Mechanical Engineer - Water

Water isn’t just a resource; it’s the lifeblood of our communities. As we navigate the ambitious demands of the AMP8 regulatory cycle, the choices we make today will define the environmental resilience of Wales and the South West for generations.

At Stantec, our water sector teams across Cardiff, Bristol, Taunton, and Exeter are growing rapidly. We are moving beyond standard engineering to deliver narrative‑led, sustainable solutions for the region's major utility frameworks. To achieve this, we are looking for passionate Mechanical Engineers to join our collaborative, award‑winning team. If you want to design with community in mind and tackle the realities of climate change and water scarcity head‑on, your next chapter starts here.

This position engages you across the entire project lifecycle, from early‑stage feasibility and innovative optioneering to detailed design, collaborative 3D modelling, and on‑site construction support. You will act as a pivotal technical bridge—collaborating closely with Project Managers, clients, supply chain partners, and multidisciplinary design teams to deliver high‑quality, resilient water and wastewater infrastructure.

• Engineering Excellence: Designing and sizing complex pumping and aeration systems, producing robust technical specifications, and shaping Piping & Instrumentation Diagrams (P&IDs) and General Arrangement drawings.
• Collaborative Innovation: Bringing designs to life by actively contributing to technical workshops, collaborative planning sessions, and critical safety reviews, including HAZOPs and ALMs.
• Mentorship & Growth: For senior engineers, providing technical leadership and guiding the next generation of junior engineers within the team.
• Community Resilience: Assessing existing site infrastructure to unlock capacity, improve water quality, and help clients meet their environmental commitments.

• A strong background in mechanical design, with a proven track record within the UK water or wastewater industry.
• Professional registration (Chartered Engineer status is highly desirable, or a clear pathway toward achieving it).
• An understanding of water treatment processes and the ability to evaluate asset health on‑site.
• Excellent communication skills—you are comfortable translating complex technical concepts to clients, stakeholders, and multidisciplinary teams.
• A mindset aligned with our core values: we put people first, we do what is right, we are better together, and we are driven to achieve.

• We put people first: A friendly, inclusive and collaborative environment where everyone feels valued and driven to succeed.
• Growth: Join an exciting growth journey across the UK.
• 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, discounted gym membership and more.
• Hybrid / Flexible working: Enjoy a healthy work‑life balance with our hybrid approach to flexible working.

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, planning, designing, delivering and managing infrastructure needed to support the creation of sustainable, healthy and prosperous communities.

Our teams provide effective and relevant solutions, translating our clients’ vision into valued consents, deliverable plans for projects and programmes, and efficient designs for delivery, based on technical excellence and deep market insights. We tackle today’s challenges while looking toward a fairer, better tomorrow, supporting clean growth, radical economic change and the needs of future communities.

Stantec provides equal employment opportunities to all qualified employees and applicants for current and future 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.

If you need support or adjustments during the recruitment process, please contact  and we will talk to you about how we can support you.