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TikTok

Short-form video platform with ads

AI Infrastructure Engineer Graduate - Algorithm Infrastructure, PhD

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeSan Jose, CA, USAIn-person

About the Job

Requirements

  • Candidates must be completing or have recently completed a PhD in Software Development, Computer Science, Computer Engineering, Software Engineering, Artificial Intelligence, Mathematics, or a related technical discipline.
  • Familiarity with large-model architectures and strong system design skills for complex, high-concurrency environments.
  • Strong understanding of asynchronous scheduling, resource pooling, and load balancing in distributed microservice systems.
  • Strong engineering skills in performance optimization and production system development.

Responsibilities

  • Build and evolve next-generation inference systems for large-scale online traffic, including global scheduling across heterogeneous compute resources, high-concurrency load balancing, and efficient batch formation.
  • Optimize distributed inference for 200B+ models and complex multimodal models through tensor parallelism (TP), expert parallelism (EP), data parallelism (DP), and related strategies to improve production throughput and latency.
  • Develop high-performance kernels for frontier model architectures such as mixture of experts (MoE), emerging attention mechanisms, and multimodal fusion layers using CUDA, Triton, and related tools.
  • Explore AI-driven infrastructure for inference systems, including AI agents for kernel optimization, performance tuning, consistency validation, deployment pipelines, and intelligent operations.

About the Company

TikTok

Short-form video platform with ads

TikTok is a short-form mobile video platform that lets people create, discover, and share quick videos. Users upload vertical clips, edit them with built-in tools, and browse a personalized feed powered by an algorithm that highlights relevant content. Advertisers can use in-feed ads, branded hashtags, and the Business Center to plan and measure campaigns, making it easy for brands to reach a global audience. Its goal is to inspire creativity and bring joy by helping people express themselves and by connecting brands with a wide audience.

Company size
10,001+
Company stage
Grant
Total funding
$740K
Headquarters
Santa Monica, CA
Founded
2016

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