
51 - 200 employees
Founded 2019
🔒 Cybersecurity
🤖 Artificial Intelligence
☁️ SaaS
Cybersecurity • Artificial Intelligence • SaaS
Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.
🔥 0 minutes ago
🇺🇸 United States – Remote
💵 $199.8k - $270.3k / year
⏰ Full Time
🟠 Senior
🔙 Backend Engineer
👻 Ghost score 20%
Improve your chances of getting an interview by checking your resume score before you apply.

51 - 200 employees
Founded 2019
🔒 Cybersecurity
🤖 Artificial Intelligence
☁️ SaaS
Cybersecurity • Artificial Intelligence • SaaS
Horizon3. ai is a cybersecurity company that specializes in autonomous penetration testing through its platform, NodeZero. The company's mission is to proactively identify and address attack vectors before they can be exploited, allowing organizations to continuously assess their security posture across various environments including cloud, IoT, and on-premises systems. Founded by veterans from the US Special Operations and National Security sectors, Horizon3. ai offers a self-service SaaS solution that provides organizations with insights into their security vulnerabilities without requiring persistent or credentialed agents.
• Design and build dedicated normalizers for each EDR vendor • Develop core product features using ETL and GraphQL • Design and implement backend GraphQL APIs • Build and maintain ETL pipelines for efficient data processing and analytics • Own the security controls integration platform • Build live API pipelines and define internal schemas • Manage versioning, deprecations, fault tolerance, and integration health monitoring • Collaborate with the broader backend engineering team on scale and reliability work • Collaborate with frontend team members to present data clearly and improve user experience • Contribute to user-facing product launches, platform enhancements, and stability
• Bachelor's Degree in Computer Science, Computer Engineering or related field • 7+ years of professional software engineering experience using modern object-oriented or functional languages • Experience with Python, Java, Go, Scala, C++, TypeScript, or similar languages • Experience building applications on AWS, Azure, or GCP • Experience with Docker and Kubernetes • Expert proficiency in SQL • Deep experience building and maintaining third-party API integrations at scale • Hands-on familiarity with EDR platforms and understanding of how SOC teams consume EDR data • Experience with ETL and GraphQL • Strong analytical and problem-solving skills • Strong technical documentation ability • Ability to communicate and collaborate with designers, developers, and product managers • Ability and interest in mentoring junior and mid-level engineers
• Equity package in the form of stock options for all full-time roles • Health, vision & dental insurance for you and your family • Flexible vacation policy • Generous parental leave • Career development opportunities • Inclusive and collaborative culture • Remote and hybrid work models depending on role and location
Apply Now🔥 4 hours ago
Back-end engineer developing .NET and cloud-native applications for Filevine, a Legal AI company. Maintaining, improving, and supporting software used by law firms and legal teams.
🇺🇸 United States – Remote
💵 $145k - $190k / year
💰 $108M Series D on 2022-04
⏰ Full Time
🟠 Senior
🔙 Backend Engineer
🦅 H1B Visa Sponsor
🔥 5 hours ago
Snowflake AI/ML architect designing scalable enterprise solutions and managing complex deployments. Aligning technical roadmaps with customer ROI while mentoring architects on MLOps.
🔥 7 hours ago
Backend Engineer building APIs, data pipelines, and core infrastructure for Product Genius’s real-time learning AI. Owning production systems and architecture in a remote seed-stage startup.
🔥 8 hours ago
Senior .NET Developer building scalable .NET systems for GR8_TECH’s B2B iGaming platforms. Designing resilient architectures, delivering production code, and mentoring engineers on the Sport Math Team.
🗣️🇺🇦 Ukrainian Required
🗣️🇷🇺 Russian Required
🔥 15 hours ago
Application Architect designing secure, scalable GoLang, React, and PostgreSQL applications for IPolarity’s IT services clients. Guiding architecture, security, cloud readiness, and engineering teams.