Principal Process Engineer

Principal Wastewater Process EngineerContract | Remote Working | £500–£600 per day (Inside IR35)

An exciting opportunity for a Principal Wastewater Process Engineer to support a major capital delivery programme, working on high-value wastewater infrastructure projects with flexibility to work fully remote, while staying connected to a collaborative UK-based engineering team.

You’ll provide technical leadership across the full project lifecycle — from feasibility and design through to operational support — shaping innovative, sustainable solutions on multi-million-pound wastewater schemes.

What you’ll be doing

• Leading wastewater process design through feasibility, outline and detailed design
• Setting technical direction and supporting strategic decision-making
• Reviewing process models, PFDs, mass balances, P&IDs and supplier proposals
• Ensuring compliance with health & safety, environmental and technical standards
• Driving best-value, whole-life and low-carbon engineering solutions
• Providing expert guidance and mentoring to process engineers
• Attending design reviews to present solutions and manage risk

What we’re looking for

• Extensive wastewater process design experience
• Degree in a relevant engineering or scientific discipline (Master’s desirable)
• Chartered Engineer or equivalent professional status
• Strong technical leadership, communication and problem-solving skills

What’s on offer

• 💻 Remote working
• 🌊 High-profile wastewater projects
• 💷 £500–£600 per day (Inside IR35)
• ⏱ 12 months + Long-term contract potential