Executive Assistant

Defence Permanent / Support Functions Newcastle upon Tyne United Kingdom 17/03/26 On site
ABOUT ASSYSTEM

Assystem is an international company with one mission: accelerate the energy transition around the world.

Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.

We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.

Drawing on more than 55 years’ experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.

To ensure a viable, efficient, and reliable energy future for all

JOB DESCRIPTION

We are seeking an exceptional Executive Assistant to provide strategic and operational support to Director-level leadership within a dynamic and fast-paced organisation.

At Assystem, we support the delivery of complex infrastructure and energy programmes that contribute to the global transition to low carbon energy.

This is a pivotal role suited to a highly capable EA who operates as a trusted partner to senior leaders , anticipating needs, enabling effective decision-making, and ensuring priorities are executed seamlessly. This role enables leadership effectiveness by ensuring Directors can focus on delivering complex programmes , strategic priorities, and organisational performance.

Your missions

Provide high-level executive support to Directors, managing complex and evolving priorities
️ Oversee strategic diary management, ensuring alignment with business objectives
Prepare high-quality briefings, reports, and presentations for senior meetings
Coordinate leadership meetings, governance activity, track actions arising from leadership meetings and ensure timely follow up
Act as a professional liaison between Directors, senior stakeholders, and external partners
Manage confidential communications and sensitive information with discretion
Support planning, projects, and cross-functional initiatives as required

• ️ Identify opportunities to improve administrative and operational efficiency and ways of working

Manage and prioritise email and communications on behalf of Directors where appropriate
Act as a gatekeeper for Directors’ time, ensuring focus on strategic priorities
Coordinate leadership events, workshops and offsite meetings where required
Arrange complex travel itineraries and logistics where required
Occasional UK travel may be required to support leadership meetings or events

MY PROFILE

Significant experience supporting senior leadership at Director or Executive level
A proactive, solutions-oriented approach with strong commercial awareness
Exceptional organisational and prioritisation skills
Confident communicator with strong stakeholder management capability
️ Demonstrated ability to operate with discretion, judgement, and professionalism

• Highly adaptable, resilient, and comfortable working at pace

Advanced proficiency in Microsoft Office

Why Join Assystem?

Work on nationally significant, technically complex projects
Strong career development and progression opportunities
25 days annual leave (buy and sell leave scheme)
Opportunity to make a real impact in energy, defence and infrastructure

**Security clearance**

This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance.

Due to the nature of work this role will be delivering and for the protection of certain assets, the successful candidate has to be a UK national or in MoD approved cases a Dual National from a non-ITAR country.

We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people’s ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.