Senior Management Accountant Ecommerce Scaleup

Senior Management Accountant | Rapid Growth Marketplace / Ecommerce Scaleup | London / Hybrid

The Client

Harmonic are delighted to be working with a fast-growing marketplace business to recruit a Senior Management Accountant.

Our client operates across multiple markets and is expanding both in the UK and internationally. They are investing heavily in their finance function, technology, and people to support ambitious growth plans.

This is a fantastic opportunity to join a dynamic and entrepreneurial scale-up environment. The Senior Management Accountant will play a central role within a small but high-performing finance team, working closely with the Finance Director. The role is well-suited to candidates who enjoy combining technical accounting with systems optimisation and process improvements in a fast-paced business.

The Role

The Senior Management Accountant will take ownership of the month-end process, compliance, and technical accounting, while also driving improvements across financial systems and controls using Xero.

This position suits candidates who enjoy working in high-growth businesses such as retail, consumer brands, digital agencies, or marketplaces.

Responsibilities

• Lead month-end close and reporting across UK and US entities, ensuring accurate and timely financial statements.
• Manage general ledger operations including reconciliations, journal entries, and intercompany.
• Prepare financial reports, variance analysis, and commentary for senior stakeholders.
• Own technical accounting matters, researching and implementing new standards.
• Develop and maintain accounting policies, procedures, and internal controls.
• Manage audits and act as the key point of contact.
• Oversee invoice processing, cashflow monitoring, reconciliations, and chasing outstanding items. AP/AR are currently managed by an outsourced function.
• Drive process improvements, automation, and the full utilisation of Xero and related finance platforms.

What our client would like to see (requirements):

• Qualified Accountant (ACA, ACCA, CIMA, ICAS, CPA or equivalent).
• Strong technical accounting knowledge (UK and US GAAP, VAT, Corporation Tax, Payroll).
• Confident with financial systems, ideally Xero, with experience in ERP platforms.
• Highly organised and detail-focused, with strong problem-solving skills.

What we would like to see (non-essential):

• Experience working in retail, consumer goods, e-commerce, digital agencies, or marketplaces.
• Previous experience in a scale-up or SME.
• Passion for process automation and financial technology.

Salary: £60,000 - £65,000 (+ benefits)

Start date: Maximum 1 month notice

WFH: Hybrid working offered

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.

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.