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Client-Side Audio/Video Development Engineer (Android / iOS / Web)
at Binance
Mid LevelNo visa sponsorshipiOS/Android Mobile Development
Posted 7 hours ago
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- Compensation
- Not specified
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Currency: Not specified
Develop and optimize client-side RTC and live streaming interactions, including co-streaming, audio routing, in-ear monitoring, weak network strategies, and video quality/bitrate adaptation. Deeply integrate third-party RTC SDKs (e.g., Agora) or in-house SDKs, covering integration, upgrades, parameter management, compatibility/testing, and online issue troubleshooting. Focus on client stability and performance, addressing audio/video threading, CPU/memory/power optimization, end-to-end latency reduction, and issues such as stuttering or no audio. Build client observability with instrumentation, QoS reporting, exception capture, and automatic issue attribution, and collaborate with server/testing/operations teams on stress testing, rehearsals, incident responses, and post-mortems.
Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. We are trusted by 300+ million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world.
Responsibilities
- Develop and optimize client-side RTC/live streaming interaction capabilities: co-streaming (joining/leaving the stream), audio routing, in-ear monitoring/audio mixing, weak network strategies, video quality/bitrate adaptation, and foreground/background/system interruption handling.
- Deeply integrate third-party RTC SDKs (e.g., Agora) or in-house SDKs: integration, version upgrades, parameter management, compatibility and regression testing, online issue troubleshooting (via logs/callbacks/state machines).
- Responsible for client stability and performance: audio/video threading models, CPU/memory/power optimization, end-to-end latency reduction, troubleshooting of complex issues such as stuttering, no audio/black screen.
- Build client observability: key path instrumentation, QoS reporting, exception capture, automatic issue attribution (network/device/permissions/state machine/SDK).
- Collaborate with server-side, testing, and operations teams: formulate stress testing plans, conduct rehearsals, and handle online incident emergency response and post-mortems.
Minimum Qualifications
- 3+ years of Android/iOS/Web (one or multiple platforms) R&D experience; experience with audio/video/live streaming/IM/conference products is preferred.
- Android: AudioRecord/AudioTrack, AudioFocus, permissions & background restrictions, device compatibility.
- iOS: AVAudioSession, audio routing/interruptions, ReplayKit/background strategies.
- Web: WebRTC APIs, getUserMedia, RTCPeerConnection, browser compatibility & security policies.
- Understanding of real-time audio/video principles and common issues: packet loss/jitter/latency, echo & howling, audio routing errors, permission issues, state machine errors leading to "mutual hearing failure," etc.
- Strong engineering skills: modular design, testability, stability governance (Crash/ANR), performance profiling and optimization.
- Ability to understand and utilize core callbacks and diagnostic information from RTC SDKs; capable of online issue localization (building evidence chains using QoS metrics and logs).
Familiar with audio/video fundamentals on your platform:
Preferred qualifications
- In-depth experience with WebRTC (e.g., having read/modified parts of the source code, performed custom builds).
- Experience adapting to complex network environments: overseas networks, weak network strategies, UDP restrictions, NAT traversal related to enterprise/campus networks (knowledge of ICE/STUN significantly enhances troubleshooting efficiency).
- Specialization in audio: 3A (AEC/NS/AGC), audio mixing/voice changing/spatial audio, on-device noise reduction, or AI enhancement.
- Client-side low-level capabilities: C++ core libraries, JNI/NDK, Metal/OpenGL, hardware encoder/decoder tuning, optimization for low-end devices.
- Experience supporting large-scale events: pre-event rehearsals, gradual rollouts (gray releases), feature toggles, emergency strategies, and rapid rollback plans.
- Experience developing real-time live streaming filters.
Why Binance
• Shape the future with the world’s leading blockchain ecosystem
• Collaborate with world-class talent in a user-centric global organization with a flat structure
• Tackle unique, fast-paced projects with autonomy in an innovative environment
• Thrive in a results-driven workplace with opportunities for career growth and continuous learning
• Competitive salary and company benefits
• Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team)
Binance is committed to being an equal opportunity employer. We believe that having a diverse workforce is fundamental to our success.
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