Civil BIM Modeler – Roads & Infrastructure

Position Title : Civil BIM Modeler – Roads & Infrastructure

Department: Digital Delivery / BIMReports To : BIM Manager – Digital DeliveryWorks Closely With : Design & Site Engineers, Surveyors, QA/QC, Document Control, Consultant & Client BIM teams

Location: Qiddiya, Riyadh – Kingdom of Saudi Arabia (site / office based)About the RoleWe are looking for an experienced Civil BIM Modeler – Roads & Infrastructure to join our Digital Delivery team for the Qiddiya – Public Realm & Infrastructure project.The successful candidate will be responsible for developing, maintaining, coordinating and delivering information-rich Autodesk Civil 3D models for roads, grading, drainage and underground utilities, from design coordination through to LOD 500 As-Built and asset handover.This role is ideal for a technically strong Civil 3D professional with a tool-builder mindset, particularly someone experienced in Dynamo automation, Content Catalog Editor, custom Civil 3D parts, property sets and BIM information management.Key ResponsibilitiesRoad & Corridor ModelingDevelop horizontal alignments, vertical profiles and super elevation in accordance with project design criteria and applicable standards.Build and manage corridors, assemblies, regions and targeting for carriageways, medians, kerbs, footpaths, cycle tracks, parking and hardscape areas.Model intersections, roundabouts, ramps, driveways and tie-ins to existing ground.Create feature-line-based grading and surfaces.Develop custom subassemblies using Subassembly Composer where required.Produce finished-ground, datum and pavement-layer surfaces and undertake earthworks volume calculations.Underground Utilities & DrainageModel gravity networks including stormwater and sewer systems.Model pressure networks including potable water, irrigation, TSE and fire-water systems.Model manholes, catch basins, chambers, valve boxes, thrust blocks and headwalls.Check network connectivity, slopes, inverts, cover and clearances.Coordinate utilities against road, structural and MEP models and support clash resolution.Content Catalog & Parts ManagementCreate, edit and maintain Civil 3D pressure pipe content catalogs using Content Catalog Editor (.SQLite).Manage pipes, fittings, valves and appurtenances with correct sizes, materials and pressure classes.Create and maintain custom gravity pipe and structure parts using Part Builder.Maintain project Parts Lists in accordance with approved material submittals.Embed asset codes, classifications, manufacturers and material parameters into catalog parts.Control catalog versions and distribute approved content through the CDE.Dynamo & AutomationDevelop and maintain Dynamo for Civil 3D workflows, including Python/CPython3 nodes.Automate repetitive activities such as:Property Set and COBie data population from Excel/Asset Registers.Quantity take-off extraction.Model health and naming-convention checks.Automated labelling and point creation.Sheet and view-frame generation.Document scripts with purpose, inputs, outputs and version information.BIM Delivery, QA/QC & Information ManagementDevelop models in accordance with the project EIR, BEP, LOD/LOIN requirements and Digital Delivery standards.Apply ISO 19650 naming conventions and information container requirements.Manage Data Shortcuts and model federation.Support IFC 4.x exports and property mapping.Prepare federated models in Navisworks and coordinate issues through Revizto.Perform model self-QA before submissions, including:Surface integrityAlignment/profile continuityPipe connectivityProperty completenessCoordinate system complianceClose consultant/client review comments within agreed timelines.Update models to LOD 500 As-Built using survey data, redlines and inspection records.Support Asset Register and COBie handover.Produce plan/profile, cross-section and detail sheets using Civil 3D Plan Production and Sheet Set Manager.Collaboration & Continuous ImprovementPublish and share models through Autodesk Construction Cloud / Aconex following WIP → Shared → Published workflows.Participate in BIM coordination meetings and support RFI/clash resolution.Communicate technical/model issues clearly with design and site teams.Mentor junior modelers.Contribute to BIM templates, standards, automation tools and lessons learned.Technical RequirementsAutodesk Civil 3D: Expert level – alignments, profiles, corridors, grading, surfaces and super elevation.Gravity & Pressure Networks: Advanced.Content Catalog Editor: Advanced.Part Builder / Parts Lists: Advanced.Dynamo for Civil 3D: Advanced, including packages such as Civil3DToolkit/Camber and Python nodes.Property Sets & COBie: Advanced.Navisworks / Revizto: Working level.ACC / Aconex: Working level.IFC 4.x: Working knowledge.ISO 19650 / BEP / LOIN: Working knowledge.DesirableSubassembly Composer.Infraworks / ArcGIS / GIS workflows.Revit coordination.Python, Excel VBA or Power BI.Experience with LOD 500 As-Built and asset handover.Qualifications & ExperienceBachelor's degree or Diploma in Civil Engineering, Civil Engineering Technology or a related discipline.Minimum 5 years of experience as a Civil BIM Modeler / Civil 3D Specialist.Minimum 3 years of experience on road/highway infrastructure projects.Demonstrable experience delivering Civil 3D road corridors and underground utility networks.Proven experience creating/editing Civil 3D content catalogs and custom parts.Practical experience developing Dynamo for Civil 3D scripts.Strong written and spoken English.Desirable ExperienceExperience on Saudi giga-projects or major GCC infrastructure projects, such as Qiddiya, NEOM, Red Sea Global, ROSHN or Diriyah.Autodesk Certified Professional – Civil 3D for Infrastructure Design.ISO 19650 awareness/certification.Experience with LOD 500 As-Built models, Asset Registers and COBie handover.Arabic language skills.Valid KSA driving license.Transferable Iqama.