Mechanical Engineer – Water & Wastewater

About the role

Egis is expanding its UK Water business and is looking for a Mechanical Engineer to join a fast‑growing, multidisciplinary team. You will work on high‑impact water and wastewater treatment projects across the UK, delivering sustainable and innovative solutions.

Key responsibilities

• Develop mechanical design packages from feasibility through detailed design for water and wastewater treatment projects.
• Prepare calculations, specifications, datasheets, schedules, technical notes, P&IDs, layouts, drawings and procurement documents under senior guidance.
• Size and select equipment such as pumps, pipework, tanks, valves, penstocks, screens, grit removal and odour control systems.
• Participate in site visits, asset surveys and data‑collection activities with operators, suppliers and technology providers.
• Coordinate with process, civil/structural, architectural and construction teams.
• Support CDM/safety‑by‑design reviews, risk assessments, constructability checks and commissioning/handover activities.
• Utilise digital tools, spreadsheets, models and data analysis to improve design quality and efficiency.
• Work within agreed scope, budget and programme, escalating risks and issues early.

Required profile

• BEng/MEng or equivalent qualification in Mechanical Engineering.
• Typically 4+ years of relevant mechanical engineering design experience.
• Background in water, wastewater, biosolids/bioresources or oil & gas sectors.
• Proven experience preparing mechanical design deliverables such as calculations, specifications, datasheets, schedules, reports, drawings or procurement documentation.

Required skills

• Mechanical design calculations
• Equipment sizing and selection
• P&ID creation and layout drafting
• Specification and datasheet preparation
• Schedule and report generation
• Spreadsheet modelling
• Data analysis
• Use of digital design tools