People Business Partner in London

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements. Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

The People Business Partner is a senior HR professional responsible for delivering pragmatic, high-quality people solutions across the full employee lifecycle. Acting as a trusted advisor to senior leaders, you will translate business strategy and data into actionable people initiatives that enable performance, engagement and organisational effectiveness. This is a generalist role with deep expertise in Employee Relations. You will operate confidently and independently at senior level, while influencing decision-making with sound judgement and commercial insight. Based on a hybrid working model with regular presence required in our London office (min 2 days per week), the role also involves travel to other Assystem sites.

Key areas of responsibility include:

• Partnering with senior leaders to deliver people strategy aligned to business unit objectives.
• Leading and providing pragmatic solutions for complex Employee Relations cases.
• Providing expert interpretation of UK employment law to ensure fair, consistent and compliant outcomes.
• Coaching and influencing leaders to strengthen capability and accountability.
• Supporting organisational change, workforce planning and people-related projects.
• Using people data and ER metrics to identify trends, risks and improvement opportunities.
• Contributing to policy development, process improvement and continuous enhancement of People services.

You will work closely with the Business Unit Director (dotted line to the Senior People Manager) and collaborate with the wider People Team to deliver a consistent, high-quality HR service.

Your Profile:

• CIPD Level 7 qualified (or equivalent).
• Chartered CIPD status.
• Significant experience managing complex and high-risk Employee Relations cases independently.
• Proven experience operating as a senior HR or People Business Partner within a complex organisation.
• Strong practical knowledge of UK employment law and the ability to apply it commercially.
• Demonstrated ability to influence and challenge senior stakeholders with credibility.
• Experience supporting organisational change and people-related projects.
• Strong analytical capability with confidence using people data to inform decisions.
• High levels of judgement, discretion and professional integrity.
• Competent and curious with AI.

Experience within an international environment and French language capability would be advantageous.

Why Join the Community of Switchers?

Join one of the top three largest nuclear engineering companies globally and be a part of a dynamic team driving energy transition. At Assystem, we offer a multicultural environment, career progression opportunities, and the chance to work on industry-leading projects that make a real difference in the world.

Please be aware that many roles at Assystem are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD – We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter! Bring your unique contributions and help us shape the future.