Senior / Principal Mechanical Engineer - Water Sector

Stantec UK
London
The Opportunity

Are you a Senior or Principal Mechanical Engineer passionate about delivering sustainable solutions? Join Stantec, and help shape the future of the UK water sector.

This is an exciting time to join Stantec as the UK water sector undergoes record investment through the AMP8 cycle. We are expanding our expert engineering teams and are looking for a key leader to join us in London, Reading, or HighWycombe.

You won't just be joining a team; you'll be joining a highly collaborative, close-knit, and award-winning culture (NCE Best Place to Work 2024) consistently recognized globally as a leader in sustainability.

We offer genuinely flexible working arrangements and a pathway to technical leadership and mentorship, with opportunities for line management responsibilities for the right candidate. We invest in you with a competitive salary, excellent pension, free private medical insurance, and industry-leading training.

What You'll Be Doing: Leading End-to-End Design

You will be involved in the full project lifecycle, from initial concept through to construction support. Your primary responsibility will be leading the mechanical design for critical infrastructure and non-infrastructure water projects.

This includes taking charge of design for:

  • Water and wastewater treatment plants.
  • Conveyance systems and pumping stations.
  • Managing feasibility studies, optioneering, detailed design packages, site surveys, and investigations.
You will work closely with clients, project managers, and multi-disciplinary teams across all stages to ensure positive and successful project outcomes. You will also play a key role in the mentorship and guidance of our junior engineers.

About You

You will be degree qualified in Mechanical Engineering or a closely related subject. You must possess proven, substantial experience in design within the water industry, while experience in design for construction would also be beneficial.

Ideally, you will hold Chartered status or be actively working towards it. While not essential, a background working for or closely with delivery contractors would be highly beneficial to your success in this role.

To hear what some of our employees say about life at Stantec, please click on My Stantec Stories

#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 [email protected] and we will talk to you about how we can support you.
Posted 2026-01-09

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