1

Sr Process Engineer Jobs in California (NOW HIRING)

Senior Process Engineer

San Jose, CA ยท On-site

$100K - $150K/yr

Sr. Process Engineer Reports To: Process Engineering Supervisor Summary: Perform functions to research, develop, document, qualify, and implement production processes for standard and custom packaged ...

Senior Process Engineer

Torrance, CA ยท 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 ...

Sr Process Engineer

San Jose, CA ยท On-site

$100K - $119K/yr

Sr. Process Engineer Reports To: Process Engineering Supervisor Summary: Perform functions to research, develop, document, qualify, and implement production processes for standard and custom packaged ...

Senior Process Engineer

Torrance, CA

$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 ...

Senior Process Engineer

Palo Alto, CA ยท On-site

$120 - $160/hr

Job Summary The Senior Process Engineer will support the development of a new silicon photonic product. They will drive the processes needed to deliver a Photonic Integrated Circuits (PIC) that meets ...

Senior Process Engineer

Alameda, CA ยท On-site

$150K - $350K/yr

The Role - Senior Process Engineer You'll lead the scale-up of our pilot into a demonstration plant, laying the groundwork for follow-on commercial facilities. You'll translate R&D into engineered ...

Position Summary We are seeking an innovative and highly motivated Senior Process Engineer to join the MSAT team who will contribute significantly to the development of our advanced cell therapy ...

Senior Process Engineer

Garden Grove, CA

$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 ...

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 ...

Senior Process Engineer

South San Francisco, CA ยท On-site

$125K - $161K/yr

Position Summary We are seeking an innovative and highly motivated Senior Process Engineer to join the MSAT team who will contribute significantly to the development of our advanced cell therapy ...

Position Summary We are seeking an innovative and highly motivated Senior Process Engineer to join the MSAT team who will contribute significantly to the development of our advanced cell therapy ...

Position Summary We are seeking an innovative and highly motivated Senior Process Engineer to join the MSAT team who will contribute significantly to the development of our advanced cell therapy ...

Sr. Process Engineer

Newbury Park, CA ยท On-site

$77K - $142K/yr

Senior Process Engineer (Photolithography) Shift: Day Shift (Mon-Fri) Position Summary: Photolithography engineer needed to support GaAs fab in 24x7 production operation environment. Scope of work ...

Showing results 21-40

Sr Process Engineer information

See California salary details

$74K

$119.5K

$168.3K

How much do sr process engineer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for sr process engineer in California is $119,530.00, according to ZipRecruiter salary data. Most workers in this role earn between $102,600.00 and $132,700.00 per year, depending on experience, location, and employer.

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.

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.

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.

What cities in California are hiring for Sr Process Engineer jobs? Cities in California with the most Sr Process Engineer job openings:
Infographic showing various Sr Process Engineer job openings in California as of August 2026, with employment types broken down into 1% As Needed, 78% Full Time, 15% Part Time, 2% Temporary, 3% Contract, and 1% Nights. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $119,530 per year, or $57.5 per hour.

Senior Process Engineer

GRAPEVINE OPERATING COMPANY LLC

Bakersfield, CA โ€ข On-site

$138K - $197K/yr

Full-time

Re-posted 2 days ago


Job description

Job Summary:

The Senior Process Engineer provides technical support for refinery operations. They are responsible unit monitoring, daily troubleshooting, operations support, process optimization, and development of small capital projects / modifications to existing units.

Essential Functions:

  • Oversee day-to-day operational performance and optimization to ensure safe operations and that, regulatory, commercial, and logistical requirements are met
  • Monitor catalyst health and proactively report catalyst performance and end of run projections. Work closely with the catalyst supplier when needed.
  • Identify opportunities for improvement (proactively and reactively)
  • Participate in alarm rationalization (AOA)
  • Inspect field equipment installation according to the design and fabricator’s specifications during unit outages and upgrades.
  • Inspect vessel internals for proper installation and tolerances of components
  • Work with engineering and operations personnel to troubleshoot process upsets in and provide feedback on RCA (root cause analysis) reports as needed.
  • Work with vendors, licensors, and contractors to support debottlenecking, optimization, and troubleshooting as needed to maintain safe and reliable operations.
  • Provide operational technical support during test runs, commissioning, startups and shutdowns
  • Monitor daily process indicators and communicate performance, optimization opportunities, and environmental performance. Daily interaction and communication with field and board/console operators.
  • Assist troubleshooting efforts with upsets, product quality incidents, meeting production plans, etc.
  • Provide after-hours support when appropriate – emergency call out, etc.
  • Utilize Key Performance Indicators (KPI) as part of routine reporting (WABT curve, fouling, chemical and catalyst budgets, yields, etc.)
  • Manage catalyst performance and coordinate catalyst change timing.
  • Develop justification and work scope for T/A and routine maintenance – specifically catalyst changeout, exchanger cleaning, furnace pigging, etc.
  • Publish technical recommendation memos and turnaround reports
  • Support T/A with potential extended work schedules and/or night shifts as appropriate
  • Support/review operations procedures for start-up and shutdown
  • Review and approve vendor chemical programs
  • Small to medium capital project process engineering support
  • Lead and participate in the MOC process and participate in hazard reviews (What-Ifs, HAZOPs), support Process Safety Information (PSI) and troubleshooting
  • Support unit operation within environmental limits
  • Perform environmental calculations (leaks, maximum intended inventory, etc.)
  • Lead investigations for process related events
  • Maintain current work lists with priorities
  • Perform other tasks as assigned

Required Skills/Abilities:

  • Strong interpersonal skills and extremely resourceful
  • Proven ability to provide process engineering support for large complex industrial projects 
  • Familiarity with applicable health and safety regulations
  • Strong technical, analytical and problem-solving skills
  • Ability to prioritize tasks and to delegate them when appropriate
  • Ability to function well in a high-paced and at times stressful environment
  • Proficient with Google Suite and Microsoft Office Suite

Education and Experience:

  • BS Chemical Engineering degree
  • MS and/or PhD Engineering degree, preferably in Chemical , preferred
  • 10+ years of process engineering operations support experience in petrochemical, refining, and/or renewable fuels processing.
  • Experience with renewable diesel production, hydroprocessing, hydrogen production, and gas plant equipment and ancillary support systems preferred

Physical Requirements:

  • Prolonged periods of sitting at a desk and working on a computer
  • Prolonged periods of standing and walking
  • Must be able to lift up to 50 pounds
  • Ability to perform repetitive movements over long periods of time
  • Requires frequent reaching, stooping, bending, kneeling, and crouching
  • Requires lifting, positioning, pushing, and/or transferring equipment and materials
  • Ability to work in confined spaces and wear self-contained breathing apparatus
  • Must be able to climb ladders and or stairs on tanks, vessels and structures; wear respirator; work around equipment containing high pressures and temperatures and various chemicals

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

Equal Employment Opportunity

Grapevine Operating Company provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.