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