CAD Designer

Benefits:

• Part Time
• Competitive salary
• Flexible schedule

Location:

Galveston, TX

Industry: Refining / Petrochemical / Terminal Operations

Employment Type:

Contract / Part-Time

Experience Level: Mid-Level Preferred

On Grid Infrastructure Services is seeking a detail-oriented and experienced CAD Designer to support engineering and operations projects within the refining, petrochemical, and terminal operations industries, with a preference for candidates experienced in crude distillation units (CDUs) and associated process systems. This part-time role will support drafting, design updates, as-built documentation, and project deliverables for brownfield facility modifications and operational improvement projects.

The ideal candidate will have hands‑on experience working with refinery or terminal facility drawings, including P&IDs, plot plans, equipment layouts, piping isometrics, and electrical/instrumentation drawings.

• Develop, revise, and maintain CAD drawings for refinery, petrochemical, and terminal facilities
• Update and manage:
  • Piping & Instrumentation Diagrams (P&IDs)
  • General arrangement drawings
  • Equipment layouts
  • Plot plans
  • Isometric drawings
  • Structural and support drawings
• Incorporate field redlines and produce accurate as-built documentation
• Coordinate with engineers, operations personnel, maintenance teams, and contractors
• Support Management of Change (MOC) documentation updates
• Assist with design packages for small capital and maintenance projects
• Ensure drawings comply with company drafting standards and applicable industry codes
• Participate in occasional field walk-downs in operating industrial facilities

• 3+ years of CAD drafting/design experience in:
  • Refining
  • Petrochemical
  • Midstream terminal operations
  • Industrial process facilities
• Proficiency with AutoCAD required
• Strong understanding of refinery/process facility documentation and terminology
• Experience interpreting P&IDs and piping layouts
• Familiarity with crude distillation units and related systems preferred
• Ability to work independently with minimal supervision
• Strong attention to detail and organizational skills

• Experience with AutoCAD Plant 3D or CADWorx
• Knowledge of API, ASME, and OSHA standards applicable to refining facilities
• Prior experience supporting brownfield or operating facilities
• Field verification and walk-down experience
• TWIC card or ability to obtain one preferred

• Part-time schedule with flexible hours based on project workload
• Onsite work is required
• Candidates local to the Galveston/Houston Gulf Coast region strongly preferred

Compensation will be based on experience, qualifications, and availability.