Senior Engineer - Floodplain Modeling

Overview Location(s): Southern California Practice/Department: Engineering Work Environment: Hybrid Compensation: $100,000-$130,000 annually* Dudek’s journey began in 1980 with a vision to serve Southern California’s water and wastewater agencies.  Today, we are a 100% employee-owned firm supporting clients nationwide and delivering projects that improve and protect the built and natural environments of communities throughout the United States. Our work has been recognized by leading industry organizations, and we’ve been honored with multiple national Top Workplace Awards.  Our employee-owners are unified by a singular commitment to supporting projects that address key societal issues, such as the transition to renewable energy, infrastructure hardening and repair, environmental protection, and community resilience.  Learn more about our  award-winning culture , the  benefits and perks  of being a Dudekian, and the  projects  you will have the opportunity to shape.   Position Overview Who You Are   As an  employee-owner , you embrace accountability, working safely, and collaboration while thinking resourcefully and independently.  Like all Dudekians, you are curious and  solution-oriented , with the ability to adapt quickly to changes and approach challenges with a spirit of  innovation .   How You’ll Make an Impact   As a Water Resources Engineer , you will provide planning, analysis, and design support for flood mitigation, stream restoration, culvert replacement, and stormwater capture projects serving public agency clients throughout California. This role emphasizes riverine hydraulics, floodplain analysis, channel restoration, and fish passage design, supporting projects that improve watershed resilience and environmental outcomes. The ideal candidate is an EIT or California Professional Engineer with a strong technical foundation in surface water hydrology and hydraulic modeling, and the ability to independently execute technical assignments with minimal oversight. In this role, you will collaborate with multidisciplinary teams, contribute technical expertise related to hydrologic and hydraulic modeling, support regulatory compliance efforts, and help ensure successful project delivery through quality control, budget awareness, and client coordination. Duties and Responsibilities   Engineering Design and Analysis Perform hydrology and hydraulics calculations and modeling using HEC-RAS (1D/2D), HEC-HMS, and SRH-2D to support floodplain, channel restoration, and drainage designs. Conduct sediment transport, scour, and steep channel analyses, including probabilistic design approaches for grade control structures and pipe crossing protection. Develop and refine engineering plans, specifications, technical memoranda, and design reports for restoration, fish passage, and flood mitigation projects. Support FEMA floodplain analyses (Zone AE mapping, LOMR/CLOMR) and prepare regulatory submittal packages. Performs advanced hydrologic and hydraulic calculations, modeling, and simulations to support floodplain modeling and stormwater system design. Develops and produces creek restoration design plans, specifications, and cost estimates. Prepares and reviews technical reports, drainage studies, and stormwater documentation. Reviews and optimizes layouts, drainage systems, and material specifications for efficiency and constructability. Project Management and Coordination Manages project phases or technical workstreams, ensuring alignment with scope, budget, and schedule. Coordinates with internal teams, field staff, clients, and regulatory agencies to meet project objectives. Supports project managers in tracking deliverables, budgets, and resource allocation. Monitors progress of assigned work to meet financial targets and performance expectations. Technical Leadership and Support Serves as a subject matter expert in open channel hydraulic analysis, including floodplain design, creek restoration, and regulatory compliance. Provides technical oversight and guidance during hydrology and hydraulics analysis and design development. Reviews work of junior engineers and provides mentorship, training, and constructive feedback. Supports technical excellence by promoting best practices and sound engineering judgment. Quality Control and Compliance Conducts quality assurance and quality control reviews on plans, reports, and deliverables. Ensures compliance with applicable codes, standards, and regulations, including NPDES requirements. Identifies technical challenges and develops effective, innovative solutions. Promotes adherence to safety protocols and project standards across project teams. Collaboration and Communication Acts as a liaison between technical teams, project managers, clients, and external stakeholders. Maintains strong working relationships to support effective collaboration and communication. Presents technical findings, design concepts, and project updates to stakeholders. Contributes to a positive team environment and supports cross-disciplinary coordination. Professional Development and Innovation Stays current with stormwater regulations, emerging technologies, and industry trends. Identifies opportunities to improve processes, tools, and engineering efficiencies. Supports business development efforts through proposals, technical input, and client engagement. Participates in professional organizations, training, and industry events. Minimum Qualifications  Experience: 6+ years of experience in stormwater engineering, with strong expertise in hydrology and open channel hydraulic analyses. Education: Bachelor’s degree in Civil or Environmental Engineering. Licensure: Registered Professional Engineer (PE) in the State of California or ability to obtain. Preferred Qualifications  Proficiency with engineering software such as AutoCAD/Civil 3D, ArcGIS, HEC-RAS, HEC