Senior Mechanical Design Engineer

We’re hiring: Senior Mechanical Design Engineer

Hemel Hempstead | Permanent | ⏰ 40 hours | £50,000–£60,000

We’re looking for a Senior Mechanical Design Engineer to take a lead role within our Design Team, delivering mechanical solutions across water and wastewater treatment projects that make a real impact.

In this role, you’ll own the full mechanical design lifecycle — from concept through to commissioning — working closely with multidisciplinary teams to deliver safe, efficient, and sustainable solutions. You’ll also mentor junior engineers and help shape technical best practice across the business.

⚠️ Please note: This position requires attendance in the Glasgow office or on site at least 3 days per week

What you’ll be doing

✅ Leading mechanical design packages end‑to‑end

✅ Producing compliant designs aligned with HSE and environmental standards

✅ Supporting procurement, installation, commissioning, and optimisation

✅ Carrying out technical reviews and risk assessments

✅ Mentoring and developing junior engineers

What we’re looking for

• 7–10 years’ experience in mechanical design engineering (water/wastewater ideal)
• Strong knowledge of pumps, pipework, valves, blowers, and filtration systems
• Experience delivering designs within multidisciplinary teams
• Confident communicator with strong stakeholder engagement skills
• Organised, solutions‑focused, and commercially aware

Qualifications

• Degree in Mechanical Engineering (or related discipline)
• Chartered Engineer (CEng) or working towards
• Proficiency in AutoCAD, SolidWorks, or similar tools

Why join?

You’ll be part of a business delivering essential, sustainable infrastructure , with the opportunity to influence technical direction, mentor others, and work on projects that positively impact communities and the environment.

Interested? Apply now or message me directly to learn more.

Vacancy Reference: PR/029133

Vacancy Owner: Debbie De La Cruz | debbie.delacruz@shirleyparsons.com | (+44) 1296 611330 | (+44) 7470179145