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Senior Principal Process Engineer

Worley Group, Inc
Monrovia, CA Full Time
POSTED ON 1/6/2026
AVAILABLE BEFORE 3/6/2026
Building on our past. Ready for the future

Worley is a global professional services company of energy, chemicals and resources experts headquartered in Australia.

Right now, we're bridging two worlds as we accelerate to more sustainable energy sources, while helping our customers provide the energy, chemicals and resources that society needs now.

We partner with our customers to deliver projects and create value over the life of their portfolio of assets. We solve complex problems by finding integrated data-centric solutions from the first stages of consulting and engineering to installation and commissioning, to the last stages of decommissioning and remediation. Join us and help drive innovation and sustainability in our projects.

Purpose:

Worley is seeking a Senior Principal Process Engineer for the Monrovia, CA office location. In a lead position you will apply advanced engineering techniques and analysis and may serve as a technical consultant in an area of specialty. You may provide discipline supervision for one larger or one or more smaller projects.

Responsibilities:

  • Generation, review, and approval of the Process deliverables: H&MB, PFD's, P&IDs, equipment specifications, hydraulics calculation, contingency analysis & process instrument data in their assigned area.
  • Conducting Process studies as needed.
  • Mentoring junior Process Engineers.
  • Reviewing requisitions, technical bid evaluations and providing support to other disciplines.
  • Proactively resolving any discrepancies between Worley and its Customer's requirements.
  • Manage process engineering services that meet Worley', its customers' and applicable statutory and regulatory specifications, on time and within budget.
  • Manage process engineering project requirements.
  • Manage process engineering services such as:
    • participate in relevant meetings, prepare progress reports and comply with required checking procedures.
    • ensure the project scope is clear and that changes comply with project change management processes.
    • provide advice during procurement, construction and commissioning activities. For example, oversee requisitions, technical bid evaluations and purchase order preparation.
  • Act as the process engineering Lead on specific projects.
  • If responsible for a team:
    • outline project requirements including actively promoting workshare, where appropriate, assign tasks and supervise progress; and
    • ensure the required services meet Worley, its customers and applicable statutory and regulatory requirements, on time and within budget.
  • Proactively resolve any discrepancies between Worley and its Customer's requirements.
  • Keep up to date with the latest developments and technical innovations in process engineering.
  • If required, assist and support junior personnel within the process engineering team.
  • Communicate effectively with the process engineering team and project stakeholders, including the Customer.
  • Identify issues and problems, develop appropriate solutions, and ask for assistance when required.

What you will bring
Technical/Industry Experience and Qualifications Requirements:

  • Experience leading and managing medium/large process teams.
  • Excellent front-end design capability with expertise in conceptual design and process simulation.
  • Excellent technical and practical engineering skills and ability to consistently deliver quality, accurate and timely work to Worley and its clients.
  • Excellent knowledge of the fundamental requirements of process engineering, and the basic requirements of other engineering fields.
  • Excellent knowledge of applicable local and international standards and statutory and regulatory specifications.
  • Competent use of relevant software such as MS Office Suite and process engineering specific software.
  • Extensive technical and practical experience in process engineering in the same or similar industry including experience in working in multi-disciplinary projects and teams.
  • Excellent technical and practical engineering skills and ability to consistently deliver quality, accurate and timely work to Worley and its clients.
  • Excellent knowledge of the fundamental requirements of the process engineering, and the basic requirements of other engineering fields.
  • Excellent knowledge of applicable local and international standards and statutory and regulatory specifications.
  • Competent use of relevant software such as MS Office Suite and process engineering specific software.
  • Extensive technical and practical experience in process engineering in the same or similar industry including experience in working in multi-disciplinary projects and teams.

Additional Information:

  • This position is in California.
  • Salary Range $177,521-$261,062.

Education - Qualifications, Accreditation, Training:

Required:

  • A recognized and relevant engineering degree or relevant postgraduate qualifications in engineering; management, project management or supervisory qualifications or equivalent.

Preferred:

  • Typically, 15 years plus process industry experience.
  • Refinery experience.
  • Oil and Gas experience.
  • Saudi Aramco experience.
  • Experience leading and managing medium/large process teams.
  • Chartered Professional Engineer (CPEng) status.

Los Angeles
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."

Moving forward together

We want our people to be energized and empowered to drive sustainable impact. So, our focus is on a values-inspired culture that unlocks brilliance through belonging, connection and innovation.

We're building a diverse, inclusive and respectful workplace. Creating a space where everyone feels they belong, can be themselves, and are heard.

And we're not just talking about it; we're doing it. We're reskilling our people, leveraging transferable skills, and supporting the transition of our workforce to become experts in today's low carbon energy infrastructure and technology.

Whatever your ambition, there's a path for you here. And there's no barrier to your potential career success. Join us to broaden your horizons, explore diverse opportunities, and be part of delivering sustainable change.

We're committed to building a diverse, inclusive and respectful workplace where everyone feels they belong, can bring themselves, and are heard. We provide equal employment opportunities to all qualified applicants and employees without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by federal, state, or local law.

Our policy is to conduct background checks for all candidates who accept an offer of employment with us.

Please note: No agency representation or submissions will be recognized for this vacancy.

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Worley is an equal opportunity employer and we create a working culture that embraces diversity and promotes inclusion and flexibility.

 

Salary : $177,521 - $261,062

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