About Us

DPS Software was founded by Mark and Charlotte Mills and is now owned and operated by Trinity & Mills Strategic Services LLC.

Our Philosophy

We are creating the new generation of Public Safety Software that will revolutionize the way that public safety officials conduct their day to day lives through brand new and easy to use technologies. DPS was created by a family owned business that values the safety of the community above all else and because of this, we are trying to make the world a safer place.

Our Team

Our team is made up of a dedicated group of people who bring a wide variety of experience to the development of public safety software.

James Mills


James Mills is the new Chief Executive Officer and Owner of Dynamic Public Safety (DPS), retired from the Tarrant County Sheriff’s Office after 27 years of distinguished service in a variety of roles including jail, patrol, narcotics/vice, judicial services, and the labor detail unit. Previously the Director of Operations for DPS, he has acquired the DPS division from the founder, Mark Mills in February 2019. Bringing over 15 years of management / leadership experience, thanks to his tenure at the Sheriff’s Office, James believes his knowledge of leading small, specialized units will assist him in this new endeavor. Holding a Bachelor of Science degree in Criminal Justice from Purdue University Global, where he graduated with honors, James maintains his Master Peace Officer, Master Jailer licenses, as well as his TCOLE Instructor license. He served for one year as a Sales Engineer for Dynamic Public Safety Software, interacting with potential customers, developing his product knowledge. James’ background of facilitating the Sheriff’s Office in the transition from handwritten documentation to software solutions, prepared him well for this profession. As the new owner of DPS, he is excited to drive the continued growth and successful of our software and our clients.

Trevor Johnson


Trevor Johnson is the Director of Sales & Operations at Dynamic Public Safety covering the U.S. Trevor brings over 10 years of Law Enforcement, Information Technology, Sales and Customer Service experience to our Dynamic Public Safety Team. Before joining DPS in 2015 he was the Lead Trainer, Installer and Technical Support Specialist for the Offender Data Information System (ODIS) project at the Oklahoma State Bureau of Investigation (OSBI). In his time with ODIS he saw over 200 Law Enforcement Agencies implementing this software across the state of Oklahoma. In bringing his vast experience and knowledge to our Dynamic Public Safety Team he will guide you through the process of implementing DPS software into your Facility.

Marcus Walker

Trainer/Subject Matter Expert

Marc brings over 21 years of experience in the Law Enforcement community and 18 years of Information Technology knowledge to Dynamic Public Safety. Marc combines nearly 5 years as a United States Air Force Law Enforcement specialist and a military working dog handler along with 18 years of Information Technology experience as the lead trainer and project coordinator for jail management and reports management systems in Texas and Oklahoma. Along with Dynamic Public Safety Marc also worked for 12 years with the Oklahoma state-wide Offender Data Information System (Oklahoma Criminal Justice Resource Center and the Oklahoma State Bureau of Investigation) where he was personally responsible for the coordination, setup and training of over 150 agencies.

Khatai Mammadov


Khatai Mammadov is a Back-End Developer at Dynamic Public Safety Software. He holds an M.S. degree in Computer Science from Sam Houston State University. Being a computer science enthusiast with a passion to make life easier for others, throughout my career, he has designed and developed applications for various purposes by deploying computational science. Here at DPS, our team is pursuing perfection, our goal is to constantly improve performance and security of our application, make it user friendly, easy to use and meet all the requirements of law enforcement organizations.

Carrie Hardee

Marketing Specialist

Carrie Hardee is our Marketing Specialist. Her background is in Graphic Design and she has an Associates of Arts Degree. She specializes in creating marketing materials and reaching our target audience with eye catching graphics. She loves to challenge herself and learn new and innovative ways to solve problems. She’s also dedicated to keeping up on current trends in the design world. She loves to spend time with her family and pets and in her spare time she loves to draw and paint as well as participate in local art shows.