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Senior Mechanical Engineer

Senior Mechanical Engineer

Harper HarrisonIrvine, CA, United States
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Senior Mechanical Engineer

Location : Irvine, CA or Sacramento, CA (Hybrid – 3 days onsite)

Employment Type : 12-Month Contract (contract to hire)

We are seeking a Senior Mechanical Design Engineer with a strong background in HVAC system design and building automation systems (BAS) to join a small, specialized engineering team. This role focuses on individual design work, taking projects from concept through construction documents, while also engaging with clients and project teams to deliver high-quality solutions.

Responsibilities :

  • Lead HVAC design for remodels (60%) and new construction (40%) projects.
  • Develop mechanical designs from concept to construction documents, including load calculations, equipment sizing, and system layouts.
  • Produce and finalize drawings using Revit and AutoCAD.
  • Incorporate plumbing design knowledge to support HVAC systems.
  • Coordinate with internal engineers, consultants, and clients to ensure project success.
  • Engage with clients onsite to discuss project requirements, explain design intent, and ensure satisfaction.
  • Deliver projects of varying size and complexity.

Experience & Background :

  • 5+ years of mechanical design engineering experience with a strong focus on HVAC.
  • Bachelor’s degree in Mechanical Engineering or a closely related field (architectural, healthcare, facilities, or industrial engineering with strong MEP focus).
  • Experience in BAS and familiarity with plumbing design.
  • Proficiency in Revit and AutoCAD (ALTA / KAD).
  • Strong client-facing skills, able to communicate clearly and effectively onsite.
  • Proven ability to take a project from concept through completion with minimal oversight.
  • Comfortable in a hybrid work environment (3 days in office).

    • Preferred / Bonus :

  • LEED AP certification
  • PE License
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