Sizewell C’s business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk. Overall, whilst the Company is in the construction phase, the Boards’ principal focus is on the development and construction of Sizewell C on time, on budget and to the highest quality and safety standards. The Company is maturing to meet all these requirements.

Sizewell C is economically regulated by OFGEM under the RAB model similar to other UK electricity distribution networks and Thames Tideway.

Sizewell C construction strategy is to replicate the design of Hinkley Point C, using the majority of the same supply chain, but innovating in the way it is delivered to achieve savings in time and cost of around 20%. The CCO will need to be guided by and incorporate lessons learned from the Hinkley Point C commercial delivery to achieve Sizewell C’s ambition.

Following Financial Completion and Revenue Commencement, Sizewell C is fully funded and is owned by; The Secretary of State for Energy Security and Net Zero representing HM Government, La Caisse, Centrica, EDF and Amber Infrastructure.

People Business Partner

Location: Suffolk, Sizewell C site or Orwell Logistics Park minimum 3 days a week in the office + occasional travel as and when required

Contract: Full time, Permanent

Salary: £59,000 to £65,000 depending on experience + bonus + benefits including:

• Up to 5% annual bonus.
• 28 days’ annual leave, increasing to 30 days after five years of service, plus bank holidays.
• Opportunity to purchase extra holiday.
• Defined Contribution Pension Scheme with up to 7.5% employee contribution and 15% employer contribution.
• Access to benefits portal offering a range of health, financial wellbeing and lifestyle options.

Closing date: Thursday 29th of October 2026

Please note: We reserve the right to close this vacancy early should we receive a high volume of suitable applications, so we encourage you to apply as soon as possible.

The Opportunity

Are you an experienced HR professional who thrives in a complex, fast paced organisation and knows how to build credibility with leaders across different areas of a business?

We’re looking for a People Business Partner to join the People team at Sizewell C, providing hands on, commercially focused people support across a growing and complex organisation.

This isn’t a role where you’ll support one neat, standalone area. We’re looking for someone comfortable working across multiple business areas, navigating matrix structures and managing relationships with a range of leaders and stakeholders. You’ll need a strong HR generalist background combined with the confidence to coach, influence and positively challenge managers when needed.

The role will partner with designated leaders, translating people plans into practical action and providing professional advice, commercial people solutions and operational support. You’ll work across areas including organisational change, performance, talent, resourcing, employee relations, reward and people development.

Why join Sizewell C?

Sizewell C is one of Britain’s major infrastructure projects, with plans to design, finance, construct, commission and ultimately operate a new nuclear power station and its associated infrastructure in Suffolk.

As the organisation continues to grow, our People team has an important role to play in building the organisation, supporting its leaders and creating the people practices needed for the future.

It’s an opportunity to bring your HR expertise into a complex environment where you’ll work closely with leaders and help shape how their teams develop and perform.

Why join us as a People Business Partner?

This is a broad, influential HR role where no two days will look quite the same.

You’ll have the opportunity to:

• Partner with and coach managers across a range of business areas
• Support organisational change, restructures and cultural change
• Help leaders manage individual and team performance effectively
• Support workforce planning and significant recruitment requirements
• Provide guidance on more complex employee relations matters
• Contribute to talent and succession planning
• Support learning and development priorities
• Help deliver reward activity and annual salary review processes
• Build strong relationships across the wider People function and organisation

Crucially, you’ll be joining a role where you can challenge, influence and make things happen, rather than simply providing transactional HR support. The role is described as high profile and high impact within the growing Sizewell C team.

What we’re looking for

The hiring team is particularly looking for someone who can demonstrate:

• At least 3 to 4 years’ HR Business Partner experience
• Experience working within a large-scale business or major project environment
• Matrix working experience, with the ability to navigate different reporting lines and stakeholder relationships
• Experience providing HR support across multiple areas of a business, rather than supporting one narrow function
• A strong HR generalist background and good knowledge of employment law and HR best practice
• Confidence coaching, influencing and constructively challenging managers and senior leaders
• Experience across areas such as change, performance management, talent, reward, people development, resourcing and employee relations
• Strong written and verbal communication skills
• Strong Microsoft Office skills, particularly Excel

You’ll also need to be comfortable operating in a complex environment, balancing strategic priorities with day to day HR activity while remaining commercial, pragmatic and able to deliver at pace.

Qualifications:

You should be CIPD qualified, working towards CIPD membership, hold a relevant equivalent quali