Glenfield Invicta is a UK-based engineering company that specialises in water flow control solutions, particularly for critical national infrastructure and are part of the AVK Group, a global leader in water control systems and valve technology. About the role: We are looking for an experienced and driven Project Manager to head up a major infrastructure project at Portsmouth Naval Base, managing the replacement of penstocks. This is a high-profile, long-term project expected to span 2–3 years with a large total value to our business. It’s a unique opportunity to lead a strategically significant scheme in a historic and operationally critical setting. As the dedicated on-site lead, you'll oversee all aspects of project execution from planning and procurement to handover ensuring work is delivered safely on time, and within budget. You'll also play a pivotal role in building and leading a new on-site team, including five of our own Site Technicians, while managing a range of specialist subcontractors across demolition, civils, electrical, scaffolding, craneage, and structural steelwork. Candidates must be eligible to obtain Security Clearance (BPSS/SC) to work on a Royal Navy site. What You'll Be Doing Project & Operational Leadership Act as the single point of accountability for day-to-day delivery of the project. Oversee all site-based activity and coordinate with Operations, Sales, Finance, and QHSE teams. Develop and manage resource plans, including recruitment and onboarding of site staff. Manage subcontractors to ensure all work packages are delivered to specification and standards. Maintain regular communication and positive working relationships with the customer. Health, Safety & Compliance Uphold the highest safety standards in line with company policy and industry regulations. Prepare and approve RAMS and other H&S documentation with support from internal teams. Ensure site works are carried out in full compliance with contractual and legal obligations. Commercial & Strategic Delivery Monitor budgets, timelines, and milestones, reporting progress internally and to the client. Ensure timely and accurate submission of timesheets, expenses, and invoices. Support forecasting and revenue recognition by sharing clear and consistent project updates. Adopt a continuous improvement mindset to drive efficiency and excellence. What We're Looking For 5 years’ experience managing large-scale infrastructure or utility projects. Strong leadership experience, ideally including the recruitment and management of site-based teams. Proven track record of successfully delivering complex works involving multiple subcontractors and managing projects of around £10million value. Excellent communication, organisational, and stakeholder management skills. Deep understanding of site safety, compliance, and quality control ideally within confined space. Why Join Us? Be at the forefront of a landmark naval infrastructure upgrade. Take ownership of a high-value project with full end-to-end delivery responsibility. Shape and lead your own site team in a respected and growing organisation. Work in a collaborative culture with strong values around safety, integrity, and delivery excellence. A culture of promoting personal development, with ample opportunity for training and earning qualifications A culture of shared values, goals, attitudes, and business growth Employee Assistance Programme (Welfare and Wellbeing) 33 days holiday (including statutory Public Holidays) Life Assurance plan (x3) Company pension plan Discounts and cashback across many high-street and online retailers (Supermarkets, Entertainment, Fashion, Days Out, Technology, Home, and Travel)