Senior Principal Mechanical Engineer - Water

Senior Principal Mechanical Engineer - Water Sector

Location: Warrington, England, United Kingdom

Company: Stantec

Posted: 6 days ago

Are you ready to steer the mechanical strategy for one of the most ambitious eras in UK water history? At Stantec, we aren’t just preparing for the future; we are currently delivering it. With AMP8 well underway, we are managing record‑breaking levels of investment. We are looking for a Senior Principal Mechanical Engineer to provide high‑level technical authorship and strategic mentorship across the North West.

Influence, Lead, Deliver. This is a high‑visibility leadership position. As a Senior Principal, you aren’t just a technical expert; you are a guardian of engineering excellence and a pivotal figure in our regional growth.

• Strategic Oversight:
  Lead complex mechanical design for large‑scale infrastructure and non‑infrastructure projects, from initial feasibility and optioneering to final construction support.
• Technical Authority:
  Act as the lead for water/wastewater treatment plants, conveyance systems, and pumping stations, ensuring sustainable, future‑proof solutions.
• Team Mastery:
  Hold full line‑management responsibilities, shaping the next generation of engineers through active mentorship and professional development.
• Collaborative Power:
  Work as a peer to Technical Leaders and Clients, influencing project outcomes and driving efficiency across our supply chain and contracting partners.

• Pathway to Global Leadership:
  Access to international technical networks and thought leadership forums.
• Industry‑Leading Development:
  Backing for specialised certifications and executive leadership training.
• AMP8 Impact:
  At the forefront of the largest investment cycle the industry has seen, providing a platform to deliver career‑defining projects.

• Degree qualified in Mechanical Engineering, ideally with Chartered (CEng) status.
• Extensive experience in detailed design within the water sector. Background working alongside delivery contractors is highly desirable.
• Track record of developing engineers and managing high‑performing teams.
• Delivery‑first mindset and emotional intelligence to lead a diverse team.

• World‑Class Reputation:
  Named International Consulting Firm of the Year and Best Place to Work (NCE Awards 2024).
• Sustainability Leaders:
  Consistently ranked in the Top 10 Corporate Knights most sustainable companies globally.
• Package:
  Competitive salary, private medical insurance, flexible working arrangements, and a culture that prioritises your wellbeing.

Join us and define the standard for AMP8 and beyond.

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

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.

Stantec provides equal employment opportunities to all qualified employees and applicants 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. 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  and we will talk to you about how we can support you.