Project Planner

Working within our high-performing Planning & Scheduling team, as part of the wider Project Controls function, you'll play a key role in delivering major new build and refurbishment projects where precision planning, effective scheduling and proactive programme controls are critical to success.

As an experienced Project Planner, you'll be responsible for developing, maintaining and analysing project schedules throughout the full project lifecycle. You'll support NEC-compliant programme submissions, undertake programme assurance activities, and contribute to recovery planning and performance monitoring across complex engineering and construction environments.

Your Impact in this Position

This is an opportunity to influence critical infrastructure delivery by providing robust, data-driven planning expertise. You'll work closely with project and programme teams to improve project certainty, identify risks early and drive informed decision-making.

You'll apply first-principles planning techniques, develop risk-adjusted schedules and support integrated programme delivery across multi-disciplinary teams. Your ability to build strong stakeholder relationships, communicate effectively and solve complex scheduling challenges will directly contribute to successful project outcomes.

Core Capabilities

• Programme Development & Control: Develop, maintain and optimise complex project schedules across major infrastructure programmes. Produce NEC-compliant programmes and support programme acceptance activities. Monitor progress, analyse performance, forecast schedule outcomes, identify emerging schedule variance and support corrective action and recovery planning.
• Planning & Scheduling Expertise: Build programmes from first principles for large-scale construction and engineering projects. Apply three-point estimating, time risk allowance and risk-adjusted scheduling techniques. Deliver planning solutions for projects with significant non-routine requirements.
• Programme Assurance & Risk Readiness: Conduct schedule integrity reviews using DCMA and CIOB scheduling principles. Review supply chain and third-party schedules to ensure programme quality and compliance. Prepare and assure schedules for quantitative schedule risk analysis, working collaboratively with Risk Managers to ensure programmes are appropriately structured, logic-linked, quality-assured and risk-ready.
• Technical Systems & Tools: Use industry-standard planning and programme management software including Primavera P6, Microsoft Project, Asta Powerproject and Oracle Primavera Cloud (OPC). Apply digital tools and data-driven insights to improve schedule quality, programme performance, forecasting and decision-making. Work collaboratively with Risk Managers where specialist schedule risk analysis tools are required.
• Collaboration & Stakeholder Engagement: Build strong relationships across project, engineering and programme teams. Communicate complex scheduling information clearly to technical and non-technical stakeholders. Bring an agile, solutions-focused approach to project delivery challenges

Training, Qualifications & Experience

You'll ideally hold MCaSA, MCIOB, MAPM or equivalent professional accreditation, alongside proven experience in project planning within major infrastructure or other complex engineering and construction environments. Experience within defence, nuclear, water or other highly regulated sectors would be highly advantageous. Experience preparing and assuring programmes for quantitative schedule risk analysis would also be beneficial.

Working Environment

This role offers flexibility alongside collaboration within a technically focused engineering environment. Hybrid working arrangements are available, with a blend of office, client-site and remote working depending on project requirements. Regular collaboration with project teams is expected, including approximately 2-3 days per week in the office or on site.

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