ByteDance

Responsibilities

The Global Streaming Media team is mainly responsible for the iteration of requirements for TikTok Live's streaming media-related business and the continuous evolution of its technology. We are committed to providing the global users of TikTok Live with the most advanced live streaming product experience. We expect that through continuous technological optimization and innovation, we can offer creators opportunities to present their truest selves, share their lives in real time and bring happiness to everyone.

Responsibilities:

• Research and develop new features on our Live/RTC streaming media platform for TikTok Live;
• Design and implement multimedia and network programs in client SDK and media server;
• Develop multimedia solutions across iOS, Android, Windows, Mac, and Linux platforms;
• Innovate in video algorithms and network transmission to enhance user experience
• Analyze data, fine-tune parameters and optimize the Live/RTC services end to end;
• Explore cutting-edge technologies and contribute to innovation initiatives.

Qualifications

Minimum Qualifications:

• PhD student in Computer Science, Mathematics, or a related technical field;
• Strong foundation in computer science, networking, and operating systems;
• Solid background in multimedia technologies, including image/signal processing, video codecs, or multimedia streaming;

Proficiency in at least one of the following programming languages: C/C++, Java/Kotlin, Objective-C/Swift, Python, or Golang;

• Excellent communication and teamwork skills.

Preferred Qualifications:

• Proficiency in signal processing, video compression, video codecs or video processing algorithms;
• Strong knowledge of network algorithms, including congestion control, loss recovery, bandwidth estimation, latency measurement and control, socket optimization, and real-time video transmission protocols;
• Hands-on experience with multimedia frameworks and tools such as FFmpeg, GStreamer, OBS Studio, VLC, x264, x265, WebRTC, RTP/RTCP streaming, or VoIP products;
• Experience with iOS frameworks (e.g., Core Data, Core Animation) or Android SDK;

Familiarity with media servers such as Nginx RTMP module, Licode, Kurento, mediasoup, or Jitsi;

• Experience in video chat, live streaming, or video conferencing solutions.