Federal Software Engineer, Attack
Horizon3 AIResponsibilities
- Develop new offensive attack content and features for the NodeZero platform.
- Improve platform scalability and maintain or extend its architecture, design, and data model.
- Work with attack engineers and N-Day researchers to understand reverse-engineered exploits and their production behavior.
- Collaborate with Attack, Data, Commercial, and Federal engineering teams throughout the software development lifecycle.
- Identify, own, and resolve product bugs.
- Maintain software quality through code review, testing, and production monitoring.
- Follow and improve the Federal Attack Team’s technical and development processes.
Requirements
- Bachelor’s or master’s degree in business administration, commerce, computer science, engineering, or a related field, or significant relevant industry experience.
- Proficiency in Python software development, Docker, relational and graph databases, software design principles, Git, and secure software development practices.
- Experience developing and testing complex software systems, especially for Federal networks at all classification levels.
- Ability to evaluate algorithms, data structures, web development, and API design, and to design and assess technical solutions.
- Ability to collaborate with and mentor teammates while managing concurrent initiatives with limited supervision.
- Must have or be willing to obtain certifications required to operate on Federal networks, such as Security+.
- Preferred experience includes AWS development, extensive software architecture and design, fast-paced software development, and cybersecurity certifications such as OSCP, CISSP, or GPEN.
- Current or obtainable U.S. Government Security Clearance is preferred.
Benefits
- Fully remote company with up to 5% job-related travel.
- Health, vision, and dental insurance for employees and families.
- Flexible vacation policy and generous parental leave.
- Equity package in the form of stock options for full-time roles.
- Career advancement opportunities and a collaborative, innovation-driven culture.
About Horizon3 AI
Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up? And, how do we withstand the onslaught of AI-powered attacks? Horizon3.ai’s NodeZero® shifts the advantage from attackers to defenders by giving organizations the power to fight AI with AI. The Proactive Security Platform autonomously tests your defenses at machine speed, safely finds and prioritizes exploitable attack paths, instantly verifies fixes, and drives a continuous loop so you can prove you’re resilient, not just hope you are. NodeZero, the World’s Best AI Hacker™, was built by an elite team of U.S. cyber veterans and has honed its skills over 225K production-safe tests, more than all manual pentests in history. More than 5,000 organizations including the NSA, CISA, Fortune 100 giants, and major healthcare providers trust Horizon3.ai to prioritize what matters and prove they’re ready for what’s next. Horizon3.ai has been recognized by Fast Company as one of the World’s Most Innovative Companies in 2026. The company ranked #3 overall on the 2025 Deloitte Technology Fast 500 and was named the #1 cybersecurity company on the Inc. 5000 in 2025. It has also been named to the Fortune Cyber 60 in both 2023 and 2025 and is a two-time Black Unicorn Award winner.