Applied AI Engineer, Autonomous Defense

Description: Horizon3 is a remote cybersecurity company focused on proactive security measures to identify and fix exploitable attack vectors. The role involves building AI agents that translate offensive knowledge into defensive actions, ensuring real outcomes through closed-loop defense. Requirements: Strong ML engineering experience with deep learning, transformer models, and PyTorch. Hands-on experience with post-training large language models or designing agentic systems. Proven track record in building evaluation systems for open-ended tasks. Experience with structured, heterogeneous real-world data and strong software engineering fundamentals. Familiarity with data pipelines, distributed systems, and cloud infrastructure (preferably AWS). Master's in Computer Science, Machine Learning, or related field, plus 4+ years of professional experience. Benefits: Inclusive team culture that values diversity and promotes growth opportunities. Competitive compensation including salary, equity, and comprehensive benefits (health, vision, dental, flexible vacation policy, parental leave). Hybrid and remote work options available.