Principal Mechanical Engineer - Water Sector

THE OPPORTUNITY

The UK water sector is experiencing unprecedented investment, and Stantec is delivering the innovative engineering solutions that will help water companies improve resilience, reduce environmental impact and prepare for the future. As AMP8 gathers pace, we're looking for a Principal Mechanical Engineer to join our growing Water team in the South West .

This is an exciting opportunity to take a leading technical role within one of the UK's foremost multidisciplinary water consultancies. You'll work on a diverse portfolio of major infrastructure and non-infrastructure projects, collaborating with industry-leading specialists to deliver mechanical engineering solutions for water and wastewater treatment works, pumping stations and conveyance systems. With a strong pipeline of AMP8 work, investment in digital engineering and a collaborative team culture, you'll have the opportunity to further develop your career while helping deliver infrastructure that will serve communities for decades to come.

ABOUT THE ROLE

As a Principal Mechanical Engineer, you'll lead the technical delivery of mechanical engineering projects across the full project lifecycle, from feasibility and optioneering through to detailed design, construction support and commissioning. Working closely with project managers, technical leaders, clients, contractors and multidisciplinary teams, you'll develop practical, sustainable engineering solutions that deliver successful project outcomes.

You'll provide technical leadership across water and wastewater treatment facilities, pumping stations and mechanical process systems, ensuring engineering quality, technical governance and best practice throughout project delivery. You'll also mentor and support developing engineers, contribute to project planning and strengthen client relationships while helping deliver a growing portfolio of work across the South West.

YOUR IMPACT

Your expertise will help deliver the infrastructure that enables communities to access safe, reliable water services while supporting the industry's ambitious environmental and sustainability goals. Through innovative mechanical design, you'll contribute to projects that improve treatment processes, enhance operational efficiency and increase the resilience of critical water infrastructure.

You'll also help develop the next generation of engineers, sharing your technical knowledge and supporting a collaborative culture that drives engineering excellence. Your contribution will strengthen project delivery, build trusted client relationships and support Stantec's continued growth within the UK water sector.

ABOUT YOU Essential

• Degree qualified (or equivalent) in Mechanical Engineering.
• Chartered Engineer (CEng) or actively working towards Chartership.
• Experience delivering detailed mechanical design within the UK water sector.
• Strong understanding of water and wastewater treatment infrastructure, pumping stations and associated mechanical systems.
• Experience leading technical project delivery.
• Excellent communication and stakeholder management skills.
• Experience mentoring and supporting junior engineers.

Desirable

• Experience working alongside delivery contractors.
• Experience across both infrastructure and non-infrastructure projects.
• Experience supporting bids or framework delivery.
• Knowledge of digital engineering tools and modern methods of project delivery.

WHY JOIN US

• We put people first: We're proud of our friendly, inclusive and collaborative environment where everyone feels valued and driven to succeed.
• 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).
• Growth: We're on an exciting growth journey across the UK - we want you to be part of it!
• 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.

#UKWater

About Stantec

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.

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 deal with today's challenges, but also keep a fairer, better tomorrow in sight, looking at how we deliver clean growth, support radical changes in our economy and meet the needs of future communities.

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

At Stantec we want you to perform your best at every stage of the recruitment process and are committed to ensuring it is accessible to all. If you need any support or require adjustments to be made then please contact careers.UK@stantec.comand we will talk to you about how we can support you.

ReqID: 8876

Other Locations: Cardiff, Exeter

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