Julliette Hernandez

Agency: Defense Threat Reduction Agency Department of Defense
Email: julliette.n.hernandezsantamaria.civ@mail.mil
Phone: (571) 616-5782
Latest SAM.gov record: Jul 9, 2026

Contact facts

SAM.gov notices: 3
Contract awards: 7 As contracting staff
Top vendors: Applied Research Associates, Inc. 3 contract awards · $123M in award value

Leidos, Inc. 2 contract awards · $155M in award value
First SAM.gov record: Jul 21, 2025

Notices come from SAM.gov and awards from FPDS, which names the staff who created, approved or last changed an award without saying which.

SAM.gov notices

Notice	Posted
DTRA RD Program Management Support (PMS) A&AS RFI Pre-Solicitation	Dec 30, 2024
DTRA RD scientific & technical support (STS) a&as RFI Pre-Solicitation	Dec 30, 2024
Exception to Fair Opportunity (ETFO) for Integrated Weapons of Mass Destruction (IWMDT) Nuclear Planning and Execution System (NPES) Support. Limited / Sole Source Justification	Aug 12, 2025

Contract awards and IDVs

Award	Awarded	Obligated
RD-CXD and RD-CXN systems, engineering, and integration (SE and I) support. HDTRA126FE065 · Applied Research Associates, Inc.	Aug 7, 2026	$4,861,302
Scientific, technical, and engineering support to develop analytical tools for assessing and targeting WMD threats… HDTRA126FE057 · Leidos, Inc.	Aug 3, 2026	$16,258,011
Nuclear capabilities services development HDTRA126FE004 · Applied Research Associates, Inc.	Dec 2, 2025	$10,661,327
Target assessment technologies support HDTRA123F0029 · Applied Research Associates, Inc.	Apr 1, 2023	$55,387,334
Target assessment technologies support HDTRA123F0030 · Leidos, Inc.	Apr 1, 2023	$81,397,162
Study to relocate the radio testing range HDTRA126PE002 · LKC Engineering, PLLC	Jan 27, 2026	$250,000
Integrated weapons of mass destruction (IWMDT) follow-on for nuclear planning and execution system (NPES) support. HDTRA125FE029 · Leidos, Inc.	Aug 11, 2025	$210,800

Top vendors

Rank	Vendor	Awards and IDVs	Award value
1	Applied Research Associates, Inc.	3	$123M
2	Leidos, Inc.	2	$155M
3	Leidos, Inc.	1	$201K
4	LKC Engineering, PLLC	1	$250K

Award value adds up the base and exercised options recorded for the contract awards naming them. IDVs carry no value of their own.

Top NAICS codes

Rank	NAICS code	SAM.gov records
1	541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	4
2	541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	2
3	541330 Engineering Services	1

Top PSC codes

Rank	PSC code	SAM.gov records
1	AC33 National Defense R&D Services; Defense-Related Activities; Experimental Development	7
2	AC35 National Defense R&D Svcs; Defense-Related Activities; R&D Facilities & Maj Equip	1

Quick answers

Who is Julliette Hernandez?

Julliette Hernandez is a federal contracting contact at Defense Threat Reduction Agency (Department of Defense). Point of contact on 3 SAM.gov notices and contracting staff on 7 contract awards, from July 21, 2025 to July 9, 2026.

How do I contact Julliette Hernandez?

SAM.gov lists Julliette Hernandez's email julliette.n.hernandezsantamaria.civ@mail.mil and phone (571) 616-5782.

What is the latest SAM.gov notice naming Julliette Hernandez?

DTRA RD Program Management Support (PMS) A&AS RFI, pre-solicitation, posted December 30, 2024.

Which vendors has Julliette Hernandez awarded contracts to?

The vendors on the most contract awards and IDVs naming Julliette Hernandez are Applied Research Associates, Inc., Leidos, Inc. and Leidos, Inc.. Julliette Hernandez's contract awards to Applied Research Associates, Inc. add up to $123M in base and exercised options.