Job Description

Project & Senior Project Managers

Tetra Tech are looking for Project & Senior Project Managers forClient Side Water Sector. Join a team delivering complex, high-value projects that shape essential water infrastructure. This is an opportunity to take ownership of major capital investment work from planning and design through to commissioning, ensuring outcomes that are safe, compliant, and delivered to the right standard.

Purpose and Scope of the Role

We are seeking Project and Senior Project Managers to provide client-side leadership across major water sector projects and capital programmes. You will act as the Contracting Entity’s representative, managing scope, budget, schedule, risk, procurement, and contract performance across the full project lifecycle.

Day to day, you will coordinate multidisciplinary teams, work closely with technical leads, design consultants, contractors, and external service providers, and ensure interfaces are actively managed. You will develop and maintain project execution plans, cost estimates, risk registers, monthly progress reports, and governance outputs, while also supporting stakeholder consultation and contract administration. The role requires confidence in managing complex delivery environments where quality, compliance, and commercial control are critical.

Your Impact in This Position

In the short term, you will establish strong control over live projects, build trusted relationships with clients and delivery partners, and quickly add value through robust planning and clear reporting.

In the medium term, you will help drive consistency across delivery, improve project controls, and support the successful progression of significant water sector investment programmes.

Over the longer term, this role offers the chance to broaden your leadership across major infrastructure delivery, develop deeper client-side expertise, and progress into more senior programme or portfolio leadership.

Core Capabilities for Success

Project Delivery and Control

• You will bring strong project management capability across scope, schedule, cost, risk, and change control, with the discipline to keep complex projects moving predictably and in line with governance requirements.

Technical Water Sector Expertise

• You will apply practical water engineering knowledge to support design review, delivery decisions, and technical coordination, ensuring solutions are buildable, compliant, and aligned to project objectives.

Commercial and Contract Management

• You will have a sound understanding of contract administration, procurement, variations, and commercial reporting, with the confidence to protect client interests and support informed decision making.

Stakeholder and Supplier Engagement

• You will work effectively with clients, consultants, contractors, and internal teams, communicating clearly, managing expectations, and maintaining constructive relationships throughout delivery.

Planning, Reporting and Assurance

• You will produce clear, accurate reporting and maintain robust project controls, with the ability to identify issues early, track progress, and support effective oversight through tools and systems such as Oracle Primavera P6 where applicable.

Qualifications and Training

Essential

• Relevant third level qualification in engineering or a related discipline.
• Significant experience in the construction, infrastructure, or water sector.
• Strong knowledge of health and safety legislation and project management methodologies.
• Demonstrable experience delivering projects to time, budget, and specification.

Desirable

• Project management qualification such as PMP or PRINCE2.
• Experience operating in a client-side project management role.
• Working knowledge of Oracle Primavera P6.
• Experience on site as well as in office-based project environments.

Work Patterns and Locations

This role is client and project focused, with a balance of office, site, and stakeholder-facing work. Hybrid or flexible working may be available depending on project and client requirements. Expected office attendance and location patterns will be confirmed at offer stage and aligned to the needs of the role.

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Why join 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.

Recruitment Agencies

We have a Preferred Supplier List of trusted partners to assist us when required and do not acknowledge any speculative CVs or unsolicited candidate introductions from agencies not on this list and any submitted will be taken as a gift. Please refer to the careers page on our website if you require any further information.