Senior Backend Engineer, Enterprise Readiness & Identity

About UsAt LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale.With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we’re at a stage where we’re continuing to develop new products, growth is accelerating, and all team members have meaningful impact on what we build and how we work together. LangChain is a place where your contributions can shape how this technology shows up in the real world.Today, our platform includes LangSmith (Observability, Evaluation, Deployment, Fleet, and Sandboxes), our open source frameworks (LangChain, LangGraph, and Deep Agents), and the newly launched LangSmith Engine for autonomous agent improvement. We have 100M+ monthly open source downloads, 6,000+ active LangSmith customers, and 5 of the Fortune 10 use LangSmith in production (+ 35% of the Fortune 500 overall), including teams at Klarna, Clay, Coinbase, Workday, Lyft, Cloudflare, Harvey, Rippling, Vanta, LinkedIn, Monday.com, Nvidia, and Bridgewater.About the TeamThe Enterprise Readiness team builds the systems that allow large organizations to securely adopt and scale LangChain in production. The team focuses on identity, authentication, authorization, billing, compliance, and tenant management to ensure our platform meets the security and operational requirements of enterprise customers.About the RoleLangChain is hiring a Senior Backend Engineer focused on Enterprise Readiness & Identity to build the features that make our platform secure, compliant, and scalable for enterprise customers.This is a high-impact role on a newly formed team working at the intersection of authentication, authorization, billing, security, compliance, and tenant management. You’ll collaborate closely with infrastructure, product, GTM teams, and our largest enterprise users to shape the foundation of our enterprise offerings.Location: In-person 5 days/week in New York City, San Francisco, or Boston.What You'll DoDesign and implement backend services (Python/Go) powering enterprise authentication, authorization, billing, and tenant provisioningBuild and evolve systems for SAML, SCIM, OAuth2, and single sign-on (SSO) integrationsDevelop robust role-based and attribute-based access control systems (RBAC/ABAC) at organizational scaleBuild and scale billing infrastructure including invoicing, usage-based charging, and flexible pricing model supportImplement audit logging, usage tracking, and metering pipelines to support compliance and billing accuracyOptimize enterprise onboarding and tenant lifecycle management for reliability and scalabilityCollaborate with security and compliance teams to support SOC2, GDPR, and other regulatory requirementsPartner with infrastructure engineers to ensure identity and enterprise features are performant, reliable, and observableEngage directly with enterprise customers to translate requirements into secure, scalable platform capabilitiesWrite clean, maintainable, and well-documented backend codeWhat You'll BringTechnical experience5+ years of backend engineering experience with Python or Go (both preferred)Deep knowledge of authentication and identity standards including OAuth2, SAML, JWTs, and SCIMExperience building and scaling access control systems such as RBAC or ABAC frameworksExperience building billing or usage infrastructure in SaaS environmentsFamiliarity with Postgres, Redis, APIs, and modern distributed backend infrastructureEnterprise systems experienceComfort navigating enterprise security, compliance, and multi-tenant architecturesPrior experience building enterprise-grade SaaS platforms or developer platformsWorking styleStrong ownership mindset and ability to thrive in fast-paced, unstructured startup environmentsNice to HaveBackground in security, observability, or developer infrastructureFamiliarity with LLMs, GenAI applications, or agentic frameworksCompensationAnnual salary range: $175,000- $240,000Compensation Philosophy:We offer competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks. Actual compensation and offerings will vary based on role, level, and location. Team members in the EU, UK, and APAC receive locally competitive benefits aligned with regional norms and regulations.BenefitsBenefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, meals on in-office days in the US and more.