Assistant Project Manager- Water/Wastewater

Join a global professional services leader. We are committed to solving the world’s biggest challenges in the areas of water, energy and urbanization.GHD is looking for an experienced Assistant Project Manager with a focus in Water/Wastewater planning, design and construction. This is a project-focused role responsible for the management and delivery of projects across the water market sector and can be based out of our Irvine, CA office. Our Hybrid Work Model: Be part of the dynamic culture! Our workplace thrives on a hybrid model, combining in-office collaboration and flexibility. Join us in the office three days a week to contribute, connect and excel in our vibrant environment.Responsibilities of the position are:Manage day-to-day design execution for water and wastewater projects (treatment plants, pump stations, pipelines), coordinating process, civil, structural, mechanical, electrical, and I&C disciplines to deliver on scope, schedule, and budget.Support the Project Manager on project planning, work breakdown, staffing plans, earned value tracking, and monthly progress/financial reporting.Lead internal design reviews and QA/QC at key milestones (30/60/90/100%), tracking comment resolution and ensuring compliance with client standards and applicable regulations.Serve as a primary client contact for technical and design-related questions, prepare meeting agendas and minutes, and manage action items and deliverable logs.Coordinate subconsultants and specialty vendors, including scope definition, deliverable review, and invoice approval.Develop and maintain design schedules, identify critical-path risks early, and recommend recovery strategies to the PM.Manage scope changes, prepare change order justifications, and support contract negotiations and fee estimates for additional services.Support construction-phase engineering services, including RFI responses, submittal reviews, and design clarifications.Contribute to business development by supporting proposals, SOQs, and scope/fee development for new pursuits.Progressively take on independent project management responsibility for small to mid-size projects, with a defined path to a full Project Manager role.Support CM services with weekly construction meetings, site inspections and mainly act as Resident project engineer or Construction Manager.Education :Civil Engineering Degree, Masters Degree preferred7 year's proven experience with solid technical knowledge and skills across the water industry, including a strong background in condition assessment, planning, rehabilitation, and designQualifications:As a multicultural organization, we encourage individual achievement and recognize the strength of a diverse workforce. GHD is an equal opportunity employer. We provide equal employment opportunities to all qualified employees and applicants without regard to race, creed, religion, national origin, citizenship, color, sex, sexual orientation, gender identity, age, disability, marital status or veteran status.Salary Range: $103,000-$170,000 based on experience#LI-KM1Posting Date: 2026-09-22