Senior Software Engineer, Attack

Get to Know Us

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find, fix and verify exploitable attack vectors before criminals exploit them. Our flagship product,  the NodeZeroTM platform, delivers production-safe autonomous pentests and other key assessment operations that scale across the largest internal, external, cloud, and hybrid cloud environments. NodeZero has been adopted by organizations of all sizes, from small educational institutions to government agencies and Global 100 enterprises. It is used by IT Ops/SecOps teams, consulting pentesters, and MSSPs and MSPs.  

We are a fusion of former U.S. Special Operations cyber operators, startup engineers & operators, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools and false positives, resulting in alert fatigue, blind spots, "checkbox” security culture, cybersecurity skills shortage, and the long lead time and expense of hiring outside consultants. Collectively, we are a team of learn-it-alls, committed to a culture of respect, collaboration, ownership, and results. 

As a remote first company, we require minimum 25Mbps consumer grade broadband connection.

What You’ll Do

The Senior Software Engineer is responsible for developing and maintaining core parts of NodeZero’s autonomous penetration testing platform. This platform coordinates execution of an ever-growing set of “attack modules” to efficiently and safely conduct a penetration test in the target environment.  You will be involved in the full software development lifecycle for our core product, including requirements gathering, design, implementation, testing, deployment, and maintenance. 

This is a dynamic position that offers the opportunity to work on a wide range of tasks, crossing the boundaries of software development and offensive security.

• Design and implement foundational technology improvements to enable rapid development of attack modules.

• Collaborate closely with engineering teams to enhance product capabilities and develop new features.

• Implement technologies to monitor and improve the real-time performance and reliability of NodeZero.

• Design and implement SAAS software architectures that scale with a rapidly growing start-up

• Develop testing strategies and scenarios in our Cyber Range to test autonomous penetration test operations in a real-life network environment.

What You’ll Bring 

• Software Engineering: Strong understanding of secure software development practices, including experience with version control systems like Git and effective team workflows.

• Problem-Solving: Strong analytical skills with an aptitude for solving complex technical problems.

• Self-Motivation: The ability to work independently with minimal supervision, demonstrating initiative and a high level of energy.

• Collaboration: Work closely with adjacent teams to rapidly develop new cross-functional features and provide X-as-a-Service relationships to other teams.

• Communication: Strong technical writing and documentation skills, with the ability to convey findings and methodologies to both technical and non-technical stakeholders.

• Technical Design: Proficiency in designing, presenting, and evaluating technical solutions, ensuring high-quality software and secure development practices.

• Adaptability: Ability to independently learn and adapt to new technologies, tools, and methodologies.

Required Education/Experience

• Proficiency in Python: Expert-level proficiency in large-scale Python software development.

• Software Design: Experience in creating, communicating, and evaluating software designs, including identifying tradeoffs in performance and maintainability.

• Network Protocols: Strong understanding of network protocols and their intricacies, including their role in exploitation vectors.

• Database Experience: Experience with relational (Postgres) or graph (Neo4j) database systems.

• Minimum of 8 years of experience in Software Engineering or similar role.

• Bachelor's Degree in Computer Science, Computer Engineering or related field.

• Introductory knowledge of or experience with offensive security and penetration testing (e.g. capture the flags, hack the box, etc.)

Desired Skills

• Experience with additional programming languages, including