Interim Management Accountant VC-Backed Energy SaaS

Interim Management Accountant VC-Backed Energy SaaS London 6 Months

Harmonic are delighted to be partnering with a high-growth, VC-backed SaaS business operating at the forefront of the energy transition, in the search for an Interim Finance Manager to join their finance team on a day rate contract basis. This is a hands-on, high-impact interim assignment for a meticulous, strong attention to detail finance professional who can take full ownership of cash, transactional finance and the month-end close.

The Business:

Our client is a fast-growing SaaS business delivering cutting-edge data solutions to the energy sector. Their platform provides efficient, reliable and flexible data processing and analysis, helping energy businesses drive digital transformation, maximise ROI and make better data-driven decisions, all in support of a lower-carbon, net-zero future.

Having scaled through a Series B, the business operates across multiple entities and is investing in the systems, processes and people needed to support its next stage of growth. The culture is entrepreneurial, collaborative and hands-on, with a finance team that is keen to lean into automation and technology to increase its analytical capability.

The Role:

Reporting into the Head of Finance, the Interim Management Accountant will be the first point of contact for all things cash. This is a hands-on role with responsibility for all cash in and cash out of the business, covering daily month end and the management accounts, as well as AR, AP, credit control, bank reconciliations and comprehensive bookkeeping across the group's entities.

With full autonomy on offer, you will own the monthly close process, balance sheet reconciliations and journals, and support the Head of Finance through the year-end audit.

Main Duties:

• Own the month-end close for cash, AR, AP and bookkeeping, running a close calendar and posting accruals and prepayments
• Deliver accurate bookkeeping across all entities, automating it within NetSuite
• Own and manage the 13-week cash flow forecast
• Prepare and review balance sheet reconciliations
• Prepare, review and record journals
• Support the Head of Finance with the year-end audit
• Build reliable Excel reporting and analysis across aged debt, cash, working capital and variances
• Identify new ways to automate processes, using AI tools where they add value while always checking the logic behind the output
• Collaborate with the Head of Finance on integrating and optimising finance systems (ERP, billing, payment gateways, expense management)
• Map out and document all finance operational flows, implementing improvements to scalability and controls

What we need to see (essential):

• Deep, hands-on expertise across Accounts Receivable, Accounts Payable and comprehensive bookkeeping
• Hands-on experience of month-end close, balance sheet reconciliations and journals
• Excellent communication skills and strong attention to detail
• Fully Qual / Part Qual / Qualified by Experience

What we'd like to see (bonus):

• NetSuite experience
• Experience within a high-growth, Series B SaaS environment

Day Rate: £300 - £325 per day (potential flex for ideal candidate)

Contract Length: 6 months - high likelihood of extension / temp to perm

Location: East London - one day a week in office

Start Date: ASAP

At Harmonic, we are dedicated to fostering an inclusive and equitable workplace. We actively welcome applications from individuals of all backgrounds and assure you that every candidate will be thoughtfully considered for the roles we represent, without regard to race, religion, gender expression, disability, or sexual orientation.