Hiring: Staff Software Engineer, Defensive Agent Company: Horizon3.ai Location: United States Job Posted Time: 2026-09-15 13:21:54 Employment Type: Full-time / Remote Target Skills & Keywords : AWS, Azure, C++, Docker, GCP, GraphQL, IAM, Kubernetes, LLM, MVP, Neo4j, PostgreSQL, Python, Rust, SIEM, SQL, Scala, TypeScript About the job Experience: •7+ yrs professional software engineering experience using modern object-oriented or functional languages. •Deep experience with agentic or LLM-backed systems in production with a clear-eyed view of where they fail and how to contain it. •Demonstrated experience designing and operating distributed systems in production: asynchronous workflows, queues, retries, idempotency, and partial failure. •A track record of shipping and operating production services, including on-call ownership. Required Skills: •You'll set direction alongside our AI researchers, who define what the agents should reason about, and lead the engineers who build the platform underneath them. Over time this role owns the technical strategy for how autonomous remediation becomes a core NodeZero product capability rather than a set of recommendations in a report. •Leadership & Team Development •Owns the end-to-end technical vision for the workstream and rallies the team around it — from blank doc through shipping, iterating, and deprecating. •Production code contributions at Lead/Staff level in a modern backend language (Python, Go, Rust, or similar) in a service-oriented environment. •Sets and raises the technical bar (design reviews, code quality, operational discipline) by example rather than by mandate. •Mentors and enhances the engineers around them; builds the frameworks and architecture for others to do the best work of their careers. •Holds the team accountable to outcomes rather than activity; surfaces risks and tradeoffs early and in writing. •Serves as the durable technical interface between AI research and platform engineering, so research direction accounts for platform constraints early rather than at handoff. Qualifications: •Bachelor's Degree in Computer Science, Computer Engineering or related field. Compensation: •$229,000 - $270,000 / year •Flexible work environment (work from home / hybrid options) •Competitive Compensation: We offer competitive salary, equity and benefits Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!