In 1994, GAF's manufacturing plant in Shafter, California opened with a 19-year-old Ruben as an Operator on the original starting crew. While he only planned on staying for five years, Ruben remained on the Shafter team, holding various roles from Operator to Process End Leader to Shift Supervisor. He then took on more responsibility as Production Shift Lead for about five years. After his time on the line, Ruben then was granted an Electrical Apprenticeship, shifting the trajectory of his roles. He held positions as the Electrician Onsite, Electrical Team Lead, and Electrical Controls Specialist – a role he held for about seven years. He then was promoted to Senior Controls Specialist, until he most recently was selected as the Manager for GAF's new Incubation Center. In this role, he supports the hands-on installation, troubleshooting, and technology evaluation to accelerate innovation across GAF.