Process Engineer - Water / Wastewater

The UK water sector is entering a period of unprecedented investment and transformation. As Egis accelerates the growth of its Water Business in the UK, we are building a high-performing Process Engineering team to help shape this next chapter. We are inviting applicants who want to play a meaningful role in delivering major water and wastewater programmes in the UK municipal and industrial sectors. Working within a collaborative, multidisciplinary environment, you will contribute to technically robust, sustainable and innovative treatment solutions across nationally significant projects. This is a rare opportunity to join at a key stage of our UK growth journey, helping to establish, shape and expand a process engineering capability built on Egis’ global infrastructure expertise and long-term commitment to the sector.

Responsibilities

Contribute to process design packages across feasibility, optioneering, concept, outline and detailed design for UK water/wastewater treatment projects; Prepare process calculations, mass balances, basis of design reports, process flow diagrams, P&IDs, sketches, datasheets, schedules and technical notes under senior guidance; Support option development, treatment process selection, hydraulic/process capacity checks and assessment of existing treatment assets; Attend site visits, asset surveys and data collection activities, including discussions with operators, suppliers and technology providers; Support multidisciplinary coordination with Mechanical, EICA, civil/structural, architectural and construction teams; Contribute to design and operational safety studies such as HAZOP, SWIFT, DSEAR, HAC/HAP and CDM/safety-by-design reviews; Use spreadsheets, process tools, data analysis and modelling/simulation outputs to support evidence-based design decisions; Support contractor/supplier reviews, technical queries, commissioning strategies, performance testing and handover where required

Requirements

BEng/MEng or equivalent in Chemical Engineering, Process Engineering or closely related discipline; Typically 4+ years’ relevant process design experience; Background must be from water, wastewater and/or biosolids/sludge treatment design; Experience preparing process design deliverables such as calculations, mass balances, process flow diagrams, P&IDs, basis of design reports and technical specifications; Understanding of water/wastewater treatment processes, process safety, CDM/safety-by-design and quality assurance processes; Ability to work with multidisciplinary teams and contribute to integrated, buildable and operable treatment solutions; Good digital capability, including Excel and relevant process calculation, data analysis or modelling tools; Ability to travel to operational works, construction sites and supplier facilities as required; Right to work in the UK

Nice to have

Experience in wastewater treatment, clean water treatment, sludge/bioresources, water reuse/recycling, nutrient removal, chemical dosing, energy recovery or low-carbon treatment; Exposure to AMP8, WINEP, SROs, D&B, framework or alliance delivery environments; Awareness or practical use of process modelling/simulation packages such as BioWin, SUMO or Dynamizu; Progress towards IEng or CEng with a relevant professional institution, such as IChemE

Benefits

An exciting new growth role in a fast-organic growing UK business, offering clear and accelerated career progression; Top Employers 2025 - Egis recognised across four continents for excellence in HR practices, having been awarded the prestigious Top Employer 2025 certification; A global leader in green infrastructure - we’re proud to lead the way in sustainable infrastructure, mobility and energy, innovating across the entire value chain and every aspect of the built environment; Highly competitive reward package; Hybrid and flexible working; 26+ days annual leave plus bank holidays; Professional development, chartership support & global mobility; Supportive, inclusive culture driven by sustainability and long-term community impact