Senior Mechanical Engineer - Water
Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Oct 6, 2026. COWI scores A on the Alion truth index.
Senior Mechanical Engineer (Water Utilities)
London / Derby / Glasgow
Permanent
Office/Home Hybrid Working
Do you want to be a part of a growing M&E team? Can you collaborate with colleagues across UK and International projects? Are you experienced in Mechanical Infrastructure Design? Then, this could be the next adventure in your career.
Create Solutions that will enable a better tomorrow
To further our mechanical capability on Infrastructure projects, we are looking for a Senior Mechanical Engineer with a Water Utilities background to join us. Your primary task will be to deliver engineering work related to the design of elements including water supply and wastewater infrastructure and non-infrastructure equipment. This includes pressurised mains, pumping stations, treatment works apparatus and other relevant equipment. Your role will be focused on the design environment, which, while based in the UK, will involve interacting day-to-day with colleagues across our global hubs. There may also be opportunities to broaden your contribution to other areas within the MEP discipline as well as client-side or site-based roles in a variety of major infrastructure settings.
Your key responsibilities will be:
- Contributing towards the design of projects for a wide range of clients
- Planning design work and deliverables together with wider MEP team
- Development and technical assurance of design including use of relevant software
- Ensuring compliance with both local and international standards
- Coordination of multi-disciplinary aspects of projects
- Mentoring junior team members in design
- Contributing to the building of relationships with clients and other stakeholders
Your skills. Our team. Together we design the future. The first step to success in this role is that you are eager to collaborate with the people around you, whether they are colleagues, partners, or customers. Developing ties with others is something you do by acting respectfully and delivering on your promises. And you never get set in your ways but keep exploring new insights and ways to improve.
On top of that, you’ll have:
- A degree in mechanical engineering or similar
- Achieved Chartered Engineer status (or equivalent)
- Relevant experience within mechanical systems design
- The ability to provide technically sound solutions alone and where required, acting as a discipline lead
- A solid mechanical understanding of water-based systems such as pressurised water supply mains, pumping stations and treatment works apparatus
- Experience with hydraulic modelling of pipe networks, steady state and transient analysis calculations
- Knowledge on pipe support and stress calculations
- Exposure to other mechanical equipment such as lifting equipment, actuated hydraulic gates and building services would be an advantage
- Experience with 3D and BIM design
- Knowledge of relevant UK Water Industry Specifications (WIMES)
- Experience of applying CDM2015 regulations to design tasks
- Experience of design and build projects would be beneficial which may include designer's representation on site
A place to work and so much more
At COWI, we work together with our customers to shape a sustainable and liveable world. We do it by applying our knowledge and curiosity - and sometimes even our courage - to create the solutions the world needs today to enable a better tomorrow. We support our customers’ transition towards increased sustainability. We strive to lead by example by embedding environmental management, social responsibility and good governance into our business practices and the options we provide to our customers.
We value differences and development and cultivate an environment of belonging and having fun. Because that is what brings out the best in you, at work and at home.
With offices primarily located in the Nordic region, the UK, North America and India, we are currently more than 7,500 people who bring their expertise in engineering, architecture, energy and environment into play.
What we also offer:
To us, a fair reward is more than a competitive salary. We want to take care of our people professionally and personally as well.
Some of our benefits include:
- 28 days' holiday plus all UK bank and public holidays
- Formalised development plans and yearly promotion opportunities
- Private health care, for you and your immediate dependents
- Flexible and hybrid working conditions
- Annual subscription fees paid for your membership of two Professional Institutions
- Group personal pension scheme - salary exchange
- Life assurance
- Cycle-to-work scheme
- Corporate gym membership
As part of our commitment to equality, diversity, and inclusion, we partner with the wisecampaign.org.uk to recruit for a better gender balance in our teams.
Got more questions?
If you have any unanswered questions about the role or what we have to offer, please reach out to Laura Dobson at [email protected].
Get to know us even better at our website, www.cowi.com, where you can learn more about our projects, our strategy, what we want to achieve and what life is like at COWI.
Equal opportunity employer.
COWI provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to ethnicity, colour, religion, gender, national origin, age or disability. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.