Accountancy Director

Accounting Director | VC-Backed, Tech-Led Accountancy for Start-Ups | London

The Client

Harmonic is delighted to be partnering with a VC-backed, tech-led accountancy built for start-ups, in its search for an Accounting Director. It's an ideal first move out of audit for an accountant from a Top 10 practice with 2-3 years' post-qualification experience who wants to spend their time advising founders, not ticking boxes for large clients.

The business was founded by two entrepreneurs who have already scaled and sold a technology company. With 1,000+ clients and plans to double headcount in the next 12 months, it has the funding and momentum to grow fast. The structure is flat and progression is uncapped and tied to performance. For the right person, this is a ground-floor opportunity to grow with a business that has strong commercial momentum and a product that business leaders and Founders genuinely value.

The Role

Reporting directly to the CEO, you will be expected to build strong, trusted relationships with founders and senior teams across your portfolio. The Accounting Director will own a high-volume portfolio of fast-growing start-up clients across the UK and US, acting as their primary point of contact for all accounting, compliance, and advisory needs. You will cover the full spectrum of start-up finance - statutory accounts, VAT, corporate and employment tax, R&D tax credits, S/EIS, financial modelling, and valuations for share schemes and fundraising rounds.

What makes this role distinct is the technology dimension. You will work directly alongside the in-house engineering team, identifying workflow inefficiencies and contributing to the development and rollout of AI-driven automation tools for your team and clients. This is not a role for someone who wants to do traditional accounting in a traditional way - it is for someone genuinely excited by the start-up world, interested in where accounting and technology intersect, and ready to work in a fast-moving, high-ownership environment.

Key Responsibilities

• Manage a high-volume portfolio of fast-growing start-up clients across the UK and US, acting as primary point of contact throughout the relationship
• Deliver the full range of accounting and compliance services, including bookkeeping, VAT, corporate tax, payroll, and statutory accounts
• Advise clients on start-up-specific tax matters including R&D tax credits, S/EIS, employment tax, and corporate tax
• Support clients through fundraising rounds, including financial modelling, budgeting, and valuations for share schemes and investment rounds
• Identify workflow inefficiencies and collaborate with the engineering team to scope and roll out automation solutions
• Onboard new clients and manage the full client lifecycle from initial engagement through to ongoing advisory
• Contribute to the growth and development of the wider accounting team

Essential Experience

• ACA qualified (or equivalent), ideally with 2-4 years' post-qualification experience at Manager level
• Background in a Big 4 firm or large to mid-sized accountancy practice
• Strong technical accounting and tax knowledge across a broad range of areas
• Genuinely interested in the start-up ecosystem and motivated to join an early-stage business
• Comfortable managing a high-volume client portfolio at pace, with sound judgement on when to act and when to escalate
• Strong communicator, able to build credibility quickly with founders and senior stakeholders

Desirable Experience

• Experience advising start-up or scale-up clients on R&D, S/EIS, or fundraising-related matters
• Exposure to tech-enabled workflows or interest in how AI is changing the accounting profession

Package

• Salary: £75,000 - £80,000
• Location: Victoria, London - office-based (5 days per week, with some flexibility for senior hires)
• Start Date: ASAP / flexible

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.