Engineer II, Mechanical Engineering

Job Title:

Job Description:

The Role

Entegris is currently seeking aMechanical Engineer II to join ourEngineering teamat our San Luis Obispo, California location.

TheMechanical Engineer II is responsible forthe 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 designexpertiseto deliver reliable, high-quality products.

WhatYou’llDo

• Lead the mechanical design of Point of Use (POU) pressure vessels used forcontaininghigh-purity purification media.

• Partner closely with the Research & Development team todetermineoptimalmedia types, form factors, and geometric requirements for new purifier products.

• Evaluate and selectappropriate filtrationmedia to meet pressuredrop, flowrate, 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,assistingin 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.

WhatWeSeek

• 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 aplus).

• 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.

• Previousexperience with filtration media, fluid dynamics, or high-purity gas/liquid systems is a strong advantage.

• Hands-on mindset witha track recordof 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. Weleveragethe differences of our employees to

• bringnew ideasto 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 weoperateas an

• organization - not just whenit’sconvenient, but in a lasting and meaningful

• way. We want the time and energy you spend here to have a positive impact on

• yourlife inside and outside of the office.

WhatWeOffer

Ourtotalrewardspackagegoesaboveandbeyondjustapaycheck.Whetheryou’relooking to build your career, improve your health, or protect your wealth, we offer generous benefits to help you achieve your goals.

• Generous401(K)planwithanimpressiveemployermatch

• Compensation: $95,000-100,000 per year range with actual pay dependent on candidate overall skills for the role

• Excellenthealth,dentalandvisioninsurancepackagestofityourneeds

• Flexibleworkscheduleand11paidholidaysayear

• Paidtimeoff(PTO)policythatempowersyoutotakethetimeyouneedtorecharge

• Educationassistancetosupportyourlearningjourney

• Values-drivenculturewithcolleaguesthatrallyaroundPeople,Accountability,CreativityandExcellence

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 toprovidingequal 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.