informed decision-making.

Contract Type: Permanent - Office-based with hybrid flexibility (typically 3 days p/w in the office)
Working Pattern: Full time
Location: London
Salary: Circa £60,000 - £65,000 depending on experience
Bonus: 5% annual incentive
Pension: Up to 7.5% employee contribution / 15% employer contribution
Holiday: 28 days plus bank holidays
Benefits: Flexible benefits
Closing Date: 22nd October 2026

Impact

As a Data Modeller, you’ll help to design the various layers of data models to align with the SZC standards and principles for all domains and sub-domains within SZC. Work alongside with Integration and Engineering team to ensure all source requirements are captured and support the implementation of data models being created.

As part of your role, you will deliver:

• Design and develop conceptual, logical, and physical data models to support business intelligence, analytics, and operational systems.
• Collaborate with stakeholders to gather and analyse data requirements.
• Translate business requirements into data structures that are efficient, scalable, and maintainable.
• Enforce data modelling standards, best practices, and governance.
• Work with data engineers to implement models in data warehouses, data lakes, and other storage systems.
• Maintain and update data models as business needs evolve.
• Ensure data integrity, quality, and consistency across systems.
• Document data models, metadata, and data dictionaries.
• Support data lineage and impact analysis efforts.
• Conceptual Data Models: High-level models that outline business entities and relationships.
• Logical Data Models: Detailed models that define data elements, attributes, and relationships without considering physical implementation.
• Physical Data Models: Implementation-ready models tailored to specific database technologies, including indexing, partitioning, and storage details. Also ensure that models are aligned to respective layers.
• Meeting notes, requirement gathering documents, and stakeholder feedback summaries.
• Comprehensive documentation of data elements, definitions, data types, and business rules.
• Metadata repositories that support data governance and discovery.

Entity Relationship Diagrams (ERDs)

• Visual representations of data entities and their interrelationships, used for communication with stakeholders and developers for each domain/sub-domain/data products depend on requirements.
• Assessments of how changes in data models affect downstream systems, reports, and processes.
• Contributions to data architecture blueprints and alignment with enterprise data strategies.
• Managed and versioned models stored in tools like ERwin.

Data Mapping Documents

• Mapping between source systems and target models, especially for ETL/ELT processes.
• Mapping between target models and Semantic models.

Documentation of naming conventions, modelling standards, and best practices to ensure consistency across the organization need to be enforced..

Knowledge, Skills, Qualifications & Experience

We’re interested in hearing from candidates who have experience in the following areas:

Technical Skills:

• Experience With different data modelling techniques to define models for different data layers.
• Experience with defining the enterprise/domain/sub-domain data models to ensure the data requirements are translated from business requirements.
• Identify the Operational and Analytical requirements when analysing the data sources and design models with future proof designs.
• Proficiency in designing all levels of data models like Conceptual, Logical and Physical data models.
• Familiarity with Azure data services, including Data Lake and Azure Databricks.
• Understanding of medallion architecture and how to apply it in modern data platform designs.
• Experience with version control of data models.

Leadership & Soft Skills:

• Excellent communication skills, capable of translating technical concepts for non-technical stakeholders and translate non-technical requests to implementation.
• Strong stakeholder management skills, ensuring alignment between business and technical teams.

Qualifications & Experience

• Proven experience as a Data Modeller or in a similar role.
• Proficiency in SQL and understanding of relational and non-relational databases.
• Experience with data warehousing concepts and platforms.
• Excellent analytical and problem-solving skills.
• Strong communication and collaboration abilities.
• Knowledge of data Lakehouse architectures and modern data stack tools.
• Understanding of data privacy regulations (e.g., GDPR, HIPAA).
• Strong knowledge of data modelling tools (e.g., ER/Studio, ERwin, PowerDesigner, SQL DBM).
• Certification in data modelling or data architecture is a plus.
• Experience with cloud platforms ( Azure).
• Familiarity with data governance, data quality, and metadata management.

Why Join Us

• A major infrastructure project with national impact
• Hybrid working with flexibility built in
• Competitive salary, bonus and benefits
• Clear progression and development opportunities
• Supportive, collaborative team environment

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

Why Join Us?

For more than 60 years, nuclear power stations in the UK have been quietly keeping Britain fuelled with massive amounts of home‑grown energy.

Our teams up and down the country are proudly continuing to serve the nation – but they also have an eye on the future.

EDF is leading the UK's nuclear renaissance with the construction of a new nuclear power station at Hinkley Point C and plans for a new power station at Sizewell C in Suffolk.

Nuclear power is the most reliable, low‑carbon energy source currently available to the UK. EDF is playing a key role in the development of nuclear sites, while Hinkley Point C will provide low‑carbon electricity to meet 7% of the UK demand. The project is already making a positive impact on the local and national economy as well as boosting skills and education.

We’re not just building new nuclear power stations. We’re developing careers, upskilling generations and creating thousands of employment and apprenticeship opportunities across a variety of skills areas.

It takes a special kind of person to work in the nuclear energy industry and although we have thousands of them there’s always a need for more.

Our industry has a mind‑boggling range of opportunities and more jobs, and in more places, than you might think. But it’s also an industry which is changing.

We’re a responsible business and proud to be Britain’s biggest generator of zero carbon electricity. With size, age and experience, we believe we can do even more.