Meet Our Team

Kirby has over 20 years of operations management experience, with more than half of that time spent at Marksman Security, where he serves as liaison to a portfolio of exceptional clients. He provides leadership and guidance to equip all of the Site Supervisors and Security Officers in his division with the necessary tools for success. Kirby’s objective is to build long-lasting employee and client relationships.

Derek has over 25 years of experience in the private security industry.  He started his career with Marksman Security in 2020 as an Account Manager before moving into the Marksman Corporate office as a Field Service Manager supporting all aspects of the operation.  Prior to moving into operations, Derek worked as a Business Development Manager for over 20 years for two of the largest security corporations in the world.

Derek’s primary objectives are to maintain Marksman Security’s current position as the provider of choice and the employer of choice in the Austin market.  He will accomplish this by building strong client relationships and developing and growing the company’s pool of talented employees to become future leaders.

Mark comes to Marksman Security with an impressive 13-year career in the U.S. Army, including four years as a military officer. Mark’s experience includes administrative operations, intelligence analysis, leadership, and goal setting. Mark’s ability to problem solve and produce creative and productive solutions to employee issues has made him an invaluable asset.

Shawn brings with her over 40 years of Human Resources experience in multiple industries including hospitality, communications and retail. Having been responsible for multiple sites across the United States as a Regional / VP, she understands the critical importance of creating and maintaining a strong and vibrant company culture for employees; one which values the contributions of each individual for our long-term success. Shawn is a proud graduate of Southern Methodist University achieving Cum Laude with Departmental Distinction with a B.S. degree in Psychology.

Sylvia has over 20 years of Human Resources experience with a strong focus in recruiting. As the Senior Staffing Manager, Sylvia takes the lead role in the hiring process. With a positive attitude that keeps people engaged, Sylvia excels at guiding candidates through the interview process and understands the importance of placing candidates where they are valued, supported by their teams, and meet the needs of each individual client.

Stefanie, having previously worked with high profile clients in the luxury transportation industry in both Human Resources and Business Administration roles, understands the importance of ensuring employees represent the mission, vision and values of the company with integrity and excellence. Stefanie uses her passion for supporting employees to ensure that training is a positive experience along with managing company recognition programs and communications.

Darrell has over 25 years of experience in all aspects of business operations and administration. Previously the Managing Director of his own HR Consulting and Recruiting Firm, his professionalism and experience working with high profile clients allows him to do what he does best, which is take care of his clients and his employees in an exceptional manner while constantly striving for incredible business outcomes through efficiency and teamwork.

By utilizing his previous experience as a Security Officer with Marksman Security, Jayce ensures an efficient recruiting experience for potential candidates by guiding them through the hiring and licensing process. After onboarding, Jayce assists employees in enrolling in company benefits and verifies the company is compliant in all aspects of record keeping. With an additional background in technology and broadcast media, Jayce hopes to bring a unique perspective to the present and future of Marksman Security.