[HN/HCM] Site Reliability Engineer

Own reliability, performance, and scalability across Android (Kotlin), iOS (SwiftUI), and backend APIs. Build end-to-end observability (metrics/logs/traces), define SLI/SLO/SLA, and maintain reliability dashboards. Instrument mobile apps (Crashlytics/Sentry, Firebase Performance, MetricKit) and analyze traces with Xcode Instruments & Android Profiler/Perfetto. Optimize startup time, rendering, memory, network, and caching on both platforms (Coroutines/Flows, Combine/async-await). Establish CI/CD for mobile (Fastlane, signing, TestFlight/Play, phased rollout) and APIs (canary/blue-green, autoscaling, rollback). Run performance/load testing (k6/JMeter), capacity planning, and cost/perf optimization. Lead incident response/on-call, publish blameless postmortems, and drive remediation. Partner with Security on ISO 27001/27017 controls, secrets management, and privacy compliance.