Principal Wastewater Modeller

AECOM; Chesterfield; On-site; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Hybrid working model

Career development resources

Job summary

Doist is seeking a Principal Wastewater Modeller to join our Water Team in the UK or Ireland with a flexible hybrid model. You will lead wastewater modelling across projects, coordinating with public and private sector clients and delivering robust solutions for flood risk, drainage strategies and infrastructure development.

You will mentor colleagues, oversee technical quality, and contribute to bids and business development while advancing industry standards through best practices guidance.

Qualifications

• Experience leading wastewater modelling projects.
• Proficiency with InfoWorks ICM or similar platforms.
• Ability to mentor junior staff and contribute to bids.
• Strong data analysis and reporting skills.

Responsibilities

• Lead development, calibration and verification of wastewater models (InfoWorks ICM or similar).
• Provide technical oversight across multiple projects, guiding teams under general direction.
• Undertake and oversee tasks related to hydrology and groundwater for wastewater modelling studies.
• Deliver assignments across hydrology and related disciplines with defined project terms and reviews.
• Analyze complex datasets and modelling outputs, preparing high-quality technical reports and client deliverables.
• Monitor data to assess upstream impacts on wastewater systems and ensure regulatory compliance.
• Act as technical lead on major frameworks, supporting planning, storm overflow reduction and network resilience.
• Mentor junior staff and contribute to bids and business development.

Skills

Project leadership

Technical modelling

Data analysis

Team mentoring

Regulatory compliance

Tools

InfoWorks ICM

Job description

Overview

Start here. Grow here. Join our dynamic Water Team as a Principal Wastewater Modeller. You can be based in one of our UK or Ireland offices with a flexible hybrid working model. You will play a key role delivering water projects across the UK and internationally, including flood alleviation schemes, pollution reduction, and infrastructure developments. Our modelling team is integrated with wider project teams to develop comprehensive solutions, working with public and private sector clients. We deliver Flood Risk Assessments, Drainage Strategies, Outline Business Cases, hydraulic models, and detailed designs. We aim to shape industry standards by advising and developing guidance that benchmarks best practices.

Responsibilities

• Lead the development, calibration and verification of wastewater network models (e.g., InfoWorks ICM or similar platforms).
• Provide technical oversight and quality assurance across multiple projects, guiding wider project teams under general direction.
• Undertake and oversee technical and administrative tasks of limited to moderate complexity related to hydrology and groundwater investigations to inform wastewater modelling studies.
• Deliver assignments spanning the broader field of hydrology and related technical disciplines, working to defined project terms with appropriate professional review.
• Analyse complex datasets and modelling outputs, preparing clear, high-quality technical reports and client deliverables.
• Monitor and interpret data to assess the impacts of upstream activities on wastewater systems and the wider environment, ensuring compliance with permits and regulatory conditions.
• Act as technical lead on major frameworks and modelling programmes, supporting strategic planning, storm overflow reduction, and network resilience initiatives.
• Mentor and develop junior team members and contribute to bids and business development activities.

Benefits

• Competitive salary and comprehensive benefits package.
• Flexible hybrid working model and consideration of part-time or flexible arrangements.
• Career development opportunities, technical practice networks, and access to learning resources.