Site Administrator in Knottingley

Fixed Term Contract until 31st December 2026

Be at the heart of a facility that powers progress. Are you an organised, people-focused problem-solver who thrives in a fast-paced environment? Do you want your work to help shape a cleaner, greener future? Then this might be the role for you.

At enfinium, we’re leading the way in energy-from-waste. Our facilities transform waste into sustainable power for the UK – and we’re proud to play a vital role in helping society reduce landfill and carbon emissions.

We’re looking for an enthusiastic Site Administrator to join our team. You’ll provide essential administrative support to our Plant Management and senior teams, acting as a vital link between operations, people, and performance. No two days are the same, and you’ll be involved in everything from document management and onboarding new starters to supporting health, safety, and compliance reporting, site tours, and stakeholder engagement.

What you’ll be doing:

• Keeping things running smoothly with day-to-day admin support for our Plant Manager, SHEQ, Operations, Maintenance, HR, Procurement, and Communications teams.
• Supporting the full employee lifecycle – including recruitment, onboarding, training logistics, and accurate record-keeping.
• Helping ensure compliance with company systems, health & safety procedures, and ISO standards (ISO 9001, 14001, 45001).
• Managing site documentation, reporting deadlines, training records, and audit support.
• Coordinating meetings, preparing agendas, and taking minutes for the senior team.
• Welcoming visitors, supporting site tours, and liaising with local authorities – you’ll be a friendly and professional ambassador for enfinium.

What you’ll bring:

• Experience working in a busy office environment – ideally within an operational or technical setting.
• Excellent organisational skills and the ability to juggle multiple tasks with accuracy and calm.
• Confident IT skills (especially Microsoft Office – Excel, Word, PowerPoint).
• Strong communication skills – written and verbal – and the ability to work with people at all levels.
• Familiarity with ISO standards and a basic understanding of HR or compliance processes would be a bonus.

You’ll love this job if you:

• Enjoy variety – one day you’re collating reports for regulators, the next you’re setting up a site tour for a local school.
• Get satisfaction from helping others work more efficiently.
• Are curious, proactive, and always willing to roll up your sleeves to help the team.

Who are enfinium?

As one of the UK’s leading energy from waste operators, enfinium is supporting our country’s journey to a Net Zero economy. We do this by operating and developing six decarbonisation hubs around the UK, where we use waste that would otherwise go to landfill to generate homegrown energy.

Today, enfinium has an annual waste processing capacity of over 2.3 million tonnes, and a total combined electric generating capacity of 265MW (gross) - enough energy to power more than 500,000 UK homes. enfinium is owned by infrastructure investment funds managed by Igneo Infrastructure Partners.

At enfinium we’re guided by five principles, we use these to make sure we’re not only doing a great job, but we’re doing it in the right and safe way: One Team - Pride Matters - Safety on Purpose - Make a positive impact - Take Ownership.

As a Company, we really value our employees and as such, offer a generous employee benefits package which includes the following:

• Vitality Private Medical care
• Private Dental Care
• Life Assurance
• Company pension with a 6% company contribution
• Cycle to Work scheme
• Employee Assistance programme
• Uniform provided
• Continuous learning and development through our e-learning portal and access to role-based qualifications