LangChain is looking to hire a Senior Backend Engineer focused on Enterprise Readiness & Identity to build features that make their platform secure, compliant, and scalable for enterprise customers. This role will focus on the intersection of authentication, authorization, billing, security, compliance, and tenant management to shape the foundation of their enterprise offerings.
Requirements
- 5+ years backend engineering experience with Python or Go (both preferred)
- Deep knowledge of authentication and identity standards (OAuth2, SAML, JWTs, SCIM)
- Experience building and scaling access control systems (RBAC, ABAC, permissions frameworks)
- Experience with billing and usage infrastructure in SaaS environments
- Familiarity with Postgres, Redis, APIs, and modern distributed backend infra
- Comfort navigating enterprise security, compliance, and multi-tenant architectures
- Prior experience building enterprise-grade SaaS or developer platforms
Responsibilities
- Design and implement backend services (Python/Go) powering enterprise authentication, authorization, billing, and tenant provisioning
- Build and evolve systems for SAML, SCIM, OAuth2, and single sign-on (SSO) integrations
- Develop robust role-based and attribute-based access control (RBAC/ABAC) models at org scale
- Build and scale billing infrastructure including invoicing, usage-based charging, and flexible pricing model support
- Implement audit logging, usage tracking, and metering pipelines to support compliance and billing accuracy
- Optimize enterprise onboarding and tenant lifecycle management for reliability and scale
- Collaborate with security and compliance teams to support SOC2, GDPR, and other regulatory requirements
Other
- This role is in-person 5 days/week in New York City, San Francisco, or Boston.
- Strong ownership mindset and ability to thrive in fast-paced, unstructured startup environments
- Bonus: background in security, observability, or developer infrastructure
- Bonus: familiarity with LLMs, GenAI applications, or agentic frameworks
