Skip to Content

Optima Steel International is open, with all Sales and Staff working a hybrid schedule. To get in touch with any OSI contact, please call their direct office line, as all lines continue to be forwarded. If you need assistance reaching any OSI contact, please call 925-338-2300.

Sales Team

Aroldo Hernandez

VP Sales – Western Region

D: 909-425-0305
C: 909-771-8369

Mr. Hernandez joined Optima (then Oxbow) in 2005 as a sales executive based in Southern California. Prior to joining, Aroldo spent 14 years with California Steel Industries where he held a number of sales, marketing, and customer service positions. Aroldo received a B.S. in Business Management from the University of Redlands.

Matt Nemec


C: 724-480-7356

Mr. Nemec joined Optima in September of 2013. Prior to joining, Matt spent two years in the banking industry where he held various sales and management roles. He is a 2011 graduate of Bethany College, where he graduated Magna Cum Laude with a B.A. in Political Science. He is a busy husband and father, but in his free time, Matt enjoys hunting, fishing, hiking, and officiating high school and youth baseball and basketball games.

Eric Rusnock


C: 724-601-9470

Mr. Rusnock joined Optima in April of 2015. Prior to joining, Eric spent three years in various sales and project engineering roles designing and manufacturing custom engineered systems. Eric was responsible for bidding, designing, and overseeing projects which would allow end customers to seamlessly retrofit new equipment into both existing and predesigned layouts and footprints. Eric is a graduate of Pennsylvania State University where he earned a B.S. in Mechanical Engineering.

Chad Black


D: 925-338-2318
C: 925-878-9485

Mr. Black joined Optima in March 2015, and is currently a Sales Representative with an emphasis in Western regional customers. Chad attended the University of San Diego and has B.S. degrees in Finance and Real Estate. Outside of Optima, Chad enjoys spending time with his family, staying active in his community, and continuing to play basketball in various recreational leagues.  

Eric Black

Sales Manager - Eastern Region

D: 713-485-4179
C: 925-457-3835

Mr. Black joined Optima Steel International, LLC in 2021. Prior to joining, he spent the previous 10 years in international steel trading with an emphasis in tubular products. Eric started his career working for a domestic steel mill. He received a B.S. in International Business & Philosophy from St. Mary’s College of California. Eric is a proud husband, and father of three.