DouxProcess Directory
Add to your AI

Ask for any business in the US.

NAICS 541330 · Engineering Services

you asked:

Engineering firm in Washington, DC

141 engineering firm in Washington, DC. Every listing checked against the issuer's record, in the published order.

  1. A&F Engineers Inc

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for A&F Engineers Inc
    SAM.gov registration
    US-GSA-SAM WM66KMNEL8C4
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Dec 24, 2026
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  2. Absg Consulting Inc

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Absg Consulting Inc
    SAM.gov registration
    US-GSA-SAM D5EMJWKWDNF5
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 20, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  3. Alpha-Vector Consulting LLC, Alpha Vector

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Alpha-Vector Consulting LLC, Alpha Vector
    SAM.gov registration
    US-GSA-SAM YSJZBKH1S2P3
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Aug 15, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  4. Alphatec PC

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Alphatec PC
    SAM.gov registration
    US-GSA-SAM YVMBYACMNKU1
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jul 15, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  5. Amt LLC

    ActiveTax-exempt corporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Amt LLC
    SAM.gov registration
    US-GSA-SAM KHNUWR6H7HL4
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Tax-exempt corporation registered in SAM.gov
    Expires
    Jul 15, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  6. Arcadis-Zapata JV

    ActivePartnership or limited liability partnership registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Arcadis-Zapata JV
    SAM.gov registration
    US-GSA-SAM RAEDRH4H3CA7
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    Aug 13, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  7. Arcfield

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Arcfield
    SAM.gov registration
    US-GSA-SAM WNEZSZ87MQ23
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 14, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  8. Arx USA Inc., North America

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Arx USA Inc., North America
    SAM.gov registration
    US-GSA-SAM JFBHPMKXM673
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jul 28, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  9. Azierta LLC

    ActivePartnership or limited liability partnership registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Azierta LLC
    SAM.gov registration
    US-GSA-SAM QW2YHJMYPSA5
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    Dec 29, 2026
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  10. Baumann Consulting, Inc.

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Baumann Consulting, Inc.
    SAM.gov registration
    US-GSA-SAM N19ZLX6HJLH8
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    May 11, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  11. Bcs Allegient

    ActivePartnership or limited liability partnership registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Bcs Allegient
    SAM.gov registration
    US-GSA-SAM FKCHSEYVQG71
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    May 21, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  12. Brandes & Cassagnol Engineers PC

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Brandes & Cassagnol Engineers PC
    SAM.gov registration
    US-GSA-SAM ENUXVQ7E43K1
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Dec 1, 2026
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  13. Capital Group, LLC

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Capital Group, LLC
    SAM.gov registration
    US-GSA-SAM EM3LR5PXGJ88
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 15, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  14. Cardinal Engineering LLC

    ActiveSole proprietorship registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Cardinal Engineering LLC
    SAM.gov registration
    US-GSA-SAM C6KWNDH3EEB5
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Sole proprietorship registered in SAM.gov
    Expires
    Jul 9, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  15. Cavan Solutions Inc

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Cavan Solutions Inc
    SAM.gov registration
    US-GSA-SAM CJCLTJMRNJV8
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Dec 1, 2026
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  16. Chamberlin & Chamberlin Inc

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Chamberlin & Chamberlin Inc
    SAM.gov registration
    US-GSA-SAM NW39G6QF8BS6
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Mar 16, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  17. Cnc Civil Services LLC, Cnc Civil Services, LLC

    ActivePartnership or limited liability partnership registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Cnc Civil Services LLC, Cnc Civil Services, LLC
    SAM.gov registration
    US-GSA-SAM PK3LTVGVUBP9
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    Sep 28, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  18. Core Power US Inc

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Core Power US Inc
    SAM.gov registration
    US-GSA-SAM D5JDQ1F6V9A9
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Mar 6, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  19. Corner Alliance Incorporated

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Corner Alliance Incorporated
    SAM.gov registration
    US-GSA-SAM KXR5HV5MSB96
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 4, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

  20. Cssi, LLC

    ActiveCorporation registered in SAM.gov

    Washington, DC

    Ask it
    Proof for Cssi, LLC
    SAM.gov registration
    US-GSA-SAM MU5BJR4UM2V3
    Issuer
    US-GSA-SAM
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jul 30, 2027
    Checked
    Oct 23, 2026
    Where
    Washington, DC · serves District of Columbia
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → US-GSA-SAM record

Free for people · nobody pays to rank. Run one of these businesses? Claim it free.

Checked facts from public license files · How ranking works