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.