Senior Staff Software Engineer Mobile Core Messaging
OKX is a leading global cryptocurrency exchange offering a wide range of trading services, including spot and derivatives trading, as well as Web3 solutions.
Maintainer signals as of 9/25/2026
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About OKX
OKX is a global cryptocurrency exchange known for its trading services and financial products. The platform offers a wide range of features, including spot and derivatives trading, staking services, and a user-friendly interface suitable for both beginners and experienced traders.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
Build a unified multi-platform instant messaging SDK, platformize the messaging engine for community chat and payments, develop user-to-agent chat experiences, own real-time and offline message delivery, optimize performance, and build AI-native engineering workflows.
Requirements
- Deep hands-on experience building native iOS and/or Android applications
- Experience with cross-platform or shared business-logic layers
- Fluency in Swift, Kotlin, Rust, Objective-C, Java, or JavaScript
- Architecture experience with large-scale mobile applications
- Depth in a messaging stack, including chat features or real-time networking
- Experience with WebSocket, long connections, offline push, APNs, FCM, or China vendor push
- Strong mobile performance experience with memory, battery, concurrency, and weak networks
- Experience building AI workflows and pipelines
- Experience with instant messaging products or SDKs is advantageous
Responsibilities
- Build a unified multi-platform instant messaging SDK
- Platformize the messaging engine for product teams
- Build user-to-agent conversational AI chat
- Own WebSocket delivery and offline push across regional vendor channels
- Optimize latency, reliability, battery, and memory performance
- Build automated AI-native development workflows
- Conduct design and code reviews
- Mentor engineers
- Set technical direction for the messaging platform at Staff level
Benefits
- L&D programs
- Education subsidy
- Team building programs
- Company events
- Wellness allowances
- Meal allowances
- Comprehensive healthcare schemes for employees and dependants