Assistant Manager | Tech/SaaS Focused Accounting Firm | London/Hybrid

Harmonic Finance™ | Certified B Corp; Greater London; Hybrid; GBP 45,000 - 50,000; Full time

Job summary

A leading accounting firm in London is seeking a Senior Accountant to support a portfolio of clients in the tech/SaaS sector. The role includes management and oversight of month-end processes, opportunities for mentorship, and clear pathways for career progression. Ideal candidates will be fully qualified accountants looking to fast-track their career while gaining valuable leadership experience in a dynamic environment.

Benefits

Generous benefits

Strong training and progression opportunities

Qualifications

• Qualified accountant with at least 6 months PQE.
• Strong month-end and management accounts exposure.
• Knowledge of Xero software is essential.

Responsibilities

• Manage 2 junior team members, providing support and coaching.
• Oversee month-end close and management accounts processes.
• Build custom reporting tools for client decision-making.

Skills

Strong communication

Ability to manage multiple clients

Curious and ambitious mindset

Education

Fully qualified (ACCA, ACA, or CIMA)

Tools

Xero

Job description

Senior Accountant | Tech/SaaS Accounting Firm | London/Hybrid

Senior Accountant | Tech/SaaS Accounting Firm | London/Hybrid

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Harmonic Finance | Certified B Corp provided pay range

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Specialist in Finance/Ops/Exec Hires for the TV/Film Industry | [e-mail]

Senior Accountant | Tech/SaaS Focused Professional Services SME | London/Hybrid

Our client is a fast-growing financial and accountancy service provider specializing in scale-ups and SMEs in the tech industry. Having recently completed an acquisition and on track to triple their turnover in the next two years, they are poised to become one of the UK’s leading names in outsourced finance and accounting solutions.

Beyond their impressive growth, they boast an exciting portfolio of some of the most innovative scale-ups in London’s tech ecosystem. Their approach goes beyond traditional accounting—providing outsourced finance support, exceptional customer service, and expert insights into automation and financial technology to help businesses thrive.

Based in a vibrant area of Central London, the company fosters a collaborative and welcoming culture. Employees feel valued and invested in, as reflected in high retention rates and generous benefits. They are looking for committed team members who want to grow with them, offering strong training and progression opportunities to develop into senior leadership roles over time.

The Role

Reporting to Fractional CFOs and Finance Directors, the Senior Accountant will support a portfolio of 8+ clients, overseeing their month-end close and reporting processes. Key responsibilities include serving as point-of-contact for clients, managing the month end and management accounts process (with the support of a larger team of junior accountants) and providing strategic and operational insight in regard to the growth of the business.

You'll also have the opportunity to line-manage 2 junior accountants, gaining valuable leadership experience. No previous management experience required, just the eagerness to mentor!

This role is ideal for a newly qualified accountant looking to fast-track their career by working across multiple finance functions (supporting exciting, scaling businesses in tech and SaaS). Strong communication skills, the ability to manage multiple clients, and a curious, ambitious mindset are essential.

Clear pathways to progression—including to Finance Director—are available, supported by ongoing training and development.

Responsibilities

• Manage 2 junior team members – provide coaching, collaboration, and day-to-day problem-solving
• Set up and manage finance systems for new clients, ensuring data is well-organized and fit for reporting
• Create and review regular close activities and working papers, including reconciliations, returns, and journal entries
• Review and contribute to month end processes, statutory accounts, and management commentaries, delegating tasks to juniors in the team as needed
• Improve and document client processes, using tech to streamline workflows where possible
• Build custom reporting tools and insights to support client decision-making
• Manage client relationships, respond to questions, and handle a range of ongoing and one-off requests
• Track team workload, time and resources allocated per project internally to help manage portfolio and fees charged to clients
• Ad hoc tasks to support the Founders and Finance Directors/CFO’s

What We Need to See (Essential)

• Fully qualified (ACCA, ACA, or CIMA) with at least 6 months’ PQE
• Strong month-end and management accounts exposure
• Knowledge of Xero

What We’d Like to See (Bonus)

• Previous experience in an SME/scale-up environment
• Previous experience in the tech/SaaS industries

Package:

Salary: £45,000 - £50,000 + bonus and competitive benefits

Location: London

Start Date: ASAP

Hybrid: 3 days in office / 2 days working from home

If this is of interest, please get in touch with your CV at [e-mail] or give me a call on 0203 773 3530

Due to the high volume of applications we are receiving, if you have not heard back from us, please assume your application was unfortunately unsuccessful on this occasion.

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.

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Management, Finance, and Accounting/Auditing

• Industries

  Technology, Information and Media, Professional Services, and Accounting

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