Senior Process Engineer - Water Sector

Stantec Inc.; Southampton; Hybrid; GBP 45,000 - 62,000; Full time

Benefits offered by this job

Top employer recognition

Industry-leading training and paid/pro

Professional subscriptions & Chartered

Hybrid / flexible working

Great benefits

Job summary

Stantec is seeking a Process Engineer to support Clean Water and Wastewater projects across the UK lifecycle, including Southampton. You will develop process engineering solutions, perform calculations, mass balances, hydraulic assessments and contribute to design documentation.

Join a multidisciplinary team to collaborate with civil, mechanical, electrical and environmental specialists, support site investigations and contribute to continuous improvement while developing technical capability

Qualifications

• Degree-qualified in Chemical Engineering, Process Engineering or related discipline.
• Strong interest or experience in water sector.
• Solid understanding of process engineering principles in water/wastewater.
• Good analytical and problem-solving skills.
• Ability to work collaboratively in multidisciplinary teams.
• Strong written and verbal communication and ability to meet deadlines.

Responsibilities

• Develop process engineering solutions: calculations, mass balances, hydraulic assessments.
• Prepare technical reports, specifications, calculations and design documentation.
• Support process design from feasibility through to detailed design and construction.
• Contribute to site investigations, asset assessments and optimisation.
• Collaborate with civil, mechanical, electrical, hydraulic and environmental specialists.
• Work with project teams to understand client requirements and deliver sustainable outcomes.
• Build technical capability through mentoring, training and hands-on experience across projects.
• Contribute to continuous improvement and engineering practices.

Skills

Chemical Engineering

Process Engineering

Analytical skills

Communication skills

Team collaboration

Time management

Education

Degree in Chemical Engineering or Process Engineering

Job description

As a Process Engineer, you'll support the development and delivery of engineering solutions across Clean Water and Wastewater projects, contributing to work at different stages of the project lifecycle.

• Develop process engineering solutions, including calculations, mass balances, hydraulic assessments and treatment evaluations.
• Prepare technical reports, specifications, calculations and design documentation.
• Support process design from feasibility and concept development through to detailed design and construction support.
• Contribute to site investigations, asset assessments, treatment optimisation and technical studies.
• Work with civil, mechanical, electrical, hydraulic and environmental specialists to develop coordinated engineering solutions.
• Collaborate with project teams to understand client requirements and deliver practical, sustainable outcomes.
• Build your technical capability through mentoring, training and hands‑on experience across a diverse project portfolio.
• Contribute to continuous improvement and the development of effective engineering practices.

YOUR IMPACT

Your work will help improve the performance, resilience and sustainability of water and wastewater infrastructure across the UK. By contributing to projects spanning both Clean Water and Wastewater, you'll support reliable water supplies, effective treatment processes and better environmental outcomes. You'll also broaden your understanding of the water sector, learn from experienced specialists and develop the technical and project delivery skills needed to take on greater responsibility as your career progresses.

• Degree qualified in Chemical Engineering, Process Engineering or a related discipline.
• Experience or a strong interest in developing a career in process engineering within the water sector.
• Understanding of process engineering principles and water and/or wastewater treatment.
• Good analytical, technical and problem‑solving skills.
• Ability to work collaboratively within multidisciplinary project teams.
• Strong written and verbal communication skills.
• Ability to organise your workload and meet project deadlines.
• Enthusiasm for learning and developing your technical expertise.

Desirable

• Chartered or Incorporated Engineer (CEng/IEng), or actively working towards professional registration.
• Membership of a relevant institution, such as CIWEM, IChemE, ICE or IMechE.
• Experience in the water, wastewater, utilities or infrastructure sectors.
• Familiarity with process calculations, mass balances, hydraulic assessments or treatment evaluations.
• Experience contributing to technical reports, engineering studies or design development.
• Exposure to site investigations, commissioning, testing or asset optimisation.
• Interest in sustainability, digital innovation and new approaches to process engineering.

Every day, water and wastewater infrastructure faces new demands, from maintaining reliable drinking water supplies to improving treatment processes and protecting the natural environment. At Stantec, our Process Engineering teams are helping shape the solutions to these challenges, delivering projects that support essential water services and create lasting benefits for communities.

We're looking for a Process Engineer - Water Sector to join our growing teams in Reading, Brighton, Southampton or Cambridge. Working across both Clean Water and Wastewater projects, you'll gain exposure to a broad range of engineering challenges, treatment processes and infrastructure improvements, collaborating with experienced engineers and multidisciplinary specialists. This is an opportunity to develop your technical expertise across the wider water sector, contribute to meaningful projects and build a rewarding career within a supportive and growing Process Engineering team.

• We are driven to achieve: Named in the top 50 companies to work by Glassdoor 2025. Recognised by Corporate Knights as one of the world's top 10 most sustainable companies 2025. Named 'Best Place to Work' and 'International Consulting Firm of the Year' at the NCE Awards 2024.
• We do what is right: Industry leading training and development as well as paid for professional subscriptions. A professional progression plan, supporting you to become chartered with ICE.
• We are better together: A supportive and collaborative team environment and Early Careers peer group and wider ERG network (see more on our ERGs here: Stantec Employee Resource Groups). The Stantec community unites more than 34,000 employees working in over 450 locations across 6 continents. We have been working with our clients and communities in the UK for over 150 years. We plan, design, deliver and manage the development and infrastructure needed to support the creation of sustainable, healthy and prosperous communities.
• Stantec provides equal employment opportunities to all qualified employees and applicants for future and current employment and prohibits discrimination on the grounds of race, colour, religion, sex, national origin, age, marital status, genetic information, disability, sexual orientation, gender identity or gender expression. We prohibit discrimination in decisions concerning recruitment, hiring, referral, promotion, compensation, fringe benefits, job training, terminations or any other condition of employment. Stantec is in compliance with laws and regulations and ensures equitable opportunities in all aspects of employment. Building an inspired, inclusive work environment that attracts, supports, and develops world‑class talent is a crucial key to our success. If you are excited by this role but worry that your experience doesn't exactly align, we encourage you to apply.
• Great Benefits: Competitive salary, bonus schemes, enhanced pension plan, annual leave with the option to buy/sell additional days, private medical insurance, group income protection & life assurance included as standard as well as discounted gym membership and lots more.
• Hybrid / Flexible working: Enjoy a healthy work‑life balance with our hybrid approach to flexible working.

If you're looking to broaden your experience across Clean Water and Wastewater projects while developing your Process Engineering career, we'd love to hear from you.