Model Infra Engineer Intern (TikTok Recommendation Architecture) - 2026 Start (BS/MS)

The Recommendation Architecture team is responsible for building up and optimizing our recommendation system's architecture to provide the most stable and best experience for our users. We are looking for highly motivated interns who are passionate about optimizing Large Language Models (LLMs) and large-scale recommendation models.

We are looking for talented individuals to join us for an internship from September 2025 onwards. Internships at TikTok aim to offer students industry exposure and hands‑on experience. Candidates can apply to a maximum of two positions and will be considered for jobs in the order you apply. 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.

• Optimize model performance and memory efficiency on GPU‑based systems.
• Collaborate with...