Principal Engineer - Wastewater/ Stormwater Network Modeling

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Job Description

Technical leadership

· Lead the development, calibration and verification of wastewater network models using InfoWorks ICM or similar platforms.

· Act as technical lead or senior reviewer on major modelling projects, frameworks and programmes.

· Provide technical oversight and quality assurance across multiple projects, ensuring models, calculations, assumptions and deliverables are robust and traceable.

· Guide strategic planning, storm overflow reduction, network resilience, growth assessment, flood risk and pollution reduction initiatives.

· Support scope development, tender responses, fee inputs and technical approaches where required.

Manila capability and team development

· Help build Manila as a trusted centre for wastewater modelling and InfoWorks ICM delivery.

· Mentor and develop junior, senior and specialist modelling staff through technical guidance, structured review and knowledge sharing.

· Develop or improve workflows, quality checklists, modelling standards, training material and lessons learned for repeated use across projects.

· Support workload planning, task allocation, review sequencing and escalation of technical or delivery risks.

· Promote consistent communication between Manila delivery teams and client-facing teams in the UK, Ireland, Australia, New Zealand and other markets.

Data, analysis and client support

· Analyse complex datasets and modelling outputs, preparing high-quality technical reports and client deliverables.

· Interpret data to assess the impact of upstream activities, growth, climate, network constraints and operational conditions on wastewater systems.

· Review survey, rainfall, flow, SCADA, EDM, CCTV and asset data to determine model confidence and fitness for use.

· Support client discussions, technical queries, option appraisal and evidence-based decision-making.

· Ensure technical assumptions, model limitations, reviewer comments and agreed changes are properly documented.

Essential experience

· Extensive experience in wastewater network modelling within consultancy, utility or infrastructure environments.

· Strong proficiency in InfoWorks ICM and wastewater modelling workflows, standards and quality processes.

· Proven ability to lead projects, provide technical direction and review complex model outputs and deliverables.

· Strong understanding of wastewater planning, storm overflow reduction, drainage area planning, growth assessment and network resilience.

· Excellent communication, stakeholder management and technical report-writing skills in English.

· Ability to mentor staff, build capability and operate effectively across international project teams and time zones.

Desirable experience

· Experience supporting UK, Ireland, Australia, New Zealand or other international water industry projects.

· Strong understanding of UK water industry regulations, AMP cycles, Uisce Eireann / Irish Water standards, Welsh MBV or comparable client frameworks.

· Experience contributing to bids, framework delivery, technical standards, modelling guidance or standard operating procedures.

· Experience with 1D / 2D modelling, river, pluvial or integrated catchment modelling using HEC-RAS, TUFLOW, Flood Modeller Pro or similar tools.

· Chartered status, professional registration or active progress towards recognised professional qualification would be beneficial.

Qualifications

Qualifications

· Degree in Civil Engineering, Environmental Engineering, Water Resources, Hydrology or a related discipline.

· Master's degree or equivalent advanced technical training in hydraulics, water resources, environmental engineering or related field would be advantageous.

Additional Information

At AECOM, we are committed to maintaining a secure and trustworthy recruitment process and take any fraudulent hiring activity seriously. To support this commitment, all newly hired employees are required to attend an in-person Day 1 onboarding at an AECOM office location as a condition of employment.

About AECOM  

AECOM is proud to offer comprehensive benefits to meet the diverse needs of our employees. Depending on your employment status, AECOM benefits may include medical, dental, vision, life, AD&D, disability benefits, paid time off, leaves of absences, voluntary benefits, perks, flexible work options, well-being resources, employee assistance program, business travel insurance, service recognition awards, retirement savings plan, and employee stock purchase plan. 

AECOM is the global infrastructure leader, committed to delivering a better world. As a trusted professional services firm powered by deep technical abilities, we solve our clients’ complex challenges in water, environment, energy, transportation and buildings. Our teams partner with public- and private-sector clients to create innovative, sustainable and resilient solutions throughout the project lifecycle – from advisory, planning, design and engineering to program and construction management. AECOM is a Fortune 500 firm that had revenue of $16.1 billion in fiscal year 2025. Learn more at aecom.com. 

What makes AECOM a great place to work  

You will be part of a global team that champions your growth and career ambitions. Work on groundbreaking projects - both in your local community and on a global scale - that are transforming our industry and shaping the future. With cutting-edge technology and a network of experts, you’ll have the resources to make a real impact. Our award-winning training and development programs are designed to expand your technical expertise and leadership skills, helping you build the career you’ve always envisioned. Here, you’ll find a welcoming workplace built on respect, collaboration and community - where you have the freedom to grow in a world of opportunity. 

As an Equal Opportunity Employer, we believe in your potential and are here to help you achieve it. All your information will be kept confidential according to EEO guidelines.