Position Title : Civil BIM Modeler – Roads & Infrastructure
Department : Digital Delivery / BIM
Reports To : BIM Manager – Digital Delivery
Works 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 Role
We 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 Responsibilities
Road & Corridor Modeling
- Develop 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 & Drainage
- Model 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 Management
- Create, 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 & Automation
- Develop 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 Management
- Develop 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 integrity
- Alignment/profile continuity
- Pipe connectivity
- Property completeness
- Coordinate system compliance
- Close 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 Improvement
- Publish 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 Requirements
- Autodesk 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.
Desirable
- Subassembly Composer.
- Infraworks / ArcGIS / GIS workflows.
- Revit coordination.
- Python, Excel VBA or Power BI.
- Experience with LOD 500 As-Built and asset handover.
Qualifications & Experience
- Bachelor'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 Experience
- Experience 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.
