Controls Assistant

Controls Assistant

Location:

Sizewell C, Leiston Suffolk (onsite 5 days per week).

Contract:

Permanent, full-time

Salary: £31.000 per annum, plus benefits

• Annual Leave: 28 days per annum, increasing to 30 days after 5 years of service, plus bank holidays.
• Bonus:
  Up to 5% annual bonus.
• Pension Contributions:
  Defined Contribution Pension Scheme with up to 7.5% employee contribution
  -15% employer contribution.
• Flexible Benefits:
  Additional allowance for a variety of benefits.

Closing Date:
Friday 27th February 2026

Sizewell C is one of the UK’s most significant infrastructure projects, delivering low‑carbon energy for generations. Joining us means contributing to a project of national importance, supporting energy security, regional growth, and long‑term skilled employment.

As a Controls Assistant, you will support the Site Operations team by ensuring the accuracy, integrity, and effectiveness of digital reporting. You’ll work within a collaborative, multi‑disciplinary environment and play a key role in maintaining high‑quality project controls information.

• Scope management
• Planning support
• Cost tracking
• Change control
• Risk management
• Reporting and data accuracy

• An inquisitive mindset with a willingness to learn
• Proficiency in MS Excel
• MS Power Point
• MS Word
• MS Outlook

• Power Query
• GIS mapping
• Power BI
• Understanding of data structures
• Knowledge of the nuclear construction industry
• CSCS card

• 5 GCSEs (or equivalent), including Maths and English

• Degree in Business Intelligence, Computer Science, or a related field

Be part of a major national infrastructure programme, develop your career with industry‑leading systems and contribute to the UK's long‑term energy future.

Be part of something extraordinary. Apply today.

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 mega projects 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 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…