Principal Engineer/ Lead Process Engineer

Overview

Provide technical leadership and process engineering assurance across clean water, desalination, wastewater and sludge treatment projects, leading complex studies and designs from feasibility through commissioning and performance optimisation while developing engineers and strengthening client relationships.

What you'll do

• Act as Process Lead or Technical Authority on major and technically complex water and wastewater projects, establishing the design basis, process philosophy, key criteria and assurance plan.
• Lead feasibility studies, options appraisal, whole-life-cost evaluation, process selection, pilot/trial planning, risk-based decision making and preferred-option recommendations.
• Prepare, review and approve process calculations and deliverables, including flow and load assessments, mass balances, hydraulic profiles, process flow diagrams, P&IDs, equipment sizing, datasheets, specifications, control philosophies, commissioning strategies and performance-test requirements.
• Undertake plant performance reviews, capacity assessments, process troubleshooting and root-cause analysis; translate operational data into practical improvement measures.
• Lead or support process-safety and design-risk activities including HAZID, HAZOP, SWIFT, DSEAR/ATEX reviews, CDM design-risk management and constructability/operability reviews.
• Develop procurement documentation, evaluate supplier and contractor submissions, undertake technical bid evaluation, manage technical clarifications and confirm compliance with performance requirements.
• Provide construction, commissioning and start-up support, including review of method statements, functional descriptions, operating procedures, sampling plans, performance testing and optimisation.
• Apply and develop digital engineering methods such as automated process-sizing tools, data analytics, process simulation, digital design environments and model-based review.
• Prepare and approve high-quality technical reports, proposals, scope documents, fee estimates and programme inputs across the project lifecycle.
• Maintain effective communication with clients and delivery teams across the UK and other international markets, presenting complex engineering recommendations clearly to technical and non-technical stakeholders.

What you'll need

• Bachelor's degree (B.E./B.Tech or equivalent) in Chemical Engineering, Environmental Engineering or a closely related discipline from a recognised institution.
• Typically 12–18 years of relevant process engineering experience in the water and wastewater sector, including substantial responsibility for technical leadership, checking/approval and multidisciplinary delivery.
• Proven project experience covering at least two of the three core areas: clean water treatment, desalination/membrane systems and wastewater treatment.
• Experience delivering international projects, preferably for UK, Middle East, Asia-Pacific or North American clients.
• Strong knowledge of process design principles, water chemistry, biological treatment, membrane systems, process control and commissioning.
• Working knowledge of applicable client standards, statutory requirements, British/European or relevant international standards, WIMES, CDM, DSEAR/ATEX and water-industry good practice.
• Demonstrated ability to lead complex technical work independently, make proportionate engineering judgements and communicate decisions with clear evidence and traceability.
• Excellent written and verbal communication, stakeholder management, presentation and technical-reporting skills.

Nice to have

• Broader experience across all three core areas (clean water, desalination/membrane systems and wastewater treatment).

Details

• Location: Noida, India (IN.Noida BPTP Capital City).
• Employment type: Regular employee.
• Flexible and hybrid work solutions; remote work opportunities outside of country.
• Relocation assistance offered.