Senior Hydrology Engineer

We are currently seeking a Senior Hydrology Engineer for a portfolio of mobility/railway projects in Dammam, KSA.

The engineer will lead hydrologic and hydraulic design across feasibility, concept, and detailed design stages. Responsibilities include rainfall-runoff modeling, peak flow estimation, and design of stormwater systems (channels, culverts, pipes, detention/retention basins, swales, oil-water separators). They will perform hydraulic structure sizing and backwater analyses, floodplain mapping, scour assessment, and conveyance system optimization. Designs will consider arid-climate extremes, flash flooding, wadis, sabkha conditions, and climate change scenarios.

• Provide specialist input for transport corridors, including track formation drainage, subgrade protection, cross-drainage structures, cut/fill slope drainage, station and depot stormwater systems, and highway interchange drainage.
• Coordinate with civil/track, geotechnical, bridges, and road design teams to manage interfaces and maintain operability under extreme events. Experience with hydrology for embankments, culverts under rail, and hydraulic impacts on structures is advantageous.
• Ensure designs comply with KSA and Gulf authority requirements, relevant international codes (e.g., AASHTO, BS/EN, Eurocodes), and client-specific standards.
• Prepare technical reports, design calculations, and drawings suitable for authority review; support permitting, NOC's, and stakeholder approvals; and integrate environmental and sustainability considerations, including water-sensitive urban design where applicable.
• The role includes model based workflows using GIS, BIM, and CDE platforms. The engineer will review hydrologic/hydraulic models, maintain data integrity, and contribute to standard libraries and design templates.
• Participate in design reviews, HAZID/HAZOP where relevant, value engineering, and quality management processes, ensuring traceable assumptions and auditable calculations.
• Work closely with multidisciplinary teams, coordinate inputs from survey, geotech, roads/rail, structures, and environmental specialists, and provide clear design briefs to CAD/BIM teams.
• Present technical findings to clients and stakeholders, support responses to RFIs, and contribute to proposal inputs and level of effort estimates for hydrology scopes.

• Candidates must have approximately 10 years of professional experience in hydrology/hydraulics design, with mandatory experience in the Gulf or Saudi Arabia.
• A bachelor's degree in civil engineering, water resources, or environmental engineering is required; a master's degree is an advantage.
• Proven delivery of drainage and flood solutions for infrastructure projects is essential. Railway or transportation corridor experience is a strong advantage, including cross drainage structures and corridor drainage systems.
• Familiarity with KSA/GCC authority standards and permitting processes is required.
• Proficient with hydrologic and hydraulic software such as HEC HMS, HEC RAS (1D/2D), SWMM/Storm
  
  CAD/Sewer
  
  GEMS/Civil Storm, Micro Drainage, and GIS tools (ArcGIS/QGIS). Experience with AutoCAD/Civil 3D and BIM coordination is expected.
• Strong capability in rainfall analysis (IDF curves), hydrograph development, infiltration and storage design, flood routing, sediment/scour considerations, and climate resilience assessments is needed.
• The role demands rigorous technical judgment, attention to detail, and clear communication. The engineer should demonstrate problem solving skills, stakeholder engagement, multidisciplinary coordination, and the ability to translate complex modeling into practical, buildable designs.
• A proactive approach to risk, constructability, and maintenance outcomes is essential.