Senior Engineering Manager, Horizon3
Clients Team
$260-280k
Additional compensation: All full-time roles are eligible for an equity package in the form of stock options
Autonomous security solutions
Job no longer available
Autonomous security solutions
201-500 employees
Job no longer available
$260-280k
Additional compensation: All full-time roles are eligible for an equity package in the form of stock options
201-500 employees
Company mission
To help find and fix attack vectors before attackers can exploit them.
Role
Who you are
- 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
Desirable
- Exposure to cybersecurity, pentesting tools, or vulnerability remediation
- Experience with cross-platform agents (Windows/Linux) and endpoint telemetry
What the job involves
- You will 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
- Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee. Duties, responsibilities, and activities may change at any time with or without notice
Application process
- In any materials you submit, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. You will not be penalized for redacting or removing this information
Our take
In an era marked by escalating cyber threats and data breaches, safeguarding digital assets has become a high priority across all industries. Amid this landscape, Horizon3.ai stands out as an autonomous security solution by addressing the critical need for robust cybersecurity.
At the heart of Horizon3.ai's mission is NodeZero™, a platform designed to elevate proactive security measures. Using this, customers can verify their security posture and identify potential vulnerabilities through self-service. This proactive approach to cybersecurity effectively thwarts potential exploits and ensures the integrity of their digital infrastructure.
With 2025 funding in hand, the company is poised to further its ambition to develop into an industry-leading cybersecurity company. The infusion of funds will be channelled towards expanding its partner network, refining its offerings and entering the US government market. Horizon3 aims to establish itself as a pivotal player in the evolving autonomous security landscape, a highly lucrative market valued at $80 billion.
Kirsty
Company Specialist at Welcome to the Jungle
Insights
-8% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Jun 2025
$100m
SERIES D
Aug 2023
$40m
SERIES C
Total funding: $187m
Company benefits
- 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
- Flexible Work Environment: Enjoy the convenience and work-life balance that comes with remote work
- Inclusive and Diverse Team: We value diversity and promote an inclusive culture where everyone can thrive
Company HQ
SoMa, San Francisco, CA
Leadership
Snehal Antani
(Co-Founder & CEO)Graduated from the Rensselaer Polytechnic Institute with an MS in Computer Science. Previously worked at IBM as a Lead Architect, at GE Capital as the CIO of Distribution Finance and Splunk as the SVP & GM of Business Analytics & IoT.
Anthony Pillitiere
(Co-Founder)Graduated from the University of Maryland with a Bachelor's Degree in Computer Systems Networking and Telecommunications. Previously worked at the United States Air Force in multiple roles, including Deputy Chief Technology Officer.
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