Senior Fullstack Engineer, AI Observability & Evals Platform
$175k - $240k • Boston, MA • FullTime
Posted 1mo ago
Job Location
Boston, MA
Tech Stack
Remote Work Policy
On-site
Employment Type
FullTime
Categories
AI Engineer
About the job
LangChain is seeking a Senior Fullstack Engineer to join the LangSmith team, which builds the core platform for observability, evaluation, and production reliability of AI systems. This role offers the opportunity to shape the technical direction of the platform, working closely with enterprise customers, developer end-users, and internal stakeholders. You will lead the technical architecture and implementation of key product features, collaborating with product and design teams, and driving aggressive project timelines while maintaining high engineering standards. The position emphasizes writing clean, maintainable, and well-tested code, with a "get stuff done" attitude and strong ownership mindset.
Responsibilities
- Lead the technical architecture and implementation of key product features for LangSmith across the Go, Python, and Typescript stack.
- Collaborate with product and design teams to iterate on new features.
- Drive aggressive project timelines while ensuring high engineering standards.
- Write clean, maintainable, and well-tested code.
- Ship fast and iterate based on user feedback.
- Communicate effectively with internal stakeholders and engage directly with top-tier customers.
Requirements
- 5+ years of experience in software engineering working on complex platform products.
- Fullstack engineering experience with Go or Python on the backend and React + Typescript on the frontend.
- Strong understanding of database systems, particularly Postgres and Redis.
- Experience designing and scaling APIs, preferably in a high-performance, data-intensive application.
- Comfortable shipping fast and iterating based on user feedback.
- Strong communicator with the ability to collaborate closely with various internal stakeholders and engage directly with customers.
- Strong ownership mindset.
- Experience with AI/LLM-powered applications, developer tools, or observability platforms is a bonus.
Benefits
- Medical, dental, and vision coverage
- Flexible vacation
- 401(k) plan
- Meals on in-office days
- Meaningful equity
- Variable compensation