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LangChainLangChainSan Francisco, CA

Senior Fullstack Engineer, Growth & Monetization

Senior fullstack engineer building growth and monetization systems including onboarding, experimentation, billing, and self-serve expansion features. Works across React, TypeScript, Python, and Go in a high-impact 0→1 role.

175k – 240k/yr
On-site5+ YOEFullstack Engineering

About the role

What you'll do

  • Work across our stack (React, TypeScript, Python, Go) to deliver full-stack product features that drive growth and retention
  • Build flexible experimentation systems and processes capable of targeting diverse growth metrics
  • Participate in data-driven, rapid growth experiments across the user funnel from onboarding to monetization
  • Design and ship new onboarding features and improvements that accelerate time to value
  • Build growth levers including usage-based guardrails, smart upgrade triggers, and contextual CTAs
  • Collaborate closely with product, design, GTM, and analytics teams to identify, prioritize, and execute high-impact growth opportunities

What you'll bring

  • Extensive fullstack software development experience using React, TypeScript, and Go and/or Python
  • Strong product intuition and a track record of working on monetization, pricing, or activation features
  • Familiarity with usage metering, subscriptions, and internal tooling for pricing experiments
  • Comfortable working with REST APIs, Postgres, Redis, and modern backend infra
  • 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
  • Familiarity with LLMs, GenAI applications, or agentic frameworks

Compensation

  • Salary Range: $175,000-$240,000 USD
  • Competitive compensation that includes base salary, variable compensation for relevant roles, meaningful equity, benefits, and perks

Benefits

  • Medical, dental, and vision coverage
  • Flexible vacation
  • 401(k) plan
  • Meals on in-office days in the US

Skills

ReactTypeScriptPythonGoREST APIsPostgresRedisUsage MeteringSubscriptionsPricing Experiments
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