Senior Full Stack Engineer, Observability & Evals Platform
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About LangChainEnsure you read the information regarding this opportunity thoroughly before making an application.At LangChain, our mission is to make intelligent agents ubiquitous. We help developers build mission-critical AI applications across the entire agent development lifecycle. Our open source frameworks — LangChain and LangGraph — see over 70+ million downloads per month. Developers rely on LangChain for composable integrations and LangGraph for controllable agent orchestration. Our commercial agent platform, consisting of LangSmith and LangGraph Platform, enables teams to build, test, run, and manage agents at scale across their organization.Founded in 2023, LangChain powers top engineering teams at companies like Replit, Lovable, Clay, Klarna, LinkedIn, and more.About the role:In person 5 days/week in San FranciscoWe're looking for a Senior Full Stack Engineer for our commercial product LangSmith, an observability and evals platform. In this role, you'll have the opportunity to shape the technical direction of our platform while working closely with enterprise customers, developer end-users and internal stakeholders.Lead the technical architecture and implementation of key product features for LangSmith, working across our entire Go, Python, and Typescript stack.Collaborate closely with product and design teams to iterate on new features.Mentor and guide more junior members of the team. Drive aggressive project timelines while ensuring high engineering standards are being met.Lead by example in writing clean, maintainable, and well-tested codeHow to be successful in this role7+ years of experience in software engineering working on complex platform productsFullstack engineering experience with Go or Python on the backend and React + Typescript on the frontend.Strong understanding of database systems, particularly Postgres and RedisExperience designing and scaling APIs, preferably in a high-performance, data-intensive applicationA "get stuff done" attitude - comfortable shipping fast and iterating based on user feedbackStrong communicator with the ability to collaborate closely with various internal stakeholders and engage directly with our top-tier customersStrong ownership mindsetBonus: Experience with AI/LLM-powered applications, developer tools, or observability platformsCompensation & BenefitsCompetitive salary and equity stake for role and stage of company. xmcpwfu Commensurate with experience.Annual salary range: $165,000-$198,000 USD