Principal Process Engineer - Water

Arcadis is the world's leading company delivering sustainable design, engineering, and consultancy solutions for natural and built assets.

We are a global team of 36,000 people across 70+ countries, committed to improving quality of life by tackling complex challenges with sustainable solutions.

Our UK Resilience Water team is seeking experienced Principal / Senior Process Engineers to expand our Design & Engineering team. This role involves optioneering, outline, and detailed design inputs for UK Water Companies' frameworks, along with large‑scale design & build projects with contractor partners in treatment process engineering.

• Liaison with clients to understand their specific requirements
• Preparation of outline and detailed design drawings and associated construction‑ready documentation
• Inputs to the development of feasibility‑level design and optioneering assessments
• Preparation of clear and well‑structured design calculations, reports, drawings and other deliverables
• Liaison with contractors, supply chain, and other project stakeholders
• Mentoring and supporting development of less experienced staff

• Degree in Chemical Engineering or suitable alternative qualification
• Chartered membership of an appropriate professional body (IChemE or CIWEM)
• Strong technical design experience on multidisciplinary projects
• Good working knowledge of Water Industry clients and contractors
• Motivation, influencing and people management skills
• Knowledge and experience of BIM‑led design and other process‑specific digital tools
• Understanding of applicable British Standards, UK Industry Codes of Practice, and water specifications

We are an equal opportunities employer and are committed to equality, diversity and inclusion. All qualified applicants are encouraged to apply.