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NAICS 541330 · Engineering Services

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Engineering firm in Illinois

1,517 engineering firm listed in Illinois, each checked against the issuer's record. In the published order.

  1. 360 Energy Group, LLC

    ActiveCorporation registered in SAM.gov

    Chicago, IL

    CallAsk it
    Proof for 360 Energy Group, LLC
    SAM.gov registration
    SAM.gov HALQGL2R1PB9
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 5, 2027
    Checked
    Oct 23, 2026
    Where
    Chicago, IL · serves Illinois
    Phone
    (800) 401-0360
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  2. Alfred Benesch & CO

    ActiveCorporation registered in SAM.gov

    Chicago, IL

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    Proof for Alfred Benesch & CO
    SAM.gov registration
    SAM.gov GEYJN659GK66
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jan 19, 2027
    Checked
    Oct 23, 2026
    Where
    Chicago, IL · serves Illinois
    Phone
    (312) 565-0450
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  3. Alpha Commissioning Engineers, Inc.

    ActiveCorporation registered in SAM.gov

    Northbrook, IL

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    Proof for Alpha Commissioning Engineers, Inc.
    SAM.gov registration
    SAM.gov SJVPKN1CMEH6
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Aug 19, 2027
    Checked
    Oct 23, 2026
    Where
    Northbrook, IL · serves Illinois
    Phone
    (224) 353-9000
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  4. Andrews Engineering, Inc.

    ActiveCorporation registered in SAM.gov

    Springfield, IL

    CallAsk it
    Proof for Andrews Engineering, Inc.
    SAM.gov registration
    SAM.gov ZUK8XNN24L87
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 1, 2027
    Checked
    Oct 23, 2026
    Where
    Springfield, IL · serves Illinois
    Phone
    (217) 787-2334
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  5. Ardmore Roderick

    ActiveCorporation registered in SAM.gov

    Chicago, IL

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    Proof for Ardmore Roderick
    SAM.gov registration
    SAM.gov TNN1JBYJGLS1
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Sep 3, 2027
    Checked
    Oct 23, 2026
    Where
    Chicago, IL · serves Illinois
    Phone
    (312) 795-1400
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  6. Austin Engineering CO Inc

    ActiveCorporation registered in SAM.gov

    Peoria, IL

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    Proof for Austin Engineering CO Inc
    SAM.gov registration
    SAM.gov YAVWJJZLNBA5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 2, 2027
    Checked
    Oct 23, 2026
    Where
    Peoria, IL · serves Illinois
    Phone
    (309) 691-0224
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  7. Bartoszek Engineering

    ActiveSole proprietorship registered in SAM.gov

    Aurora, IL

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    Proof for Bartoszek Engineering
    SAM.gov registration
    SAM.gov CH25AQKKMBP7
    Issuer
    SAM.gov
    Status
    Active
    Class
    Sole proprietorship registered in SAM.gov
    Expires
    Oct 30, 2026
    Checked
    Oct 23, 2026
    Where
    Aurora, IL · serves Illinois
    Phone
    (630) 844-0248
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  8. Baxter & Woodman, Inc.

    ActiveCorporation registered in SAM.gov

    Crystal Lake, IL

    CallAsk it
    Proof for Baxter & Woodman, Inc.
    SAM.gov registration
    SAM.gov Q11LLD1LKYL5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Aug 19, 2027
    Checked
    Oct 23, 2026
    Where
    Crystal Lake, IL · serves Illinois
    Phone
    (815) 459-1260
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  9. Benton & Associates Inc

    ActiveCorporation registered in SAM.gov

    Jacksonville, IL

    CallAsk it
    Proof for Benton & Associates Inc
    SAM.gov registration
    SAM.gov YWE9HZLV9RK6
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 12, 2027
    Checked
    Oct 23, 2026
    Where
    Jacksonville, IL · serves Illinois
    Phone
    (217) 245-4146
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  10. Brown & Roberts Inc

    ActiveCorporation registered in SAM.gov

    Harrisburg, IL

    CallAsk it
    Proof for Brown & Roberts Inc
    SAM.gov registration
    SAM.gov QP7SKQS2VTB3
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jun 19, 2027
    Checked
    Oct 23, 2026
    Where
    Harrisburg, IL · serves Illinois
    Phone
    (618) 252-8111
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  11. Cae Services Corporation

    ActiveCorporation registered in SAM.gov

    Batavia, IL

    CallAsk it
    Proof for Cae Services Corporation
    SAM.gov registration
    SAM.gov ZKEQCTMQJPG5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 10, 2027
    Checked
    Oct 23, 2026
    Where
    Batavia, IL · serves Illinois
    Phone
    (630) 761-9898
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  12. Chamlin & Associates, Inc

