Senior Project Manager; Defence Infrastructure

Company Description Work with Us. Change the World.

At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, our work helps people and communities thrive. We are the world's trusted infrastructure consulting firm, partnering with clients to solve the world’s most complex challenges and build legacies for future generations.

There has never been a better time to be h accelerating infrastructure investment worldwide, our services are in great demand. We invite you to bring your bold ideas and big dreams and become part of a global team of over 50,000 planners, designers, engineers, scientists, digital innovators, program and construction managers and other professionals delivering projects that create a positive and tangible impact around the world.

We're one global team driven by our common purpose to deliver a better world. Join us.

Job Description Start Here. Grow Here.

Are you a Project Manager or Senior Project Manager with experience delivering infrastructure projects within Defence or similarly regulated environments? AECOM’s Defence team is growing across the East Midlands and Anglia region, and we are seeking Project Managers and Senior Project Managers to support a strong pipeline of secured and upcoming work across some of the UK’s most critical and high-profile programmes, supporting the Armed Forces across the UK and overseas.

Current and upcoming projects include major infrastructure programmes at RAF Brize Norton and RAF Lakenheath, alongside wider opportunities through the CCS2 framework. This provides exposure to both UK MOD and US Visiting Forces environments across design and construction.

Our work spans the full Defence estate, from accommodation, training, and operational facilities to secure technology, aviation, and specialist infrastructure. As part of our integrated delivery team, you will help shape, plan, and deliver projects that directly support UK Defence capability, ensuring the Armed Forces have the facilities required to operate effectively and safely.

The Role As a Project Manager / Senior Project Manager (Defence Infrastructure), you will play a key role in delivering complex infrastructure projects across the Defence estate.

You will take ownership of projects or defined work packages across the full RIBA lifecycle, from early-stage development through to construction and handover.

Working within multi-disciplinary teams, you will manage NEC contracts (PSC and ECC), engage directly with DIO and end users, and drive delivery to programme, cost, and quality requirements.

Key Responsibilities Lead the delivery of Defence infrastructure projects or defined work packages across all RIBA stages

Act as NEC Project Manager or Client Representative, managing contractual processes and commercial positions

Interface directly with DIO, TLBs, site users, and contractors in live operational environments

Manage programme, cost, and risk, ensuring robust project controls are maintained

Build and maintain strong client relationships across multiple stakeholders

Support and mentor junior team members, contributing to team capability and growth

Ensure compliance with MOD governance, approvals processes, and security requirements

Minimum Requirements Experience delivering infrastructure projects, ideally within MOD, DIO, or similarly regulated environments

Strong working knowledge of NEC3/NEC4 contracts (PSC and/or ECC)
Experience working within multi-disciplinary teams across design and construction

Ability to manage stakeholders across client, contractor, and end-user groups

Strong communication and organisational skills

Eligible for UK Security Clearance (SC or higher)
Why Join AECOM…