Thornton Tomasetti applies engineering and scientific principles to solve the world’s challenges.

An independent organization of creative thinkers and innovative doers collaborating from offices worldwide, our mission is to bring our clients' ideas to life and, in the process, lay the groundwork for a better, more resilient future. We provide support and opportunities to our employees to achieve their full potential and cultivate a rewarding career.

The Role

Thornton Tomasetti is seeking an organised, proactive, and service-oriented Project Administrator to support our Romsey office, which forms part of our Protective Design & Security (PD&S) practice.

This is a varied role supporting the day-to-day operation of the office as well as our project teams, travel coordination, and security administration. You’ll work closely with colleagues across the Romsey office, the wider PD&S practice, and Thornton Tomasetti, helping ensure our people and projects have the administrative support they need.

You’ll be someone who enjoys taking ownership, managing multiple priorities, and being the person colleagues can rely on to keep things organised and running smoothly. Given the nature of our work, you’ll also need to be comfortable handling confidential and security-sensitive information with professionalism and discretion.

What You’ll Do

• Support the day-to-day administration and smooth running of the Romsey office.
• Coordinate office supplies, facilities, equipment, visitors, meetings, and general office logistics.
• Act as a helpful and responsive point of contact for office-related queries.
• Maintain accurate office records, registers, contact information, and filing systems.
• Support office events, meetings, hospitality, and internal communications.
• Provide administrative support to project teams, project managers, and the Office Manager.
• Assist with purchase orders, invoices, expenses, and other project-related administration.
• Maintain project documentation and handle project and client information accurately and confidentially.
• Arrange domestic and international travel, including flights, rail travel, accommodation, ground transportation, and meeting facilities.
• Provide administrative support to the Security Controller and wider PD&S practice.
• Maintain security-related records, registers, contact lists, documentation, and filing systems.
• Support security administration and processes, handling sensitive information with appropriate care and discretion.
• Work collaboratively with colleagues across the Romsey office, PD&S practice, and wider Thornton Tomasetti organisation.