Our Team

The People Matter the Most

Meet the leadership team!

Apeks Supercritical was founded in 2001 by Andy Joseph, a US Navy veteran. The company grew from a team of one to 46 employees in 2019, when it was purchased by The Gibraltar Industries. 

General Manager

Rodolfo Martinez

Rodolfo joined the team in February 2020. He has more than 25 years of global executive experience in general management, sales and operations at industrial companies focusing in the building materials, industrial composites, and polymers vertical markets, both in a private equity and corporate environment serving in leadership roles such as CEO of pe-backed portfolio companies, General Manager, Vice-president of Sales & Marketing and Director of Sales at publicly traded industrial corporations.

Rodolfo earned his bachelor’s degree in Chemical Engineering from Monterrey Tech and his MBA from the Kellogg School of Management at Northwestern University in Evanston IL.

In his spare time, Rodolfo volunteers as a Business Mentor with SCORE, a resource partner of the U.S. Small Business Administration (SBA) and as an active member of the Northwestern University – Kellogg MBA Alumni Admissions Committee. Rodolfo and family enjoy participating in school activities, traveling, and going to the movies.

Director of Engineering

Jeremy Sexton

Jeremy has been with the company full time since 2013, serving as a controls engineer before being promoted to Director of Engineering of Apeks Supercritical in 2015. Since then, he’s been involved in innovation activities leading to a patent issued in 2020 and additional innovation activities with patents pending.  Jeremy accepted the role of Director of Engineering with Processing Solutions by Gibraltar in June of 2020. 


Along with much experience in industrial automation, maintenance, installation and repair, Jeremy has broad-based manufacturing experience — everything from GMP (Good Manufacturing Process) work in an FDA-regulated facility to melt shop and substation electrical work in a steel mill. He has served in engineering roles for Honda of America, EWI (manufacturing technologies) and Scotts Miracle-Gro Company. 

Jeremy earned an associate degree in Electromechanical Engineering from Columbus State Community College.  

Jeremy is married to Susan since 1992 and has two adult children. His hobbies include ice hockey, fun activities revolving around cars, creating culinary treats with his smoker, and collecting different styles of whiskey. 

Director of Sales

Dave LaRussa

Dave LaRussa joined the team in May 2018. He has had over 20 years’ experience in sales, most recently with the Formica Group. Dave has directed sales teams at national and global levels and is skilled at developing methods to solve problems and improve efficiencies. He directs the sales and marketing team to streamline and implement processes to continually improve the customer experience. 

Dave is a retired combat veteran, having served 28 years in the US Army and National Guard. He completed a tour of Duty in Iraq and during his career he was awarded several commendations, which includes the Bronze Star. He earned his B.A. in Business Management from Capital University in Columbus, OH. 

Dave has two children, Zachary who is attending graduate school at Ohio university and Abigail who is studying Architectural design at Kent state. Dave spends his time being active by cycling, mountain bikingskiing, running and working out. He also spends time escaping to his cabin in southern Ohio. 

Director of Customer Service

Jeremie Schildt

Jeremie Schildt joined the team in June of 2019. He brings 23 years of global sales and customer service experience to the group.  

Prior to Delta, Schildt worked at solar microinverter pioneer Enphase Energy (ENPH), overseeing all global Customer Service programs and teams. Schildt started at Enphase Customer Service in 2009, growing with the company from its first 6,000 units installed to over 20M in the field. Schildt and his team were responsible for field quality, system troubleshooting, call center operations, top-level escalations and sustaining initiatives for all of Enphase’s installed products globally.  

Prior to Enphase, Schildt was an Automotive Special Projects Manager for World Products, the sales and marketing company for all NEC relays in the Americas. During his 13 years at World Products, he was responsible for sales to multi-million-dollar automotive companies across the globe, representing $6M in annual company sales.  

Schildt holds two degrees in Electronics and English. In his off time, he enjoys restoring and racing classic cars and spending time with his kick-ass family. 

Gero and Nela

Office Dogs Extraordinaire

Gero (gear-ro) and Nela (neh-la) are Apeks Supercritical’s canine companions and official greeters. They spend their time alternatively playing and hunting snacks. Both are highly trained, well behaved, incredibly responsive German Shepherds. Except for that one time (@8:37 in the video below)…

Apeks Supercritical is veteran operated.

Veteran operated

We are proud to have a number of veterans on staff, including Andy Joseph, company founder.


Andy Joseph

The President of Apeks Supercritical, Andy Joseph, is a 2 time Navy Achievement Medal recipient and served aboard the USS San Francisco (SSN-711) home ported out of Pearl Harbor Hawaii as an enlisted nuclear propulsion mechanic. While on board, he learned principles of mechanical operation for all of the nuclear and support plant systems, machining, welding, and of course, discipline. No one makes it through the Nuclear Navy without understanding two words – integrity and discipline. Those words demonstrate how the US Navy has never had a reactor accident in the 60 years that nuclear reactors have been on ships and submarines.

This experience continues to be the foundation for all of the systems we build.


Ben Rader

Our Assembly Technician, Ben Rader, is a submarine veteran who served aboard the USS Boise (SSN-764) stationed in Norfolk, VA.


Dave LaRussa

Dave served in the army for 28 years, on active duty and in the National Guard. He finished his army career in the Army Reserve.

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