Process Engineer - Water / Wastewater

Egis; Greater London; Hybrid; GBP 55,000 - 75,000; Full time

Benefits offered by this job

Hybrid working

26+ days annual leave

Professional development & chartership

Global mobility

Job summary

Egis is expanding rapidly its UK Water team, delivering major water and wastewater projects across the UK. This Process Engineer role focuses on designing robust treatment solutions within a multidisciplinary environment, with opportunities to travel to sites and collaborate with operators, suppliers and other engineering disciplines.

You will contribute to feasibility through detailed design, develop process calculations and P&IDs, and help drive sustainable, compliant outcomes for AMP8 and

Qualifications

• Bachelor/Master in chemical or process engineering; 4+ years in water/wastewater design.
• Experience delivering process design deliverables: P&IDs, mass balances, basis of design.
• Knowledge of water/wastewater treatment processes and CDM/safety-by-design.

Responsibilities

• Contribute to process design packages for UK water/wastewater projects.
• Prepare calculations, mass balances, P&IDs, and design reports under guidance.
• Support option development, capacity checks, and asset assessment.
• Attend site visits and coordinate with multidisciplinary teams.
• Support safety studies such as HAZOP, CDM reviews.
• Utilize data analysis and modelling outputs to inform designs.

Skills

Excel

Data analysis

Modelling tools

Multidisciplinary teamwork

Process design

Education

BEng/MEng in Chemical/Process Engineering

IEng/CEng progress

Tools

BioWin

SUMO

Dynamizu

Job description

Process Engineer - UK Water / Wastewater

Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team

Shape the Future of Water Infrastructure with Egis

• London | Bristol | Manchester (Hybrid)
• Process Engineering Design | UK-Wide Impact | High-Growth Environment

Egis is expanding rapidly in the UK, backed by a global team of more than 23,500 experts across 100+ countries. We design and deliver intelligent, sustainable infrastructure to address climate challenges and strengthen community resilience. As part of our fast-growing UK Water team, you will join an agile environment where progression is quick, visibility is high, and your impact is immediate.

Process Engineer - UK Water / Wastewater

Water | Wastewater | Biosolids/Sludge | AMP 8 | SROs | MEP-Led Team

Shape the Future of Water Infrastructure with Egis

• London | Bristol | Manchester (Hybrid)
• Process Engineering Design | UK-Wide Impact | High-Growth Environment

Egis is expanding rapidly in the UK, backed by a global team of more than 23,500 experts across 100+ countries. We design and deliver intelligent, sustainable infrastructure to address climate challenges and strengthen community resilience. As part of our fast-growing UK Water team, you will join an agile environment where progression is quick, visibility is high, and your impact is immediate.

Job Description

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.

Key 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.

Qualifications

Minimum 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.

Desirable Skills / Knowledge

• 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.

Please note that you must have the right to work in the UK to be considered for this position.

Additional Information

What’s in It for You?

• 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. Top Employers Institute is the global authority on recognising excellence in people practices.
• 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

Ready to Lead?

Join Egis and play a pivotal role in shaping the future of sustainable water infrastructure across the UK.

We are committed to our planet

In each project we design, engineer and operate we care deeply about the legacy we’re leaving behind. As part of our team, you’ll have a unique opportunity to use your skills and expertise to shape a better future for our communities in the UK, and all around the globe.

Our commitment is translated in the work carried out by our Egis Foundation, which funds concrete actions to address the climate crisis and is focused on educational and social initiatives that will help in the responsible and sustainable shift towards a sustainable world.

We are an Equal Opportunities employer and we strive to build a workforce that truly reflects the communities we represent. We welcome candidates from all backgrounds, regardless of age, disability, gender, gender identity, gender expression, race, religion or belief, sexual orientation, socioeconomic background, and any other protected characteristic. If you decide to apply for an opportunity with us, your application will be assessed based purely on your experience, the essential and desirable criteria, and your suitability for the role. We value each and every one’s contribution as this builds our culture and means that if you work with us, you will be included, listened to, and respected.