Senior Backend Engineer, Horizon3
Security Controls
$187.9-208.8k
+ Equity
Up to 5% of travel
Autonomous security solutions
Be an early applicant
Autonomous security solutions
201-500 employees
Be an early applicant
$187.9-208.8k
+ Equity
Up to 5% of travel
201-500 employees
Company mission
To help find and fix attack vectors before attackers can exploit them.
Role
Who you are
- Ability to own and manage concurrent initiatives, demonstrating effective judgment in prioritization and time management
- Driven, self-managed, capable of conceiving and implementing solutions on your own and with a team
- A strong desire to continuously improve and learn new technologies in a fast-paced Agile development environment
- Excellent analytical and problem-solving skills, effective communication, attention to detail and high-quality work
- Strong technical documentation ability to support the development process
- Effective communication and collaboration with designers, developers, and product managers
- Ability and interest in mentoring junior and mid-level engineers to foster their growth and development
- Bachelor's Degree in Computer Science, Computer Engineering or related field
- 7+ yrs professional software engineering experience using modern object-oriented or functional languages (Python, Java, Go, Scala, C++, TypeScript, etc)
- Experience building applications on cloud computing platforms such as AWS, Azure, GCP, using container technologies such as Docker and Kubernetes
- Expert proficiency in SQL
Desirable
- Deep familiarity with at least one major EDR platform (CrowdStrike, SentinelOne, Microsoft Defender) at the telemetry and API level
- Understands detection logic, alert triage workflows, and how SOC teams consume EDR output
- Expert proficiency in SQL and experience with various database architectures including relational (PostgreSQL) and graph (Neo4j)
- Experience building GraphQL backends
What the job involves
- As a Senior Backend Engineer on the Security Controls team, you'll drive the technical vision for EDR telemetry and detection inside NodeZero, with direct influence over how EDR effectiveness and tuning evolves as a core product capability
- Modern endpoints are instrumented by CrowdStrike, SentinelOne, Microsoft Defender, Carbon Black, and others
- Our customers need to know, with evidence, which of our attack techniques their EDR caught, which ones slipped through, and why
- Answering that at scale — across platforms, tenants, and operator objectives — requires someone who deeply understands the telemetry surface and can turn that understanding into a product
- Over time, this role will own the technical work for incorporating AI and ML research into how we reason about detection gaps, generate tuning recommendations, and scale effectiveness insights
- Develop core product features in ETL (Extract, Transform, Load) and GraphQL to support data processing and retrieval
- Design and implement backend APIs in GraphQL to facilitate data interactions between different components of the product
- Build and maintain ETL pipelines for efficient data processing and analytics
- Collaborate with frontend team members to present data in a clear and user-friendly format, enhancing the product's user experience
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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