Senior Engineering Manager, Horizon3
Site Reliability
$260-280k
Offers equity in the form of stock options
More information about location
Autonomous security solutions
Be an early applicant
Autonomous security solutions
201-500 employees
Be an early applicant
$260-280k
Offers equity in the form of stock options
More information about location
201-500 employees
Company mission
To help find and fix attack vectors before attackers can exploit them.
Role
Who you are
- Demonstrated experience leading hiring and growing SRE or Infrastructure teams. Experience leading or building SRE functions, including incident management processes, on-call programs, SLO/SLA definition, and operational runbooks
- Previous career experience as a Site Reliability Engineer. Comfortable in being hands-on while you grow and hire your team
- Deep hands on experience with observability: application performance management, logs and traces, and golden signals and service-specific metrics
- Experience in selecting and deploying incident management tooling (e.g., PagerDuty, FireHydrant,etc.) and creating decision making frameworks for vendor selection
- Strong working knowledge of at least one major cloud provider (AWS, GCP, or Azure) — infrastructure, networking, managed services, IAM, cost management. AWS preferred
- Experience in design practices like architecture decision records or RFCs in the infrastructure or platform engineering context
- Able to write clear, durable process documentation that engineering teams can adopt
- Experience in providing education and training on runbook development, on-call expectations, incident investigations, and running effective postmortems
- Ability to engage with Product and Engineering leaders to define SLOs and drive culture of ownership across teams
- Proven ability to hire, develop, and retain high-performing engineers and engineering managers in remote or distributed environments
- Proven skills in managing a backlog of strategic roadmap initiatives and a competing stream of operational needs against capacity constraints
- Strong communication skills across technical and non-technical audiences
- Proven ability to to build, scale, and retain high performing engineering teams in remote or distributed environments
What the job involves
- We are looking for an engineering leader to build and lead the Site Reliability function at Horizon3
- This leader is expected to hire a team and establish a Site Reliability function to define and drive investments in operational excellence to ensure Horizon3’s product and service offerings meet customer and business expectations
- Build a SRE team, from scratch. Hire experienced site reliability staff and build a team of 4-6 in year one
- Professionalize incident management. Define and document incident processes and practices for your SRE team and for the application feature teams. Make tool and vendor decisions to support processes
- Drive incident professionalism and reliability culture across the engineering organization through training and process adoption
- Use design reviews, code reviews, and blameless retrospectives to drive a culture of quality and excellence in engineering
- Balance incident response while also executing on a roadmap of observability and reliability engineering initiatives
- Hire and directly manage site reliability engineers
- As a Manager, you will be responsible for:
- Recruiting and onboarding talented individuals to support our organizational goals
- Mentoring, coaching, equipping, and developing your team
- Recognizing and retaining high performers
- Leading horizontally with peer Management & Senior Leaders
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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