Join LangChain as a Frontend Engineer to develop user-facing features for our AI observability platform.
Posted by employer 1 month ago
First seen on Joblaze 1 month ago
Last verified on the company career page 6 hours ago
Skills & Technologies
Requirements
- Experience
- 2+ years
- Education
- Bachelor's degree
Not disclosed in this posting: visa sponsorship.
Benefits
Joblaze summary
In this role, the frontend engineer focuses on developing and enhancing user-facing features for LangSmith, the company's enterprise platform for AI application observability and debugging. Proficiency in React and TypeScript is essential, along with experience in front-end development tools and collaboration with backend teams. This position is ideal for someone with a couple of years of experience who thrives in a fast-paced startup environment and possesses a strong foundation in computer science. LangChain's growth stage and commitment to innovation provide a dynamic backdrop for impactful contributions.
Joblaze insights
- Listed about a month ago — first seen on Joblaze August 12, 2026. Last confirmed on LangChain's careers page October 9, 2026.
- Salary band is below the typical range for Frontend roles (median ~$180,000).
- Starts above 41% of 17 comparable mid frontend roles in United States that list React we track (median $160,000 across 13 companies). See React salary trends
- React appears in 79.5% of 39 comparable mid frontend roles in United States; Vite appears in 2.6% of 39 comparable mid frontend roles in United States.
Quick facts
- Is the Frontend Engineer, AI Observability & Evals Platform role remote?
- It's hybrid — LangChain expects some on-site time in San Francisco, CA.
- What's the salary range?
- LangChain lists $160,000–$195,000 for this role.
- How much experience is required?
- At least 2 years of relevant experience for this Frontend Engineer, AI Observability & Evals Platform role.
- Where is the role based?
- LangChain is hiring for this position in San Francisco, CA.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: Babel, JavaScript, NPM, React, TypeScript, Vite.
- What seniority level is this role?
- LangChain targets mid-level candidates for this position.
- Is this full-time or contract?
- Full-time for this Frontend Engineer, AI Observability & Evals Platform role at LangChain.
From the original posting
About Us
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.
*This role can be based in our San Francisco, New York, or Boston office. Employees within commuting distance work from the office five days per week. Candidates who live outside commuting distance (e.g. >1hr each way), may be eligible for hybrid arrangements depending on location and role requirements.
What You Will Do:
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
What You Will Bring:
2+ years of 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, and 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
Annual salary range: $160,000-$195,000 USD
Standard company text repeated across LangChain's postings is omitted here.