Senior Mechanical Design Engineer

Browne Group; Stanley Common; On-site; GBP 70,000 - 100,000; Full time

Job summary

Browne Group is seeking a Senior Mechanical Design Engineer to lead multiple mechanical design packages across water and wastewater projects. You will own the design quality from concept to completion, ensuring compliance with safety, environmental, and client requirements.

You will mentor junior engineers, drive best practices, and collaborate with multidisciplinary teams while providing support during procurement, installation and commissioning.

Qualifications

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

Responsibilities

• Lead complex mechanical design packages for water and wastewater projects.
• Provide technical ownership and ensure designs meet regulatory and client requirements.
• Mentor junior engineers and contribute to team capability development.
• Support commissioning and provide specialist mechanical input during procurement and installation.

Skills

Mechanical design

Leadership

AutoCAD

SolidWorks

Pumps

Piping

Education

Bachelor’s degree in Mechanical Engineering

CEng status or on track to achieve

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 Browne (Non - Infrastructure)

At Browne, we are engineering with purpose.

We are a leading UK contractor delivering specialist engineering, construction and maintenance services across the water, wastewater and civil engineering sectors. From building pipelines and upgrading pumping stations to delivering complex mechanical, electrical, instrumentation, control and automation (MEICA) solutions, we help provide cleaner water, stronger infrastructure and more reliable services for communities across the UK.

Our expertise spans the full lifecycle of water and wastewater assets, combining civil engineering, process engineering, power systems, control systems, system integration and long-term maintenance. We work closely with our clients to deliver safe, sustainable and innovative solutions that improve operational performance and support future resilience.

We offer a wide range of career opportunities both on site and behind the scenes. Whether your skills are in engineering, project delivery, safety, sustainability, commercial, planning, automation or business support, there's a place for you at Browne. We value different perspectives and experiences, and we're proud to be a Silver Award Investors in Diversity accredited employer.

Our teams use smart technology, technical expertise and a hands-on approach to deliver high-quality outcomes safely and efficiently. From construction and infrastructure projects to advanced control systems and commissioning, we support our clients in solving complex challenges and maintaining essential services.

Browne is part of Renew Holdings plc, a UK-based group of specialist engineering businesses.

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.