Accounts Payable & Expenses Administrator

UK CITIZENSHIP REQUIRED FOR THIS POSITION:
Yes

RELOCATION ASSISTANCE:
No relocation assistance available

TRAVEL:
Yes, 10% of the Time

Clearance Type:
SC

Salary: £26,000 – £29,000

At Northrop Grumman UK
, you are part of a team driving innovation where it matters most – solving tomorrow’s challenges and shaping the technology solutions of the future. It’s what we call Defining Possible
.

This mindset goes beyond our customer solutions; it’s the foundation for your career development and the impact we have within the community.

This is more than just a job;
it’s a mission
.

We are looking for an Accounts Payable & Expenses Administrator to join our fast‑paced Accounts Payable, Receivable and Expenses team within the NSS Business Management function.

In this role, you will play a vital part in ensuring suppliers, partners and employees are paid accurately and on time, helping financial processes run smoothly across the business. You will support teams delivering mission‑critical programmes across our UK Cyber & Intelligence and UK Defence businesses, where precision, trust and accountability really matter. Every detail you manage helps keep these essential programmes moving.

• Processing multi‑currency purchase invoices, with and without purchase orders, ensuring approvals meet internal policy
• Handling intercompany invoices, direct debits and settlements
• Working closely with vendors and internal teams to resolve invoice queries efficiently
• Investigating discrepancies, updating records and maintaining accurate audit trails
• Supporting payment runs and reconciling supplier accounts
• Managing a high‑volume shared inbox to support day‑to‑day operations
• Reviewing and approving employee expenses in line with policy and HMRC guidelines
• Providing guidance on VAT, business travel and expense processes

• Experience using SAP or a similar financial system
• Proven experience liaising with suppliers or customers to support payment processes
• Strong written and verbal communication skills
• Excellent attention to detail and time‑management skills

• Experience in Accounts Payable, Accounts Receivable or Expenses administration

If you don’t meet every requirement but feel you have the skills, curiosity and mindset to succeed, we encourage you to apply.

Due to the nature of our work, you must be a UK national
.

You must be able to gain and maintain SC‑level UK Government security clearance
. Our recruitment team is on hand to answer questions and guide you through the process at .

• Flexible and hybrid working options, including an optional compressed fortnight
• Private healthcare
• Cash health plan
• Holiday buy and sell options
• Career development programmes and mentorship
• Performance‑based bonus opportunities

Every day, we help build a more secure and connected world – from protecting critical data to enabling modern defence capabilities across the UK and beyond.

Every voice matters here. Our inclusive culture, employee networks and community partnerships ensure you can bring your whole self to work.

Shape a career that works for you, with access to diverse roles, development pathways and wellbeing support to help you grow and thrive.

Northrop Grumman is committed to hiring and retaining a diverse workforce, and encourages individuals from all backgrounds and all abilities to apply and consider becoming a part of our diverse and inclusive workforce.

Job Category:
Business Management