Senior Backend Engineer at LangChain

Compensation

$175,000 – $225,000/yr

Setup: Hybrid
Location: San Francisco, California
Type: Full-time
Level: Senior
Posted: Jan 8, 2026

Description

LangChain is seeking a Senior Backend Engineer to join their LangSmith team in San Francisco, Boston, MA, or New York. The successful candidate will be responsible for designing, developing, and maintaining backend services and APIs for LangChain's observability and evaluation platform. This role involves optimizing performance, ensuring system reliability, troubleshooting production issues, and collaborating with cross-functional teams.

Required Skills

Python
Go
API design
data services
high-throughput systems
mission-critical systems
database systems
Postgres
Redis
Clickhouse
cloud platforms
AWS
GCP
Azure
communication skills
cross-functional collaboration
customer centricity
ownership mentality

Additional Information

Required Previous Experiences: 5+ years of professional experience in backend engineering working on highly complex products
Preferred Qualifications: familiarity with fullstack or frontend engineering
performance tuning
debugging production issues