Senior Frontend Engineer, Observability & Evals Platform (LangSmith) jobs in United States
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LangChain · 1 month ago

Senior Frontend Engineer, Observability & Evals Platform (LangSmith)

positionNew York, NY
timeFull-time
remoteOnsite
senioritySenior Level
money$155K/yr - $195K/yr

LangChain is a company dedicated to making intelligent agents ubiquitous, providing platforms and frameworks for developers. They are seeking a Senior Frontend Engineer to develop and enhance features on their LangSmith platform, focusing on LLM application observability, testing, and debugging.

Agentic AIArtificial Intelligence (AI)DatabaseDeveloper APIsGenerative AI
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H1B Sponsor Likelynote

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

Qualification

ReactJavaScriptTypeScriptFront-end development toolsREST APIsUser experience passionComputer science fundamentalsCommunication skillsOwnership mindset

Required

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

Benefits

Health and dental coverage
Flexible vacation
A 401(k) plan
Life insurance

Company

LangChain

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LangChain is a platform that provides open-source frameworks and tools for engineering and deploying language model agents.
dateFounded in 2022
location
San Francisco, California, USA
people-size51-200 employees
web-link
https://www.langchain.com

H1B Sponsorship

LangChain has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (6)

Funding

Current Stage
Growth Stage
Total Funding
$160M
Key Investors
IVPSequoia CapitalBenchmark
2025-10-20Series B· $125M
2024-02-15Series A· $25M
2023-03-21Seed· $10M

Leadership Team

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Harrison Chase
Co-Founder and CEO
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Ankush Gola
Co-Founder
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Recent News

Timbr.ai
Introducing: LangChain SDK for AI Integration
2025-12-11
Geeky Gadgets
Guide Your Agent to Track Trends, Rivals, Funding, and Company Updates
2025-12-05
EIN Presswire
Large Language Model Evaluation As A Service Market to Expand at a 29.6% CAGR by 2029, Reaching US $4.88 Billion
2025-12-01
Company data provided by crunchbase