Meet Our Team of Associates

Jonny is a Principal Modelling Technical Specialist at Trident Group Solutions and is our country manager in Ireland. He has over 18 years’ experience in the water industry, primarily based in Northern Ireland, and has worked for a number of water company clients across the UK and Ireland.

Jonny specialises in asset management of potable water networks with particular expertise in hydraulic modelling, risk modelling and asset prioritisation strategies. He has experience with various water distribution modelling packages including InfoWorks WS Pro, EPANET and WaterGEMS.

He has managed teams delivering extensive hydraulic model build programmes, strategic network studies, growth modelling, network optimisation studies and risk/prioritisation modelling. This experience has seen Jonny provide technical leadership on a range of clean water distribution network projects all with a focus on delivering value for money solutions to both on-going network issues and strategic longer-term planning.

Milivoj is Principle Hydraulic Modeller within Trident Group Solutions. With over 15+ years’ of modelling experience within the UK water industry he has been responsible for planning and execution of field tests, water balance calculation, hydraulic network modelling / calibration and reporting of clean water models under various projects for the UK water companies.

Milivoj’s experience extends to Strategic Studies, Water Impact Assessments (WIA) and Modelling (including Network Optimisation) on the specific request of the clients. In all these studies, Milivoj is using the hydraulic models for planning, operational and/or design (conceptual phase) purposes.

Milivoj is a proficient user of InfoWorks WS Pro network modelling software and is using it for project schemes that optimise network operation/performance, reduce leakage, increase network resilience and calculate and reduce supply interruptions

Clare is a Principal Hydraulic Modeller with Trident Group Solutions. She has over 10 years' experience within the water industry with the majority spent within a water company where she began her career in GIS, then moved into the Clean Water Modelling team as an Assistant Hydraulic Modeller, and then as the Clean Water Hydraulic Modelling Engineer which involved leading a team of four modellers. She subsequently moved into consultancy and joined Trident full time in 2023.

She has a proven track record in model builds, planning and execution of field tests, water balance calculations and model calibration with associated reporting. Clare is accomplished in operational incident modelling with a proactive focus on rapid return of supplies to customers, as well as strategic scenarios such as large-scale rezones, changes in asset operation, zonal studies, and system optimisation. Clare has undertaken solution focussed modelling of raw water mains to assess issues and improve performance. Other aspects of hydraulic modelling include new development assessments, pressure management schemes, mains diversions, concessionary supplies, and pumping station reviews.

Clare's software experience includes SynerGI, Ansys CFX, Deltares Wanda, Bentley Hammer, InfoWorks and ArcGIS.

Tom joins Trident with over 8 years’ experience of working in the industry with several different UK water companies. He has extensive experience using Infoworks WS Pro modelling software as well as experience using Infowater and Synergi. During his career so far he has completed reports for Impact assessment studies, DG2 studies, Growth Enquiries, reactive and planned outages and an Infoworks model build using Hydraulic Model Manager software (HMM).

Additionally, Tom has been involved in multiple projects outside of modelling, providing a deep understanding of the network and the assets used within the model. Projects include DOMS flushing, PRV maintenance, trunk main contingency planning and construction site surveying to help identify unaccounted for water.

Peter joins Trident with over 10 years experience of working in the industry with a number of different UK water companies.

Being an advanced user of InfoWorks WS Pro, his skills have been used in number of areas including, poor pressure network design (formerly DG2), network model calibration and field testing, developer enquiries, growth studies and capital planning.

He is currently working with us to further develop and provide supply interruption reporting results using InfoWorks WS drain down analysis, as well as actively train and guide clients on using the modelling software packages.

With Peter being an experienced user of InfoWorks and having a wealth of knowledge from his career so far, he continues career development as a Senior Modeller at Trident working with our clients to develop better ways to use models and is yet another valued member of the Trident team.

Tish is a Senior Network Modeller primarily based in Northern Ireland, who has over 10 years’ experience working in the UK water industry, with several different water companies. She is an experienced user of Infoworks WS Pro modelling software as well as QGIS and MapInfo GIS software. 

She has extensive experience in hydraulic network build, calibration and scenario modelling, field test planning and execution, data analysis and water balance calculations, rehabilitation feasibility schemes and developer enquiries.

As part of Trident Group Solutions, Tish has been involved with model calibration, peaking scenarios and associated reporting as well as leakage detection and scheme proposals to reduce leakage across multiple networks. 

Keegan has had 2 years of UK water sector experience working as clean water modeller. Prior to his career in the water sector, he achieved a BSc Environmental Science degree from the University of Sheffield. Whilst at University, he focussed on water specific modules covering the following topics: Water Contamination and Remediation, Water Security and Practical field assessments ultimately writing his dissertation on a quantitative analysis of river water quality. Keegan has worked as a consultant, working for multiple water companies such as Yorkshire Water, Affinity Water, Anglian Water and South West Water.

His career in the water sector started within Developer services. Here, using InfoWorks WS Pro, he provided modelling support and analysis across different project styles such as: Contingency Reports for diversions and outages of mains, Point of Connection Reports & Impact Assessment Reports. Keegan then moved on to Growth Studies, working on new water connections, pre-planning enquiries and New Mains Connections using Synergi.

Keegan has worked on multiple model builds using InfoWorks WS Pro and HMM (Hydraulic Model Manager). Whilst working on model builds Keegan contributed towards planning and design of field tests, demand analysis, model build and model calibration.

