Staff Android Engineer

Overview Join Polymarket as Staff Android Engineer to shape the Android platform for a world-class trading app used by millions. You will set technical direction, own architectural decisions, and elevate the Android stack from payments to real-time market data. The role combines leadership across a distributed team with hands-on work in Kotlin, Jetpack Compose, and scalable CI/CD. You will work at scale to improve performance, reliability, and the developer experience while integrating AI tools to accelerate delivery. This is a high-visibility opportunity to influence product architecture and impact a fast-growing, mission-driven platform. Compensation / Benefitscompetitive salary & equityUnlimited PTOHealth, Vision, & Dental coverage401k matchHardware setup: new MacBook Pro, big display, & accessories ResponsibilitiesSet the technical direction for Android and own architectural decisionsBuild and own Android features across payments, real-time data, and core UI from design handoff to productionDevelop polished, high-performance UI with Jetpack ComposeOwn CI/CD pipelines and Gradle configuration for fast builds and reliable releasesIntegrate and maintain live market features using WebSockets, gRPC, and streaming dataProvide technical leadership across a distributed team through code reviews and engineering standardsIncorporate AI tools into the development workflow to boost speed and outputIdentify and address Android architecture gaps before scale-related issues arise Key requirementsSignificant Android engineering experience with platform ownership at scaleStrong Kotlin expertise with clear architectural decision-makingExtensive experience building production UI with Jetpack ComposeExperience owning CI/CD pipelines and Gradle end-to-endSolid understanding of modern Android architecture and its evolution at scaleProven technical leadership influencing engineering practicesActive use of AI tools in development workflows(Plus) Payments integration on Android(Plus) WebSockets, gRPC, or other real-time data patterns on mobile(Plus) Cross-platform shared-code architectures(Plus) iOS or Swift experience(Plus) Experience shaping practices in mature engineering organizationsStrategic yet hands-on leadershipClear, proactive communication across distributed teamsDecision-making with limited hand-holdingKotlinJetpack ComposeCI/CD pipelines