Appsierra
From Appsierra's careers page
Status: listed on the employer's own careers page when we last checked (daily). Confirm on their site before applying.
We’re looking for engineers who can build performant mobile apps that handle live data, low latency, and production-scale usage.
We are building real-time, high-scale applications involving chat, streaming, and interactive experiences. We’re looking for engineers who can build performant mobile apps that handle live data, low latency, and production-scale usage.
Build and maintain high-performance React Native applications
Integrate real-time systems (WebSockets, RTC, live updates)
Work with SDKs like Agora or similar
Optimize app performance (FPS, memory, startup time)
Handle network variability, retries, and offline states
Collaborate with backend/infra teams on APIs and contracts
Debug production issues (crashes, latency, memory leaks)
Must-Have Skills
Strong experience in React Native (3-5 Years)
App lifecycle
Performance optimization
Native bridges (Android/iOS basics)
WebSockets / real-time updates
API integration at scale
Strong debugging skills (Flipper, profiling tools)
Experience handling production apps with real users
Good-to-Have
Chat / live streaming / gaming
Push notifications
Background tasks
Familiarity with analytics and monitoring tools
Engineers who care about performance, not just UI
Ability to debug real-world issues (not just build features)
Strong ownership mindset
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