Senior Mechanical Engineer - Water Sector

The UK water sector is undergoing its most ambitious period of investment in decades, and Stantec is helping to deliver the infrastructure that will improve water security, protect the environment and support communities for generations to come. As investment across the South of England continues to grow, we're looking for a Senior Mechanical Engineer to join our expanding Water team.

This is an exciting opportunity to take the next step in your career, leading the delivery of mechanical engineering solutions across a diverse portfolio of water and wastewater projects. Working alongside industry-leading specialists within a collaborative multidisciplinary team, you'll take ownership of technical delivery, mentor developing engineers and contribute to projects that make a lasting difference for our clients and the communities they serve.

ABOUT

THE ROLE As a Senior Mechanical Engineer , you will lead the delivery of mechanical engineering design across a range of infrastructure and non-infrastructure projects, supporting delivery from feasibility and optioneering through to detailed design, construction support and commissioning.

Your responsibilities will include:

Leading mechanical design for water and wastewater treatment works, pumping stations and associated infrastructure.

Producing and reviewing technical calculations, specifications, schedules and engineering documentation.

Collaborating with Project Managers, civil, electrical, process and structural engineers to deliver integrated design solutions.

Supporting site investigations, design reviews and construction activities where required.

Providing technical guidance and mentoring to developing engineers.

Building strong relationships with clients, contractors and supply chain partners to ensure successful project delivery.

YOUR IMPACT Your work will help deliver the resilient water infrastructure that communities depend on every day. Through your technical expertise, you'll support clients in improving operational performance, meeting environmental commitments and delivering sustainable engineering solutions that respond to the challenges of climate change and population growth.

Beyond project delivery, you'll play an important role in strengthening our Mechanical Engineering capability by sharing knowledge, supporting colleagues and driving technical excellence across the team. Every project you contribute to will help create lasting value for clients, communities and the environment.

ABOUT YOU Essential

Degree qualified (or equivalent) in Mechanical Engineering.

Experience delivering mechanical engineering projects within the UK water sector or a similar regulated industry.

Strong understanding of mechanical systems associated with water and wastewater treatment and pumping stations.

Experience leading technical delivery across multidisciplinary engineering projects.

Experience producing and reviewing technical specifications, calculations and engineering documentation.

Strong communication and stakeholder management skills.

Experience mentoring or supporting the development of junior engineers.

Desirable Chartered Engineer (CEng) status or working towards professional registration.

Experience working alongside contractors and delivery partners.

Knowledge of digital engineering tools and modern methods of project delivery.

Experience supporting client relationships and framework delivery.

WHY JOIN USWe 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…