Senior Backend Engineer, Growth & Monetization bei LangChain

About LangChain

At LangChain, our mission is to make intelligent agents ubiquitous. We help developers build mission-critical AI applications across the entire agent development lifecycle. Our open source frameworks — LangChain and LangGraph — see over 70+ million downloads per month. Developers rely on LangChain for composable integrations and LangGraph for controllable agent orchestration. Our commercial agent platform, consisting of LangSmith and LangGraph Platform, enables teams to build, test, run, and manage agents at scale across their organization.

Founded in 2023, LangChain powers top engineering teams at companies like Replit, Lovable, Clay, Klarna, LinkedIn, and more.

About the role:
LangChain is hiring a Backend Engineer to build the foundational product features and integrations that power user acquisition, rapid experimentation, and self-serve expansion. This is a high-impact 0→1 role on a newly formed team responsible for building growth systems from the ground up. You’ll work closely with product, design, GTM, and analytics to streamline activation, optimize packaging, and deliver a seamless growth story for developers and enterprise customers alike. This role will be in person 5 days/week in New York City, San Francisco, or Boston.

What you will do:

• Design and build backend services and APIs in Go and Python to power growth features across the user funnel

• Develop scalable experimentation systems and backend processes capable of targeting diverse growth metrics

• Implement data pipelines, usage metering, and pricing/packaging logic for rapid iteration

• Optimize backend systems for performance, reliability, and maintainability under high-volume workloads

• Build and evolve growth levers including usage-based guardrails, smart upgrade triggers, and contextual system-driven CTAs

• Collaborate closely with product, design, GTM, and analytics teams to identify, prioritize, and execute high-impact growth opportunities

How to be successful in this role:

• Strong backend development experience using Go and/or Python

• Deep familiarity with designing APIs, data models, and scalable backend architectures

• Experience with usage metering, subscriptions, pricing systems, or internal tooling for growth experiments

• Comfort working with Postgres, Redis, and modern backend infrastructure/cloud services

• Product intuition and a track record of working on monetization, activation, or developer-facing features

• Startup DNA with the ability to thrive in fast-paced, zero-to-one environments

• Self-directed with an ownership mindset

• Bonus: Experience building for developers or product-led growth platforms

• Bonus: Familiarity with LLMs, GenAI applications, or agentic frameworks

Compensation & Benefits

• Competitive salary and equity stake for role and stage of company. Commensurate with experience.

• Annual salary range: $165,000-$195,000 USD for Senior Engineers