Senior Principal Process Engineer - Water / Wastewater

About the role

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

• Provide senior technical leadership for the process discipline within the UK water/wastewater treatment design team.
• Act as process discipline lead, sub-lead or senior technical authority on complex treatment projects across design, construction support, commissioning and handover.
• Set and maintain process design standards, checking requirements, modelling approaches, design risk processes, digital workflows and quality expectations.
• Lead and assure complex process deliverables, treatment strategies, process models, key technical decisions, supplier packages, contractor submissions and multidisciplinary interfaces.
• Drive integrated coordination across Process, Mechanical, EICA, civil/structural, architectural, MEP, construction, commissioning and operations teams.
• Lead senior client engagement, technical workshops, optioneering, value engineering, design reviews, process safety reviews and performance optimisation discussions.
• Embed modern delivery approaches including process simulation, data-led design, automation, standardisation, digital tools and model-informed decision making.
• Support project directors and project managers with technical risk, scope, resourcing, programme, budget, change control and design quality.
• Build and develop the process sub-team through recruitment, mentoring, line management, succession planning and professional development.
• Support business planning, work winning, client development, bid strategy and growth of Egis' UK water/wastewater treatment capability.
• Minimum Requirements
• BEng/MEng or equivalent in Chemical Engineering, Process Engineering or closely related discipline.
• Chartered Engineer or Incorporated Engineer status with a relevant professional institution, such as IChemE.
• Typically 10-12+ years' relevant process design experience.
• Background must be from water, wastewater and/or biosolids/sludge treatment design.
• Proven track record leading process design and technical assurance on complex multidisciplinary water/wastewater treatment projects.
• Deep technical expertise in treatment process design, process selection, mass balance, process capacity, PFDs, P&IDs, design basis development and commissioning/performance testing.
• Strong practical experience using process modelling/simulation packages such as BioWin, SUMO, Dynamizu or equivalent.
• Strong understanding of UK regulated water sector drivers, water company standards, CDM 2015, process safety, environmental/regulatory requirements and common delivery models.
• Demonstrable experience developing people, including mentoring, line management, technical coaching, recruitment or resource planning.
• Strong client and stakeholder management skills, with credibility to lead senior technical conversations and influence project direction.
• Strong commercial and delivery awareness, including scope development, fee estimating, programme/resource planning, risk management and change control.
• Desirable Skills / Knowledge
• Experience as process discipline lead, design manager, technical director, associate-level lead or sub-team lead within consultancy, contractor, water company or technology provider environments.
• Strong UK water sector client network and experience supporting account growth, opportunity shaping, bid leadership and work winning.
• Advanced experience with BioWin, SUMO, Dynamizu, model calibration, dynamic simulation, scenario testing, optimisation studies or operational troubleshooting.
• Experience developing services around digital treatment design, process optimisation, operational intelligence, nutrient removal, sludge/bioresources, water reuse, energy/carbon reduction or smart assets.
• Experience leading process technical governance, communities of practice, design standards, QA frameworks or delivery improvement initiatives.
• Experience building teams during growth phases, including skills mapping, capability planning and creation of a positive, delivery-focused culture.
• Please note that you must have the right to work in the UK to be considered for this position.
• What's in It for You?
• An exciting new growth role in a fast‑organic growing UK business, offering c

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