Mobile Software Engineer Intern (TikTok-Engineering Excellence-Dev Infra) - 2026 Summer (BS/MS)

The IC-TikTok team, part of the Intelligent Creation department, is an international R&D group tasked with building creative capabilities for TikTok. We're dedicated to productizing AI and multimedia technologies to create world-class creation experiences for TikTok users. Our tech stack includes front-end, back-end, mobile, and desktop development, as well as multimedia technologies like audio/video processing and AR effects, in addtion to visual and graphic algorithms. Join us to craft the best creative tools with the most cutting-edge AI and multimedia technologies!



Joining the IC-TikTok Dev Infra Team will provide you with an excellent career growth opportunity, allowing you to contribute to the enhancement of the creative experience for millions of users worldwide. If you are a skilled compilation, C++, Android/iOS, fullstack Engineer with a passion for technological innovation and content creation, we sincerely invite you to be part of our Dev Infra team. Let's collaborate to build outstanding development environments that power innovative creative tools on 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. Turn your ambitions into reality as your inspiration brings infinite opportunities at TikTok.

Internships at TikTok aim to provide students with hands-on experience in developing fundamental skills and exploring potential career paths. A vibrant blend of social events and enriching development workshops will be available for you to explore. Here, you will utilize your knowledge in real-world scenarios while laying a strong foundation for personal and professional growth. It runs for 12 weeks.



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 as early as possible. Please state your availability clearly in your resume (Start date, End date).



Summer Start Dates:

- May 11th, 2026

- May 18th, 2026

- May 26th, 2026

- June 8th, 2026

- June 22nd, 2026



Online Assessment

Candidates who pass resume screening will be invited to participate in TikTok's technical online assessment.



You will be responsible for designing, building, and maintaining scalable and robust developer infrastructure that supports our effect and multimedia sdks that power the TikTok app's video creation process. You will work closely with native cross-platform toolchains such as Gradle, CocoaPods, LLVM, Clang, Java, Kotlin, and Swift. This hands-on experience with diverse technologies will significantly enhance your technical breadth and help you grow into a highly versatile and well-rounded engineer.



Responsibilities:

- Implement CI/CD pipelines, test automation, logging, and monitoring for several of TikTok's internal cross platform sdks and applications;

- Ensure code quality, security and data compliance through automated quality checks, static analysis and other processes;

- Develop internal tools and software for use by developers in their everyday work;

- Continually improve development efficiency by optimizing code review and build processes;

- Working closely with compiling toolchains to optimize building speed.