10 Entegris engineering leaders
Vice President, Engineering, Research & Development, and Labs, Advanced Purity Solutions, Director of Engineering and Global Director, New Product Introduction are among the roles held by these ten Entegris engineering leaders, some of whom have since moved on. A reader can learn how engineering leaders work at Entegris from people who have held the role.
Professionals to explore
David Medeiros
LinkedInExperience: Vice President, Engineering, Research & Development, and Labs, Advanced Purity Solutions · Entegris
David Medeiros has been Vice President, Engineering, Research & Development, and Labs, Advanced Purity Solutions at Entegris since January 2025, based in Billerica, Massachusetts, and was Senior Director, Engineering there from 2021 to 2025. David Medeiros was Vice President, Global Engineering at GlobalFoundries from 2019 to 2021 and teaches engineering leadership part time at Tufts.
Hsin-Hao Yeh
LinkedInExperience: Director of Engineering · Entegris
Hsin-Hao Yeh has been Director of Engineering at Entegris since January 2025, based in Taiwan. Hsin-Hao Yeh was Senior process manager of Deposition & Clean at Lam Research from 2020 to 2025, Module Technical Leader (MTL) at Intel from 2018 to 2020 and Principal Engineer at TSMC from 2007 to 2018.
Huaping Wang
LinkedInExperience: Director of Engineering · Entegris
Huaping Wang has been Director of Engineering at Entegris since October 2025, based in Eden Prairie, Minnesota, and was Sr. Engineering Manager there from 2014 to 2025. Huaping Wang was Manager, Technology Characterization at Entegris from 2002 to 2014, and the profile lists new product development and engineering management among specialties.
Jared Moody
LinkedInExperience: Director of Engineering · Entegris
Jared Moody has been Director of Engineering at Entegris since January 2025, based in the Minneapolis-St. Paul area, and was Senior Engineering Manager there from 2022 to 2025. Jared Moody was R&D Engineering Manager at Donaldson from 2020 to 2022, and the profile cites a background in chemical engineering, materials science and analytical chemistry.
Jeff Upton
LinkedInExperience: Global Director, New Product Introduction · Entegris
Jeff Upton has been Global Director, New Product Introduction at Entegris since April 2024, based in Bedford, New Hampshire, and also lists Director, New Product Development Engineering there as a current role from June 2022. Jeff Upton held engineering manager and manufacturing engineer roles at Entegris from 2013 to 2022.
Mario Stella
LinkedInExperience: Sr. Director - Global Fab Technology & Field Service Engineering · Entegris
Mario Stella has been Sr. Director - Global Fab Technology & Field Service Engineering at Entegris since January 2025, based in Aurora, Illinois, and was Fab Technology Director, North America & Europe there in 2024. Mario Stella was Sr. Manager Customer Technology Engineering at Entegris from 2022 to 2023 and held customer technology engineering roles there from 2019.
MaryTheresa M. Pendergast
LinkedInExperience: Director, Engineering · Entegris
MaryTheresa M. Pendergast was Director, Engineering at Entegris from August 2019 to October 2022, establishing and leading a large global organization, per the profile. MaryTheresa M. Pendergast was Senior Manager, New Product Development at Entegris from 2018 to 2019 and Director, Research & Development at Oasys Water from 2015 to 2018.
Matt Fuller
LinkedInExperience: Director of Engineering · Entegris
Matt Fuller has been Director of Engineering at Entegris since May 2024, based in the Colorado Springs area, and the profile headline places the role in Microenvironments. Matt Fuller was Senior Engineering Manager at Entegris from 2017 to 2024, and the profile cites experience designing microenvironments for the semiconductor industry and involvement in SEMI standards.
Siddarth Sampath
LinkedInExperience: Director of Applications Engineering · Entegris
Siddarth Sampath has been Director of Applications Engineering at Entegris since January 2026 and was Sr. Applications Manager there from 2023 to 2026. Siddarth Sampath held applications engineering roles at Entegris from 2018, and the profile headline describes technical expertise in liquid filtration and microcontamination control for the semiconductor industry.
Steven Chung
LinkedInExperience: Director, Fab technology and engineering · Entegris
Steven Chung has been Director, Fab technology and engineering at Entegris since May 2025, based in Hsinchu City, Taiwan, and the profile says the role leads Taiwan, Japan, China and Singapore. Steven Chung was Sr. Manager, Fab technology and engineering at Entegris from 2022 to 2025 and Business Engineering Manager at Cabot Microelectronics from 2015 to 2017.
Choose the right perspective
Match the person's area, such as product development, applications engineering, new product introduction or fab technology support, to the decision you face. Pick someone whose product line or region is closest to your question.
Questions to take into the conversation
- 01What did you change first when you took on your engineering leadership role, and why?
- 02How do you balance customer fab requests against your own product development roadmap?
- 03What has your own work taught you about moving a new materials product from development into volume production?
Reaching Entegris engineering leaders
How can I contact one of these Entegris engineering leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: Entegris, based on profile data retrieved on October 23, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach Entegris engineering leaders?
You choose the offer, starting at $5 per person. The offer is what the person receives, and Instant Expert's fee is added on top, so a $100 offer costs you $125. The fee is 20% of what you pay. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
Can an AI agent ask one of these Entegris engineering leaders a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
Request a correction or removal