Mechanical Site Manager – Water & Wastewater Treatment Birmingham (Site-Based with Hybrid Working)

About the Company

Our client is an award-winning provider of proprietary technologies for cost-efficient and environmentally friendly water and wastewater treatment, specialising in innovative solutions for industrial and municipal clients. Their range of best-in-class technologies have been deployed at over 100 sites globally, and the business has achieved exceptional growth year-on-year- making this an exciting time to join a company with real momentum behind it.

The Role

We''re looking for an experienced Mechanical Site Manager to oversee the installation and commissioning of water and wastewater treatment systems on site. You''ll be the key point of contact between the site team, supply chain, and the wider project management function - ensuring works are delivered safely, on programme, and to the high standards our client''s customers expect.

This role offers a genuine hybrid working arrangement: 3 days on site, 2 days working from home.

Key Responsibilities

• Managing day-to-day mechanical installation activities on water/wastewater treatment projects
• Coordinating subcontractors, suppliers, and direct labour to maintain programme and quality
• Ensuring full compliance with CDM regulations, site-specific health & safety requirements, and environmental obligations
• Liaising with the client, design team, and commissioning engineers throughout the construction phase
• Producing and maintaining RAMS, site diaries, progress reports, and O&M documentation
• Supporting the commissioning phase, working alongside process and commissioning engineers to bring plant into operation
• Identifying and managing technical queries, RFIs, and variation events

What We''re Looking For

• Proven experience as a Mechanical Site Manager on water sector or process/industrial projects
• Strong understanding of mechanical pipework, pumping systems, and associated plant — ideally within a treatment works environment
• SMSTS, CSCS (Black or Gold Card), and first aid certification
• Comfortable working with NEC or similar forms of contract
• Strong communication skills - able to manage multiple stakeholders and represent the business professionally on site
• Self-motivated and organised, capable of managing remote workdays effectively

What''s on Offer

• Competitive salary (dependent on experience)
• Hybrid working - 3 days site, 2 days from home
• The chance to work on technically interesting, high-impact water infrastructure projects
• A growing business with a strong pipeline and a genuine reputation for innovation in the sector