Accounts Assistant

Accounts Assistant About Us: Greenjets is an innovative engineering company developing high-performance propulsion systems for the aviation market. Our work spans research and development, engine production, aircraft systems, technical integration and flight testing. We are committed to delivering high-grade engineering and best-in-class propulsion for unmanned aircraft. We do things differently. We move fast, we experiment and we adopt technologies that push beyond the current state of the art. Our aim is to go further, faster and more efficiently, while keeping costs competitive. All our propulsion systems are designed, developed and manufactured in the UK. We focus on high quality, reliable and cost effective products supported by a robust, secure and ethical supply chain. About the Job: Greenjets are looking for a meticulous Accounts Assistant to support our accounts payable and payroll functions. This role suits someone who is part‑qualified or fully qualified in AAT, highly organised, and confident working in a fast‑paced operational environment. You’ll be responsible for accurately inputting payroll data — including overtime and shift allowances — as well as processing staff and travel expenses. What You'll Do: Process purchase invoices, staff expenses, and supplier payments, ensuring all entries are accurately coded to the correct project codes. Reconcile bank accounts and credit card statements on a regular basis, maintaining accurate and up-to-date financial records. Collect and verify receipts from staff to ensure compliance with company policies. Support the preparation of monthly management accounts, including journal entries and reconciliations. Follow up with suppliers to obtain missing invoices and resolve discrepancies. Review aged payables, investigate discrepancies, and assist with clearing outstanding balances. Assist in preparing the weekly/monthly payment run and present to the Manager for review and approval. Carry out general administrative tasks, such as filing, document management, and data entry, to support the finance team. Desirable Qualifications, Experience & Attributes: AAT Level 2–4 (part‑qualified or fully qualified) Training or certification in payroll administration (e.g., CIPP Foundation level) Experience processing weekly or monthly payroll in a fast‑paced environment Handling overtime, shift allowances, bonuses, and other variable pay elements Managing staff expenses, including mileage, subsistence, and travel claims Using payroll or finance systems such as Sage, Xero, SAP, iTrent, or similar Reconciling payroll reports and supporting month‑end processes Strong attention to detail and ability to work to tight deadlines Department Finance Locations Milton Keynes Remote status Hybrid Employment type Full-time About Greenjets At Greenjets we’re rethinking how the world moves through the air. From cutting-edge electric propulsion to autonomous UAV systems, we design and deliver technology that makes aviation quieter, cleaner and more capable. Joining us means working on projects where your ideas have real impact, combining deep engineering expertise with bold design thinking. As a fast-scaling company there are countless opportunities to take ownership and grow, all within a culture that is collaborative, curious and hands-on Founded in 2022 Co-workers Circa 65