
Principal Process Engineer
Job Description
Posted on: April 13, 2026
Principal Process Engineer (Water)
Working Location: Manchester (Hybrid)
Salary: Up to £85,000 + Benefits
Key Responsibilities:
- Lead process design across major water and wastewater projects
- Oversee process design outputs to ensure safety, quality, and compliance
- Review and approve technical deliverables, reports, and specifications
- Develop practical and efficient design solutions from project scope and site data
- Lead and support engineers and graduates within the team
- Check and approve calculations including mass balances, hydraulic profiles, and system sizing
- Support development of process flow diagrams, control philosophies, and commissioning strategies
- Ensure designs align with industry and regulatory standards
- Manage design changes and ensure accurate documentation
- Support planning and estimation of design activities
- Participate in HAZOPs and technical review meetings
- Provide technical input into tenders and project delivery
Requirements:
- Strong background in process design within the UK water sector
- Experience across wastewater treatment and process design delivery
- Understanding of clean water and wastewater systems
- Chartered Engineer (or working towards)
- Experience with HAZOP studies (chairing beneficial)
- Strong technical, leadership, and problem-solving skills
- Experience mentoring and developing junior engineers
- Degree, HND, or equivalent experience
- Full UK driving licence
Benefits:
- Opportunity to lead technical delivery across complex water and wastewater projects
- Strong pipeline of long-term AMP programme work secured
- Significant leadership responsibility mentoring engineers and graduates
- Involvement across the full project lifecycle
- Real influence in technical direction and project delivery
Take the next step towards leadership in the water sector and develop your skills within a forward-thinking engineering environment. Apply now to join a team delivering impactful water infrastructure projects.
Apply now
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