WSP in the UK & Ireland
Senior Wastewater Process Engineer
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Senior Wastewater Process Engineer
Senior Wastewater Process Engineer
At WSP, you can always find opportunities to grow and do what matters to you. Shape a career as unique as you are and benefit from our global reach to discover new challenges while collaborating with diverse, talented individuals.
About the Role
An exciting opportunity exists for a Senior Wastewater Process Engineer to join our Water Engineering teams in Birmingham, Bristol, Manchester, Liverpool, London, Newcastle, or Glasgow.
You will play a critical role within multidisciplinary project design teams, delivering process engineering design elements across a variety of challenging water engineering projects—ranging from wastewater and water reuse to international initiatives—from feasibility and optioneering to detailed designs for procurement and construction, as well as reviewing supplier proposals.
Working closely within project teams, you will help deliver effective, professional services for a diverse client base, ensuring excellence at every stage.
Key Responsibilities
- Produce high-quality process design deliverables, including:
- Optioneering studies
- Process calculations and mass balances
- Process flow diagrams (PFDs)
- Piping and instrumentation diagrams (P&IDs)
- Sketches
- Basis of design reports
- Conduct outline and detailed process engineering design
- Attend site visits for data collection and engage directly with site operators
- Provide technical input to the procurement process
- Collaborate with Project Managers in technical discussions with clients
- Engage with technology vendors and suppliers
- Contribute to HAZOP, HAZID, ENVID, and SWIFT sessions
- Offer technical guidance, mentoring, and supervision to younger team members
- Foster collaboration across multidisciplinary teams to meet project deadlines, budgets, and quality standards, ensuring seamless integration of process engineering into overall designs
- Provide input on proposals, workscope, timelines, and budgets
- Maintain client liaison (both internal and external) to address their specific needs
Requirements
Qualifications
- A degree in Chemical or Environmental Engineering (or equivalent) or an MSc
- CEng chartership (or eligibility to attain within 12 months)
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Skills and Experience
- Extensive experience in process engineering design for infrastructure projects—and demonstrated leadership when taking the lead role in such assignments
- Strong background in the municipal water industry
- Ability to prepare/review process design deliverables independently, including:
- Technical specifications
- Calculations and reports
- Datasheets and schedules
- Process control philosophies
- P&IDs, mass balances
- Procurement documentation
- Proven experience in developing studies, feasibility analyses, concept designs, FEED, and detailed designs for:
- Wastewater treatment solutions (municipal or industrial):
- Primary, secondary, and tertiary treatments (e.g., filtration, clarification, chemical dosing, phosphorus removal, activated sludge processes, MBBRs, MBRs, and other advanced biological treatments)
- Wastewater treatment solutions (municipal or industrial):
- Understanding of centricity principles, including circular economy and Zero Liquid Discharge (ZLD)
- Preference for candidates experienced in consultancy, engineering firms, or related industries, with a strong track record as a Process Engineer
- Exceptional skill in writing technical reports and delivery presentations that exemplify a high standard for varied audiences
- An articulate communicator who can engage in professional verbal discussions, meetings, and presentations with:
- Colleagues (including senior staff)
- Clients
- Subcontractors
- Experience in leading multidisciplinary meetings (both in-person and online) and acting as the technical representative for external stakeholders
- Willingness to travel frequently, visiting construction sites and operating facilities to assess existing and new process performance—while prioritising safety in all environments
Applications are welcomed even if candidates do not fully meet all criteria—each individual brings unique value to our team.
About WSP
We are one of the world’s leading engineering and professional services firms, committed to crafting positive, enduring impacts on the communities we serve through innovation, integrity, and inclusion. With over 11,000 professionals across the UK and Ireland, we combine deep local knowledge with global expertise.
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Career Benefits with WSP
Work-Life Balance
- Hybrid work policy: Work from home two days per week, plus collaborate in our modern offices across the UK
- Flexible environment designed to support personal and professional goals
Inclusivity & Belonging
- WSP celebrates a culture of diversity, authenticity, and respect, focusing on employee well-being and individual growth
- Employee resource groups foster connections and advocacy for underrepresented backgrounds
Health & Wellbeing
- Thrive programme: Guided initiatives to improve overall well-being
- Virtual GP access: 24/7 NHS Irish Medical Council GP consultations for timely medical advice
- Reasonable workplace adjustments for supportive care
- Gymflex discounts through our flexible benefits: up to 40% off annual gym membership
- Comprehensive menopause support policies
Flexible Time Management
- WSP My Hour Initiative: Build in one daily hour for personal activities—with flexibility to repay any imbalance
- Part-time, flexible, and hybrid work options encouraged
- Optional premium leave and personalised bank holiday plans
Professional Development
- Supportive environment for career growth through mentoring, training, and Chartership opportunities
Our Commitment
WSP champions diversity and equality, inviting applications from all backgrounds (regardless of sex, race, disability, age, sexual orientation, religion, belief, marital status, pregnancy, maternity/paternity, or other protected characteristics). As a Disability Confident Leader, we will interview all disabled applicants meeting the minimum requirements—please indicate any necessary workplace adjustments during the application process.
Join us and help shape a brighter future—for your career and the world. Apply today and explore the opportunities that will define your next chapter.
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