Senior Mechanical Design Engineer
Water & Wastewater Infrastructure
Location: St Albans
Employment Type: Permanent
The Opportunity
Our client is seeking an experienced Senior Mechanical Design Engineer to join their growing engineering team delivering major water and wastewater infrastructure projects. This is an excellent opportunity for a technically strong engineer with extensive design experience in the water sector to take ownership of complex mechanical design packages, mentor junior engineers, and contribute to the successful delivery of high-profile projects.
The successful candidate will play a key role in the development, coordination, and delivery of mechanical engineering designs, ensuring compliance with industry standards, client requirements, and project objectives.
Key Responsibilities
* Produce high-quality mechanical design deliverables that meet safety, quality, and regulatory requirements.
* Develop mechanical designs, calculations, drawings, reports, and technical specifications for water and wastewater projects.
* Undertake hydraulic design and analysis for a range of treatment and infrastructure schemes.
* Lead and mentor CAD technicians, graduate engineers, and junior design staff.
* Prepare scopes of work for subcontracted M&E design teams and review their outputs for technical accuracy and compliance.
* Liaise with equipment suppliers, manufacturers, contractors, and project stakeholders throughout the design process.
* Ensure all designs comply with relevant industry standards, professional guidelines, and company procedures.
* Manage and record design changes throughout the project lifecycle.
* Estimate design hours and support project planning and resource allocation.
* Attend and present at design reviews, client meetings, technical workshops, and project presentations.
* Collaborate with multidisciplinary engineering teams to deliver integrated design solutions.
Required Qualifications & Experience
* Minimum 10 years mechanical design experience within the water industry.
* Significant experience in hydraulic design and water sector engineering projects.
* Awareness and understanding of electrical design principles and control systems.
* Degree-qualified or HND-qualified in Mechanical Engineering or a related discipline.
* Strong IT skills, including engineering design software and Microsoft Office applications.
* Membership of a recognised professional engineering institution and actively working towards professional chartership.
Preferred Qualifications & Experience
* Chartered Engineer (CEng) status.
* Experience in electrical engineering and/or control systems engineering.
* Proven experience across both clean water and wastewater treatment projects.
* Good understanding of construction methods, installation practices, and engineering materials.
* Strong knowledge of engineering drawing standards and best practices.
Key Skills & Competencies
Technical Skills
* Mechanical engineering design
* Hydraulic calculations and analysis
* Engineering specifications and technical reporting
* Design review and quality assurance
* Multidisciplinary engineering coordination
* Water and wastewater treatment processes
Personal Attributes
* Excellent communication and stakeholder management skills
* Strong problem-solving and analytical abilities
* Results-driven and delivery-focused approach
* Ability to lead, mentor, and develop junior team members
* Strong attention to detail and commitment to quality
* Effective planning, organisation, and time management skills
What Our Client Is Looking For
The ideal candidate will be a proactive and technically capable Senior Mechanical Design Engineer who can lead design activities from concept through to detailed design and delivery. You will have a collaborative approach, strong commercial awareness, and the ability to provide technical leadership while supporting the development of less experienced engineers.
If you are looking to join a forward-thinking engineering organisation delivering essential water infrastructure projects, we would be keen to hear from you.