Senior Engineering Manager, Clients Team

Horizon3 AI

2d•$260,000 - $280,000•Remote

About The Position

Horizon3.ai is a fast-growing, remote cybersecurity company dedicated to the mission of enabling organizations to proactively find and 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 ITOps/SecOps teams, consulting pentesters, and MSSPs and MSPs. We are a fusion of former U.S. Special Operations cyber operators, startup engineers, and formerly frustrated cybersecurity practitioners. We're committed to helping solve our common security problems: ineffective security tools, 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.

Requirements

Demonstrated expertise leading teams that design, build, and operate containerized software (Docker, virtual machine images) deployed into on-premise or customer-managed environments.
Experience implementing robust software supply chain practices, ensuring secure and reliable updates to distributed edge agents or runners.
Able to partner with and influence peer engineering and security research teams to ensure the runner seamlessly executes autonomous pentests.
Experience building or significantly growing an engineering team—including hiring, onboarding, and establishing engineering norms tailored for shipped software.
Proven ability to define and instill engineering culture: rigorous code review standards, robust testing for varied customer environments, and a strong culture of ownership.
Drives high-impact architecture decisions rigorously—requires design documents, runs structured reviews, builds consensus, and ensures decisions account for customer environment variables.
Proficient in Go, Python, or C++.
Strong understanding of Linux OS-level operations, container runtimes, and networking in corporate environments.
Competent in troubleshooting and diagnosing issues in opaque, customer-controlled environments.
Familiarity with CI/CD pipelines specifically designed for building and signing container images.

Nice To Haves

Exposure to cybersecurity, pentesting tools, or vulnerability remediation.
Experience with cross-platform agents (Windows/Linux) and endpoint telemetry.

Responsibilities

Lead the Client team, which is responsible for the software shipped into customer environments to enable our offensive and defensive operations.
Manage CI/CD Workflows and Runner Updates: Lead the end-to-end workflows to create, update, and reliably deploy the NodeZero runner, a container image shipped to customers for running internal pentests.
Ship Software to Customer Environments: Spearhead the development of new shipped software aimed at helping customers proactively tune their defenses and seamlessly remediate vulnerabilities.
Team Building: Build, mentor, and grow a team of strong engineers who have deep experience shipping, operating, and maintaining software in diverse customer environments.
Act as a Product Owner: Collaborate with product managers, security researchers, and customer success teams to manage the roadmap of client-side initiatives.