Full-Stack Engineer Intern (Mobile Experience Platform) - 2026 Start (BS/MS)

Responsibilities

TikTok Experience-mobile team is responsible for providing the best industry experience for users to consume video content. In this team, you will be working with our XFN partners to define a world-class user experience. This includes playback experience: low-latency and fluent video playback, efficient encoding and decoding, high quality videos; mobile experience: short app launch time, smaller app-size, wise power control and refined strategy via on-device ML. mobile reliability: high stability, accurate online alarm and disaster recovery system, complete version release assurance. The Vision of team is "Making the user experience and reliability one of the core product competitiveness of TikTok.

We are looking for talented individuals to join us for an internship in 2026. Internships at TikTok aim to offer students industry exposure and hands-on experience. Watch your ambitions become reality as your inspiration brings infinite opportunities at TikTok

Candidates can apply to a maximum of two positions and will be considered for jobs in the order you apply. The application limit is applicable to TikTok and its affiliates' jobs globally.

Applications will be reviewed on a rolling basis - we encourage you to apply early.

Successful candidates must be able to commit to at least 3 months long internship period.

We support credit-bearing internship registration, subject to the intern's school requirements and company approval.
Successful candidates must be able to commit to either of the following Internships
- From January to June (onboard by 12 Jan 2026)
- From May to August (onboard by 11 May 2026)

Responsibilities:
Address the challenges of international short videos with a global DAU in the hundreds of millions, rapid business iterations, and complex network environments by optimizing the experience of the iOS App to create the best short video experience.
2. Build cutting-edge performance platform to find, attribute and intercept experience issues from users, help developers efficiently and accurately detect and optimize performance problems.
3. Conduct data analysis based on user experience scenarios, define optimization strategies, enhance user experience, and solve complex issues.

Qualifications

Minimum Qualifications:
1. Undergraduate or Postgraduate with a background in computer science, software engineering, information technology or related majors;
2. Solid foundation in computer science. Understanding of object-oriented programming concepts.
3. Developers with strong self-drive and sense of responsibility, with internship experience in back-end/front-end development, and who have participated in complete projects will be given priority;