Mobile Networking Engineer

Flipster

Mobile Networking Engineer responsible for SDK-level connectivity in iOS and Android crypto apps. Engineering role focused on connection management and user resilience strategies in challenging networks.

Posted 5/25/2026full-timeRemote • 🇨🇳 ChinaMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

AndroidiOS

About the role

Key responsibilities & impact

Own the SDK-level connectivity layer for our iOS and Android apps in mainland China
Focused on transport-layer logic, connection management, and client-side resilience strategies for users in challenging network environments

Requirements

What you’ll need

4+ years of mobile SDK development on iOS or Android (both preferred) with significant time spent on the networking layer
Direct hands-on experience shipping apps to mainland China users with measurable reliability improvements you can describe
Strong understanding of TLS, TCP behavior, and modern transport protocols (HTTP/2, HTTP/3, QUIC, WebSocket)
Comfortable with Wireshark, tcpdump, Charles, and platform-specific network debugging tools
Based in mainland China and able to test directly against real regional network conditions
Experience at fintech, exchange, streaming, or gaming companies with mainland China users
Familiarity with native networking stacks (NSURLSession, OkHttp, Cronet) and how to customize them
Background in protocol design or transport-layer optimization

Benefits

Comp & perks

A real, hard, well-resourced problem
A team that respects deep network expertise
Autonomy on architecture and protocol decisions
Direct impact on user experience for our entire mainland China user base

ATS Keywords

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Hard Skills & Tools

mobile SDK developmentnetworking layerTLSTCP behaviorHTTP/2HTTP/3QUICWebSocketprotocol designtransport-layer optimization