Lead wastewater modelling that shapes resilient communities across Scotland and the UK
Purpose and scope of the role:Tetra Tech’s Water Consultancy is seeking a Principal Wastewater Modeller to build and lead a high-performing team of Wastewater Hydraulic Modellers, based in either Glasgow or Edinburgh. You will lead technical delivery across major UK frameworks, including Scottish Water, from feasibility through to detailed design. The role will involve defining catchment strategies, directing hydraulic modelling and design inputs, and ensuring robust HSE, quality and governance standards across multi-million-pound wastewater programmes. Day to day, you will manage modelling standards, commercial performance, resource planning and risk, while supporting bids, proposals and client engagement with water companies and delivery partners.
Your impact in this position:In the short term, you will strengthen modelling assurance and guide complex catchment interventions. Over time, you will develop and mentor a capable modelling team, improve workflows and help influence investment decisions that reduce pollution and flood risk. Longer term, you will have the opportunity to apply digital tools to improve delivery, and lead low-carbon, resilient solutions on significant wastewater programmes.
- Hydraulic modelling leadership– Proven expertise in InfoWorks ICM, model development, calibration and the delivery of robust catchment strategies across wastewater networks and frameworks.
- Technical assurance and governance– Ability to produce auditable, compliant modelling outputs while maintaining strong quality, HSE and governance controls.
- Commercial and programme performance– Experience managing forecasts, commercial risk, resources and contribution to bid and proposal development.
- Team leadership and client engagement– Track record of leading, mentoring and growing multidisciplinary teams, while communicating complex findings clearly to clients and stakeholders.
- Digital innovation and data fluency– Ability to drive improvement using GIS, Python, FME, Power BI or similar tools to automate workflows and support evidence-based decisions.
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 professional affiliation with CIWEM, ICE or IWater.
Work patterns and locations:This role is based in either Glasgow or Edinburgh, with hybrid working supported. Regular office, client and site visits will be expected to support collaboration, technical delivery and stakeholder engagement. Flexible working arrangements can be considered to help balance focused technical work with team and client interaction.
Purpose and scope of the role:Tetra Tech’s Water Consultancy is seeking a Principal Wastewater Modeller to build and lead a high-performing team of Wastewater Hydraulic Modellers, based in either Glasgow or Edinburgh. You will lead technical delivery across major UK frameworks, including Scottish Water, from feasibility through to detailed design. The role will involve defining catchment strategies, directing hydraulic modelling and design inputs, and ensuring robust HSE, quality and governance standards across multi-million-pound wastewater programmes. Day to day, you will manage modelling standards, commercial performance, resource planning and risk, while supporting bids, proposals and client engagement with water companies and delivery partners.
Your impact in this position:In the short term, you will strengthen modelling assurance and guide complex catchment interventions. Over time, you will develop and mentor a capable modelling team, improve workflows and help influence investment decisions that reduce pollution and flood risk. Longer term, you will have the opportunity to apply digital tools to improve delivery, and lead low-carbon, resilient solutions on significant wastewater programmes.
Core Capabilities:
- Hydraulic modelling leadership– Proven expertise in InfoWorks ICM, model development, calibration and the delivery of robust catchment strategies across wastewater networks and frameworks.
- Technical assurance and governance– Ability to produce auditable, compliant modelling outputs while maintaining strong quality, HSE and governance controls.
- Commercial and programme performance– Experience managing forecasts, commercial risk, resources and contribution to bid and proposal development.
- Team leadership and client engagement– Track record of leading, mentoring and growing multidisciplinary teams, while communicating complex findings clearly to clients and stakeholders.
- Digital innovation and data fluency– Ability to drive improvement using GIS, Python, FME, Power BI or similar tools to automate workflows and support evidence-based decisions.
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 professional affiliation with CIWEM, ICE or IWater.
Work patterns and locations:This role is based in either Glasgow or Edinburgh, with hybrid working supported. Regular office, client and site visits will be expected to support collaboration, technical delivery and stakeholder engagement. Flexible working arrangements can be considered to help balance focused technical work with team and client interaction.
#LI-MM1 #LI-Hybrid #Water
Whyjoin Tetra Tech?TetraTech is a leading provider of consulting and engineering services workingacross the full project lifecycle worldwide. We have a wide rangeofexpertiseacross our teams, providing a global support networkwith a personalised approach to client relationships to better understand wherewe can add value.We provide a collaborative environment that supportsindividual performance, innovation, and creativity.
Wesupport public and private sector clients on local, national, and internationalprojects to deliver sustainable and resilient solutions. Our operations in theUK, Ireland, and the Netherlands include more than 6,000 employees whoareLeading with Science®to solve our clients’ most complexproblems.
In alignment with the Equality Act 2010, we will makereasonable adjustments to support candidates andemployeesrequiringadditionalarrangements. This could includeadaptations to work schedules, training approaches, or the physical workspace.Please inform us if you need any accommodations during the recruitment processor in your day-to-day role.
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