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Senior Process Engineer Jobs in Santa Rosa, CA (NOW HIRING)

Calpine

Process Control Engineer III

Middletown, CA · On-site

$109K - $139K/yr

Collaborates with senior professionals in selection of methods, techniques, and analytical approach ... Process Control Engineer III - Qualifications * Bachelor's degree Engineering * 10+ yrs related ...

Calpine

Process Control Engineer III

Middletown, CA · On-site

$109K - $139K/yr

Collaborates with senior professionals in selection of methods, techniques, and analytical approach ... Process Control Engineer III - Qualifications * Bachelor's degree Engineering * 10+ yrs related ...

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All JobsSenior Process Engineer JobsSenior Process Engineer Jobs in Santa Rosa, CA

Senior Process Engineer information

See Santa Rosa, CA salary details

$82K

$132.4K

$186.4K

How much do senior process engineer jobs pay per year?

As of Jul 3, 2026, the average yearly pay for senior process engineer in Santa Rosa, CA is $132,420.00, according to ZipRecruiter salary data. Most workers in this role earn between $113,700.00 and $147,100.00 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, and why are they important?

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.

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 Santa Rosa, CA? The most popular types of Process Engineer jobs in Santa Rosa, CA are:
What are popular job titles related to Senior Process Engineer jobs in Santa Rosa, CA? For Senior Process Engineer jobs in Santa Rosa, CA, the most frequently searched job titles are:
What cities near Santa Rosa, CA are hiring for Senior Process Engineer jobs? Cities near Santa Rosa, CA with the most Senior Process Engineer job openings:
Senior Process Engineer jobs near you
Infographic showing various Senior Process Engineer job openings in Santa Rosa, CA as of June 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $132,420 per year, or $63.7 per hour.
R&D Process Engineer, Advanced Bonding Process Development

R&D Process Engineer, Advanced Bonding Process Development

Diamond Foundry

Bodega Bay, CA • On-site

$125K - $145K/yr

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 7 days ago

Job description

Diamond Foundry Inc. is solving the thermal limitation at the foundation of today's most exciting tech industries -- AI & cloud compute, electric-car power electronics, and 5G/6G wireless. We have managed to produce the world's first single-crystal diamond wafers and are now on a mission to put a diamond behind every chip. We are the rare unicorn that has grown fast and profitably. We received $515m in funding and are executing a multi-$B expansion plan for one of the greenest forms of tech manufacturing: converting greenhouse gas into diamond wafers using zero-emission energy.

We are seeking an on-site R&D Process Engineer to join our AI Chips team. This role will support customer prototyping and internal process development for advanced packaging applications, with a focus on integrating single-crystal diamond with AI customer devices to demonstrate thermal and performance benefits.

The ideal candidate is a hands-on process engineer with strong technical problem-solving skills, a collaborative mindset, and the ability to support fast-paced customer and internal development programs.

This position will be located in our San Jose office. 
Responsibilities

  • Support customer prototyping projects to integrate single-crystal diamond with customer devices and demonstrate thermal and performance benefits.

  • Develop advanced packaging and bonding processes adaptable to diverse customer device designs, material stacks, package configurations, and integration requirements.

  • Evaluate, select, and optimize bonding technologies, including pressure/pressureless sintering, thermocompression, surface/plasma-activated bonding, and emerging methods.

  • Drive internal process development and validation, including cleaning, metallization, DOE-based bonding optimizations, process characterization, failure analysis, and reliability testing.

  • Manage end-to-end project execution, covering schedules, technical risks, cross-functional communication, customer updates, and technical reports.

Requirements

  • Bachelor's or advanced degree in materials science, electrical engineering, chemical engineering, or a related field.

  • Experience in semiconductor packaging, advanced materials, process engineering, device integration, or related technical development is preferred.

  • Familiarity with bonding, thin-film deposition, surface preparation, metrology, failure analysis, reliability testing, or similar process technologies is desirable.

  • Strong problem-solving skills and willingness to learn new materials, tools, and processes.

  • Good communication skills and ability to work effectively with cross-functional teams, hands-on, detail-oriented, motivated, and comfortable working in a fast-paced development environment.

$125,000 - $145,000 a year
The position is eligible for company shares. Actual compensation may be higher or lower in the range based on various factors, including, but not limited to a candidate's job duties, experience, and location. We will also consider higher-level candidates and salary will be adjusted accordingly.
Diamond Foundry believes in supporting our employees from the workplace to their personal and home life. We provide eligible employees with an opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work. Perks include employee discounts to VRAI. Our benefits begin as early as your first day of employment. Medical and vision coverage are retroactive to your start date, while dental and voluntary benefits take effect once you've completed your enrollment.

Diamond Foundry is an Equal Opportunity Employer and considers qualified applicants for employment without regard to race, color, creed, religion, national origin, sex, sexual orientation, gender identity and expression, age, disability, veteran status, or any other protected factor under federal, state or local law.

Diamond Foundry Inc. is committed to operating in full compliance with all applicable state and federal laws. Our commitment extends to ensuring that our manufacturing and engineering departments adhere to the highest standards of legal and regulatory compliance. Additionally, these departments may have specific physical requirements to ensure the safety and efficiency of our operations. We prioritize the well-being of our employees and strive to create a work environment that promotes both legal compliance and the optimal functioning of our manufacturing and engineering processes.

Manufacturing and Engineering Departments Physical Requirements:
-Use appropriate PPE and follow all safety policies, practices, and procedures.
-This position will often: Sit, stand for long periods, walk, grasp, reach with hands and arms, lift below and above shoulders, bend, twist at the waist,  climb, balance, stoop, squat,  kneel, crawl, talk, hear, see, use fine finger manipulation, and complete repetitive motions. 
-Some tasks may require the use of ladders or stairs
-Some tasks may require driving or the use of foot controls
-Lift/carry and push/pull up to 50 pound

This employer participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.
If E-Verify cannot confirm that you are authorized to work, this employer is required to give you written instructions and an opportunity to contact Department of Homeland Security (DHS) or Social Security Administration (SSA) so you can begin to resolve the issue before the employer can take any action against you, including terminating your employment.
Employers can only use E-Verify once you have accepted a job offer and completed the Form I-9.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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