Meet the Sheldon Manufacturing Team


Sheldon Manufacturing attracts the greatest innovators in the business. We encourage a mixture of challenging projects and a healthy work-life balance.

For current openings at Sheldon Manufacturing, please visit Join Our Team.


Dan Sheldon

Dan Sheldon is the Sheldon Manufacturing President and CEO. Dan enjoys working with his team and coming up with new products and solutions. An avid road and mountain bike rider, Dan also enjoys wake surfing and snowboarding with family.

Vesa Vihavainen

Vesa Vihavainen is the Chief Operating Officer at Sheldon Manufacturing, Inc. Vesa enables growth of Sheldon Manufacturing by overseeing sales, customer support, procurement, manufacturing, marketing, finance, and administration. He has years of international experience in the medical device and healthcare industry and has been with Sheldon Manufacturing since 2015. He is interested in world economics, corporate strategy, and music.




Mark Bernard

Mark Bernard is the Corporate Sales Director at Sheldon Manufacturing. Mark has had a successful career in the life science, educational, industrial, pharmaceutical, government and healthcare markets for over twenty-five years. His experience includes management and sales roles with VWR International, General Electric Healthcare, and Thermo Fisher Scientific. He enjoys outdoor activities and traveling with his family.

Jeffrey Johnston

Jeffrey Johnston handles Sheldon Manufacturing’s sales outside North America and for the Southeastern United States. He has over 35 years of medical and laboratory industry experience. Before joining Sheldon Manufacturing, Jeffrey held senior executive level positions with major U.S. lab equipment manufacturers. He has served as the chair of the international committee of industry trade groups and is active in local export and international trade groups.

Jeremy McDonald

Jeremy McDonald is the Sales Manager for Custom Solutions at Sheldon Manufacturing. Jeremy transforms process challenges into application solutions. He has thirteen years of experience in anaerobic microbiology and eighteen years of experience in anaerobic and vacuum chambers. Jeremy enjoys a good joke and spending time with loved ones.

Dan Higgins

Dan Higgins is a Sales Manager at Sheldon Manufacturing for customers located in Oregon, California, Washington, Alaska, Hawaii, and all of Canada. Dan has been in the industry, and with Sheldon Manufacturing, for over twenty-eight years. He has worked in many capacities at Sheldon Manufacturing in that timeframe and been in the sales side of the business for approximately nine years. Before coming to Sheldon Manufacturing, Dan spent eight years in the financial services sector in a consultative and selling role.



Inside Sales

Ana Calixto

Ana Calixto is the Inside Sales Representative for Sheldon Manufacturing. Ana has been with Sheldon Manufacturing for roughly two years now and is always willing to learn and achieve new things. Her hobbies include hiking, going to the gym, and Zumba. Ana loves spending time with family and her dog Hercules and is a makeup and fashion enthusiast.

Alex Cranson

Alexander Cranson is a technical sales associate for Sheldon Manufacturing and secretary of the Sheldon Safety Committee. Alexander is in his third year at Sheldon Manufacturing following ten years of work in scientific laboratories. With so much experience in the fields of biology and applied biochemistry, Alexander loves to cook all kinds of foods and views his kitchen as a personal food laboratory.

Tabetha Martorano

Tabetha Martorano is the International Sales Coordinator at Sheldon Manufacturing. Tabetha’s key responsibilities include sales, order entry, and logistics in our international regions. Tabetha has held this position with Sheldon Manufacturing since 2004. Her favorite hobbies include traveling, reading and spending time with her family.






Katrina Thorsen

Katrina Thorsen is the Marketing Coordinator for Sheldon Manufacturing. Experienced in departments ranging from traditional marketing to gamification, Katrina has been in marketing for over three years and at Sheldon Manufacturing for over one year. She enjoys hiking with her dog and watching many movies.




Customer Service and Support

Michelle Gilbertson

Michelle Gilbertson is the Aftersales Manager for Sheldon Manufacturing. Michelle has been with the company for almost 2 years. Michelle brings over 23 years of Managerial and Customer Service Experience. Before joining Sheldon Manufacturing, Michelle had a successful career in the Financial Industry. Her hobbies include hiking, boating, and Kayaking. She also enjoys family, friends and has a love for animals.

Ron Wilson

Ron Wilson is the Technical Support Manager for Sheldon Manufacturing. Ron has worked in customer service, support, and training in the software and manufacturing industry for more than twenty years. His hobbies include reading history and short stories, cooking, and binge-watching TV series.

Jon Gigstad

Jon Gigstad is a Senior Technical Support Representative for Sheldon Manufacturing products. Jon has worked in field service and phone technical support for thirty years and has specialized in constant control devices for about three years. His favorite hobbies include programming, tinkering with hardware, and building pretty much anything. Jon also enjoys comedy, singing, and dancing.




Custom Solutions Engineering 

Dan Mallery

Dan Mallery is the Custom Solutions Sales Engineer for Sheldon Manufacturing’s Cascade TEK Division. Dan is the customer-facing sales and application engineer for custom automated high vacuum chambers. He is responsible for quoting and designing custom systems to meet customer expectations. He also handles customer training in the field and onsite. Dan has twenty-three years of experience in design, building, installing and service of semiconductor, industrial and laboratory capital equipment. A US Navy submarine veteran, Dan has a bachelor’s degree in nuclear engineering.




Ed Burress

As Sheldon Manufacturing’s Director of Engineering, Ed Burress leads a team of engineers to create the next generation of quality-driven instruments. Ed has 40 years of experience in the high-tech industry and has been awarded 33 patents to date. A passionate engineer, he loves all aspects of the job and is particularly interested in innovation and invention; particularly when shared with a truly gifted team.




Bob Martin

Bob Martin is the Quality Engineer for Sheldon Manufacturing. Bob has held positions in quality and manufacturing for over twenty years, working on defense, space, medical, and commercial products. His personal activities include motorcycling, horseback riding, bicycling, and kayaking.





Kevin Cowan

Kevin Cowan is the Production Manager at Sheldon Manufacturing. He schedules workflow for all departments in manufacturing to ensure new and existing products go out on time. Kevin started at Sheldon Manufacturing in 1982 and initially worked in assembly before moving into his current position in 1989. He enjoys bicycling and rides 25 miles, round trip, to work each day.




Robert Sheldon

Robert Sheldon is the Procurement Manager for Sheldon Manufacturing. Robert has been with the company for forty years and overseen Procurement for twenty-five years. His favorite hobbies include playing basketball and reading a good book.

Paul Philley

Paul Philley is Purchasing for Cascade Tek, Custom Solutions Team and Contract Engineering at Sheldon Manufacturing. Paul enjoys the process of innovation and entrepreneurship as well as taking classes and learning new things. He enjoys developing new supplier relations and working with the supplier as part of the team. Hobbies include taking classes and learning new things in anything entrepreneurial related, supply chain management, economics, and marketing. He also enjoys hiking and photography.






Laura Garfias

Laura Garfias is Accounts Receivable at Sheldon Manufacturing. Laura has been with Sheldon Manufacturing for three years. Her favorite hobbies include going to the gym, exploring new places, and spending quality time with family and friends.

Locate a Sales Rep Get a Quotation
Shel Lab Bactron Lab Armor Cascade TEK Visu HighPoint
Sheldon Manufacturing Inc

300 N. 26th Avenue • PO Box 627
Cornelius, OR 97113 USA
1 (888) 227-1410 •

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