Diana Sesta

Contract Specialist VA Technology Acquisition Center

Agency: Department of Veterans Affairs
Email: diana.sesta@va.gov
Phone: (848) 377-5053
Latest SAM.gov record: Sep 1, 2026

Contact facts

Offices: 2
SAM.gov notices: 7
Contract awards: 25 As contracting staff
Top vendors: Sierra7, Inc. 3 contract awards · $29.4M in award value

Insignia Technology Services, LLC 2 contract awards · $9.05M in award value
First SAM.gov record: Nov 16, 2022

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
DG01--Connectivity & Collaboration Services (CCS): Network Engineering, Design, Implementation and Infrastructure Support (NEDIIS) - Recompete (VA-26-00019737) Pre-Solicitation · VA Technology Acquisition Center · 36C10B26Q0078	Nov 20, 2025
DG01--Connectivity & Collaboration Services (CCS): Network Engineering, Design, Implementation and Infrastructure Support (NEDIIS) - Recompete (VA-26-00019737) Solicitation · VA Technology Acquisition Center · 36C10B26Q0078	Mar 3, 2026
DA01--Connectivity and Collaboration Services (CCS): Enterprise Messaging, Collaboration, Authentication and Office 365 Services (EMCAO) - New Task Order (VA-26-00011030) Pre-Solicitation · VA Technology Acquisition Center · 36C10B26Q0066	Nov 12, 2025
DA01--Connectivity and Collaboration Services (CCS): Enterprise Messaging, Collaboration, Authentication and Office 365 Services (EMCAO) - New Task Order (VA-26-00011030) Solicitation · VA Technology Acquisition Center · 36C10B26Q0066	Jan 22, 2026
DA01--Quality Assurance (QA) Web Application Sustainment Support (VA-25-00002273) NEW TASK ORDER Pre-Solicitation · VA Technology Acquisition Center	Sep 24, 2024
DA01--Health Integration & Modernization (HI&M), New Task Order (VA-24-00023686) Pre-Solicitation · VA Technology Acquisition Center	Feb 28, 2024
R499--ReCompete_RTLS Maximo (VA-24-00032946) Pre-Solicitation · VA Technology Acquisition Center	Apr 19, 2024

Contract awards and IDVs

Award	Awarded	Obligated
DSS periop software and license management 36C10B25F0032 · Blue TECH Inc. · VA Technology Acquisition Center	Nov 15, 2024	$4,807,280
Supply chain management product line devsecops and integration 36C10B21N10010010 · Cognosante MVH LLC · VA Technology Acquisition Center	Sep 14, 2021	$257,909,495
Emcoa base award 36C10B26N10350007 · Client First Technologies, Inc. · VA Technology Acquisition Center	Mar 6, 2026	$3,364,815
Infrastructure and platforms support services on behalf of OI & T, devsecops transformation twenty-one total technology… 36C10B21N10250020 · Insignia Technology Services, LLC · VA Technology Acquisition Center	Sep 8, 2021	$3,964,629
Data and scientific computing service for sustainment of genisis 36C10B22N10030035 · Govcio, LLC · VA Technology Acquisition Center	Sep 28, 2022	$11,525,614
Veterans wireless guest internet access in support of the northern indiana health care system's fort wayne and marion… 36C10B22N10240017 · Clear Vantage Point Solutions LLC · VA Technology Acquisition Center	May 20, 2022	$494,781
Software engineering support services for electronic data interchange (EDI) transactions application suite (TAS) 36C10B19N10020014 · Science Applications International Corporation · VA Technology Acquisition Center	Jul 22, 2019	$98,090,409
Office of information security (OIS) digital transformation artificial intelligence (AI) robotic process automation… 36C10B21N10250021 · Insignia Technology Services, LLC · VA Technology Acquisition Center	Sep 30, 2021	$5,088,723
Million veteran program online follow-on 36C10B23N10230006 · Peraton Enterprise Solutions LLC · VA Technology Acquisition Center	Apr 13, 2023	$21,178,256
Task order for corp tmss 36C10B20N10050017 · Tista Science And Technology Corporation · VA Technology Acquisition Center	Jul 27, 2020	$36,109,826
Windows client project will support all desktops and laptops and the applications run across the VA enterprise… 36C10B24N10330003 · Mind Computing, Inc. · VA Technology Acquisition Center	Dec 12, 2023	$1,012,474
Rtls maximo recompete base period 36C10B24N10360005 · Thunderyard Liberty JV LLC · VA Technology Acquisition Center	Jun 29, 2024	$844,192
Sustainment of the rtls to maximo interface 36C10B19N10150036 · Liberty It Solutions LLC · VA Technology Acquisition Center	Apr 26, 2019	$2,151,358
Benefits and memorials services portfolio independent verification and validation services 36C10B23N10140046 · Sierra7, Inc. · VA Technology Acquisition Center	Mar 21, 2023	$32,879,935
Space management support system IT support services 36C10B19N10270005 · King Street Technology Partners, LLC · VA Technology Acquisition Center	Apr 24, 2019	$3,127,756
Modification to transformation twenty one total technology next generation (T4NG) basic contract updates (P00007). 36C10B21N10260046 · Pro-Sphere Tek, Inc. · VA Technology Acquisition Center	Jan 21, 2021	$15,345,531
Brand name secure shell (SSH) communications security tectia software maintenance 36C10B21F0304 · Metgreen Solutions Inc. · VA Technology Acquisition Center	Oct 1, 2021	$123,984
Brand name sectera viper phone warranty maintenance 36C10B23F0243 · General Dynamics One Source LLC · VA Technology Acquisition Center	Sep 1, 2023	$16,975
Brand name or equal servers for cybersecurity operations center (CSOC) increased frequency scanning (HARDWARE) 36C10B23F0273 · Architechture Solutions LLC · VA Technology Acquisition Center	Sep 1, 2023	$671,381
Objective and key results (OKR) tracking system 36C10B21F0316 · Sierra7, Inc. · VA Technology Acquisition Center	Sep 17, 2021	$222,399
Rtls ssoi integration 36C10B23F0059 · Agilerank LLC · VA Technology Acquisition Center	Feb 7, 2023	$144,500
Vocera communication system service and maintenance for louis stokes VA medical center. 36C10B23F0038 · Alvarez LLC · VA Technology Acquisition Center	Dec 11, 2022	$1,765,562
The purpose of this order is to procure brand name palo alto wildfire subscription services. 36C10B23F0144 · V3Gate, LLC · VA Technology Acquisition Center	Jun 16, 2023	$397,619
Transformation twenty-one total technology next generation (T4NG) privacy impact assessment 36C10B21N10140040 · Sierra7, Inc. · VA Technology Acquisition Center	Feb 7, 2021	$3,654,368
Vaco mobile wireless support on behalf of OIT, devsecops, EUO under transformation twenty-one total technology next… 36C10B22N10200010 · Sprezzatura-Governmentcio Joint Venture LLC · VA Technology Acquisition Center	Mar 17, 2022	$4,079,647

