Civil BIM Modeler – Roads & Infrastructure

Confidential; Riyadh; On-site; SAR 180,000 - 280,000; Full time

Job summary

Confidential seeks an experienced Civil BIM Modeler – Roads & Infrastructure for Qiddiya, Riyadh. You will develop, maintain and coordinate complex Civil 3D models for roads, drainage and utilities, from design coordination through to LOD 500 As-Built and asset handover.

The role requires a strong tool-builder mindset, Dynamo automation, Content Catalog Editor and BIM information management, with experience in project standards and CDE content distribution.

Qualifications

• Bachelor's degree in Civil Engineering or related field.
• Minimum 5 years' experience as a Civil BIM Modeler.
• Experience on road/highway infrastructure projects and LOD 500 As-Built.

Responsibilities

• Develop and manage Civil 3D road corridors, alignments and surfaces.
• Coordinate with design and site teams and resolve clashes.
• Create Dynamo for Civil 3D workflows and Python nodes.
• Publish federated models and support asset handover.
• Produce plan/profile sheets and maintain BIM documentation.

Skills

Civil 3D expertise

Dynamo automation

InfraWorks / GIS workflows

Python nodes for Civil 3D

Content Catalog Editor

Education

Bachelor's degree in Civil Engineering

Tools

Navisworks

Aconex

Part Builder

Content Catalog Editor

Python

Job description

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

• 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.
• 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.
• 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.
• Surface integrity
• Alignment/profile continuity
• Pipe connectivity
• Property completeness
• 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.
• 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.
• 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.
• Part Builder / Parts Lists: Advanced.
• Dynamo for Civil 3D: Advanced, including packages such as Civil3DToolkit/Camber and Python nodes.
• Property Sets & COBie: Advanced.
• ACC / Aconex: Working level.
• IFC 4.x: Working knowledge.
• ISO 19650 / BEP / LOIN: Working knowledge.
• 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.
• Experience on Saudi giga-projects or major GCC infrastructure projects, such as Qiddiya, NEOM, Red Sea Global, ROSHN or Diriyah.
• Experience with LOD 500 As-Built models, Asset Registers and COBie handover.