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Senior Process Engineer Jobs in Orange, CA (NOW HIRING)

Worley

Senior Process Engineer

Monrovia, CA · On-site

$130K - $191K/yr

Senior Process Engineer Worley Group Monrovia, California Summary or Description Worley is hiring a Senior Process Engineer to join our team in Monrovia, CA. As a global professional services company ...

Valar Atomics

Senior Process Engineer

Torrance, CA · On-site

$108K - $140K/yr

The Role Valar Atomics is seeking an experienced Senior Process Engineer to lead the design, development, testing, and operation of helium systems supporting next-generation high-temperature gas ...

Valar Atomics

Senior Process Engineer

Torrance, CA · On-site

$108K - $140K/yr

The Role Valar Atomics is seeking an experienced Senior Process Engineer to lead the design, development, testing, and operation of helium systems supporting next-generation high-temperature gas ...

Amrize

Senior Process Engineer

Garden Grove, CA · On-site

$105K - $137K/yr

We're seeking a Senior Process Engineer who's ready to be part of a company committed to formulating everyday success for every customer through innovative, reliable products used to adhere, seal ...

Amrize

Senior Process Engineer

Garden Grove, CA · On-site

$105K - $137K/yr

We're seeking a Senior Process Engineer who's ready to be part of a company committed to formulating everyday success for every customer through innovative, reliable products used to adhere, seal ...

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All JobsProcess Engineer JobsSenior Process Engineer JobsSenior Process Engineer Jobs in Orange, CA

Senior Process Engineer information

See Orange, CA salary details

$80.1K

$129.4K

$182.1K

How much do senior process engineer jobs pay per year?

As of Aug 10, 2026, the average yearly pay for senior process engineer in Orange, CA is $129,383.00, according to ZipRecruiter salary data. Most workers in this role earn between $111,100.00 and $143,700.00 per year, depending on experience, location, and employer.

What is the difference between Senior Process Engineer vs Process Engineer?

AspectSenior Process EngineerProcess Engineer
QualificationsBachelor's or Master's in Engineering, often with 5+ years experienceBachelor's degree in Engineering or related field, typically 1-3 years experience
ResponsibilitiesLeading process improvements, mentoring, project managementSupporting process development, data analysis, assisting senior staff
Work EnvironmentDesign teams, manufacturing plants, R&D departmentsManufacturing facilities, engineering teams, operational support

Senior Process Engineers typically have more experience, leadership duties, and oversee complex projects, while Process Engineers focus on supporting process development and implementation. Both roles are essential in manufacturing and engineering industries, but the senior role involves greater responsibility and strategic planning.

What are the key skills and qualifications needed to thrive as a senior process engineer?

To thrive as a Senior Process Engineer, you need a strong background in chemical or process engineering, problem-solving skills, and typically a bachelor's or master's degree in a relevant field. Expertise in process simulation software (such as Aspen Plus or HYSYS), Six Sigma or Lean certifications, and familiarity with process control systems are highly valued. Outstanding analytical abilities, leadership, and effective communication set top performers apart in this role. These skills and qualifications are crucial for optimizing processes, ensuring safety and compliance, and leading teams to achieve operational excellence.

What does a senior process engineer do?

A Senior Process Engineer is responsible for designing, optimizing, and overseeing processes within manufacturing or production environments. They analyze workflows, troubleshoot issues, and implement improvements to increase efficiency, safety, and product quality. Senior Process Engineers often lead projects, mentor junior engineers, and collaborate with cross-functional teams to ensure operational excellence. Their expertise is vital in industries like chemicals, pharmaceuticals, oil and gas, and food processing.

How much does a senior process engineer earn?

A senior process engineer typically earns between $80,000 and $130,000 annually, depending on experience, industry, and location. They often have specialized skills in process optimization, project management, and may hold certifications like Six Sigma or PE licensure.

What are some common challenges senior process engineers face when working on cross-functional teams?

