GREG HEILAND – FOUNDER AND CEO

Greg Heiland, a recognized leader in contamination control, has dedicated himself to promoting critical environment excellence for over 30 years. After graduating from Santa Clara University in 1982, Greg launched a 6-year career with American Scientific Products in sales and management roles. In 1988, Greg and his wife, Mary, founded Sierra Scientific, an Arizona based distributor of cleanroom products. They acquired the Texas-based supplier, Class 10, and started Valutek, a controlled environment consumables manufacturer in 2000. 

Known as an industry expert, Greg is a frequent contributor to contamination control publications, trade shows, and the development of cleanroom standards. For his long-term commitment to IEST, he was awarded the 2018 Robert L Mielke award. When not promoting the protection of product, people and practices, Greg enjoys travel, the outdoors and spending time with his family.

MARY HEILAND – CO-FOUNDER AND VP OF HUMAN RESOURCES

A native Californian, Mary graduated from the University of Southern California with a Bachelor of Science degree in Occupational Therapy. She began her career in neuro rehab at St. Jude Hospital in Fullerton, CA. She then worked as a pediatric OT for California Children Services in Orange County, CA and Howard County Schools in Maryland. In 1988, Mary co-founded Sierra Scientific with her husband, Greg, and subsequently Valutek in 2000.

As our internal and external “goodwill ambassador”, Mary’s role as culture advocate, team builder, talent recruiter and celebrator is the heart of Valutek. Whether planning monthly themed “team appreciation” luncheons or celebrating any and all milestones, Mary’s legacy is her genuine care for the well-being of the team and the business. In her leisure time Mary enjoys cooking, crafting, volunteering, travel and keeping connected with four grown children and their exciting lives.

KOREY FLECK – VICE PRESIDENT OF SALES & MARKETING

As the VP of Sales and Marketing, Korey made an immediate impact for Valutek's business model. He has nearly two decades of territory management and sales experience in the healthcare, academic, and biotechnology industries and is known for excellent customer service. Korey's people skills are unmatched and his leadership has brought Valutek to new levels. He and his family reside in sunny California, but he commutes to the Phoenix headquarters frequently.

Reach Korey directly at kfleck@valutek.com or 805.372.0900. 

TAMMY FEATHERSTON - SALES OPERATIONS SPECIALIST

Since 2013, Tammy has been the face of Valutek. She delivers the ultimate customer experience by making it pleasant and hassle-free. She also inputs orders, handles online chat, resolves issues and tracks shipments. Tammy makes sure our customers get the right product, in the right quantity, at the right price, and on time. In her leisure time, Tammy enjoys riding motorcycles with her husband and spending time with family.

Reach Tammy directly at tfeatherston@valutek.com or 602.761.2302

YUNUS AKCALI - MARKETING MANAGER

 Yunus is originally from Turkey and joined the Valutek Team in 2021. As the Marketing Manager his internal role will be providing best in class marketing collateral and to build Valutek’s marketing team. Yunus will receive his latest graduate degree this fall from the Pennsylvania State University. His concentrations are marketing, business & data analytics. Yunus’s enthusiasm is for travelling and history led him to travel different parts of the world. His extended journeys allowed him to explore the old world’s ancient civilizations and cultures. He lives in Gilbert, AZ with his family. In his spare time, Yunus enjoys outdoor activities, spending time family and friends.   

Reach Yunus directly at yakcali@valutek.com or 602.761.2240. 


        LESLIE OSMERA - REGIONAL SALES MANAGER, SOUTHEAST REGION

 Leslie brings over 30 years of controlled environment experience in pharmaceutical (biologics, vaccines and chemical derivatives; oral and solid dosage, nutraceuticals, cosmeceuticals), medical device (i.e., Quality Systems and Design controls, 501k products, blood screening, combo products, clinical diagnostics, wound healing) and nutraceuticals, working within small and start-up companies to large corporate entities framework. Her product experience includes aseptic/sterile fill finish, large scale fermentation, API, new facility start-up and renovation; Production controls and process documentation development, Class III medical device facility build-out. She also has provided technical support to industry relating to contamination control, disinfection and environmental monitoring. In her spare time she enjoys sailing and showing champion Longhorn cattle.

