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# Security Engineer

- **Company:** Langchain, Inc
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Salary:** $175,000 - $215,000
- **Contract:** Permanent contract
- **Skills:** LangGraph Framework, Kubernetes Security, Artificial Intelligence, Software as a Service, Code Review, Computer Networks, Identity and Access Management, Python (Programming Language), Key Management, Network Segmentation, OpenID, Software Tools, Zero Trust Network Access, Security Assertion Markup Language (SAML), TypeScript, Policy as Code, Software Security, LangSmith, Kubernetes, Terraform
- **Published:** November 13, 2026
- **Apply:** https://startup.jobs/application-security-engineer-langchain-10761688

## About the Role

* 5+ years in security engineering with strong software skills (Python or Go; TypeScript a plus).
 * Depth in cloud/Kubernetes security (e.g., GCP/AWS IAM, workload identity, admission controls, network policies).
 * Hands-on AppSec: code review, threat modeling, secure design, secrets & key management, authn/z patterns, multi-tenant isolation.
 * Experience building detection & response and running incident management.
 * Familiarity with supply-chain security (SBOM, sigstore/cosign, SLSA-style controls) and dependency risk management.
 * Clear, pragmatic communication with engineers and customers.

Nice to have

 * Security for SaaS + self-hosted offerings, including air-gapped deployments.
 * Exposure to SOC 2 / ISO 27001 programs and evidence automation.
 * Experience with Go services and Infra as Code (Terraform/Helm), plus policy-as-code (OPA/Gatekeeper/Kyverno).
 * Knowledge of privacy patterns (data minimization, retention, masking, workspace scoping)..

## Description

You'll be the hands-on security lead embedded with core product teams to secure agentic workloads end-to-end, from SDK through LangSmith/Graph services and customer integrations. You'll define our security roadmap, land immediate hardening wins, and raise the bar on how AI infra is protected in production.

 * Own product & platform security: Design and drive application/infrastructure security controls across LangSmith, LangGraph, and the LangChain SDK ecosystem (Python/TS/Go).
 * Secure-by-default authN/Z: Evolve SSO/SAML/OIDC/SCIM, token lifecycles, service-to-service auth, and tenant isolation for cloud and self-hosted customers.
 * Ship code & reviews: Land secure designs, write PRs, and introduce lightweight checks (linters, dependency/supply-chain scanning, SBOM/SLSA provenance).
 * Hardening & operations: Network segmentation/Zero Trust, Kubernetes posture, secrets management, key rotation, least-privilege IAM, egress controls.
 * Incident readiness: Develop IR runbooks, detection rules, and tabletop exercises; lead post-incident forensics and blameless RCAs.
 * Vuln management: Own scanning/triage/patch SLAs; coordinate with engineering to remediate quickly without slowing delivery.