DOSSIER · UPDATED 18 NOV 2025

Halcyon

Modern defensive cyber solutions, while impressive, have failed in the face of cheap and easy-to-create - and most importantly lucrative - ransomware. High-profile breaches are disguising an ugly fact; the companies using next-generation…

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Founded
2021
Headcount
54
Open roles
11
Last raised
Series C · $100M
SECTION I · THE BRIEF

Inside Halcyon

Brief #03432Updated 18 NOV 2025AUSTINFOUNDERS FUNDSERIES C
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Halcyon

Modern defensive cyber solutions, while impressive, have failed in the face of cheap and easy-to-create - and most importantly lucrative - ransomware. High-profile breaches are disguising an ugly fact; the companies…

Founded
2021
Headcount
54
Open roles
11
Last raised
Series C · $100M
Section II — RestrictedMembers only
  • Tech stack (Halcyon engineering primaries)
  • Hiring focus this quarter
  • Interview format & rubric
  • Comp bands by level
  • Decision-makers in talent
  • Recent news & moves
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OPEN ROLES

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    LOCATIONS

    Where they work

    Halcyon Headquarters Location

    Austin, TX, 78749

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    FUNDING

    Capital raised

    Total Amount Raised: $190,000,000

    Halcyon's Investors

    Halcyon Funding Rounds

    • Series C

      $100,000,000

    • Series C

      $100,000,000

      Series C Investors

      Evolution Equity Partners
      Dropbox
      Corner Capital Management
      Bain Capital Ventures
      SYN Ventures
      ServiceNow
      Harmony Partners
      Next47

    • Series B

      $40,000,000

    • Series B

      $40,000,000

      Series B Investors

      Bain Capital Ventures

    • Series A

      $44,000,000

    • Debt Financing

      $6,000,000

    • Series A

      $44,000,000

      Series A Investors

      Corner Ventures
      SYN Ventures
      Gula Tech Adventures
      Founders Fund
      Dell

    • Debt Financing

      $6,000,000

    Funding info provided by Diffbot.
    EMPLOYEE REVIEWS

    On the ground at Halcyon

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