Senior Process Engineers often collaborate with professionals from various departments, such as operations, quality, and maintenance. A common challenge is aligning diverse priorities and communication styles to achieve shared project goals. Successfully managing these differences requires strong interpersonal and project management skills, as well as the ability to translate technical concepts for non-engineering colleagues. Regular meetings and clear documentation can help ensure everyone stays informed and engaged throughout the process.
What are the most commonly searched types of Process Engineer jobs in Orange, CA? The most popular types of Process Engineer jobs in Orange, CA are:
What are popular job titles related to Senior Process Engineer jobs in Orange, CA? For Senior Process Engineer jobs in Orange, CA, the most frequently searched job titles are:
What job categories do people searching Senior Process Engineer jobs in Orange, CA look for? The top searched job categories for Senior Process Engineer jobs in Orange, CA are:
What cities near Orange, CA are hiring for Senior Process Engineer jobs? Cities near Orange, CA with the most Senior Process Engineer job openings:
Senior Process Engineer jobs near you
Infographic showing various Senior Process Engineer job openings in Orange, CA as of August 2026, with employment types broken down into 1% As Needed, 78% Full Time, 16% Part Time, 4% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $129,383 per year, or $62.2 per hour.

Senior Process Engineer

Worley

Monrovia, CA • On-site

$130K - $191K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 21 days ago

Worley rating

8.0

Company rating: 8.0 out of 10

Based on 31 frontline employees who took The Breakroom Quiz

205th of 446 rated engineering

Job description

About us
Worley is a global company of energy, chemicals and resources experts headquartered in Australia. We partner with our customers to deliver projects and create value across the life of their assets. We specialize in consulting, engineering, procurement and construction across the project lifecycle, with services extending through to operations and decommissioning. Leveraging extensive experience and AI-enabled delivery, we support customers in navigating complexity as they meet today's needs and transition to more sustainable solutions.
Senior Process Engineer
Worley Group
Monrovia, California
Summary or Description
Worley is hiring a Senior Process Engineer to join our team in Monrovia, CA. As a global professional services company in the energy, chemicals, and resources sectors, Worley is helping bridge the transition to more sustainable energy solutions while continuing to deliver the resources the world depends on today.
Purpose:
You will provide process engineering services to Worley and its customers, including technical support and supervision within the process engineering team.
Responsibilities:
  • The overall supervision of the Process discipline work on a project.
  • Technical direction, advice, and control of the Process work.
  • Liaison with client discipline representatives to establish technical direction where not provided by codes & standards.
  • Scope definition, estimation, and progress control of the Process engineering activities.
  • Planning of man hour budgets, schedules, manpower loadings and staffing requirements, by skill and experience, to satisfy project requirements and direction given by the Engineering Manager.
  • Co-ordination of Process engineering design and drafting.
  • Complete complex process design activities including simulation.
  • Liaison with other discipline Lead engineers on technical issues and engineering matters.
  • Assisting asset/client Lead Project Engineers in the definition of the Process engineering work in any project, design approach and criteria, procedures for engineering work and timely production of deliverables.
  • Co-ordination and preparation of input to Essential Process Documents, as defined by the client/ contract. Where responsibility for updating the Master Documents is handed to the Lead Process Engineer, procedures shall be put in place to maintain document integrity.

What you will bring
Technical/Industry Experience and Qualifications Requirements:
  • Highly effective technical and practical engineering skills and ability to consistently deliver quality, accurate and timely work to Worley and its customers.
  • A sound knowledge of the fundamental requirements of the process of engineering, and the basic requirements of other engineering fields.
  • A sound knowledge of applicable local and international standards and statutory and regulatory requirements.
  • Competent use of process engineering specific software.
  • Competent use of relevant software such as MS Office Suite.
  • Substantial technical land practical experience in process engineering in the same or similar industry including experience in working in multi-disciplinary projects and teams.
  • Proven leadership skills.
  • Expert knowledge of process simulation packages such as HYSYS or PRO 11.
  • 8 plus years' experience.
  • On-site and/or in-refinery experience.
  • Oil and Gas experience.
  • Saudi Aramco experience.

Additional Information:
  • This position is in California.
  • Salary Range $130,356-$191,703.
  • Benefits: eligible for PTO, 401k, medical, vision, dental, etc.

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." #LI-AC1
Education - Qualifications, Accreditation, Training:
Required:
  • Bachelor's degree or master's degree in chemical Engineer or related field or equivalent.

Preferred:
  • Experience in petrochemical and refining with project design, execution, construction.

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.

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