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NAICS 561621

Top contractors in NAICS 561621

The 359 contractors with tracked federal awards in NAICS 561621, totalling $3,203,357,526. Ranked by award value.

See live NAICS 561621 opportunities →All contractors

1M. C. DEAN, INC.$345,414,788101 awards
2SERCO INC$288,326,48010 awards
3GENERAL DYNAMICS MISSION SYSTEMS, INC.$246,227,2514 awards
4JOHNSON CONTROLS SECURITY SOLUTIONS LLC$183,986,941102 awards
5TRIPLE CANOPY INC$164,925,23130 awards
6FIRST COAST SECURITY SOLUTIONS, INC.$143,390,0438 awards
7CACI INTERNATIONAL INC$132,486,1873 awards
8ADVANCED TECHNOLOGY SYSTEMS COMPANY, INC. (OF VIRGINIA)$118,311,4992 awards
9PARAGON SYSTEMS INC$93,286,6234 awards
10XATOR LLC$88,446,5979 awards
11CHENEGA INTEGRATED SECURITY SOLUTIONS, LLC$81,367,6705 awards
12KBR WYLE SERVICES, LLC$79,242,9515 awards
13VERSAR SECURITY SYSTEMS, LLC$64,072,54856 awards
14INDYNE, INC.$62,140,1314 awards
15JOHNSON CONTROLS BUILDING AUTOMATION SYSTEMS, LLC$59,413,1338 awards
16CACI NSS, LLC$48,014,8593 awards
17BIRDI SYSTEMS, INC.$35,482,8864 awards
18SRCTEC, LLC$32,310,0222 awards
19OLGOONIK SOLUTIONS LLC$30,294,6022 awards
20CHENEGA GLOBAL PROTECTION, LLC$29,448,0082 awards
21SCDATACOM, LLC$28,632,31918 awards
22SIEMENS INDUSTRY INC$25,637,49815 awards
23GLOBAL RESOURCE SOLUTIONS INC$24,335,8309 awards
24BCF SOLUTIONS, INC.$22,087,4944 awards
25JOHNSON CONTROLS FIRE PROTECTION LP$21,954,42121 awards
26TROFHOLZ TECHNOLOGIES, INC.$21,502,7566 awards
27GONZALES CONSULTING SERVICES INC$21,229,7002 awards
28INDYNE, INC$20,966,4092 awards
29HURTVET SUBCONTRACTING, INC.$18,682,33918 awards
30CHEROKEE FEDERAL SOLUTIONS, L.L.C.$18,543,9071 awards
31CONCORD CROSSROADS LLC$18,264,4591 awards
32CHEROKEE NATION SYSTEM SOLUTIONS LLC$16,689,8247 awards
33LEIDOS, INC.$16,592,6993 awards
34ELECTRONIC SYSTEMS SERVICES INC$16,153,1201 awards
35SMITHS DETECTION INC.$15,941,3205 awards
36PARSONS GOVERNMENT SERVICES INC.$14,959,0081 awards
37USMAX CORPORATION$14,240,9291 awards
38EVERGREEN FIRE ALARMS LLC$12,685,5384 awards
39LOW VOLTAGE WIRING LTD$12,593,3803 awards
40ELECTRIPRO, INC.$12,329,7566 awards
41KR CONTRACTING INC$12,034,8271 awards
42LBYD FEDERAL, LLC$11,463,7551 awards
43VETERANS FIRE AND LIFE SAFETY CORPORATION$11,274,20716 awards
44CORELOGIX CONSULTING INC$10,863,6186 awards
45INTEGRIWARD, LLC$10,748,6855 awards
46PTSI MANAGED SERVICES INC$10,493,8422 awards
47MEDIA PLUMBING & HEATING INC$10,474,45612 awards
48TRILOGY SECURED SERVICES, L.L.C$10,453,0706 awards
49KASTLE SYSTEMS LLC$9,902,67213 awards
50ADVANTOR SYSTEMS II LLC$9,867,8044 awards
51SYSTEMS ENGINEERING INC$9,670,6971 awards
52LOCKWOOD HILLS FEDERAL LLC$9,452,1361 awards
53CHENEGA SECURITY INTERNATIONAL, LLC$8,331,2274 awards
54ITM4G LLC$7,605,5104 awards
55THE FIELDS GROUP, LLC$7,011,0683 awards
56CONDORTECH SERVICES, INC.$6,722,4365 awards
57SIGNET TECHNOLOGIES, INC.$6,561,3374 awards
58JOHNSONDANFORTH, INC$6,532,0293 awards
59FIRELAKE CONSTRUCTION INC$6,372,3364 awards
60NATIONAL PROJECT MANAGEMENT LLC$5,996,1851 awards