Financial Assistant in Slough

Are you looking to build your finance career in a business that is shaping the future of clean energy? At Island Green Power, we are not only developing solar and battery storage projects, we are helping drive the transition to a more sustainable world. As we continue to grow, we are looking for a Finance Assistant to join our collaborative and high-performing finance team.

This is an excellent opportunity for someone early in their finance career who wants real responsibility, exposure to a dynamic multi-entity environment, and the chance to contribute from day one.

This is a hands-on role where you will take ownership of key responsibilities and play a meaningful part in the day-to-day running of the finance function. You will be joining a team that offers:

• Early responsibility and ownership of your work
• A supportive and collaborative environment
• Opportunities to build both technical and commercial finance skills
• A role within a purpose-driven organisation focused on sustainability

• Take ownership of invoice processing and supplier payments across assigned entities
• Manage accounts payable activities, ensuring accuracy, timeliness, and strong supplier relationships
• Prepare and review bank and balance sheet reconciliations, resolving discrepancies where needed
• Support month-end and year-end close processes
• Assist with audit preparation and respond to auditor queries
• Provide cover for employee expense processing when required
• Maintain accurate financial records and support general finance administration
• Identify opportunities to improve systems, processes, and controls
• Collaborate with colleagues across the business to provide dependable finance support

We are looking for someone who can quickly become a dependable member of the team, particularly within accounts payable, and who is confident working with minimal supervision. You will likely bring:

• Around 2-3 years’ experience in a finance or accounts payable role
• A relevant qualification (AAT, ICB, IAB, or similar; a degree is not essential although welcome)
• Experience with invoice processing, payments, and reconciliations
• Exposure to month-end processes
• Familiarity with ERP systems (such as NetSuite, SAP, or Oracle), or a strong aptitude for systems
• Solid Excel skills and strong attention to detail
• A proactive, team-oriented mindset

• Takes ownership of your work and delivers consistent, high-quality output
• Is keen to build and deepen your experience over the next few years
• Has an interest in working in the renewable energy sector

• Hands-on experience in a multi-subsidiary business
• Exposure to more complex finance operations and systems
• Ongoing training and mentoring from an experienced team
• A strong foundation for long-term career in finance
• The opportunity to contribute to a growing organisation with a clear sustainability mission

Island Green Power is a leading renewable energy company specialising in solar and battery storage development. We are committed to accelerating the transition to clean energy through innovation, collaboration, and technical excellence. We foster an inclusive and supportive work environment where individuals are encouraged to develop, contribute, and grow.

If this role sounds like a good fit for you, please apply here. If you don't fit a 100% of the criteria but you'd be interested in stepping up into this role, please reach out to our Talent Acquisition Manager to discuss in more detail - we would be delighted to hear from you.