LangChain
Senior Frontend Engineer, Observability & Evals Platform (LangSmith)
LangChain, New York, New York, us, 10261
Senior Frontend Engineer, Observability & Evals Platform (LangSmith)
About LangChain
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.
About the role
We’re looking to add a frontend engineer to develop and enhance new features on LangSmith, working on our enterprise platform product for LLM application observability, testing, and debugging.
Responsibilities
Develop new user‑facing features using React & Typescript
Build reusable components and front‑end libraries for future use
Translate designs and wireframes into high‑quality code
Optimize components for maximum performance across a vast array of web‑capable devices and browsers
Collaborate with fullstack and backend developers and UX/UI designers, to enhance usability
Qualifications
Front‑end engineering experience with strong proficiency in React, JavaScript, and TypeScript
Hands‑on experience with front‑end development tools like Babel, Vite, Webpack, NPM, and Yarn
Familiarity with REST APIs and experience working closely with fullstack and backend engineers
Knowledge of modern authorization mechanisms, such as JWTs
A passion for user experience, design and building clean, engaging, intuitive interfaces
Strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non‑technical stakeholders
The DNA to thrive in a start‑up, fast‑paced environment. Views unstructured environments as an opportunity to figure out the most impactful work and help define the future success of the company
An ownership mind‑set. You are self‑driven and look for opportunities to make an impact.
Strong computer science fundamentals, ideally with a degree in computer science or related field
Compensation & Benefits
Competitive salary and equity stake for role and stage of company. Commensurate with experience.
Annual salary range: $155,000–$195,000 USD
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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.
About the role
We’re looking to add a frontend engineer to develop and enhance new features on LangSmith, working on our enterprise platform product for LLM application observability, testing, and debugging.
Responsibilities
Develop new user‑facing features using React & Typescript
Build reusable components and front‑end libraries for future use
Translate designs and wireframes into high‑quality code
Optimize components for maximum performance across a vast array of web‑capable devices and browsers
Collaborate with fullstack and backend developers and UX/UI designers, to enhance usability
Qualifications
Front‑end engineering experience with strong proficiency in React, JavaScript, and TypeScript
Hands‑on experience with front‑end development tools like Babel, Vite, Webpack, NPM, and Yarn
Familiarity with REST APIs and experience working closely with fullstack and backend engineers
Knowledge of modern authorization mechanisms, such as JWTs
A passion for user experience, design and building clean, engaging, intuitive interfaces
Strong written and oral communication skills, with the ability to explain technical concepts clearly and concisely to both technical and non‑technical stakeholders
The DNA to thrive in a start‑up, fast‑paced environment. Views unstructured environments as an opportunity to figure out the most impactful work and help define the future success of the company
An ownership mind‑set. You are self‑driven and look for opportunities to make an impact.
Strong computer science fundamentals, ideally with a degree in computer science or related field
Compensation & Benefits
Competitive salary and equity stake for role and stage of company. Commensurate with experience.
Annual salary range: $155,000–$195,000 USD
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