Show all 25

Top vendors

Rank	Vendor	Awards and IDVs	Award value
1	Sierra7, Inc.	3	$29.4M
2	Insignia Technology Services, LLC	2	$9.05M
3	King Street Technology Partners, LLC	1	$3.13M
4	General Dynamics One Source LLC	1	$17K
5	Clear Vantage Point Solutions LLC	1	$575K
6	Thunderyard Liberty JV LLC	1	$844K
7	Pro-Sphere Tek, Inc.	1	$14.9M
8	Agilerank LLC	1	$144K
9	Metgreen Solutions Inc.	1	$91.8K
10	Tista Science And Technology Corporation	1	$36.1M

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	541512 Computer Systems Design Services	25
2	541519 Other Computer Related Services	6
3	334111 Electronic Computer Manufacturing	1

Top PSC codes

Rank	PSC code	SAM.gov records
1	DA01 It And Telecom - Business Application/Application Development Support Services (Labor)	8
2	DA10 It And Telecom - Business Application/Application Development Software As A Service	8
3	R499 Support- Professional: Other	4
4	D399 It And Telecom- Other It And Telecommunications	2
5	DG01 It And Telecom - Network Support Services (Labor)	2
6	7A21 It And Telecom - Business Application Software (Perpetual License Software)	1
7	7B22 It And Telecom - Compute: Servers (Hardware And Perpetual License Software)	1
8	DD01 It And Telecom - Service Delivery Support Services: Itsm, Operations Center, Project/Pm (Labor)	1
9	DE01 IT and Telecom - End User: Help Desk; Tier 1-2, Workspace, Print, Output, Productivity Tools (Labor)	1
10	DE02 It And Telecom - Mobile Device Support Services (Labor)	1

Offices

Rank	Office	SAM.gov records
1	VA Technology Acquisition Center	31
2	Veterans Integrated Service Network 10 (VHA)	1

Other records

Record	Kind
Connectivity and Collaboration Services : Enterprise Messaging, Collaboration, Authentication and Office 365 Services - New Task Order	Forecast
Connectivity & Collaboration Services : Network Engineering, Design, Implementation and Infrastructure Support - Recompete	Forecast
36C10B26Q0078.docx	Government file
36C10B26Q0066.docx	Government file
EMCAO SAM.GOV RFI 11.12.25.doc	Government file

Quick answers

Who is Diana Sesta?

Diana Sesta is a Contract Specialist at VA Technology Acquisition Center (Headquarters). Point of contact on 7 SAM.gov notices and contracting staff on 25 contract awards, from November 16, 2022 to September 1, 2026.

What agency does Diana Sesta work for?

Diana Sesta's SAM.gov records name VA Technology Acquisition Center (Headquarters) most, among 2 offices.

How do I contact Diana Sesta?

SAM.gov lists Diana Sesta's email diana.sesta@va.gov and phone (848) 377-5053.

What is the latest SAM.gov notice naming Diana Sesta?

DG01--Connectivity & Collaboration Services (CCS): Network Engineering, Design, Implementation and Infrastructure Support (NEDIIS) - Recompete (VA-26-00019737), pre-solicitation, posted November 20, 2025.

Which vendors has Diana Sesta awarded contracts to?

The vendors on the most contract awards and IDVs naming Diana Sesta are Sierra7, Inc., Insignia Technology Services, LLC and King Street Technology Partners, LLC. Diana Sesta's contract awards to Sierra7, Inc. add up to $29.4M in base and exercised options.