Principal Process Engineer

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.