Assistant Accountant | High Growth Fintech | London/Hybrid

Harmonic are excited to be working with a fast-growing, FCA-regulated consumer credit business that has more than doubled its revenue over the past year and expanded its headcount significantly in the same period. It's a great stage to join, with real investment going into building out the finance team.

For an ambitious early-career finance professional, this is a chance to build strong accounting fundamentals while learning how reporting, controls, payments, audits, data and regulation come together in a real fintech environment.

This Assistant Accountant role has been created to support the company's internal accountant as the business continues to grow.

You will keep the day-to-day finance operation running smoothly, posting bank transactions, processing supplier invoices and owning regular bank reconciliations, while building genuine hands-on exposure to month-end close: journals, accruals, prepayments and balance sheet schedules. You will support month-end reporting packs, variance analysis, budgets and forecasts, and help keep the team's records audit-ready.

You will be joining a small, hands-on finance team where your work will be visible, your ideas will be heard, and you will get exposure to the finance engine behind a rapidly scaling financial services business.

There is a genuine path to progress, with a hiring manager who is invested in developing you.

• Post daily bank transactions accurately and on time
• Process supplier invoices, receipts and payment records with a strong focus on accuracy and controls
• Support the accounts payable process, including invoice coding, supplier statement checks, queries and payment run preparation
• Own regular bank reconciliations across company accounts and payment platforms, investigating and escalating differences
• Gain hands-on exposure to month-end close, including journals, accruals, prepayments and balance sheet schedules
• Support month-end reporting packs, variance analysis, budgets and forecasts
• Maintain organised finance records and working papers so the team is ready for audit, internal review or regulatory requests
• Support process improvements and finance projects as the business scales

• Some experience in an Assistant Accountant, Finance Assistant, or Accounts Assistant role
• Good understanding of double-entry bookkeeping and core accounting principles
• Experience with bank reconciliations, accounts payable, or month-end schedules
• Confident Excel skills, including formulas and reconciliations
• AAT qualified, studying AAT, or working towards ACCA, CIMA or ACA
• Reliable and comfortable handling significant cash volumes with accuracy and integrity

• Experience in financial services, lending, fintech, or another regulated business
• Familiarity with Sage 50 or similar accounting software

Salary: £40,000-£50,000 + Study Support

Location: Central London (On site 3 days)

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.