Senior Mechanical Design Engineer

Enisca Browne; Hemel Hempstead; On-site; GBP 65,000 - 90,000; Full time

Job summary

Enisca Browne, part of Browne Group, seeks a Senior Mechanical Design Engineer to lead mechanical designs for water and wastewater projects. You will own the design from concept to completion and mentor engineers across multidisciplinary teams to meet regulatory and client requirements.

The role requires being in the office or on site at least 3 times per week, enabling collaboration and ensuring high standards of safety and sustainability in our solutions.

Qualifications

• 7–10 years of mechanical design experience in water or wastewater.
• Proven track record delivering multidisciplinary equipment designs.
• Chartered Engineer status or actively working toward it.
• Proficient in AutoCAD, SolidWorks or similar CAD tools.

Responsibilities

• Lead complex mechanical design packages from concept to completion.
• Mentor junior engineers and guide project teams.
• Collaborate with multidisciplinary teams and stakeholders.
• Support commissioning, troubleshooting, and optimisation of systems.

Skills

Leadership

Problem solving

Stakeholder engagement

Cross-disciplinary collaboration

Education

Bachelor's degree in Mechanical Engineering

CEng status or candidate

Tools

AutoCAD

SolidWorks

Job description

We are seeking a Senior Mechanical Design Engineer to play a leading role within our Design Team, taking technical ownership of mechanical engineering solutions across a wide range of water and wastewater treatment projects.

In this role, you will guide the full design process from concept through to completion, ensuring every mechanical system meets regulatory, safety, and client requirements while maintaining high standards of efficiency and sustainability. You will collaborate closely with multidisciplinary teams to deliver fully integrated designs, oversee technical reviews and risk assessments, and provide expert support during procurement, installation, and commissioning.

Acting as a mentor to junior engineers, you will help shape the future capability of the team while championing innovation, quality, and best practice across the business.

Please note that this role requires you to be in the office or on site at least 3 times a week.

About Enisca Browne

Enisca Browne is part of Browne Group, a leading contractor in the UK water and civil engineering sectors. Together we deliver essential infrastructure that supports clean water, safe drainage and reliable services for communities.

Enisca Browne focuses on the systems that keep water and wastewater treatment sites running at their best. We work on power, process equipment, control systems and the civil structures that support them.

As the Group’s mechanical, electrical, instrumentation, control and automation specialist, we manage everything from control panel manufacturing to full system integration and commissioning. Our teams bring deep technical knowledge and a collaborative approach to solving real-world challenges.

We offer opportunities for people with a range of skills and backgrounds, from hands‑on engineering to project support and technical delivery. Everyone plays a part in helping us deliver safe, smart and sustainable solutions.

What We’re Looking For

We’re looking for a technically strong, forward‑thinking engineer who can lead complex mechanical design packages, support others, and confidently represent the discipline to clients and stakeholders.

Experience

• 7–10 years’ mechanical design engineering experience, ideally in the water or wastewater sector.
• Proven background delivering mechanical designs for treatment projects with multidisciplinary teams.
• Strong understanding of mechanical equipment used in water treatment (pumps, piping systems, valves, blowers, filtration systems).
• Solid knowledge of relevant mechanical design standards, HSE requirements, and environmental regulations.
• Experience supporting commissioning, troubleshooting, and optimisation of mechanical systems.

Knowledge & Skills

• Strong leadership and mentoring ability, with experience guiding engineering teams.
• Excellent problem‑solving skills and a track record of delivering efficient, cost‑effective solutions.
• Highly organised, able to prioritise multiple projects while maintaining accuracy and quality.
• Strong communication and stakeholder engagement skills, confident explaining technical concepts clearly.
• Collaborative mindset and ability to work effectively across disciplines.

Essential Qualifications

• Bachelor’s degree in Mechanical Engineering or a related field.
• Chartered Engineer (CEng) status or actively working toward it.
• Proficiency in mechanical design software such as AutoCAD, SolidWorks, or similar tools.

If you’re ready to take a leading role in designing mechanical systems that support sustainable, reliable water treatment — and you’re passionate about mentoring others and driving excellence — we’d love to hear from you.