Company Overview Metrea delivers effects-as-a-service to national security partners across five domains and more than a dozen mission areas. These include airborne ISR, electronic warfare, secure communications, aerial refueling, special air missions, aerial firefighting, and advanced simulation. We own the whole stack: designing, building, and operating turnkey capabilities that give our partners decisive, asymmetric advantage against rapidly evolving threats. Our operating model is built around three interlocking pillars. The Support Groups provide a global shared-service – spanning people, finance, platform, operations, legal, and engagement. This frees up our Core Groups, who develop and own mission capabilities end-to-end, to focus entirely on delivery. The Market Groups apply a regional lens, ensuring that our agile and adaptable capabilities remain aligned to the wicked problems that matter most to our partners across the Americas, EMEA, and Asia-Pacific. At the heart of our model is a simple but powerful idea: be a true partner with skin in the game. Our partners need effects, not just equipment. By owning the full stack – from the lab to the field – we are able to drive a continuous cycle of innovation that keeps our partners ahead. It's a fast-moving, intellectually demanding environment where talented people are given real responsibility, work on problems that matter, and contribute to an enterprise that is growing quickly and deliberately. Headquartered in Washington, DC, with facilities across the United States, the United Kingdom, as well as Continental Europe and Asia-Pacific. Position Summary If you're naturally curious, highly organised, and thrive on getting the details right, this could be the perfect opportunity for you. We're looking for a proactive Accounts Assistant who enjoys taking ownership, solving problems, and contributing to a high-performing Finance team. In this role, you'll play an important part in keeping our European finance operations running smoothly. From processing accounts payable, purchase orders, and employee expenses to supporting month-end close activities and bank reconciliations, you'll ensure financial information is accurate, timely, and reliable. You'll work closely with colleagues across the business, building strong relationships while continuously looking for ways to improve processes and deliver exceptional service. This role is ideal for someone who is a self-starter, enjoys working in a fast-paced international environment, and is eager to build a broad foundation in finance while making a tangible impact every day. What You'll Do Complete accounts payable voucher coding and data entry in applicable Interfaces: including Microsoft D365 and any other accounting systems utilized by Capability Units within Metrea Process weekly payment runs for assigned Business Units via AP department Cadence Review and invoice purchase orders Invoice Processing: Review, validate, and process invoices, ensuring proper coding, approvals, and documentation Processes expense report verification, approval, payment, posting, and reconciliation Maintain accounting records management system: Including SharePoint repository Research and resolve issues related to accounts payable Monitor assigned MS Outlook email for Capability Unit communications Provide prompt feedback for internal and external parties with vested interest in account status Ensure all vendors are properly approved, set up, and updated with the proper tax documents Gather data to support financial audits Assist staff with all accounting administrative duties as requested Assist with special analytical projects as directed by management Provide backup assistance as needed to direct AP co-workers and management Attending and maintaining an onscreen presence on all Microsoft Teams meetings Submit weekly timesheets to manager for approval Maintaining a weekly Accounts Payable Cash Forecast Bank Reconciliation: Perform regular bank reconciliations to ensure the accuracy and completeness of financial records Assist in Month-End Close: Support the month-end closing process by preparing journal entries, reconciling accounts, and ensuring all financial records are up to date Ad hoc Tasks: Assist the finance team with ad hoc projects, analysis, or tasks as required What You Bring Must be a highly motivated self-starter with attention to detail and deadline oriented Must possess the ability to communicate effectively, both verbally and written Must possess a well-rounded technical aptitude and ability to learn new systems Strong interpersonal skills Excellent problem resolution skills, able to operate with minimal supervision and self-motivation when given new assignments Discretion and confidentiality are always required 2+ years experience in an accounts assistant or similar role Experience with Dynamics 365 is advantageous Benefits Private Medical Insurance Subsided gym membership / plans through Wellhub Electric Car scheme Cycle to work scheme Salary sacrificed pension scheme Free lunch on office days Enhanced Parental Leave 30 days annual PTO plus b/h Bonus Scheme Personal development opportunities Work Authorization / Security Clearance The employee will have the legal right to work in the UK and will be able to produce right to work documentation. AAP/EEO Statement Metrea Management Limited (MAM) is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or other characteristics protected by law. Position Type and Expected Hours of Work This is a full-time with typical working hours of Monday through Friday, 9:00 a.m. to 6:00 p.m. Work Environment This job operates in an office setting , London (attendance at London office 3 days a week). Travel Ability to travel occasionally, as business needs require. Travel is expected to be infrequent and not a regular component of the role. Our Firmware At Metrea, our single core value is Rooted in Humility, and our four cornerstone attributes are Entrepreneurial, Systematic, Discerning, and Over-Deliver. These form what we call our Teammate Firmware. Just like technical firmware connects software and hardware, our Firmware is the constant interface between our mission and our people. It defines how we show up, how we work together, and how we solve complex problems. Our team Firmware creates a web-like, hyper-collaborative, dynamically hierarchical way of working that helps us adapt quickly, communicate openly, and distribute decision-making to where expertise actually lives. It enables groups to self-organize around hard problems, shift fluidly as priorities evolve, and operate with the trust, curiosity, and discipline required in a complex mission space. This foundation allows us to deliver elegant, effective solutions and uphold our purpose: protecting our precious inheritance.