Senior / Principal Mechanical Engineer
Type: Permanent
Reference: 225205082
Job Description:
Senior Mechanical Design EngineerWater & Wastewater Infrastructure
Location: St Albans
Employment Type: Permanent
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.
- 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.
- 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.
- 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
- 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
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.
