Senior Fullstack Engineer, AI Observability & Eval Platform

langchain; Town of Boston (NY); On-site; USD 175,000 - 240,000; Full time

Benefits offered by this job

Equity

401(k) plan

Medical insurance

In-office meals

Job summary

LangChain is seeking a Senior Fullstack Engineer to join LangSmith in Boston, MA. You will shape the technical direction of the platform, working closely with enterprise customers and internal stakeholders to deliver scalable features.

Ideal candidates have 5+ years of software engineering experience, strong Go or Python backend expertise, and React + Typescript frontend skills, with solid database knowledge (Postgres, Redis). Onsite role with competitive salary and equity potential.

Qualifications

• 5+ years of software engineering experience on complex platform products.
• Fullstack experience with Go or Python on backend and React + Typescript on frontend.
• Strong understanding of database systems, particularly Postgres and Redis.
• Experience designing and scaling APIs in high-performance data-intensive apps.
• Get-things-done mindset with ability to ship fast and iterate.

Responsibilities

• Lead the technical architecture and implementation of key product features for LangSmith across Go, Python, and Typescript stack.
• Collaborate with product and design teams to iterate on new features and improve platform performance.
• Help drive aggressive project timelines while maintaining high engineering standards.

Tools

Go

Python

React

Typescript

PostgreSQL

Redis

Job description

LangChain is seeking a Senior Fullstack Engineer to join LangSmith in Boston, MA. You will shape the technical direction of the platform, working closely with enterprise customers and internal stakeholders to deliver scalable features.

Ideal candidates have 5+ years of software engineering experience, strong Go or Python backend expertise, and React + Typescript frontend skills, with solid database knowledge (Postgres, Redis). Onsite role with competitive salary and equity potential.