Location
London, with a minimum of 4 days per week onsite at Gatwick Airport

Hours
Full Time

Salary
Negotiable

About the Role
Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets. With over 34,000 people across more than 30 countries, we are dedicated to improving quality of life by solving complex challenges together.
Join Arcadis and play a key role in one of the UK's most significant aviation infrastructure programmes. We are seeking an experienced Senior Cost Consultant to support the delivery of the Gatwick Airport Northern Runway Programme, a major project enhancing airport capacity and passenger experience while driving long-term economic growth.
As part of our Mobility Commercial Management team, you will provide expert cost management services throughout the project lifecycle. You will partner closely with client teams, contractors, and delivery partners to ensure robust commercial performance and successful project outcomes.
This role requires a strong onsite presence, with a minimum of 4 days per week at Gatwick Airport, enabling direct engagement with stakeholders and delivery teams.

Role Accountabilities:
- Lead cost management activities across major project packages from feasibility through to completion
- Develop and manage cost plans, estimates, budgets, and financial reporting
- Monitor project performance, identify risks and opportunities, and provide commercial insights to support decision-making
- Support contract administration and commercial management activities under NEC contracts
- Build strong relationships with clients, contractors, and project stakeholders
- Provide guidance and mentoring to junior team members
- Support governance, assurance, and reporting processes to ensure successful project delivery

Experience
- Significant experience delivering cost management services across major infrastructure projects
- Experience within aviation, rail, highways, or other complex capital programmes
- Strong knowledge of NEC3 and NEC4 contracts, including compensation events and change management processes
- Demonstrable stakeholder management and client-facing experience
- Ability to manage workstreams independently whilst contributing to wider programme objectives

About you
Proactive and confident professional with excellent communication and relationship-building skills. Able to work effectively onsite and collaborate with diverse teams to drive project success. Committed to mentoring junior colleagues and supporting a positive team environment.

Qualifications
- Degree qualified in Quantity Surveying or a related discipline
- Chartered status (MRICS) or working towards chartership
- CSCS card holder, or willing to obtain