Horizon3.ai jobs

Horizon3.ai, a remote cybersecurity company, is hiring a Principal Backend Engineer to serve as Technical Lead for their RBVM (Risk-Based Vulnerability Management) product and supporting services. You'll own the end-to-end technical vision and architecture while splitting time 50/50 between hands-on coding and architectural design, partnering with Product, Design, and cross-functional teams to translate business goals into scalable backend systems. Required experience includes deep expertise in software architecture and distributed systems, strong technical leadership as a senior IC or tech lead, backend development in Go, Rust, Python, Java or similar, SQL and relational databases in production, and cloud-native development (AWS, GCP, or Azure) with Docker. The base salary ranges from $213,000–$273,000 plus equity (stock options), and the role is fully remote with up to 10% travel for team meetings and company offsites. A key stand-out is that this is a critical growth inflection point where you'll help shape longer-term technical direction with broader company impact; preferred qualifications include vulnerability management or security analytics domain experience and familiarity with graph databases or ETL pipelines.

Horizon3.ai, a fast-growing remote cybersecurity company, is seeking a Manager to lead its global IT support function. This hands-on leadership role oversees day-to-day help desk support, endpoint and identity administration, onboarding/offboarding, and end-user issue resolution across a distributed, remote-first organization. Key responsibilities include leading and developing the help desk team, managing ticket flow and escalations, overseeing endpoint management and Okta identity administration, improving support processes and documentation, and partnering with Security and Engineering teams to align support with company standards. Required experience includes 6+ years in IT support or IT operations, 2+ years leading support professionals, deep knowledge of Okta, MDM platforms, ticketing systems, and endpoint management tools, and demonstrated ability to build metrics and reporting around help desk performance. Horizon3.ai is a fusion of former U.S. Special Operations cyber operators and startup engineers committed to a culture of respect and collaboration; the role offers a base salary of $149,850–$185,000 plus equity, along with health insurance, flexible vacation, and generous parental leave. The ideal candidate brings experience scaling support in high-growth environments while remaining hands-on, with a strong customer-service mindset and ability to drive process improvements in a remote-first setting.

Horizon3.ai, a fast-growing remote cybersecurity company, is seeking a Director of Pentest Platform to lead the strategy, design, and development of the core infrastructure powering NodeZero's autonomous penetration testing capabilities. You'll manage four engineering teams responsible for pentest execution, orchestration, workflow coordination, and analytics across complex enterprise environments, and play a key role in scaling the platform organization. Key responsibilities include setting technical direction for distributed pentest execution, partnering with Product and GTM teams on platform requirements, staying hands-on with architectural decisions around data models and orchestration, mentoring technical leads, and fostering collaboration across engineering and product. You'll need proven experience leading and scaling engineering teams in platform/infrastructure at startups or growth-stage companies, strong technical background in distributed systems, containerization, orchestration frameworks, and data pipelines, plus demonstrated success taking platform products from concept to market. Required tech stack includes deep expertise in distributed systems design, proficiency in Python/Go/C++/C#, Kubernetes/Docker, workflow orchestration tools (Airflow, Temporal), data pipeline design, cloud infrastructure (AWS/Azure/GCP), and ideally experience with penetration testing or security assessment platforms. Horizon3.ai offers a competitive salary of $280,000–$315,000 plus equity in stock options, health/dental/vision insurance, flexible vacation, and generous parental leave for a fully remote role with up to 10–15% travel; the standout detail is this role requires deep understanding of both large-scale distributed systems architecture and penetration testing fundamentals, making it ideal for someone bridging infrastructure and security expertise.

Manager, Security Engineering role at Horizon3.ai leading Cloud & AppSec teams. Responsible for securing cloud environments (AWS/Azure/GCP), implementing security controls, embedding security into SDLC, and leading a team of cloud and application security engineers. Remote US-based, full-time management position.