Civil BIM Modeler📣 Job Ad

About the Role

UNIMAC - United Maintenance and Contracting Company is seeking a Civil BIM Modeler to join our team in Riyadh, Saudi Arabia. This full-time role focuses on developing, updating, and coordinating Civil 3D infrastructure models, supported by Revit modeling where necessary. The primary objective is to produce accurate and constructible BIM for roads, grading, pavements, utilities, site works, and infrastructure interfaces, while strictly adhering to project BIM standards, shared coordinates, model data, and submission readiness. This is a dedicated modeling and BIM production position; engineering design decisions, calculations, and final technical approvals remain with the responsible discipline engineer unless formally assigned.

Key Responsibilities

• Develop and maintain Civil 3D BIM models for infrastructure works, including roads, corridors, surfaces, grading, pavements, earthworks, and utility networks.
• Model and update gravity and pressure networks such as stormwater, sewer, water, TSE, irrigation, drainage structures, chambers, manholes, catch basins, ducts, trenches, and related site components.
• Support dry utility and infrastructure coordination modeling, including electrical, ICT, ELV, lighting, duct banks, pull boxes, and utility corridor interfaces as required by project scope.
• Utilize Revit for supporting infrastructure-related modeling, including structures, chambers, plant rooms, utility interfaces, architectural/structural coordination elements, families, and model updates when Civil 3D alone is insufficient.
• Prepare model-based deliverables such as plans, profiles, sections, shop drawings, as-built updates, quantity take-offs, schedules, and coordination views.
• Integrate survey data, design changes, red-line markups, field comments, and approved assumptions into the models with clear revision control.
• Run and support Navisworks or ACC model coordination, including clash review, issue tracking, viewpoints, and follow-up with discipline and site teams.
• Maintain BIM quality requirements, including naming, layers, property sets, shared parameters, LOD/LOI, work sets, coordinates, file health, and export checks.
• Prepare and check BIM exports such as DWG, IFC, NWC/NWD, DWFx/PDF sheets, and other formats required by the project information exchange process.

Core Modeling Systems and Coverage

The role primarily utilizes Civil 3D for comprehensive infrastructure modeling, encompassing roads, alignments, profiles, corridors, assemblies, surfaces, grading, pavements, earthworks, road furniture, utility corridors, and site coordination models. Coverage extends to Wet Utilities such as stormwater, sewer, potable water, TSE, irrigation pressure networks, culverts, chambers, manholes, catch basins, and outfalls. Dry Utilities include electrical, ICT, ELV, street lighting, duct banks, trenches, pull boxes, handholes, cable route coordination, and utility crossings. Revit serves as a supporting tool for infrastructure structures, buildings/interface zones, pump rooms, equipment spaces, utility chambers, families, details, sheets, and coordination elements as needed. Coordination and output tasks involve clash review, shared coordinates, model federation, shop drawing support, quantity extraction, as-built updates, and submission/export packages.

Expected Deliverables

• Civil 3D and Revit models prepared for internal coordination, consultant review, and formal submission.
• Shop drawings, plans, profiles, sections, details, schedules, and exports derived from or aligned with the BIM models.
• Updated as-built/record models based on survey data, redlines, site verification, and approved project information.
• Model coordination support, including clash viewpoints, issue notes, quantity summaries, and model QA/QC evidence when required.

Qualifications and Experience

Candidates should possess 2-5 years of relevant experience in Civil BIM modeling, with demonstrated proficiency in Civil 3D and Revit for infrastructure projects. A strong understanding of BIM standards, shared coordinates, model data management, and preparing models for submission is essential for this role.

Work Environment and Application

This is a full-time position based in Riyadh, Saudi Arabia, offering an opportunity to contribute to significant infrastructure projects. UNIMAC - United Maintenance and Contracting Company invites qualified candidates who meet the outlined requirements to apply.