Associate Wastewater Process Engineer

Associate Wastewater Process Engineer – WSP UK & Ireland

Join WSP to apply for the role of Associate Wastewater Process Engineer within our Water Engineering teams across Birmingham, Bristol, Manchester, Liverpool, London, Newcastle, and Glasgow.

As an experienced Wastewater Process Engineer, you will work within multidisciplinary project design teams, delivering process engineering design for wastewater and water reuse projects throughout the UK and overseas. Your contributions will span from feasibility and optioneering to procurement and construction, and you will review supplier proposals.

• Produce process design deliverables such as optioneering studies, process calculations, mass balance, flow diagrams, piping and instrumentation drawings, sketches, basis of design reports, etc.
• Undertake outline or detailed process engineering design.
• Attend site visits for data acquisition and to meet site operators.
• Provide technical input to the procurement process.
• Support Project Managers in technical discussions with clients.
• Engage in discussions and liaise with technology providers and vendors.
• Attend HAZOP, HAZID, ENVID, SWIFT sessions.
• Provide technical guidance, coaching, and supervision of junior staff.
• Collaborate with other disciplines on multidisciplinary projects to meet time, cost, and quality objectives.
• Contribute to proposals, work scope, schedule, and budgets.
• Maintain liaison with clients to ensure their needs are met.

• Degree or MSc in Chemical, Environmental or related Engineering (or equivalent).
• Professional registration as CEng (or working towards chartership within 12 months).

• Significant experience delivering process engineering design for infrastructure projects, including leading a project or major task.
• Experience in the municipal water industry.
• Strong ability to prepare and review process design package deliverables such as technical specifications, calculations, reports, P&IDs, mass balances, and procurement documents.
• Experience delivering studies, feasibility, concept designs, FEED, and detailed design in wastewater treatment solutions.
• Understanding of circular economy, Zero Liquid Discharge, and emerging tertiary treatments.
• Experience in a consultancy environment or engineering company acting as Process Engineer.
• Proven ability to prepare high‑quality technical reports and deliver verbal presentations to diverse audiences.
• Strong communication skills to engage with senior colleagues, clients, and subcontractors.
• Experience leading multidisciplinary meetings and acting as the organisation’s technical representative with external clients.
• Willingness to travel and visit operational works and construction sites as required.

• Hybrid working policy: work from home up to two days a week.
• Flexibility to take one hour each day for personal activities.
• Access to WSP Thrive health programme, virtual GP service, and gymflex scheme.
• Opportunity to purchase additional leave and use bank holiday entitlement flexibly.
• Support for training, mentoring, and chartership.
• Inclusive and belonging culture with employee resource groups.

Mid‑Senior level

Full‑time

Management and Manufacturing

Professional Services

We positively encourage applications from suitably qualified and eligible candidates regardless of sex, race, disability, age, sexual orientation, gender reassignment, religion or belief, marital status, pregnancy or maternity/paternity. As a Disability Confident leader, we will interview all disabled applicants who meet the essential criteria. Please let us know if you require any workplace adjustments in support of your application.