Nicole is a Senior Hydraulic Modeller at Trident with experience across New Zealand and the UK. With a background in water engineering, she has extensive expertise in hydraulic modelling using InfoWorks WS Pro, including model build and calibration, development assessments, operational modelling of pump stations and reservoirs, and network design. She is also proficient in QGIS and familiar with InfoWorks ICM and AutoCAD Civil 3D.

In addition to modelling, Nicole has delivered a range of asset management and infrastructure projects, including Water Safety Plans, drinking water scheme reviews, renewal planning for water, wastewater, and stormwater networks, carbon assessment initiatives, and pipeline design projects. Her experience spans both operational and strategic studies, helping utilities improve network performance, resilience, and long-term investment planning.

Having worked with clients throughout New Zealand and the UK, Nicole brings valuable international experience and a strong understanding of differing regulatory environments. She has undertaken complex operational modelling studies, including supply interruption events and network resilience assessments, while developing improved processes that enhance modelling accuracy and reporting efficiency. Nicole is passionate about supporting water utilities through evolving industry challenges and helping clients make informed decisions about the future management of their water infrastructure.

Jean Paul holds an MSc in Operations Management and Business Analytics from the University of Salford, graduating with First Class honours, alongside a BSc (Hons) in Construction Project Management from the same institution.

With experience as an Environmental Project Manager Intern at NG Bailey, Jean Paul contributed to sustainability initiatives by researching waste production, implementing recycling campaigns, and leveraging MACE’s waste data platform to drive measurable improvements.

Known for a strong work ethic and a methodical approach, Jean Paul is an adaptable problem-solver with advanced analytical and critical thinking skills. Outside of professional pursuits, Jean Paul is highly active, with a passion for combat and endurance sports such as jogging, sprinting, and weightlifting, and enjoys outdoor adventure activities.

Toby is a Hydraulic Modeller with Trident Group Canada, bringing more than five years of experience in hydraulic and hydrological modelling, stormwater management, and drainage design. He has supported major municipal, transportation, and land development projects across Canada, the United States, the UK, and China.

At Trident, Toby delivers drainage and wastewater planning studies, hydraulic model reviews, capacity assessments, and flood and storm overflow risk evaluations that support critical infrastructure investment decisions. His experience includes the design of stormwater management systems for transit facilities, hydraulic assessments for creek diversions and utility relocations, and regional flood mitigation studies.

Proficient in InfoWorks ICM, HEC-RAS 2D, EPA SWMM, AutoCAD Civil 3D, and ArcGIS, Toby combines strong technical expertise with practical engineering insight. He holds both Bachelor's and Master's degrees in Civil Engineering from Rice University, where he specialised in flood mitigation and channel hydraulics and managed a real-time flood warning system to support emergency response planning.

Clare is a Senior Wastewater Modeller with over 9 years’ experience delivering wastewater projects across the UK and Ireland. She has worked with major water utility clients including United Utilities, South West Water, Northern Ireland Water, and Uisce Éireann.

Clare has extensive experience using InfoWorks ICM to undertake model build and verification, drainage area planning studies, spill reduction investigations, catchment assessments, development of design horizon models and solution development projects.

Prior to specialising in wastewater modelling, Clare gained valuable experience in project delivery and site-based roles, developing expertise in project management, stakeholder engagement, contract administration and multidisciplinary team coordination. This combination of technical modelling and project delivery experience provides a strong understanding of both the engineering and operational challenges faced by water companies.

Clare holds a First-Class Honours Master's degree in Civil Engineering and is passionate about using modelling to develop practical, sustainable solutions for the wastewater industry.

Ethan Johnstone is a Graduate Modeller with Trident, combining a strong technical background with valuable experience gained in the automotive industry, where he developed skills in data analysis, problem-solving, process improvement, and quality-focused delivery. Since joining Trident, Ethan has continued to build his expertise in hydraulic modelling and water network analysis, supporting a range of clean water projects for clients across the UK.

Working with InfoWorks WS Pro, Ethan has contributed to model development, calibration, network performance assessments, and operational studies, helping clients better understand and manage their water distribution systems. His analytical approach, attention to detail, and commitment to continuous learning have enabled him to quickly develop into a capable and trusted member of Trident's modelling team.

As an emerging professional within the water industry, Ethan is focused on expanding his technical capabilities while supporting the delivery of high-quality modelling solutions that help water companies improve network performance, resilience, and customer service.

Jodie is a Senior Wastewater Hydraulic Modeller with Trident Group Solutions. She has 4 years' consultancy experience within the wastewater industry working with several water companies including Welsh Water, South West Water and United Utilities.

Her experience includes Development Impact Assessments (DIAs), model verification, model build and maintenance, Spill Frequency & Volume Analysis, catchment planning, optioneering and solution modelling, root cause analysis of high spilling CSOs and the Storm Overflow Assessment Framework (SOAF).

Proficient in InfoWorks ICM and has experience with MapInfo Pro, QGIS, RStudio and MATLAB

Prior to her career in the water sector, she achieved a BSc Geography degree from the University of Bristol and spent 1 year post graduation as a Geoscientist carrying out property ground stability risk assessment reports, primarily mining and environmental assessments.

Jodie has gained her Associate Membership at the Institute of Sustainability and Environmental Professionals (formerly the Institute of Environmental Management and Assessment)