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Sr Process Engineer Jobs in Rancho Cucamonga, CA

Worley Alaska

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 ...

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 ...

ZEISS

Process Engineer II

Ontario, CA

$99K - $124K/yr

As an engineering liaison, support CAPA projects and root cause analysis to investigate productivity or quality issues with assistance from Operations and Quality Management. * Assist Sr. Process ...

New

ZEISS

Process Engineer II

Ontario, CA · On-site

$99K - $124K/yr

As an engineering liaison, support CAPA projects and root cause analysis to investigate productivity or quality issues with assistance from Operations and Quality Management. * Assist Sr. Process ...

Crown Technical Systems

Process Engineer

Fontana, CA · On-site

$86K - $118K/yr

The " Process Engineer " will be based in Fontana, Ca , reporting to the Director of Engineering. In charge for process-engineering capabilities focused on cost, quality and delivery improvements in ...

Flex Ltd.

Process Engineer

Fontana, CA · On-site

$86K - $118K/yr

The " Process Engineer " will be based in Fontana, Ca , reporting to the Director of Engineering. In charge for process-engineering capabilities focused on cost, quality and delivery improvements in ...

Flex

Process Engineer

Fontana, CA · On-site

$86K - $118K/yr

The " Process Engineer " will be based in Fontana, Ca , reporting to the Director of Engineering. In charge for process-engineering capabilities focused on cost, quality and delivery improvements in ...

Crown Technical Systems

Process Engineer

Fontana, CA · On-site

$86K - $118K/yr

The " Process Engineer " will be based in Fontana, Ca , reporting to the Director of Engineering. In charge for process-engineering capabilities focused on cost, quality and delivery improvements in ...

Crown Technical Systems

Process Engineer

Fontana, CA · On-site

$86K - $118K/yr

The " Process Engineer " will be based in Fontana, Ca , reporting to the Director of Engineering. In charge for process-engineering capabilities focused on cost, quality and delivery improvements in ...

syncreon

Process Engineer

Rialto, CA · On-site

$90K - $112K/yr

Interested in joining a dynamic and growing 3PL as a Process Engineer where lots of engineering challenges await? Our engineering team, based in Rialto, working on continuous improvements ...

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All JobsSr Process Engineer JobsSr Process Engineer Jobs in Rancho Cucamonga, CA

Sr Process Engineer information

See Rancho Cucamonga, CA salary details

$76.6K

$123.8K

$174.2K

How much do sr process engineer jobs pay per year?

As of Aug 18, 2026, the average yearly pay for sr process engineer in Rancho Cucamonga, CA is $123,771.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,300.00 and $137,400.00 per year, depending on experience, location, and employer.

What is a Sr Process Engineer?

Senior Process Engineers are experienced professionals responsible for designing, optimizing, and overseeing the processes used in manufacturing or production environments. They analyze workflows, troubleshoot process issues, and implement improvements to increase efficiency, reduce costs, and ensure product quality. Sr Process Engineers often lead teams, manage projects, and work closely with other departments such as quality assurance, maintenance, and operations. Their expertise is crucial in industries like chemicals, pharmaceuticals, oil and gas, and food processing. They typically hold a degree in engineering and have several years of experience in process engineering roles.

What are the key skills and qualifications needed to thrive as a Sr Process Engineer?

To thrive as a Sr Process Engineer, you need a solid background in chemical, mechanical, or industrial engineering, often with a bachelor's or master's degree and relevant industry experience. Familiarity with process simulation software (such as Aspen Plus or HYSYS), Six Sigma or Lean certifications, and knowledge of safety and regulatory standards are typically required. Strong problem-solving, project management, and communication skills help distinguish top performers in this role. These skills and qualifications are vital for optimizing processes, ensuring efficiency and safety, and driving continuous improvement in complex manufacturing environments.

How does a Sr Process Engineer typically collaborate with cross-functional teams to improve manufacturing efficiency?

Sr Process Engineers work closely with teams such as production, quality assurance, maintenance, and R&D to identify areas for process optimization. They often lead or participate in cross-functional meetings to gather data, analyze workflow bottlenecks, and implement solutions that enhance efficiency and product quality. Effective communication and project management skills are essential, as Sr Process Engineers must balance technical requirements with practical constraints while ensuring all stakeholders are aligned with proposed changes.

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

AspectSr Process EngineerProcess Engineer
QualificationsBachelor's degree in engineering, 5+ years experience, certifications like Six SigmaBachelor's degree in engineering or related field, 1-3 years experience
ResponsibilitiesLead process improvements, optimize manufacturing processes, mentor junior staffAssist in process development, data collection, support process optimization
Work EnvironmentManufacturing plants, industrial facilities, cross-functional teamsManufacturing settings, engineering teams, project-based tasks

The main difference between a Sr Process Engineer and a Process Engineer lies in experience, responsibility level, and scope of work. The Sr Process Engineer typically leads projects, mentors others, and has more advanced qualifications, while the Process Engineer supports and executes process improvements under supervision.

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 such as Six Sigma or PMP.

What does a senior process engineer do?

A senior process engineer designs, develops, and optimizes manufacturing or industrial processes to improve efficiency, safety, and quality. They analyze data, troubleshoot issues, and implement process improvements, often using tools like process simulation software and adhering to industry standards. They also mentor junior engineers and collaborate with cross-functional teams to ensure smooth operations.

What are popular job titles related to Sr Process Engineer jobs in Rancho Cucamonga, CA?

For Sr Process Engineer jobs in Rancho Cucamonga, CA, the most frequently searched job titles are:

What job categories do people searching Sr Process Engineer jobs in Rancho Cucamonga, CA look for?

The top searched job categories for Sr Process Engineer jobs in Rancho Cucamonga, CA are:

What cities near Rancho Cucamonga, CA are hiring for Sr Process Engineer jobs?

Cities near Rancho Cucamonga, CA with the most Sr Process Engineer job openings:

Sr Process Engineer jobs near you
Infographic showing various Sr Process Engineer job openings in Rancho Cucamonga, CA as of August 2026, with employment types broken down into 1% As Needed, 81% Full Time, 15% Part Time, 2% Contract, and 1% Nights. Highlights an 89% Physical, 2% Hybrid, and 9% Remote job distribution, with an average salary of $123,771 per year, or $59.5 per hour.

Senior Process Engineer

Worley Alaska

Monrovia, CA • On-site

$130K - $191K/yr

Other

Medical, Dental, Vision, Retirement, PTO

Posted 4 days ago

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.

Apply