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Fractional Financial Controller | High-Growth AI Start-Up | 2 days per week. The Client: Harmonic are delighted to be working with a high-growth, venture-backed technology business to find them a Fractional Financial Controller to support over a 6-month engagement (2 days per week). The business operates at the cutting edge of its field, partnering with enterprise and international clients, and is experiencing rapid growth. Despite this, they maintain a lean, collaborative, and fast-paced environment typical of an early-stage scale-up. They are now looking for an experienced finance professional to bring structure, oversight, and commercial insight to their finance operations during a key phase of growth. The Role: This is a hands-on and varied role, requiring a detail-oriented and proactive individual who can take ownership of the finance function while partnering closely with senior stakeholders. You will be responsible for ensuring the smooth running of day-to-day finance operations, improving processes, and providing clear financial insight to support decision-making. This role would suit someone comfortable operating in a scaling business where processes are still evolving, and who can balance both operational delivery and strategic input.
Job Responsibility:
Oversee and manage the outsourced accounting function
Ensure accurate and timely financial reporting, including monthly management accounts and board packs
Monitor budget vs. actuals, providing variance analysis and commentary
Support cashflow forecasting and ongoing tracking of financial performance
Maintain robust financial controls and ensure compliance with statutory requirements
Partner with senior stakeholders to support financial planning and scenario analysis
Provide insight into business performance, highlighting risks and opportunities
Support preparation of materials for investors and board reporting
Oversee invoicing processes to ensure accuracy and alignment with contractual terms
Oversee payroll coordination with external providers
Ensure accurate record-keeping across financial and operational documentation
Support equity and cap table administration where required
Liaise with external advisors (accountants, legal, payroll) to ensure compliance
Assist with entity management and international expansion requirements where relevant
Requirements:
Fully qualified accountant (ACA, ACCA, or CIMA)
Previous experience in a Financial Controller or similar role within a growing business
Strong technical grounding with the ability to oversee end-to-end finance operations
Experience working with outsourced finance providers
Comfortable working in a fast-paced, scaling environment
Nice to have:
Prior experience in a technology or SaaS business
Exposure to investor reporting and fundraising environments
Experience with subscription-based or contract-based revenue models