# Principal Software Engineer, AI Observability & Evals Platform

Hiring organization: [LangChain](https://career.thegoodapps.co/organizations/langchain)

Canonical page: https://career.thegoodapps.co/jobs/06aa6fc3-cff4-4106-a8cd-fcd916229dca

Listed on LangChain's own careers site. Applications go to them directly.

- Seniority: Principal
- Location: Boston, MA
- Salary: 230000 – 270000 USD per year

## Summary

Principal-level engineer leading technical direction across LangChain's observability and evaluation platform. Suited for someone with 10+ years building complex production systems who thrives at the intersection of hands-on architecture work and mentoring engineers at scale.

_Our summary, not LangChain's wording._

## Skills named

Amazon Web Services (AWS), ClickHouse, Go, Microsoft Azure, PostgreSQL, Python, React, Redis, TypeScript

## Required

- 10+ years professional experience in backend or fullstack engineering on complex production systems
- Strong programming across backend (Python and/or Go) and frontend (TypeScript, React, or similar)
- Demonstrated experience making and owning architectural decisions with tradeoffs around data systems, APIs, and service reliability
- Experience with high-throughput or mission-critical systems and optimization for performance and reliability
- Track record of taking systems from prototype to production and operating them at scale
- Demonstrated mentoring of engineers and raising technical quality of teams
- Strong cross-functional communication and collaboration with product, design, and engineering leadership
- Customer-centric ownership mentality

## Nice to have

- Experience with database systems (Postgres, Redis, ClickHouse)
- Experience with cloud platforms (AWS, GCP, Azure)
- Familiarity with observability tooling, evaluation frameworks, or AI/LLM infrastructure

Apply on LangChain's site: https://jobs.ashbyhq.com/langchain/d3f8de08-2e2b-4c3f-be1f-e63ca51f1d93/application