Project Manager

Tetra Tech, Inc.; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

Tetra Tech, Inc. is seeking a Project Manager to lead defence infrastructure projects from feasibility through to commissioning. You will steer multidisciplinary teams, manage cost, risk and schedule, and ensure safe, timely delivery across buildings and civils.

Ideal candidates will haveExperience in defence projects, familiarity with NEC/NEC4, and be eligible or cleared for security clearance. This role may involve travel and hybrid/onsite work arrangements.

Qualifications

• Proven project management experience in complex technical environments.
• Experience with defence sectors is advantageous.
• Familiarity with project controls, risk and change management.
• Experience coordinating multidisciplinary teams and stakeholders.
• SC clearance or suitability to obtain clearance is favourable.

Responsibilities

• Lead defence infrastructure projects through full lifecycle from feasibility to commissioning.
• Coordinate multidisciplinary teams and manage commercial requirements.
• Maintain focus on safe, timely and high-quality delivery.
• Develop and maintain programmes, risk registers and quality plans.

Skills

Project Delivery

Defence Experience

Leadership

Commercial & Finance

Stakeholder Communication

Job description

Build your career delivering infrastructure that matters. Join Tetra Tech's established Defence team and lead complex, high-profile projects for the Defence Infrastructure Organisation (DIO), working alongside experienced technical specialists across multidisciplinary programmes.

Purpose & Scope of the Role

As a Project Manager, you'll take ownership of defence infrastructure projects through the full lifecycle, from feasibility and planning through construction to commissioning. Working across buildings and civil engineering programmes, you'll coordinate multidisciplinary teams, manage commercial and contractual requirements, and maintain a clear focus on safe, timely and high-quality delivery.

Your Impact in this position

You'll create the structure, momentum and collaboration needed to keep projects moving. By managing programme, cost, risk, quality, change and stakeholder relationships, you'll help ensure contractual commitments are met while providing clients with confidence in project performance.

You'll also support a high-performing team culture, building strong relationships and helping colleagues achieve excellent outcomes.

5 Core Capabilities

• Project Delivery & Controls - Lead complex projects to programme and budget, managing resources, milestones, change, risk and quality throughout the project lifecycle.
• Technical & Defence Experience - Apply your experience of complex infrastructure projects, ideally within defence, buildings or civils, where regulatory compliance and effective risk management are critical.
• Leadership & Collaboration - Bring multidisciplinary teams together, establish effective ways of working and support colleagues through coaching, motivation and clear direction.
• Commercial & Financial Management - Confidently manage budgets, cost control, forecasting and contractual matters, using sound judgement and effective negotiation to achieve positive outcomes.
• Stakeholder & Project Communication - Build trusted client relationships, communicate complex information clearly and develop robust project documentation, including programmes, risk registers, execution plans, stakeholder plans and quality plans.

Training, Qualifications & Experience

You'll bring proven project management experience within a complex technical environment. NEC3/NEC4 experience, a recognised project management qualification or relevant professional accreditation is advantageous. Familiarity with MS Project, Excel, Viewpoint for Projects and CEMAR is beneficial. You'll need SC clearance, or be suitable to obtain it, and a valid driving licence is desirable.

Working Environment

Projects are located across East Anglia, Northamptonshire, Gloucestershire and Yorkshire, with travel to project sites required. The specific office attendance expectations and availability of hybrid, remote or flexible working arrangements are not defined in the current role information and should be confirmed as part of the recruitment process.

About Tetra Tech

Tetra Tech is a leading provider of consulting and engineering services working across the full project lifecycle worldwide. We have a wide range of expertise across our teams, providing a global support network with a personalised approach to client relationships to better understand where we can add value. We provide a collaborative environment that supports individual performance, innovation, and creativity.

We support public and private sector clients on local, national, and international projects to deliver sustainable and resilient solutions. Our operations in the UK, Ireland, and the Netherlands include more than 6,000 employees who are Leading with Science to solve our clients' most complex problems.

In alignment with the Equality Act 2010, we will make reasonable adjustments to support candidates and employees requiring additional arrangements. This could include adaptations to work schedules, training approaches, or the physical workspace. Please inform us if you need any accommodations during the recruitment process or in your day-to-day role