    ActiveCorporation registered in SAM.gov

    Peru, IL

    CallAsk it
    Proof for Chamlin & Associates, Inc
    SAM.gov registration
    SAM.gov EYGLP4MK16P5
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Aug 7, 2027
    Checked
    Oct 23, 2026
    Where
    Peru, IL · serves Illinois
    Phone
    (815) 223-3344
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  13. Chastain & Associates LLC

    ActivePartnership or limited liability partnership registered in SAM.gov

    Decatur, IL

    CallAsk it
    Proof for Chastain & Associates LLC
    SAM.gov registration
    SAM.gov EPDNDKLLMAV3
    Issuer
    SAM.gov
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    Sep 14, 2027
    Checked
    Oct 23, 2026
    Where
    Decatur, IL · serves Illinois
    Phone
    (217) 422-8544
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  14. Ckl Engineers, LLC

    ActiveCorporation registered in SAM.gov

    Chicago, IL

    CallAsk it
    Proof for Ckl Engineers, LLC
    SAM.gov registration
    SAM.gov QKRDYXVGF865
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Dec 29, 2026
    Checked
    Oct 23, 2026
    Where
    Chicago, IL · serves Illinois
    Phone
    (312) 539-5256
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  15. Clark Dietz Inc

    ActiveCorporation registered in SAM.gov

    Champaign, IL

    CallAsk it
    Proof for Clark Dietz Inc
    SAM.gov registration
    SAM.gov Q5PYVGJPA716
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 15, 2027
    Checked
    Oct 23, 2026
    Where
    Champaign, IL · serves Illinois
    Phone
    (217) 373-8900
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  16. Crawford, Murphy & Tilly, Inc.

    ActiveCorporation registered in SAM.gov

    Springfield, IL

    CallAsk it
    Proof for Crawford, Murphy & Tilly, Inc.
    SAM.gov registration
    SAM.gov MVNZJD256ZC9
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Nov 12, 2026
    Checked
    Oct 23, 2026
    Where
    Springfield, IL · serves Illinois
    Phone
    (217) 787-8050
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  17. Creative Thermal Solutions, Inc.

    ActiveCorporation registered in SAM.gov

    Urbana, IL

    CallAsk it
    Proof for Creative Thermal Solutions, Inc.
    SAM.gov registration
    SAM.gov CHLBSZA82H88
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Apr 23, 2027
    Checked
    Oct 23, 2026
    Where
    Urbana, IL · serves Illinois
    Phone
    (217) 344-7663
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  18. Ctlgroup

    ActiveCorporation registered in SAM.gov

    Mount Prospect, IL

    CallAsk it
    Proof for Ctlgroup
    SAM.gov registration
    SAM.gov LG1EQ177QAH6
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Feb 26, 2027
    Checked
    Oct 23, 2026
    Where
    Mount Prospect, IL · serves Illinois
    Phone
    (847) 965-7500
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  19. Cxe Group LLC

    ActivePartnership or limited liability partnership registered in SAM.gov

    Edwardsville, IL

    CallAsk it
    Proof for Cxe Group LLC
    SAM.gov registration
    SAM.gov YZ31EZNJ9MJ9
    Issuer
    SAM.gov
    Status
    Active
    Class
    Partnership or limited liability partnership registered in SAM.gov
    Expires
    Jul 27, 2027
    Checked
    Oct 23, 2026
    Where
    Edwardsville, IL · serves Illinois
    Phone
    (618) 659-9601
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

  20. Dbhms

    ActiveCorporation registered in SAM.gov

    Chicago, IL

    CallAsk it
    Proof for Dbhms
    SAM.gov registration
    SAM.gov Y34FMKJT62T8
    Issuer
    SAM.gov
    Status
    Active
    Class
    Corporation registered in SAM.gov
    Expires
    Jul 21, 2027
    Checked
    Oct 23, 2026
    Where
    Chicago, IL · serves Illinois
    Phone
    (312) 915-0557
    Listing
    Built from public records. Not claimed yet, so call them directly.
    Proof → SAM.gov record

Cities

Chicago 343Naperville 49Schaumburg 34Lisle 31Springfield 29Rockford 26Elk Grove Village 25Aurora 24Downers Grove 24Elgin 24Peoria 23Arlington Heights 16Northbrook 16St. Charles 16Champaign 15Lombard 15Oak Brook 14Joliet 13Decatur 12Rosemont 12Columbia 11Itasca 11Belleville 10Burr Ridge 10

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