Principal Mobile Engineer Platm MetaMask

Salary: $227k - $272k

🔹As a Principal Engineer, you will:
-Own mobile platform architecture
-Define and evolve the architecture of MetaMask Mobile (React Native + native).
-Make key tradeoffs between JS/TS, RN, and native to balance performance, reliability, and iteration speed.
-Design and steward core platform systems (e.g., OTA, analytics foundations, data/persistence, auth, VPN/geolocation primitives).
-Lead high‑impact, cross‑team initiatives.
-Drive large upgrades and migrations (React Native, navigation, foundational libraries).
-Lead structural performance and stability work: startup time, crash rate, ANRs, jank, memory usage, bundle size.
-Break large efforts into incremental, shippable milestones with clear impact.
-Elevate developer experience & automation.
Improve tooling, local dev ergonomics, build/test pipelines, and release workflows for all mobile engineers.
-Establish clear patterns for navigation, state management, and platform primitives to reduce cognitive load.
-Push towards "push‑button" releases and reduced operational toil via automation.
-Build an AI‑enabled platform.
-Integrate AI/LLMs into workflows to scaffold code, enforce patterns, and improve testing and feedback loops.
-Help define how tickets and platform patterns leverage AI safely and effectively.
-Drive app health & performance culture.
-Define and evolve metrics and dashboards for performance, stability, and efficiency.
-Provide tools and guidance so feature teams can self‑diagnose and own regressions.
-Champion shared accountability for app health across all teams contributing to mobile.
-Multiply impact through leadership.
-Mentor Senior/Staff engineers and influence technical direction across Wallet Platform and MetaMask.
-Lead design and architecture reviews for critical platform areas.
-Help shape hiring and technical culture for a lean, senior, high‑leverage Mobile Platform team.
-Would be great if you brought this to the role

🔹Experience:
-10+ years building and scaling mobile apps, including ownership of large, production React Native or hybrid mobile platforms.
-Prior Staff/Principal‑level impact: leading complex, cross‑team technical initiatives.