AI Security Engineer

AI Security Engineer on Appian's Information Security team, helping build an agentic security operations center. The engineer designs, tests and deploys AI agents that plug into the security stack, including SIEM, EDR, XDR and threat intelligence feeds, converts analyst playbooks into agent pipelines, builds RAG workflows that feed incident history and network context to models, benchmarks model cost and latency, designs handoffs that send hard cases to Tier 3 analysts, and protects the LLM architecture against prompt injection, data poisoning and tool abuse.

Appian asks for a degree in computer science or a related field with two years developing AI or ML, or a master's and one year, plus two years of Python, Go, Scala or Java. The role is on site five days a week in McLean, Virginia.