Skip to content

About Leadership

Jackson Pierce

Jackson Pierce

President

Jackson Pierce joined Caliber Security Partners in 2014 as an accountant and worked his way up to his current position as President. Jackson’s main goals at Caliber are to facilitate sustainable growth and provide optimal value to Caliber’s clients, vendors, employees, and shareholders. Jackson holds the core belief that through excellent service and by having the desire to help others be the best they can be, he will be at his best. Jackson learned to lead by example and is thrilled to continue promoting the Caliber culture of hard work, honesty, and dependability. Jackson is a graduate from Pacific Lutheran University in Tacoma, Washington with a Bachelors of Business Administration with a concentration in Accounting. Jackson enjoys spending his time with family exploring, playing and doing whatever it takes to get everyone laughing.

Tab Pierce
Tab Pierce

Founder and CEO

Tab Pierce founded Caliber Security Partners in 2010, with the belief that security needed to change from just a technical deliverable to an inclusive package with executive understanding and management of risk. Tab has gathered over 20 years of information security knowledge and is highly connected to industry experts throughout the United States. If you need to find someone in security, chances are Tab knows them or can quickly get an introduction. Tab has held executive positions within information security services providers, as well as companies within the broader IT sphere, and was a founder of The Zyon Group and co-founder of Mindpoint.net. Work and security are his primary passions; and if he’s taken a brief moment out of the office, he is likely on one of Washington’s breathtaking lakes, rivers, or in Puget Sound, because he’s an avid fisherman.

Jon Espenschied
Jon Espenschied

CISO and Director of GRC Practice

Jon Espenschied manages the Governance, Risk, and Compliance consulting practices for Caliber Security Partners, which include security policy and program implementation, enterprise risk management, privacy law compliance, threat modeling, incident management and breach response planning, and related services.  Jon brings over 25 years of security experience to Caliber Security Partners, from consulting with @Stake, Symantec, and Alert Logic, to holding key roles at Microsoft, United Nations agencies, and AT&T Wireless. Jon earned his BA from Occidental College and graduate certificates from UCLA, and holds professional certifications including CISM, CISA, CISSP, CGEIT, CRISC, CIPM, CIPP/G, NSA-IAM and UN-BSIF/ASIF.  When he finds free time, he enjoys a range of diversions that involve no software such as writing, travel, artistic blacksmithing, resuscitating dysfunctional motorcycles, and spoiling other people’s recipes with irreverence. Jon splits his time between both Washingtons.

Rex Warren

Director, Technical Services

Rex supports Caliber Security Partners as Director of Technical Services, overseeing all aspects of penetration testing, security architecture assessments, vulnerability detection and management. As a senior level engineer, Rex brings over 25 years of experience in security consulting and expertise having supported organizations as Coalfire Systems, Cisco, Neohapsis, and Leviathan Security Group. Rex earned his Bachelor of Science degree in Mechanical Engineering at Washington State University. In his spare time, Rex enjoys hiking, biking, motorcycling, and being on the water.

Jonathan Landis
Jonathan Landis

Practice Lead, Technical Security Services

Jonathan Landis supports Caliber Security Partners as a Practice Lead for the Technical Security Service area. Jonathan has accumulated over 10 years of experience in the computer security industry as a technical network consultant as well as a member of the security team at a major regional bank. At Caliber, Jonathan built a suite of web-based security applications, developed tools and processes for binary patching of mobile applications, and helps lead Caliber’s mobile and web application security team. Jonathan earned his Master’s degree in Mathematics, and in his spare time he enjoys playing video games with his son.

Contact Us