Build and own agentic application-security workflows that find, fix, and verify vulnerabilities. Responsibilities include designing agent loops, tool layers, context engineering, evaluation harnesses, APIs, microservices, CLI tooling, and integrations with GitHub, GitLab, CI systems, IDEs, and agent runtimes. The role also contributes to core platform services using Kotlin, Java, Rust, gRPC, Postgres, Docker, Kubernetes, and Gradle. This is an onsite Denver position requiring substantial production agent-system experience and 6+ years building SaaS software.