Senior Product Engineer, Growth & Lifecycle Infrastructure - Music & Audio

Role Overview

Senior Product Engineer for Growth & Lifecycle Infrastructure in the Music & Audio vertical at Stability AI. You will own the greenfield build of PLG growth and lifecycle infrastructure that drives measurable conversion from anonymous visitor → paying customer → expanded account across web, desktop, plugin, and mobile.

Responsibilities

• Select and own the stack for the Music & Audio vertical, including:
  • CDP, product analytics, lifecycle/messaging
  • Experimentation, warehouse, reverse-ETL, and entitlements
  • Provide defensible recommendations with a cost model and tradeoffs
• Design an event taxonomy with consistent schema and identity resolution across anonymous → free → paid → multi-device
• Build and attribute the full growth funnel across paid, organic, partner, and in-product virality
• Implement in-app PLG mechanics such as:
  • Viral loops, referral mechanics, upgrade prompts, and sharing hooks
• Define and execute lifecycle marketing strategy using segmentation, behavioral triggers, and messaging cadences for activation, habit, and expansion
• Ship free-to-paid logic, including trial mechanics, paywalls, in-app messaging, and entitlement checks across web and native runtimes
• Build onboarding, churn-risk, reactivation, and win-back sequences
• Instrument A/B experimentation with exposure logging and statistical guardrails
• Own the growth dashboard (activation, conversion, ARPU, LTV, retention cohorts, expansion rate)

Requirements

• 6+ years of end-to-end ownership of product or growth infrastructure in a B2C or PLG B2B company
• Deep expertise in growth marketing and product lifecycle marketing; able to implement, not only define
• Hands-on production experience with the modern martech stack (CDPs, product analytics, lifecycle/messaging, billing, reverse-ETL, transformation layer)
• Proven ability to ship in-app PLG mechanics that drive growth
• Proficiency in TypeScript, Node.js, Python, and SQL
• Familiarity with AI-augmented development tools (e.g., Claude Code, Cursor, Codex)
• Experience building event taxonomies that avoid schema drift
• Track record shipping paywall and entitlement logic where revenue depended on it
• Ability to operate without a product manager: set milestones, own schedule, escalate when needed

Nice-to-haves

• Experience with B2C subscriptions in creative tools/music/design
• Exposure to music or creative-platform go-to-market motions
• Open-source contributions to data tooling
• Experience as the first PLG/growth engineer at a company
• Track record of building in public (Product Hunt, YC network, presence on X/Reddit)

Success Milestones

• Day 30: Stack chosen and approved; identity resolution working; event taxonomy v1 drafted
• Day 60: Full event taxonomy live; first lifecycle sequence in production; baseline dashboard up
• Day 90: Paywall and entitlement logic in production; attribution closing the loop on at least one paid