Job Opportunities at Third FD

Senior Bookkeeper (Part-Time)

£30,000-£35,000 FTE (depending on experience)

Remote | Flexible working

Role Overview

We are looking for an experienced Bookkeeper to join Third FD as we continue to grow our finance offering to charities and purpose-led organisations.

This is an opportunity to be part of a high-quality, client-facing finance function, where your work directly supports meaningful organisations.

This is a 3 days / 22.5 hrs per week role, with potential to increase as new clients are onboarded. The role is flexible and 100% remote with ad hoc office time as required and with the benefit of being part of a small friendly team.

You will play a key role in maintaining accurate, real-time financial data, working closely with the Management Accountant, Portfolio Finance Director and Operations Manager

This is not a purely transactional role - you will be part of a joined-up finance function supporting multiple clients and gaining exposure to the wider finance process

About Third FD

Third FD provides FD, management accounting, and full finance function support to charities and purpose-led organisations.

We are a relationship-led, integrated partner to our clients - embedding ourselves within their teams and becoming a trusted part of how they operate. Our focus is on delivering clarity, control, and reliable financial insight through accurate data, clear communication, and well-structured systems.

 We value people who communicate well, build rapport quickly, and take ownership of delivering a consistently high standard of service.

Key Responsibilities

  • Maintain accurate accounting records in Xero

  • Process invoices using Dext / ApprovalMax

  • Manage bank reconciliations and control accounts

  • Support month-end close (accruals, prepayments, journals)

  • Prepare and process payment runs (Telleroo / bank platforms)

  • Maintain strong financial controls and audit trails

  • Support client onboarding and process implementation

  • Work within structured workflows (Karbon)

  • Collaborate with the wider team to ensure clean data for reporting

  • Direct communication with clients in a clear, professional, and proactive manner

Experience & Qualifications

Essential:

  • AAT qualified (Level 3 or above)

  • 3+ years bookkeeping experience, ideally in a practice or multi-client environment, with responsibility for full ledger ownership

  • Strong experience with Xero

  • Familiarity with tools such as Dext and payment platforms

Desirable:

  • Charity/not-for-profit experience

  • Understanding of deferred income and fund accounting

  • Understanding of Karbon

Skills & Attributes

  • High attention to detail

  • Strong organisational skills and ability to manage multiple clients

  • Clear, professional communicator — confident working directly with clients

  • Builds positive working relationships and integrates well within a team

  • Collaborative, supportive, and easy to work with (team fit is essential)

  • Takes ownership and follows things through without prompting

  • Proactive mindset — identifies issues early and takes action

  • Actively looks for ways to improve processes and efficiency

Working Style

  • 3 days or 22.5 hrs per week split over multiple days (with potential to scale over time)

  • Remote and flexible

  • Process-driven, with a mindset to improve

  • Accountable for quality and deadlines

This role may not be suitable for you if:

  • You prefer purely internal roles with no client interaction

  • You are looking for a repetitive data-entry position

  • You are not comfortable managing multiple clients and priorities

Application Process

Please send your CV and covering letter to hello@thirdfd.com

When applying for this role please answer the following qualifying questions

Please include the word “cake” in your email subject line so we know you’ve read the full description.

Qualifying Questions

1.       Do you have at least 3 years Bookkeeping experience and are AAT qualified to level 3 or above?

2.       Having looked at our website, please name one of our existing clients

3.       What days and hours are you available to work?