About Paladin Security & Investigations

 William Santiago Jr, is the owner and founder of Paladin Security and Investigations Company, based in Chicago, IL. With over three decades of experience in military and civilian law enforcement, investigations, security and firearms training, he has built a career in protection of people and safeguarding assets.

Mr. Santiago began his professional journey by becoming a Private Investigator, then earning an Associate’s degree in Law Enforcement Studies follow by earning his Bachelor’s degree in Criminal Justice. His path took him through various roles in the U.S. Army and the Illinois Army National Guard, where he served in the Infantry, Recon/ Scout Sniper team, the Military Police Corps as a Military Police Officer and retired as an Ammunition Chief Warrant Officer 3 in March 2024, after 30 years of honorable service. Throughout his military service, Mr. Santiago mastered his skills in firearms, weapons, tactics, security, and munitions logistics as well as leadership skills, in tactical operations and missions, with five deployments overseas.

In 2010, Mr. Santiago, joined the Department of Homeland Security as a Physical Security Specialist, Law Enforcement Officer, (1801) where he performed various tasks in facility security assessments, safety and protection of Federal buildings, recommending security assets to enhance the security posture of federal buildings from undesirable events and for the safety of employees and visitors alike. Mr. Santiago also managed contract security officers throughout federal buildings.

In 2016, Mr. Santiago became a Special Agent (1811) with the Department of Homeland Security, performing criminal investigations and engaged in high-stakes security & investigation operations. This role allowed him to attain skills and experience in interviews of suspects, victims, witnesses, plan, organize, and administer oaths during affidavits, carry firearms; serve arrest warrants and make arrests when required, created threat assessments reports, conducted covert surveillance, and collaborative efforts in participating in information sharing, and build partnerships with other, State, Local and Federal Agencies as well as Private entities. Mr. Santiago is currently federally certified as a Firearms Instructor, Active Shooter Instructor, Use of Force Instructor, Evidence Technician, and in the Covert Security Testing program.

In April 2021, William took a bold step to create Paladin Security & Investigations, where he will oversee major operations and implement comprehensive security strategies tailored to meet the unique requirements of our clients. William prides himself on crafting emergency policies and procedures, conducting facility compliance inspections, and maintaining high standards of training for our personnel.

At Paladin, our mission is to prioritize your security with integrity and reliability. We understand that every client has distinct security needs, which is why we are committed to providing customized solutions designed to fit your specific situation.

With over eight years of experience in operations, facility management, staffing, and risk mitigation, Gianni Davila is a results-driven leader with a proven ability to optimize performance  and drive organizational success. Gianni has a strong track record of building efficient systems, managing complex logistics, and fostering high-performing teams to deliver exceptional results in dynamic environments. 

Gianni oversaw large-scale operations at high-traffic locations, including O’Hare and Midway Airports. Gianni successfully implemented safety protocols, managed staffing, and ensured compliance with regulatory standards, delivering seamless operations and outstanding customer service. In previous roles, Gianni spearheaded cost-saving initiatives, improved team productivity, and maintained 24/7  operational oversight in fast-paced and highly regulated industries.  

Now bringing Gianni’s expertise to the security industry, Gianni is focused on elevating operational efficiency, risk management, and client-centric solutions. Gianni’s ability to develop strategic plans,  optimize resources, and lead diverse teams makes them uniquely suited to tackle the challenges of modern security operations while maintaining the highest standards of service and reliability.  

As a forward-thinking Director of Operations, Gianni is committed to driving innovation and scalability in the security sector. Gianni’s proactive approach, combined with a dedication to excellence and customer satisfaction, positions them as a trusted leader ready to deliver tailored solutions that protect assets, enhance safety, and ensure peace of mind for clients.