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Principal Mechanical Engineer

Job in Monrovia, Los Angeles County, California, 91017, USA
Listing for: Worley Group, Inc
Full Time position
Listed on 2026-05-03
Job specializations:
  • Engineering
    Process Engineer, Manufacturing Engineer, Mechanical Engineer, Quality Engineering
Salary/Wage Range or Industry Benchmark: 142508 - 209571 USD Yearly USD 142508.00 209571.00 YEAR
Job Description & How to Apply Below

Purpose

Join Worley's Monrovia office as a Principal Process Engineer within the Rotating Engineering Group, where you'll provide technical and leadership excellence across multidisciplinary projects. In this role, you'll lead project execution and discipline deliverables, ensuring alignment with company and client procedures while driving continuous improvement in work processes. You'll develop innovative technical solutions to complex engineering challenges, oversee and mentor a team of engineers, and support the successful delivery of safe, efficient, and high-quality project outcomes.

Responsibilities
  • The candidate will work within a team framework of other disciplines and will have an understanding of the broad organizational implications of the work being performed.
  • Will be updating schedules and progress reports.
  • May be asked to generate budgets for new work.
  • Will be interfacing with Project Management and the Customers regularly.
  • Will be required to develop/check specifications, data sheets, technical bids, purchase orders, resolve technical queries from vendors on various Compressor and Pump equipment, able to coordinate project requirements with other disciplines, project staff and clients.
  • Will be required to maintain quality deliverables throughout the procurement of the equipment.
  • Will be required to support work share activities with overseas offices on Rotating Equipment deliverables.
  • Will be required to develop/support hour estimation, TIC estimates, deliverable requirements and personnel loading for the Rotating Engineering scope of the project.
  • Able to support or fill in for the Mechanical lead as requested.
Qualifications

Technical/Industry Experience and Qualifications Requirements:

  • Thorough knowledge of applicable theories, practices, and accepted office procedures.
  • Typically, minimum of 8 years of Rotating (Compressor and Pump) Engineering experience in the Petroleum-Chemical Industry.
  • 5 years in other Mechanical equipment or packaged equipment.
  • Excellent written and verbal communication skills in English.
  • Emphasis on reciprocating compressor experience, with working knowledge of API 617, 614, 670 and 671.
Preferred Qualifications
  • Knowledge of API, ANSI, NEMA, ASTM specifications.
Additional Information
  • Positions located in Monrovia, CA, Worley office location and not eligible to support remotely.
  • May be required to travel to the vendors facilities.
  • Salary Range $142,508-$209,571 commensurate with experience and level of position.
  • Benefits:
    Eligible for PTO, 401k, medical, vision, dental, etc.
Education - Qualifications, Accreditation, Training Required
  • BS or MS in Mechanical Engineering or equivalent.
Preferred
  • Relevant professional registration preferred.

San Francisco Fair Chance Ordinance:
Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Los Angeles Fair Chance Initiative:
We will consider for employment all qualified Applicants, including those with Criminal Histories, in a manner consistent with the requirements of applicable state and local laws, including the City of Los Angeles' Fair Chance Initiative for Hiring Ordinance.

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