Senior Backend Engineer (Growth Engineering)

LangChain, founded in early 2023, is revolutionizing the development of context-aware reasoning applications through their open-source framework for LLM-powered applications. Their commercial platform, LangSmith, has gained the trust of industry giants like Airbnb, ByteDance, Klarna, Google, Meta, and Home Depot, along with 100+ enterprise customers. Backed by prestigious VCs Benchmark and Sequoia, they've achieved 10x revenue growth last year.

We're seeking a Senior Backend Engineer to join our Growth Engineering team in a pivotal role that will shape our product's growth, monetization, and enterprise adoption. This is a ground-floor opportunity to join a newly formed team where you'll have significant influence on technical direction and architecture. You'll work on sophisticated challenges like implementing attribute-based access control, enabling OAuth token flows, creating scalable event delivery systems, and developing robust audit logging frameworks.

The role demands a strong technical background with 5+ years of experience, expertise in Go or Python, and deep knowledge of database systems like Postgres and Redis. You'll be responsible for leading technical architecture, mentoring team members, and driving aggressive project timelines while maintaining high engineering standards. The position offers competitive compensation ($165,000-$195,000) and equity, reflecting the role's importance in our growth strategy.

Working from our offices in New York City, San Francisco, or Boston, you'll collaborate closely with cross-functional teams and key enterprise customers. This role is perfect for someone who combines technical excellence with strong communication skills and thrives in a fast-paced, iterative environment where your work directly impacts company growth and revenue.