Principal Engineer - Wastewater/ Stormwater Network Modeling

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 · 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. 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