Assistant Financial Controller

Assistant Financial Controller 

Are you a qualified CIMA or ACCA finance professional who thrives in fast-paced, hands-on environments? Do you enjoy building structure, driving consistency, and partnering across the business to deliver results?

We're looking for a proactive and detail-driven Assistant Controller to oversee core elements of our Finance Controlling function — spanning Head Office, Projects, Capital, and Repair & Maintenance accounting, alongside managing a transactional finance team.

This is a high-visibility role within our Finance function, supporting critical decision-making and ensuring that key controls, reporting, and processes operate with integrity across all sites.

The Opportunity

As Assistant Controller, you will:

• Maintain and enforce Finance controls and policies across multiple sites and Head Office.

•  Review journals and balance sheet reconciliations, ensuring accuracy, consistency, and audit readiness.

• Oversee Finance systems master data across all entities.

• Develop KPI reporting to track performance and ensure accountability in core processes.

• Support and coordinate Finance colleagues across Projects & Head Office, Asset Accounting, and Shared Services.

• Contribute to monthly management accounts, trial balance production, and financial performance analysis.

• Act as a deputy to the Financial Controller when required, stepping into leadership when necessary.

Leadership & Collaboration

You will manage a team of three direct reports, ensuring they are supported, motivated, and delivering high-quality outputs. You will work closely with stakeholders across plant locations and Head Office, so strong communication and relationship-building skills are essential.

Candidate Profile

You will be successful in this role if you are:

• Qualified in CIMA or ACCA with a strong understanding of accounting principles.

• Experienced in finance operations, business partnering, or controlling roles.

• Confident working with system-integrated purchase-to-pay and order-to-cash processes.

• Highly proficient in Excel and Microsoft Office.

• Naturally proactive with excellent attention to detail and problem-solving skills.

• Comfortable managing multiple priorities and leading others with clarity and confidence.

What this role offers

• A broad and influential position with real ownership of finance processes.

• Exposure to multiple operational sites and senior business stakeholders.

• The opportunity to improve and future-proof the Controlling function.

• A supportive Financial Controller who will empower you to take initiative and step up.

Who are enfinium?

enfinium is one of the largest pure-play waste to energy operators in the U.K. who transform waste into heat and energy that power our homes businesses, green communities and the circular economy. With more than 45 years of proven industry experience. enfinium has four operating facilities around the U.K and a further two facilities in construction and are transforming the way our industry serves customers, communities and the environment.

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