Principal Project Manager (Infrastructure Management)

Company: ASSYSTEM

Location: Helensburgh

Posted: May 10th, 2026

Principal Project Manager (Infrastructure Management)

Full-time

ASSYSTEM Job: Project Management

Type of contract ASSYSTEM: Permanent

ASSYSTEM Sector: Defence

Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements.

Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

Department Overview

This team is responsible for informing, co-ordinating and integrating all infrastructure projects within the client site, delivered via a number of Infrastructure delivery programmes.

Position Overview

The Infrastructure Manager post forms part of the Waterfront South (WS) department within the client Directorate and is responsible for supporting the Senior Infrastructure Manager in overseeing delivery of infrastructure projects that sit within the WS Area of Responsibility. The postholder will support the administration of projects through the use of robust governance frameworks, management tools and processes.

Key Responsibilities

Skills / experience required for this role

Why Join the Switchers Community?

Security: The incumbent of this role must be a minimum of SC cleared and a sole UK national.

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.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.

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