Infrastructure Draftsman

Job Purpose

The Infrastructure Draftsman (Civil 3D & GIS) is responsible for preparing detailed, accurate 2D and 3D civil engineering drawings, alignment profiles, utility layouts, surface models, and earthwork calculations using AutoCAD Civil 3D and AutoCAD. The role plays a key part in supporting infrastructure projects—including roads, highways, storm water drainage, sewerage, water supply, and utility networks—from concept design through construction, final As-Built submission, and GIS mapping in full compliance with local municipal and utility authority standards.

Key Responsibilities:

• Develop detailed civil and infrastructure models using AutoCAD Civil 3D , including digital terrain models (DTM), ground surfaces, corridors, cross-sections, and longitudinal profiles.


• Draft multi-utility networks (storm water, foul sewer, potable water, irrigation, firefighting, wet and dry utilities) in compliance with project and local authority standards.


• Perform grading, corridor modeling, alignment creation, and volume calculations (cut and fill quantity take-offs) in Civil 3D.


• Prepare comprehensive As-Built Drawings based on final site survey data, redline markups, and actual field installations for road networks, levels, and underground utility assets.

Authority Compliance & GIS Deliverables

• Format and convert CAD/Civil 3D As-Built drawings into GIS-compliant datasets (e.g., Shapefiles, Geodatabase formats, spatial attribute tagging) as required by local authorities, municipalities, and utility service providers.


• Ensure all As-Built plans and GIS spatial data conform strictly to local authority submission guidelines, coordinate reference systems (e.g., national grid/datum), attribute schema, and layer naming conventions.


• Identify and resolve utility clashes across discipline layouts using Civil 3D clash detection tools and spatial coordination.


• Coordinate closely with Land Surveyors and GIS Specialists to verify survey points, coordinate accuracy, invert levels, and asset attributes prior to final authority submittal.

Standard & Quality Control

• Maintain drawing register logs, revision controls, CAD standard libraries, and GIS attribute metadata across project deliverables.


• Ensure all CAD/GIS drawings comply with company standards, layering conventions, sheet setups, and authority drafting frameworks.


• Assist in resolving technical comments or NOC/As-Built rejection feedback from municipal and government utility authorities.

Requirements & Qualifications:

Education & Experience:

• Education: Diploma or Associate Degree in Civil Engineering, Architectural Drafting, GIS, or a related technical field.


• Experience: Minimum 3–5 years of experience as an Infrastructure Draftsman specializing in roads, grading, wet/dry utility networks, and As-Built/GIS authority submissions .


• Proven track record in preparing and securing authority approval for final As-Built drawings and GIS data packages.

Technical Skills:

• Software Expertise:


• AutoCAD Civil 3D (Advanced proficiency: surfaces, corridors, pipe networks, alignments, grading, profiles).


• AutoCAD (Advanced 2D/3D).


• GIS Software (QGIS, ArcGIS, or AutoCAD Map 3D/Civil 3D GIS tools for data export, attribute tagging, and shapefile creation).


• Navisworks (Basic to intermediate knowledge for clash detection is an advantage).


• Authority & Spatial Knowledge:


• In-depth understanding of local authority submission workflows, NOC procedures, and As-Built/GIS submission standards.


• Strong understanding of spatial coordinate systems, georeferencing, survey data import/export, and GIS data structuring.


• Solid understanding of infrastructure construction details (manholes, catch basins, pipe beddings, thrust blocks, road pavements).

Core Competencies

• High attention to detail and spatial precision in drawing layout and technical drafting.


• Ability to work efficiently under tight deadlines and manage multiple authority submittals simultaneously.


• Strong team communication skills to liaise with project engineers, land surveyors, consultants, and municipal representatives.

Key Performance Indicators (KPIs)

• On-time delivery of accurate shop drawings, plan/profiles, and As-Built drawing packages.


• First-time approval rate of As-Built and GIS submissions with local authorities/utility providers.


• Full compliance of exported GIS layers and attribute tables with local municipal spatial data guidelines.

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