Senior Software Engineer, Platform Security
Decagon · San Francisco
About this role
## About Decagon Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Our technology enables industry-defining enterprises like Avis Budget Group, Block’s Cash App and Square, Chime, Oura Health, and Hunter Douglas to deploy AI agents that power personalized, deeply satisfying interactions across voice, chat, email, SMS, and every other channel. We’re an in-office company driven by excellence and velocity, backed by world-class investors including a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures. ## About the Team The **Security Engineering** team at Decagon protects the platform that powers advanced conversational AI agents for enterprise customers across voice, chat, email, and SMS. This role sits at the intersection of **Security and Infrastructure**—with a focus on paved paths, strong SLAs, and high-quality systems that other engineers can rely on by default. ## About the Role We’re hiring our **founding Platform Engineer, Security** to design, build, and operate the security infrastructure that powers Decagon’s AI platform. This is a builder’s role: you’ll create durable, well-engineered systems including secure “golden paths” for service creation, security tooling that automatically applies secure configurations, and infrastructure-as-code that makes it easy for every engineer to do the right thing. As the first dedicated engineer at this intersection, you’ll have outsized impact on how security infrastructure is built here and shape the technical direction of the infrastructure security program. ## What You’ll Do - Design and implement **secure, multi-tenant infrastructure** that isolates customer data while enabling efficient AI model serving across the platform. - Build **“golden paths” for security** (service templates, libraries, Terraform policies, and automation) so new services are secure and production-ready by default. - Own **infrastructure-as-code (Terraform)** and **GitOps** best practices, including reusable modules and **policy-as-code**. - Expand and help operate the platforms behind **alerting and detection**.
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