Engineer II, Mechanical Engineering

Entegris; San Luis Obispo (CA); On-site; USD 95,000 - 100,000; Full time

Benefits offered by this job

401K with employer match

Health, dental and vision insurance

Flexible work schedule

Paid time off (PTO)

Education assistance

Job summary

Entegris is seeking a Mechanical Engineer II to join our Engineering team in San Luis Obispo, CA. You will design and develop pressure vessels for high-purity semiconductor purification systems and work cross-functionally with R&D, Manufacturing, and Quality to ensure safety, performance, and compliance.

You will perform stress analysis, create detailed 2D drawings and BOMs in SolidWorks, and engage on the factory floor to troubleshoot production issues, contributing to on-time delivery and

Qualifications

• Bachelor’s degree in Mechanical Engineering or closely related field.
• 2–4 years of professional experience with pressure vessels.
• Experience with SolidWorks; 3D modeling and 2D drafting.
• Familiarity with ASME BPVC or similar codes is preferred.

Responsibilities

• Lead the mechanical design of Point of Use (POU) pressure vessels used for containing high-purity purification media.
• Collaborate with Research & Development to determine media types, form factors, and geometric requirements for purifier products.
• Evaluate and select filtration media to meet pressure drop, flow rate, and contamination control requirements.
• Design robust joints for pressure vessels, emphasizing welding specifications and bolted joint assemblies.
• Spend time on the manufacturing floor learning orbital and lathe welding.
• Perform pressure vessel stress calculations to ensure safety and compliance with ASME BPVC.
• Use SolidWorks to create 3D models, 2D drawings, and BOMs.
• Act as engineering liaison to manufacturing, assisting in troubleshooting to ensure on-time delivery.
• Participate in design reviews and change control to improve manufacturability.

Skills

Mechanical design

3D modelling

Welding design

Stress analysis

Cross-functional teamwork

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

CAD

PDM/PLM

Job description

The Role

Entegris is currently seeking a

Job Title:

Engineer II, Mechanical Engineering

Job Description:

The Role

Entegris is currently seeking a Mechanical Engineer II to join our Engineering team at our San Luis Obispo, California location.

The Mechanical Engineer II is responsiblefor the design, development, and continuous improvement of pressure vessels used in high-purity semiconductor purification systems. This role partners closely with R&D, Manufacturing, and Quality teams to develop new products, perform stress analysis, create detailed engineering documentation, support production troubleshooting, and ensure designs meet safety, performance, and industry compliance requirements. The position combines hands‑on manufacturing engagement with mechanical design expertise to deliver reliable, high‑quality products.

What You’ll Do

• Lead the mechanical design of Point of Use (POU) pressure vessels used for containing high-purity purification media.
• Partner closely with the Research & Development team to determine optimal media types, form factors, and geometric requirements for new purifier products.
• Evaluate and select appropriate filtration media to meet pressure drop, flow rate, and contamination control requirements.
• Design robust joints for pressure vessels, with a heavy emphasis on both welding specifications and bolted joint assemblies.
• Spend dedicated time on the manufacturing floor learning orbital and lathe welding.
• Conduct, analyze, and document pressure vessel stress calculations to ensure safety, reliability, and compliance with internal and external standards (e.g., ASME BPVC).
• Utilize SolidWorks to create 3D models, detailed 2D manufacturing drawings, and complete Bills of Materials (BOMs).
• Act as an engineering liaison to the manufacturing floor, assisting in the troubleshooting of production issues to ensure on‑time delivery.
• Participate in design reviews, process improvements, and change control processes to improve manufacturability and product performance.
• Create a healthy and safe work environment for all employees.
• Any other duties as assigned.

What We Seek

• Bachelor’s degree in Mechanical Engineering, Materials Engineering, or a closely related discipline.
• 2 to 4 years of professional engineering experience with a direct focus on pressure equipment or pressure vessel design.
• Demonstrated experience in 3D modeling and 2D drafting using SolidWorks or other CAD programs. (Experience with PDM/PLM systems is a plus).
• Deep understanding of mechanical assembly techniques, specifically structural welding design, weld callouts, and bolted joint engineering.
• Proven ability to perform manual and software-assisted stress calculations for pressurized equipment. Familiarity with ASME Section VIII or similar pressure vessel codes is highly preferred.
• Previous experience with filtration media, fluid dynamics, or high‑purity gas/liquid systems is a strong advantage.
• Hands‑on mindset with a track record of successfully troubleshooting mechanical manufacturing and production issues.
• Excellent verbal and written communication skills with the ability to work cross‑functionally with R&D, Quality, and Manufacturing teams.

Why Work at Entegris

• Lead. Inspire. Innovate. Define Your Future.
• Not everyone who works for a global company shares the same background,
• experiences and perspectives. We leverage the differences of our employees to
• bring new ideas to the table. Every employee throughout the company is
• encouraged to share input on projects and initiatives. Our decision‑making
• process is truly a collaborative effort as we realize there are leaders at every
• level of the organization. We put our values at the core of how we operate as an
• organization — not just when it’s convenient, but in a lasting and meaningful
• way. We want the time and energy you spend here to have a positive impact on
• your life inside and outside of the office.

What We Offer

Our total rewards package goes above and beyond just a paycheck. Whether you’re looking to build your career, improve your health, or protect your wealth, we offer generous benefits to help you achieve your goals.

• Generous 401(K) plan with an impressive employer match
• Compensation: $95,000-100,000 per year range with actual pay dependent on candidate overall skills for the role
• Excellent health, dental and vision insurance packages to fit your needs
• Flexible work schedule and 11 paid holidays a year
• Paid time off (PTO) policy that empowers you to take the time you need to recharge
• Education assistance to support your learning journey
• Values‑driven culture with colleagues that rally around People, Accountability, Creativity and Excellence

Entegris does not provide immigration‑related sponsorship for this role. Do not apply for this role if you will need Entegris immigration sponsorship (e.g., H1B, TN, STEM OPT, etc.) now or in the future.

At Entegris we are committed to providing equal opportunity to all employees and applicants. Our policy is to recruit, hire, train, and reward employees for their individual abilities, achievements, and experience without regard to race, color, religion, sexual orientation, age, national origin, disability, marital or military status.