Senior CAD Designer - Mechanical Piping & BIM

Interstate Mechanical Corp; Phoenix (AZ); Hybrid; USD 44,000 - 54,000; Full time

Benefits offered by this job

Medical, dental, and vision insurance

401(k)

Paid time off

Paid holidays

Company-paid life insurance

Short-term and long-term disability

Job summary

Interstate Mechanical LLC is seeking a CAD Designer for mechanical piping to join our operations/BIM team in Phoenix. You will produce and coordinate detailed piping drawings using AutoCAD Fabrication MEP, Revit, and Navisworks, ensuring code-compliance and alignment with project specs.

You will work with project managers, engineers, vendors, and field teams to support constructability, fabrication, and efficient system routing, including DX line sizing and coordination drawings.

Qualifications

• Minimum 5+ years of experience detailing mechanical piping systems.
• Experience with mechanical piping systems, or MEP design/detailing.
• Strong understanding of piping layouts, blueprints, contract documents, and construction coordination.
• Hands-on experience with AutoCAD Fabrication MEP, Revit, and Navisworks.
• Experience working in a BIM coordination environment and collaborating with multiple trades.
• Ability to identify design conflicts and propose practical resolutions.
• Ability to work independently, manage deadlines, and maintain accuracy with minimal supervision.

Responsibilities

• Develop and modify detailed mechanical piping system drawings using AutoCAD Fabrication MEP, Revit, and Navisworks.
• Detail piping systems for coordination, fabrication, and project execution.
• Design and coordinate mechanical piping systems, including chilled water lines, hot water heating lines, equipment connections, and related layouts.
• Produce isometric spool drawings for fabrication and project coordination.
• Review project specifications, contract plans, scopes of work, and submittals to ensure compliance with project requirements.
• Coordinate system routing, equipment layouts, material requirements, fixture schedules, and specification checklists.
• Confirm DX — Direct Expansion — line sizes and lengths with vendors to support proper equipment performance and compliance with manufacturer requirements.
• Create floor sleeve and wall penetration coordination drawings with required dimensions and elevations.
• Conduct site visits as needed to verify field conditions, review installation coordination, and identify cost-saving or constructability opportunities.
• Generate RFIs with clear descriptions of conflicts and suggested resolutions for project managers.
• Participate in BIM coordination meetings and collaborate with other trades to resolve conflicts.
• Conduct quality control checks on drawings to confirm accuracy, contract compliance, and efficient system routing.
• Assist in preparing CAD shop drawings, field turnover packages, access panel verifications, fixture schedules, and other project documentation.
• Use Bluebeam Revu for document markup and collaboration.
• Use Procore for project documentation, RFI tracking, and coordination.
• Maintain strong professional relationships with general contractors, engineers, clients, vendors, project teams, and field teams.
• Attend internal and external project coordination meetings as required.

Skills

Detail oriented

Team collaboration

Independent work

Problem solving

Tools

AutoCAD Fabrication MEP

Revit

Navisworks

Bluebeam Revu

Procore

Job description

Interstate Mechanical LLC

CAD Designer – Mechanical Piping

1841 East Washington Street
Phoenix, AZ 85034

Salary: 32.00 - 39.00 USD / HOUR

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