Associate Director - Wastewater

Tetra Tech; Manchester; Hybrid; GBP 100,000 - 140,000; Full time

Job summary

Tetra Tech's Water Consultancy is seeking an Associate Director - Wastewater Asset Planning and Modelling to lead a growing UK team and act as technical lead on major frameworks. Based in Warrington or Manchester, you will oversee asset planning and modelling through feasibility to detailed design, with a focus on framework delivery, client leadership and team development.

Over time you will enhance delivery capability, improve consistency, and strengthen client confidence through high-quality

Qualifications

• Degree in a relevant technical discipline is essential.
• Postgraduate qualification desirable.
• Chartered status or working towards chartership preferred.
• Membership of CIWEM, ICE or IWater encouraged.

Responsibilities

• Lead a national wastewater consulting team across UK frameworks and ensure high-quality outputs.
• Provide technical assurance, governance, and programme coordination on major projects.
• Support bids, proposals and senior-level client relationships.
• Develop and shape catchment strategies from feasibility to detailed design.

Skills

Team leadership

Framework delivery

Asset planning & modelling

Commercial governance

Client development

Education

Degree in a relevant technical discipline

Postgraduate qualification desirable

Chartered status or working towards chartership

Membership of CIWEM/ICE/IWater encouraged

Tools

InfoWorks ICM

Job description

Lead a national wastewater consulting team and shape framework delivery across the UK

Purpose and scope of the role:

Tetra Tech's Water Consultancy is seeking an Associate Director - Wastewater Asset Planning and Modelling to lead a growing Wastewater Consulting team and act as technical lead on major frameworks across the UK. Based in Warrington or Manchester, you will oversee the delivery of wastewater asset planning and modelling, and catchment strategies from early feasibility through to detailed design, with a particular focus on framework delivery, client leadership and team development. You will be responsible for technical assurance, programme coordination, commercial performance, HSE, quality and governance across significant projects, while supporting bids, proposals and strategic client relationships.

Your impact in this position:

Initially, you will provide strong technical and team leadership across active framework commissions. Over time, you will build capability within the team, improve delivery consistency and strengthen client confidence through high-quality outputs and responsive service. Longer term, you will help shape the direction of wastewater asset planning and modelling delivery across the UK, influence investment decisions, and lead innovative, resilient and low-carbon solutions for major water industry clients.

Core Capabilities:

• Team leadership - Proven ability to lead, mentor and develop wastewater consulting professionals, building a collaborative and high-performing team culture.
• Framework delivery - Experience acting as a lead on multi-client frameworks, managing priorities, relationships and technical outputs across concurrent commissions.
• Asset planning and modelling expertise - Strong technical background in InfoWorks ICM, model build, verification, calibration and the development of catchment strategies.
• Commercial and governance oversight - Ability to manage programme performance, commercial risk, quality assurance and HSE responsibilities on complex projects.
• Client and business development - Confident in leading client conversations, supporting bids and proposals, and representing the business at senior level with clarity and credibility.

Skills, qualifications and experience:

A degree in a relevant technical discipline is essential; a postgraduate qualification is desirable. Chartered status, or working towards chartership, is preferred, along with membership of a relevant professional body such as CIWEM, ICE or IWater.

Work patterns and locations:

This role can be based in Warrington or Manchester, with hybrid working supported. Regular office, client and site visits will be expected to maintain strong collaboration and delivery across UK frameworks. Flexible working arrangements can be considered.

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.