
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.
🕒 July 24
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.
• Collaborate with the Attack, Data, Commercial and Federal engineering team in all phases of the software development lifecycle. • Work to improve the scalability of the NodeZero platform by empowering the Attack team to build new features and add new offensive attack content into the product. • Work with other attack engineers and N-Day researchers to understand the technical aspects of reverse engineered exploits and how they act and interact within the product in production. • Maintain and extend the platform architecture, design, and data model to support new product features. • Identify, take ownership of and resolve bugs in the product. • Maintain a high-degree of software quality though code review, testing, and production monitoring. • Adhere to and improve technical and developmental processes of the Federal Attack Team
• Bachelor’s and/or master's degree in business administration, commerce, computer science, engineering or related field or significant relevant industry experience. • Proficient in Python software development. • Proficient with Docker, and relational and graph databases. • Strong grasp and application of software design principles. • Experience developing and testing complex software systems with special emphasis on Federal networks at all classification levels. • Strong grasp of secure software development practices. • Proficient with version control software (Git) and effective workflows for team collaboration. • Must have or be willing to gain certifications required to operate on federal networks (SEC+, etc.) • Current or ability to gain and maintain a United States Government Security Clearance.
• Competitive Compensation: We offer competitive salary, equity and benefits. Our benefits include health, vision & dental insurance for you and your family, a flexible vacation policy, and generous parental leave. • Growth Opportunities: Be part of a dynamic and growing team with numerous career advancement opportunities. • Innovation-Driven Culture: Work in a collaborative environment that encourages creativity and out-of-the-box thinking. • Hybrid & Remote Work: We embrace a mix of remote and hybrid work models depending on role and location, including our Chicago office, where some roles require regular in-office presence. • Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive.
Apply Now🕒 July 23
Lead Full Stack Engineer ensuring Humana's healthcare NBA platform reliability, testing, and scalability. Maintaining production readiness across distributed Java, Python, Node.js, and TypeScript services.
🇺🇸 United States – Remote
💵 $155.2k - $213.4k / year
⏰ Full Time
🟠 Senior
🧑💻 Full-stack Engineer
🦅 H1B Visa Sponsor
🕒 July 23
Senior Staff Engineer at GEICO providing technical leadership in .NET development. Collaborating with teams to create software solutions and improve processes.
🇺🇸 United States – Remote
💵 $195k - $260k / year
⏰ Full Time
🟠 Senior
🧑💻 Full-stack Engineer
🦅 H1B Visa Sponsor
🕒 July 23
NCX Senior Engineer developing innovative AI infrastructure solutions for NVIDIA's AI Accelerator team. Collaborating with customers to ensure efficient performance on NVIDIA platforms across various environments.
🇺🇸 United States – Remote
💵 $184k - $356.5k / year
⏰ Full Time
🟠 Senior
🧑💻 Full-stack Engineer
🦅 H1B Visa Sponsor
🕒 July 23
Software Engineer designing core components for autonomous vehicles at Helm.ai. Collaborating on deep learning methodologies for advanced motion planning and decision frameworks.
🇺🇸 United States – Remote
💰 Corporate Round - Helm.ai on 2025-10
⏰ Full Time
🟡 Mid-level
🟠 Senior
🧑💻 Full-stack Engineer
🦅 H1B Visa Sponsor
🕒 July 23
Senior Fullstack Engineer developing end-user features for Clarium's AI-powered healthcare platform. Collaborating with cross-functional teams in a remote setting to enhance hospital supply chains.
🇺🇸 United States – Remote
💵 $140k - $190k / year
⏰ Full Time
🟠 Senior
🧑💻 Full-stack Engineer
🦅 H1B Visa Sponsor