Principal Project Manager

Company Description️ð¡ About Assystem 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.

Job Description ð The Job Mission This hybrid role is suited to candidates able to commute to London and travel to Ipswich regularly, or relocate nearby, with support available. You will lead delivery of civil works packages within a major nuclear infrastructure programme. Working closely with your future team, you will oversee performance, integration and successful project execution.
• Lead multidisciplinary project teams delivering complex civil engineering scope across major contracts.

• Manage budgets, schedules, risks and quality assurance across large-scale infrastructure packages.

• Drive stakeholder engagement across internal teams, suppliers and delivery partners.

• Ensure alignment between design deliverables, schedules and contract requirements.

• Oversee contract administration including variations, early warnings and compensation events.

• Manage risks and opportunities, ensuring timely mitigation and escalation where required.

• Lead configuration and design change management across project lifecycle stages.

• Coordinate delivery across engineering, procurement, construction and commissioning phases.

• Apply earned value management and performance monitoring to track project delivery.

• Promote continuous improvement through lessons learned and knowledge sharing practices

Qualificationsð  Essential Skills
• Degree in engineering, construction or related discipline with strong technical foundation.

• Proven experience delivering large-scale infrastructure or heavy civil engineering projects.

• Strong commercial expertise including contract management and cost control.

• Experience managing risks, quality and programme delivery in complex environments.

• Proficiency in earned value management, planning and project performance tools.

• Strong leadership and stakeholder management skills across multidisciplinary teams.

• Technical understanding of engineering, procurement and construction delivery methods.

• Excellent analytical, organisational and communication skills.️ Desired Skills
• Experience in nuclear or highly regulated infrastructure environments.

• Background in heavy civils, tunnelling or major construction projects.

• Knowledge of EPR design and nuclear construction methodologies.

• Professional chartership or equivalent recognised engineering status.

• Experience working with NEC, FIDIC or similar contract frameworks.

Additional Informationð Why Apply?

Join Assystem and be part of the energy transition, working on one of the most significant nuclear projects in the world. You’ll gain valuable experience, collaborate with international teams, and play a crucial role in shaping the future of energy engineering.

Benefits include:ð¡ Hybrid Working Opportunity
ð Flexible working hours
ð¡️ Pension scheme (8% company contribution / 4% personal contribution)
ð️ 25 days’ paid annual leave + bank holidays + option to buy or sell days
ð¼ Professional fees reimbursed
ð Employee referral scheme
ð Competitive Sick Pay – Support when you need it
ð Income Protection & 3x Salary Death-in-Service Cover
ðª Free Digital Gym Access – Expert-led fitness classes
ð 24/7 Employee Support Line – Mental health, financial & legal help

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.ð Join us to shape the future of energy engineering with a global leader in nuclear projects.
Apply now and become a part of our innovative…