Nicholas Dimos was named assistant director of the FBI's Finance and Facilities Division in January 2022. Mr. Dimos had most recently served as the deputy assistant director of the division.

Mr. Dimos joined the FBI in 2006 as a budget analyst in the Finance Division. In 2009, Mr. Dimos was promoted to a team leader in the Budget Formulation and Presentation Unit, where he oversaw budget development across several areas.

In 2012, he served as an acting supervisor and transition leader during the establishment of a new procurement unit that focused on strategic sourcing, complex contracting, and workforce development. In 2013, he transferred to the development team of the Bureau’s new financial system, which Mr. Dimos helped implement across the entire FBI.

Mr. Dimos was named the national intelligence financial manager in 2014 and served as the FBI’s senior financial liaison with the Office of the Director of National Intelligence, the Office of Management and Budget, and Congress on national intelligence financial matters.

He was promoted in 2015 to assistant section chief of the recently unified Finance and Facilities Division, overseeing budget formulation, execution, and reporting across all FBI funding sources.

In 2017, Mr. Dimos was appointed as the deputy assistant director of FFD, serving as the FBI’s deputy chief financial officer. He was responsible for budget, procurement, accounting, and audit functions, and led several initiatives to modernize financial services. Mr. Dimos also stood up the new procurement and budget operations at the FBI’s new campus in Huntsville, Alabama.

Before he joined the FBI, Mr. Dimos was a middle school science teacher in Philadelphia through Teach for America. He earned a degree in economics from DePauw University in Indiana and a graduate degree in security studies from Georgetown University.

In his role, Derrick leads the operational personnel, missions and functions of NCMEC to include services provided to families, child-serving professionals and law enforcement. He also supervises the Center’s federal grant awards, which provide critical funds to NCMEC’s mission of finding missing children, stopping child sexual exploitation and assisting law enforcement while managing relationships with critical public, private and industry partners.
Derrick is a highly accomplished member of the Federal Government’s Senior Executive Service with 27 years of law enforcement experience and leadership at the U.S. Department of Justice. Derrick served as the Deputy Director, Chief Operating Officer and Chief Risk Officer of the United States Marshals Service (USMS), where he was responsible for leading USMS employees and supervising global security, investigative and intelligence functions. During his 23-year career at the USMS, Derrick held numerous executive leadership roles to include being appointed by the Attorney General to serve on both the Law Enforcement Advisory Council and Executive Advisory Board for the National Domestic Communications Assistance Center (NDCAC). He also developed and led the agency’s Sex Offender Investigations Branch and National Sex Offender Targeting Center while establishing the Agency’s missing child recovery mission. During his time at the USMS, he was the recipient of four Director’s Awards.
Prior to joining NCMEC, Derrick served as a Principal for Peraton, a national security technology company dedicated to protecting and promoting freedom around the world. As part of the Diplomacy and Justice leadership team, Derrick advised the sector and its clients on security and risk management, planning and performance execution, and assisted law enforcement with data-driven decision making.
Derrick received a graduate fellowship from the University of New Haven, earning his Master of Science degree in Criminal Justice with a concentration in Security Management.

Ms. Nina Ferraro is the Deputy Chief Procurement Officer (DCPO) for the Department of Homeland Security (DHS), having been appointed to this role on September 27, 2021. In this role, she assists the Chief Procurement Officer by managing the Department’s Procurement Line of Business, which spans nine operational procurement activities supporting each of the Department’s Components. Prior to her appointment as DHS’s DCPO, Ms. Ferraro served as Senior Advisor to DHS’s Chief Procurement Officer, from June 2019 through July 2021 and Acting Deputy Chief Procurement Officer from August 2021 through September 26, 2021.

