Horizon3 careers and jobs

Open roles

• Senior Backend Engineer, Integrations

  Remote, some regions·US·Sep 28, 2026

  USD 170,000–235,000 / year

  Sep 28, 2026
• Senior Backend Engineer, Growth & MSSP

  Remote, some regions·US·Sep 28, 2026

  USD 170,000–235,000 / year

  Sep 28, 2026
• Senior/Staff Site Reliability Engineer

  Remote, some regions·US·Sep 25, 2026

  USD 199,750–270,000 / year

  Sep 25, 2026
• Senior/Staff Developer Experience Engineer

  Remote, some regions·US·Sep 25, 2026

  USD 199,750–270,000 / year

  Sep 25, 2026
• Senior/Staff Platform Engineer

  Remote, some regions·US·Sep 24, 2026

  USD 199,750–270,000 / year

  Sep 24, 2026
• Senior Detection Engineer (EDR), Autonomous Defense

  Remote, some regions·US·Sep 18, 2026

  USD 195,000–230,000 / year

  Sep 18, 2026
• Senior Machine Learning Engineer, Autonomous Defense

  Remote, some regions·US·Sep 14, 2026

  USD 211,000–249,000 / year

  Sep 14, 2026
• Senior Backend Engineer, Autonomous Defense

  Remote, some regions·US·Sep 14, 2026

  USD 170,000–235,000 / year

  Sep 14, 2026
• Applied AI Engineer, Autonomous Defense

  Remote, some regions·US·Sep 14, 2026

  USD 313,000–369,000 / year

  Sep 14, 2026
• Principal Software Engineer, Autonomous Defense

  Remote, some regions·US·Sep 14, 2026

  USD 255,000–300,000 / year

  Sep 14, 2026
• Staff Attack Engineer, Internal/AD

  Remote, some regions·US·Sep 1, 2026

  USD 235,000–275,000 / year

  Sep 1, 2026
• Senior Backend Engineer, Data & App Platform

  Remote, some regions·US·Aug 28, 2026

  USD 170,000–235,000 / year

  Aug 28, 2026
• Senior Backend Engineer, Precision Defense

  Remote, some regions·US·Aug 27, 2026

  Aug 27, 2026
• Senior/Staff Data Engineer

  Remote, some regions·US·Aug 27, 2026

  USD 199,000–270,000 / year

  Aug 27, 2026
• Staff Software Engineer, Tripwires

  Remote, some regions·US·Jul 28, 2026

  USD 229,000–270,000 / year

  Jul 28, 2026
• Federal Software Engineer, Attack

  Remote, some regions·US·May 28, 2026

  May 28, 2026
• Federal Backend Engineer

  Remote, some regions·US·May 28, 2026

  May 28, 2026
• Staff Attack Engineer, AI/LLM

  Remote, some regions·US·Apr 10, 2026

  USD 235,000–275,000 / year

  Apr 10, 2026
• Senior Back End Engineer

  Remote, some regions·US·Jun 13, 2025

  USD 170,000–235,000 / year

  Jun 13, 2025