Management Team
MARK S. WOOD
Chairman
The son of MJW founder Milton J. Wood, Mark began his career with the company at age 12 by sweeping out the warehouse when he wasn’t in school. He became a full-time employee in 1977 and was elected president in 1982. With a Bachelor of Science degree and an MBA from Florida State University, Mark was responsible for establishing the employee stock ownership plan (ESOP) in 2001 that has resulted in the proud employee-owned company we are today.
During his career, Mark has led many industry associations and nonprofit groups. In the community, he has served as chairman and trustee of the Jacksonville Public Library and as president of the Northeast Florida Safety Council. He also has been a director for Episcopal Children Services and Boys and Girls Hope of Jacksonville. In the industry, he has served as president of the Northeast Florida Associated General Contractors and Florida State Council Associated General Contractors; as chairman of the Southeastern Ironworkers Health and Welfare Fund; and as a director of the First Coast Manufacturers Association.
ZARKO OGNJENOVIC, PE
Chief Executive Officer
Zarko joined MJW in 1995 as a lead fire protection design engineer. Since that time, he has contributed to a wide range of government and private sector projects throughout the United States and internationally, progressing through positions in system design, estimating, project management and various operational and executive roles in the company. Zarko is currently serving on the Board of Directors for the National Fire Sprinkler Association, is past-president of the Florida Fire Sprinkler Association and is past-president of the Northeast Florida Chapter of the Society of Fire Protection Engineers. Zarko earned a Bachelor of Science degree in Mechanical Engineering from the University of Zagreb, Croatia, and holds certifications from the National Institute for Certification in Engineering Technologies (NICET) for Level IV Automatic Sprinkler Systems Layout, Level IV Special Hazards Suppression Systems, and Level II Fire Alarm Systems. He is a licensed Fire Protection Engineer in multiple states in the US. His passion for lifelong learning includes, among other things, executive education programs from the Wharton School at the University of Pennsylvania and the Darden School of Business at the University of Virginia
ANNMARIE M. NEMETH
Chief Financial Officer
Annmarie joined MJW in 2002 after working on the audit team for the company’s outside auditor for five years. She is a member of the American Institute of Certified Public Accountants, Florida Institute of Certified Public Accountants, and the Construction Financial Management Association. Annmarie served as a trustee for the Florida United Brotherhood of Carpenters Pension and Health and Welfare Fund, and from 2007 to 2010 was the Finance Committee chair for the First Coast Manufacturers Association. She served as the Finance Committee chair for the Guardian ad Litem Foundation from 2013 to 2018. She is a graduate of the University of Florida, where she earned a Bachelor of Science degree in Business Administration-Finance, and of Florida Atlantic University, where she received a Bachelor of Science in Accounting. Annmarie is a Florida-licensed Certified Public Accountant.
DOUG WALKENHORST
Director of Area Operations
Doug brings nearly 30 years of experience in the specialty construction industry, with a career encompassing contracts and procurement leadership, complex mechanical project delivery, ISO certifications and client-specific quality assurance programs, and regional operations management. Doug has led mission-critical work in highly regulated environments, with experience spanning from high-purity piping systems supporting healthcare and pharmaceutical facilities to vacuum-jacketed cryogenic piping for aerospace integration and launch facilities. He has successfully overseen projects ranging from short-duration outage work to large-scale, technically demanding construction programs, bringing a disciplined, owner-focused approach that emphasizes safety, quality, schedule certainty, and accountability.
STEVEN RANEY
Director of Area Operations
Steven brings more than 30 years of experience in the fire protection industry. He began his career following his enlistment in the U.S. Air Force and after earning his degree from Jacksonville State University. Over the course of his career, he has progressed through roles of increasing responsibility, developing a deep, end-to-end understanding of fire protection operations—from estimating and project development through field execution and regional leadership. He has extensive experience supporting complex and mission-critical facilities, including industrial and oil & gas operations, healthcare campuses, government installations, and spacecraft processing and launch facilities. In his role as Director of Area Operations, Steven provides leadership focused on operational excellence, workforce development, client coordination, and the consistent delivery of safe, compliant, and high-quality fire protection solutions.
Steven is licensed in most Southeastern states, is an NFPA-certified Fire Protection Specialist (CFPS), holds multiple NICET certifications, and remains actively engaged in industry and affiliate organizations.
