Finance and Accounting Supervisor

Accountant
One Big Circle – Bristol office (in person, non-remote)
Full-Time 37.5 hours over 5 Days
Salary £40- £50k depending on experience
The Sunday Times Best Medium-sized Technology Company 2025
Formed in 2017, One Big Circle is a fast-growing Bristol technology company that provides “Intelligent Video” solutions. We focus entirely on solving real-world industry problems by fusing new technology in the field of Video, IOT, Cloud and AI providing end to end solutions which allow our customers to dramatically improve their operational efficiency and safety. Our culture is one of high-quality technical delivery and we work at a speed that many industries are unaccustomed to; we have done this by building a team dynamic that challenges and empowers our people and creating an environment where everyone contributes and learns. AIVR (Automated Intelligent Video Review) is a state-of-the-art video technology system used by thousands of people in the rail industry. AIVR has won dozens of awards and is recognised as the market leading solution, but we are building many more opportunities both in existing and new markets which will further accelerate our growth.
We are seeking a proactive and commercially minded Accountant to join our collaborative finance team. This role is open to individuals who are fully or nearly qualified in CIMA, ACCA, or ACA and who have a strong interest in financial management and business performance. As an Accountant, you will play a central role in ensuring accurate and timely delivery of monthly management accounts, management accounts analysis, and reporting across different areas of the business. As a commercially aware Accountant, you have oversight of proposals and costing of projects, and how these align with the strategic aims of the business.
Key responsibilities include supporting tax and regulatory compliance, monitoring changes that impact the business, and managing initiatives such as R&D tax credits and government schemes. You will also contribute to the monthly management accounts process, forecast analysis, budget planning, capital expenditure projects, and continuous improvement of finance processes and controls.
Beyond the technical aspects, this role provides the opportunity to act as a mentor to apprentice accountants, be mentored by senior finance professionals, support the year-end audit process, and collaborate closely with a team that brings diverse and complementary finance skills. We are looking for someone who will not only strengthen the delivery of finance but also enhance the team’s impact across the wider business.
Deliver accurate and timely monthly management accounts.
Analyse and report on the monthly P&L and other financial reports.
Provide financial reporting across different areas of the business.
Translate financial performance into meaningful insights, KPIs, and targets.
Support budget planning and forecasting processes.
Monitor and support compliance with tax requirements and regulatory changes.
Manage initiatives such as R&D tax credits and government schemes.
Play a key role in capital expenditure projects.
Support the year-end audit process.
Identify and implement continuous improvements across finance processes and controls.
Informally mentor and support apprentice accountants.
Collaborate with the wider finance team to strengthen its impact across the business.
Personal Qualities
Commercially aware – able to see the bigger picture and link finance and commercial processes.
Analytical and detail-oriented – comfortable working with complex data and drawing out clear insights.
Proactive and forward-thinking – takes initiative, keeps up to date with tax/regulatory changes, and identifies opportunities for improvement.
Strong communicator – able to translate financial information into clear, practical insights for finance and non-finance colleagues alike.
Adaptable and resilient – flexible in responding to business needs, deadlines, and regulatory changes.
Strong experience in accounting platforms such as Xero.
~3+ years experience in a finance role
~ A degree or equivalent experience in business or accounting
~ Qualified or nearly qualified in CIMA, ACCA, or ACA.
~ Experience in VAT or other tax returns (desirable)
~ Proficient in Excel and Google Sheets, with experience using other Microsoft office software.

Auto enrolment Pension Scheme
25 Days Holiday plus bank holidays
Life Assurance
Private Healthcare Cover
Work related training courses as required
Complimentary snacks and refreshments including fresh fruit
Office-Centric role
Access to Bike to Work Scheme
Secure bike storage and shower facilities
Social events