Horizon3AI
Principal Software Engineer, Autonomous Defense
$255K–$300K
US, Remote · Remote · Principal · Full-time · Posted Sep 14, 2026
- Experience
- 10+ years of professional software engineering experience.
- Education
- Bachelor’s Degree in Computer Science, Computer Engineering or related field.
About the job
Leads hands-on technical development of NodeZero’s defensive agents, translating proven attack paths into continuous remediation while connecting AI research with platform engineering.
What you'll do
- Own the technical vision and roadmap; write production code, review designs and code, and mentor engineers without direct people management.
- Design agent execution, authorization, multi-tenant isolation, third-party connectors, and observability for defensive systems.
- Partner with AI researchers and Product to translate research and product goals into sequenced, production-ready work.
What they ask for
- Bachelor’s degree in Computer Science, Computer Engineering, or a related field.
- 10+ years of professional software engineering experience in modern object-oriented or functional languages.
- Experience building cloud applications using platforms such as AWS, Azure, or GCP and container technologies such as Docker and Kubernetes.
- Production experience with agentic or LLM-backed systems; expert SQL proficiency; distributed-systems operations and production-service/on-call ownership.
Nice to have
- Experience with durable execution or workflow engines, multi-tenant platforms with hard isolation, or normalized integrations for third-party APIs.
- Familiarity with security control-plane APIs, PostgreSQL, Neo4j, or GraphQL backends.
Pay
$255,000-$300,000 annually (USD, base salary)
Tools
Python, Go, Scala, C++, TypeScript, AWS, Azure, GCP
AI focus
Leads the platform engineering for defensive agents in collaboration with AI researchers; builds and operates agentic or LLM-backed systems, including safe authorization and explainable behavior.
Model-written summary · the original posting is authoritative