Mechanical Design Manager - Water & Wastewater Infrastructure

At Jacobs, we're challenging today to reinvent tomorrow by solving the world's most critical problems for thriving cities, resilient environments, mission-critical outcomes, operational advancement, scientific discovery and cutting-edge manufacturing, turning abstract ideas into realities that transform the world for good. Your impact As a Design Manager – Mechanical Infrastructure, you will lead the multidisciplinary mechanical design delivery for complex water and wastewater infrastructure projects, including pump stations, water treatment plants (WTPs), wastewater treatment plants (WWTPs), desalination systems, and associated mechanical/process systems. You will be responsible for driving design integration, technical excellence, quality assurance, constructability, risk management, and programme certainty across all stages of project delivery—from concept through detailed and construction design. Working closely with Project Managers, Discipline Leads, and Sector/Regional Leadership, you will plan, coordinate, and assure the technical execution of mechanical design packages, while mentoring and developing engineers across global teams. Key duties include Lead and manage mechanical design for water/wastewater pump stations, treatment plants, and associated mechanical/process systems.Develop project-specific mechanical design strategies ensuring multidisciplinary integration, alignment with project requirements, and risk mitigation.Oversee preparation and coordination of mechanical deliverablesEquipment sizing & selectionMechanical design calculationsPumping system calculations & hydraulic checksP&IDs, equipment layouts, plant general arrangementsMechanical data sheets and specificationsReview and validate vendor documents, datasheets, and shop drawings; ensure integration with overall design.Lead mechanical engineering inputs for Design for Design‑Build (D for DB) and EPC delivery models constructability, staging, installation methodology, O&M requirements.Support and lead HAZOP/HAZID, value engineering, risk workshops, failure mode assessments, and operability/maintainability reviews.Manage and own key design management documentsProject Responsibility MatrixBasis of DesignOverall Design ProgrammeSchedule of DeliverablesDesign Risk RegisterDesign Change RegisterCoordinate with process, civil, electrical, ICA, BIM, structural, and architectural teams for holistic design delivery.Engage with clients through workshops, presentations, design reviews, and technical clarifications.Ensure design outputs comply with quality standards, codes, project specifications, and HSE requirements.Support the preparation of technical proposals, LOE estimates, design execution plans, and project scheduling.Mentor, coach, and provide performance feedback to engineers to strengthen organisational capability.Collaborate with global delivery centres to ensure consistent design practices and effective resource utilisation. We welcome applications from qualified professionals currently based overseas who are open to relocating to India. Relocation support may be provided for exceptional candidates having extensive experience in delivering Design Build water infrastructure projects. Here's what you'll need Key software tools PipeFlo, AFT Fathom/Impulse, WaterGEMS (for hydraulics interface), vendor pump selection softwarePlanning & Coordination Primavera P6, MS ProjectCollaboration ACC, ProjectWise, SharePoint, MS TeamsBIM (exposure advantageous) Revit, Plant 3D, OpenPlant Modeler, Navisworks, Revizto Key Behaviours Builds strong, collaborative relationships across multidisciplinary teams.Confident, approachable leader with strong client‑facing presence.Demonstrates leadership through coordination, clarity, and proactive communication.Encourages teams to develop integrated, constructible, and high‑quality mechanical design solutions.Organised, disciplined, and able to resolve complex mechanical issues in a timely manner.Champions a strong culture of safety, quality, and innovation.Flexible, dependable, and capable of performing in fast‑paced, contractor‑integrated environments. Work Experience 15+ years of experience in mechanical engineering design and design management within water/wastewater infrastructure projects.Proven leadership of multidisciplinary teams delivering mechanical design forWater/wastewater pump stationsWTPs/WWTPs and associated process unitsChemical dosing systemsSludge handling systemsHigh‑lift/low‑lift pumping systemsTreatment mechanical equipment (screens, clarifiers, blowers, compressors, valves, etc.)Strong understanding of pumping systems NPSH, system curves, pump selection, surge analysis interface, pipework design, and hydraulic analysis.Demonstrated capability in Design for Design‑Build constructability reviews, contractor interface, installation sequencing, technical risk mitigation.Experience coordinating mechanical design within a BIM‑enabled environment.Strong ability to interpret P&IDs, hydraulic profiles, process input documents, engineering drawings, and specifications.Experience with vendor coordination, MTO/BoQ preparation, equipment procurement support, and technical bid evaluations.Experience with change management, design risk management, and impacts assessment.Ability to support bids, proposals, LOE estimates, and multidisciplinary design execution plans.Experience with alternate delivery models (DB, EPC, CMAR, PPP) is an asset.Strong interest in digital delivery, automation, and continuous improvement of mechanical workflows. Qualifications Bachelor’s degree in Mechanical (or related discipline)Master’s degree in relevant field is advantageousProfessional Engineer (PE) / Chartered Mechanical Engineer (CEng) is advantageous Preferred Attributes Experience delivering large, complex water/wastewater facilities and pumping systems.Exposure to brownfield upgrades, shutdown/staging, and commissioning planning.Knowledge of sustainability principles and low‑carbon mechanical design approaches.Experience working with international codes, standards, and global delivery frameworks.Ability to operate effectively in fast‑paced, contractor‑integrated environments Hybrid Work Expectation Average office presence of 3 days per week or as per Company Policy, with travel for client/site meetings and occasional team meetings. At Jacobs we value people. Having the right balance of belonging, career and lifestyle enables us to consistently deliver and exceed clients’ expectations. Working alongside industry leaders, you will have the opportunity to develop your career working on key projects in an environment which encourages collaboration, knowledge sharing and innovation. To support your professional growth, Jacobs flexible working arrangements, extended leave options and a host of social, health and wellbeing events and initiatives will underpin our commitment to you. At Jacobs it’s all about what you do, not where you are, which counts! We value collaboration and believe that in-person interactions are crucial for both our culture and client delivery. We empower employees with our hybrid working policy, allowing them to split their work week between Jacobs offices/projects and remote locations enabling them to deliver their best work. Your application experience is important to us, and we’re keen to adapt to make every interaction even better. If you require further support or reasonable adjustments with regards to the recruitment process (for example, you require the application form in a different format), please contact the team via Careers Support.