Head of Finance in Abingdon

Location: Abingdon (OX14 1RL)

At Trinity Fire & Security, we’re more than just experts in safety and security — we’re a supportive team with a shared purpose: protecting what matters most to our customers.

We’re looking for a Head of Finance who will act as the senior finance lead for Trinity, combining strong financial control with proactive commercial insight and business partnering. In this role you will support operational and strategic decision-making across installation projects, service contracts, and maintenance activities, while ensuring robust reporting, governance, and scalable finance processes.

This is a hands-on leadership role suited to a commercially minded finance professional who can both run an effective control function and influence performance across the wider business. This role is a full time permanent role, based from our Abingdon office but will involve weekly travel to visit team members in Exeter.

What you will be doing

• Commercial Performance & Business Partnering
  • Partner with the Managing Director and operational leaders to improve financial performance, profitability, and cash generation.
  • Provide forward-looking insight through budgeting, forecasting, and KPI analysis.
  • Support pricing, tendering, and contract decisions with robust financial analysis and challenge.
  • Translate financial information into clear, actionable insights for non-financial stakeholders.
• Financial Control & Reporting
  • Oversee both shared service and directly managed resources including general ledger, billing, month-end processes, accounts payable and credit control activities.
  • Ensure accurate accounting for project and contract-based revenue, including WIP, accrued income, and revenue recognition.
  • Prepare, review, reconcile and sign off monthly management accounts and financial packs including P&L, balance sheet, cash flow, KPIs, and variance analysis.
  • Manage cash flow, credit control, and supplier payments.
  • Lead the year-end audit process and act as primary contact for auditors, accountants, and tax advisors.
• Systems, Process & Transformation
  • Support the transition and integration of finance systems and reporting tools.
  • Lead improvements to processes, controls, and data quality to enable scalability and efficiency.
• Leadership
  • Lead, mentor, and develop the finance team, fostering a high-performance, collaborative and service-oriented culture.

What we’re looking for

• Significant experience in a senior finance leadership role (e.g. Head of Finance, Finance Manager, Financial Controller or similar).
• Strong understanding of project accounting, WIP, contract revenue recognition, and cash flow management.
• Demonstrable experience driving commercial performance, not just financial reporting.
• Experience improving systems, processes, or supporting finance transformation initiatives.
• Strong Excel and ERP/accounting system experience.
• Ability to influence and challenge senior stakeholders constructively.
• Confident communicator with the ability to explain financial concepts clearly.
• An analytical and insight-driven leader, with a focus on outcomes.
• Resilience and adaptability in a fast-paced, evolving environment.
• Professional accounting qualification (ACCA, CIMA, ACA or equivalent).
• Experience partnering with operational or project-based businesses such as construction, engineering, facilities management, or fire & security services is highly desirable.

What we can offer

• A competitive salary.
• Car allowance.
• 23 days annual leave (increasing with service), plus bank holidays.
• Pension scheme.
• Life Assurance.
• Access to our employee discount programme – savings at over 800 national retailers.
• Employee assistance and wellbeing programme.
• Employee referral scheme.

Equal Opportunities in Practice

We are committed to equality of opportunity for all staff and applications from individuals are encouraged regardless of age, disability, sex, gender reassignment, sexual orientation, pregnancy and maternity, race, religion or belief and marriage and civil partnerships.

Security Vetting

It is an industry requirement that successful candidates / future employees undergo security vetting. Offers of employment are subject to satisfactory vetting and may be withdrawn if the required standards are not met.