Senior AI Researcher

Assail is a company focused on autonomous offensive security, developing a platform called Ares to identify vulnerabilities in production systems. They are seeking a Senior AI Researcher to lead original research on offensive security agents, design experiments, and contribute to the development of their AI models.

Responsibilities:

• Drive original research on offensive security agents — reasoning, planning, tool use, and autonomous long-horizon operation
• Advance Dagger's post-training pipeline: supervised fine-tuning, RL from verifier signals, LoRA adaptation, and evaluation against adversarial benchmarks
• Extend Javelin's co-evolutionary self-training architecture: curriculum design, self-play dynamics, and reward modeling for security-specific outcomes
• Design and execute experiments end-to-end, from hypothesis through writeup
• Build internal evaluation harnesses that measure capability rigorously, where no public benchmark exists
• Translate research into production handoffs to AI Engineering — model cards, deployment notes, and known failure modes
• Contribute to Assail's external research voice through papers, talks, responsible disclosures, and technical writing
• Collaborate with engineering teammates on research methodology and experimental design