McMaster-Carr
McMaster-Carr is seeking a Senior Offensive Security Engineer to build and operate an independent security assurance capability within Internal Audit. This role focuses on evaluating cybersecurity controls through penetration testing, adversary emulation, and purple-team techniques to ensure they function as intended against realistic attack scenarios. The position involves translating technical findings into practical risk insights and remediation recommendations for executive management and the Audit Committee.
Headquarters
Elmhurst, Illinois, United States
Company Size
1001-5000 employees
Founded
1901
McMaster-Carr is an industrial supply company and one-stop source for maintenance, repair, and operations with a catalog of over 595,000 products. It serves engineers, maintenance teams, and manufacturers with fast fulfillment—98% of orders ship from stock and deliver same or next day. The company’s website and catalog provide detailed product specifications, drawings, and sourcing across hardware, fasteners, raw materials, power transmission, plumbing, and tooling. Customers rely on McMaster-Carr for its broad inventory, dependable next-day availability, and practical technical information.
Headquarters
San Francisco, CA
Company Size
201-500 employees
Founded
2018
Industry
Technology
Glassdoor Rating
4.2 / 5
Sarah Johnson
Chief Executive Officer
Michael Chen
Chief Technology Officer
Emily Williams
VP of Engineering
David Rodriguez
VP of Product
Jessica Thompson
Chief Financial Officer
Andrew Park
VP of Sales
View leadership team, funding history,
and employee contacts for McMaster-Carr.
53% above the average for this role
Daily McMaster-Carr serves up your daily slice of the yellow book
Sep 26, 2025