Job Description
Contract Commercial Manager (Defence)
Req ID:  57711
Posting Start Date:  15/04/2026
Job Function:  Sales and Commercial
Division:  UK Business
Job Location:  GBR Bristol CTRL TE, GBR Chippenham Methuen Park House, GBR Reading ZSC/ATE
Advertised Salary:  Competitive

About the role

The Contract Commercial Manager (Defence) plays a critical role in protecting and maximising the value of BT’s defence contracts.


Working as part of the BT Defence Commercial Team, this role is responsible for the post‑award commercial and contract management of a major defence telecommunications contract, alongside supporting smaller defence contracts.


You’ll act as a trusted commercial advisor to both the customer and internal stakeholders, ensuring contractual compliance, effective governance, and robust commercial decision‑making throughout the contract lifecycle.

What you’ll be doing

- Working closely with customer’s commercial team and internal stakeholders across Contract Management, Finance, Sales, Design/Delivery supporting effective management of defence contracts.
- Managing contract changes end‑to‑end, including contributing to the drafting of Change Proposals and ensuring contractual, financial and governance requirements are met.
- Supporting the negotiation and agreement of contract variations, extensions and amendments, providing fact‑based commercial input and recommendations.
- Providing ongoing commercial advice and guidance to non‑commercial colleagues to support service delivery, new service proposals and change activity.
- Ensuring strong commercial governance by supporting and attending internal and joint customer governance meetings, agreeing commercial positions and deputising for colleagues where required.
- Maintaining accurate, up‑to‑date contract documentation, including conformed contract versions, deliverables and associated service documentation.

Essential Skills / Experience

Experience in commercial or contract management, ideally within a regulated or government‑facing environment.
Managing contract changes, drafting amendments and supporting change control processes.
Good understanding of contract governance, risk, issue and change management principles.
Ability to take complex commercial and contractual information and provide clear, practical advice to stakeholders.
Building effective working relationships with customers and internal teams.
Eligible and willing to hold Security Check (SC) clearance (mandatory).

Desirable Skills / Experience

Experience working within the Defence, Government or Telecommunications sectors.
Experience supporting commercial governance forums and advising on commercial matters in customer meetings.
Experience working within a matrix organisation, collaborating across multiple business functions.
Understanding of commercial risk and value protection within long‑term service contracts.
Existing Developed Vetting (DV) clearance or previous experience working in a security‑cleared environment.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life. You can design the package to suit you and your lifestyle. Your core benefits include:

  • 10% on target annual bonus
  • Access to an online private GP 24/7 for you and your immediate family 
  • Market-leading paid carers leave with up to 2 weeks off 
  • Equalized maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
  • Discounted EE and BT products, including mobile and broadband
  • Market leading Pension scheme – 5% from you and 10% from us
  • Holiday purchase scheme


With over 180 years of heritage, BT Business has brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers in the UK


We’re a leader for secure connectivity and collaboration platforms for businesses of all shapes and sizes, from big household names and government departments, right through to sole traders and new start-ups. But it’s not just the technology that matters, it’s what it can do to help them build stronger, smarter, more secure businesses.


We are Customer-First Challengers, who are Committed, Clear and Connected. We value diversity and inclusion and believe in making a positive impact. We connect for good by championing digital inclusion and equipping people, businesses, and communities with digital skills to thrive.


As a member of our team, you will be part of an organisation that celebrates difference, fosters innovation and provides you with opportunities to be your best. With millions of businesses relying on us daily, joining BT means you can be part of a diverse and multi-skilled team that makes a significant impact to society.