Title: Principal Process Engineer
Location: Leeds, UK
Full-Time
X4 Group is supporting a leading engineering consultancy in the search for a Principal Process Engineer to join their established water and wastewater team.
This is a key senior position, offering the opportunity to lead the delivery of complex infrastructure and environmental projects, while playing a central role in technical leadership, client engagement, and team development.
You will work across a diverse portfolio of projects, contributing to the development of sustainable and efficient treatment solutions across the full project lifecycle.
The Role
As a Principal Process Engineer, you will act as a technical authority within the team, leading process design activities and supporting both project delivery and strategic growth.
You will take ownership of key workstreams, ensuring high-quality outputs while collaborating closely with multidisciplinary teams and clients.
Key Responsibilities
- Lead process engineering design across feasibility, concept, outline, and detailed design stages
- Develop and review core process deliverables, including:
- Block Flow Diagrams
- P&IDs
- Mass balances
- Equipment sizing
- Provide technical leadership and oversight across multiple projects
- Undertake and review process modelling, analysis, and optimisation studies
- Ensure quality and compliance through technical assurance and checking of deliverables
- Produce and review high-quality technical reports, specifications, and client presentations
- Act as a key point of contact for clients and stakeholders
- Support and mentor junior and mid-level engineers
- Contribute to resource planning and team capability development
- Support business development activities, including tenders, proposals, and client engagement
Candidate Profile
Essential Requirements
- Degree in Chemical Engineering or a related discipline
- Chartered Engineer (CEng) status with a recognised professional institution
- Extensive experience in water and/or wastewater treatment projects
- Strong background in process design across all project stages
- In-depth knowledge of treatment technologies and process engineering principles
- Proven ability to lead technical delivery on complex projects
- Experience in process optimisation and problem-solving
- Strong technical report writing and review capabilities
- Excellent communication and stakeholder management skills
Apply direct for confidential chat.
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