Ms. Ferraro first joined the Office of the Chief Procurement Officer (OCPO) as the Executive Director of Strategic Programs in August 2016. In this capacity, she was responsible for strategic communications, strategic sourcing, strategic planning, and industry engagement activities. From April 2017 through May 2019, Ms. Ferraro served as the Acting Deputy Chief Procurement Officer. Before joining the OCPO team, Ms. Ferraro was the Senior Procurement Executive at the Office of Personnel Management (OPM). Prior to joining OPM, Ms. Ferraro served for eight years as the Director of Acquisitions at the Federal Protective Service, and prior to that spent over 23 years with the Department of the Navy in various acquisition and leadership positions.

Ms. Ferraro holds a Bachelor of Science degree in Business Administration from Chestnut Hill College and a Master of Science in Management and Leadership from Rosemont College.

Mike Prado is a member of the Senior Executive Service and serves as the Deputy Assistant Director for Homeland Security Investigations (HSI), where he leads its Cyber Crimes Center (C3). At C3, he leads a federal law enforcement workforce utilizing cutting-edge technology and 21st century investigative techniques to combat cyber and cyber-facilitated transnational criminal activity. C3 provides investigative, technical, and resource support to all HSI domestic and international field offices, in support of a broad spectrum of cyber investigations, including online child sexual exploitation and abuse, network intrusion, and illicit activity on the dark web, to include narcotics and weapons trafficking. C3 also oversees HSI’s Computer Forensic program and maintains programmatic oversight and coordination of all cyber training, outreach, and specialized solutions to counter illicit use of technologies.
Prior to his current assignment, Mr. Prado was the Deputy Special Agent in Charge of HSI Charlotte and the Carolinas. He has also served as the Chief of Staff and Deputy Chief of Staff for the Deputy Director and Director of ICE, respectively and has also served as the Assistant Special Agent in Charge for the HSI Washington DC field office and Division Chief of C3. Mr. Prado has held additional positions throughout his career, including a fellowship with the International Association of Chiefs of Police as HSI’s liaison to state and local law enforcement, congressional liaison Chief of Domestic Operations, Resident Agent in Charge of the California Central Valley, and Group Supervisor of HSI Bakersfield and HSI Fresno.
Mr. Prado is a graduate of the DHS Senior Executive Service Career Development Program, where he completed a developmental assignment as the Deputy Director of the DHS Joint Requirements Council. Mr. Prado has 25 years of law enforcement experience, beginning his career as an investigator with the Tulare County (CA) District Attorney’s Office in 1999, and the U.S. Customs Service Office of Investigations in 2002. Mr. Prado holds a Bachelor of Arts in History from Sonoma State University.

Telly J. Renfroe is the Director of the Procurement Services Staff. A retired United States Marine Corps veteran, Mr. Renfroe served with distinction for two decades, assuming numerous pivotal roles that enriched his professional experience and knowledge base. Following his honorable military service, he contributed as the Director of Contracts for a non-profit, focusing on the employment of individuals with differing abilities. Subsequently, Mr. Renfroe became the Information Technology (IT) Contracting Chief for the Alcohol, Tobacco, Firearms, and Explosives (ATF) and later, the Deputy Director for PSS before stepping into his current role. He successfully awarded the Department of Justice's (DOJ or Department) Enterprise Infrastructure Solutions, totaling $3 billion, enabling comprehensive IT services across all DOJ components, and achieving an estimated cost avoidance of $360 million. Additionally, he orchestrated a substantial 10-year Blanket Purchase Agreement with Amazon Web Services valued at an estimated $300 million, leading to the closure of 44 internal data centers and generating approximately $50 million in savings through negotiated discounts over the agreement's lifespan. Mr. Renfroe negotiations with leading corporations such as Adobe, Oracle, and Microsoft on behalf of the Department. He is at the forefront of innovating procurement processes in PSS by seamlessly integrating modern technology and innovative solutions. Mr. Renfroe’s outstanding contributions have earned him the Justice Management Division Special Commendation Award twice. He earned a Master of Business Administration from Webster University and a Masters of Program Management from Keller Graduate School of Management and is Federal Acquisition Certification in Contracting Professional certified in Contracting by the Federal Acquisition Institute.