Reach Leslie directly at losmera@valutek.com or 737.900.1990

SUSAN FITCH - SALES SUPPORT

Susan joined Valutek in 2020 as a Sales Support Representative. A graduate of ASU, she has held multiple positions in customer relations throughout the years and brings a wealth of knowledge and experience to the team. In her free time, Susan enjoys shopping, making jewelry and watching movies. 

Reach Susan directly at sfitch@valutek.com or 602.761.2241. 

MELISSA MILLAN - SALES SUPPORT

Melissa joined Valutek in August of 2021 as our Bilingual Sales Support Representative.  

Reach Melissa directly at mmillan@valutek.com or 602.761.2232. 

JOHN HEILAND – OPERATIONS DIRECTOR

John has officially been part of the Valutek staff since the beginning of 2019, but unofficially part of the family business since he could walk, talk, and move boxes in the warehouse. He now oversees the Valutek Operations department. When not at work/reining in his dad’s next business idea, John and his wife Samantha (and dogs Panda and Nacho) spend their free time boating at a local lake, camping up north, or road tripping somewhere new. 

Reach John directly at jheiland@valutek.com.

JOSE HERNANDEZ – WAREHOUSE COORDINATOR

Originally from Colorado, Jose has been the warehouse coordinator at Valutek for years. A seasoned and dedicated employee, Jose is the core of order fulfillment at Valutek as he does inventory receiving, order picking, and stock rotation. He also monitors all the raw material components required for the manufacturing. Jose and his family reside in the East Valley of Arizona. 

Reach Jose directly at jhernandez@valutek.com.

IAN SUTTON – ON-SITE COORDINATOR 


MICHAEL REDEAGLE – WAREHOUSE TECHNICIAN

Michael began in the Valutek warehouse in 2020 and proved to be a hard-worker and willing to tackle any project. He specializes in clean room production and inventory management. 

DHRUVIKA GARG – SUPPLY CHAIN OPERATIONS SPECIALIST

 Dhruvika is a recent graduate from ASU. She is originally from India. She will be working on supply chain operations at Valutek. She is really passionate about networking and enjoys painting and photography in her free time.  

Reach Dhruvika directly at dgarg@valutek.com or 602.761.2254

TERRANCE D'ANGELUS –  ASIA OPERATIONS DIRECTOR

With decades of experience at Valutek, TJ is an expert of high-tech manufacturing consumables. He's the director of all operations in Asia and a core component of Valutek's supply chain. TJ's wealth of knowledge is immesurable and his positive attitude is contagious. 

Reach TJ directly at tdangelus@valutek.com

VIJENDRAAN VENKITASALAM – QUALITY MANAGER

Based in the Malaysia office, VJ is a high-tech manufacturing consumable expert. He's been with Valutek for more than a decade and has held roles of increasing importance throughout the years. VJ has an extensive education in electric and electronic engineering and enjoys traveling and playing sports in his free time.

Reach VJ directly at vijen@valutek.com.

SUNNY WU - QUALITY ASSURANCE ENGINEER

Sunny plays a crucial role in the Asia market as she leads on-site inspections for all apparel products manufactured in China. She excels at both improving product quality and reducing quality issues while also maintaining superior communication with multiple suppliers. Sunny enjoys playing badminton and rope in her leisure time. 

Reach Sunny directly at swu@valutek.com.

NICHOLAS KADLEC - SENIOR CONTROLLER 


Reach Nicholas directly at nkadlec@valutek.com or 602.761.2310

SHARON LOOI – STAFF ACCOUNTANT

Based in Malaysia, Sharon has been invaluable to the Valutek team for over a decade. She handles the majority of financial matters in Asia, especially accounts payable and receivable. Sharon specializes in sending friendly reminders to clients and always ensures prompt payments. Outside of the office, her favorite pastime is to go sightseeing with family members. 

Reach Sharon directly at slooi@valutek.com

RENUGAA KRISHNAN - ADMINISTRATIVE ASSISTANT

Renugaa joined Valutek with experience in computer systems administration. Originally from Penang, she helps the Asia office run smoothly and enjoys listening to music during her free time.  

Reach Renugaa directly at rkrishnan@valutek.com