Principal Commercial Officer

Summary You will play a leading role in the commercial management of complex defence programmes, supporting activities from early lifecycle through to contract delivery. This position combines business winning, contract management and stakeholder engagement, giving you influence across bidding strategy, negotiations and programme execution. You will help shape commercial decisions, protect contractual interests and ensure successful delivery against customer commitments.Where you will workHertfordshire-based, hybrid working with 2 to 3 days on-site depending on workload classificationWhat you will be doing • Supporting the full route to contract, including bid activity, proposal development and cross-functional coordination • Acting as a key contributor to business winning activities, ensuring commercial strategies maximise organisational interests • Managing contracts across their lifecycle, including change management, administration and issue resolution • Supporting and leading negotiations to secure agreement on terms, conditions and contract amendments • Building and maintaining strong relationships with customers and industry partners, promoting collaboration • Acting as a commercial interface with internal teams and external stakeholders • Reporting on portfolio progress to senior stakeholders and participating in reviews and customer meetings • Applying commercial governance and best practice across programmes • Managing commercial information systems and ensuring ..... full job details .....