Senior Frontend Engineer, AI Observabilty Platform
About this role
Developing new user-facing features using React and TypeScript, building reusable components, and optimizing performance across browsers form the core of daily work for this Senior Frontend Engineer. The LangSmith team at LangChain builds the platform for observability, evaluation, and production reliability of AI systems, giving this person direct ownership over enterprise features for LLM application testing and debugging.
This position exists to scale the user interface for an enterprise product used by thousands of active customers and major companies like Klarna, Coinbase, and Nvidia. Ideal candidates bring extensive front-end engineering expertise, a strong ownership mindset, and the ability to thrive in a fast-paced startup environment while collaborating closely with backend engineers and UX designers.
What you will do
- Develop new user-facing features using React and 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 need
- Extensive 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.
- Strong computer science fundamentals, ideally with a degree in computer science or a related field.
Benefits
- Medical, dental, and vision coverage
- Flexible vacation
- 401(k) plan
- Meals on in-office days in the US
Skills and tech stack
Questions candidates ask
Where is the role located?
This role is onsite in Boston, MA.
What is the salary range for the position?
The annual salary range is $175,000-$240,000 USD.
What benefits are included?
Benefits include medical, dental, and vision coverage, flexible vacation, a 401(k) plan, and meals on in-office days in the US.