Software Engineer Intern (TikTok AI Search & Visual Search Infra Team) - 2027 Summer

We embrace a culture of self-direction, intellectual curiosity, openness, and problem-solving.

We are looking for talented individuals to join us for an internship. Our internship program offers students hands-on experience, industry exposure, and opportunities to apply their knowledge to real-world challenges while building a strong foundation for personal and professional growth.
Interns will gain practical experience, explore potential career paths, and participate in social events, learning programs, and development workshops alongside industry professionals.
Candidates may apply to a maximum of two positions across Our Company and its affiliates globally. Applications will be considered in the order they are submitted.
Applications are reviewed on a rolling basis, so we encourage you to apply early. Please clearly state your availability in your resume, including your start and end dates.

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

Responsibilities
- Design, build, and optimize large-scale infrastructure for TikTok AI Search & Visual Search, supporting billions of online search requests and large-volume offline data processing.
- Evolve TikTok's search agent platform, including multi-agent orchestration, ReAct and tool-calling workflows, RAG indexing & serving engine, and context/memory management.
- Deploy and optimize LLM/VLM post-training and inference, including GPU inference acceleration, SFT/RL efficiency, kernel/CUDA optimizations, and offline throughput improvement.
- Build and improve search engine components such as offline document processing pipelines, distributed indexing systems for billion/trillion documents, feature extraction services, and multi-stage retrieval/ranking services
- Develop scalable data pipelines and distributed systems for processing billion- or trillion-scale text, image, and video datasets, covering offline computation, stream processing, task scheduling, storage, and data quality.
- Explore emerging technologies in personalized search, generative search, multimodal understanding, reinforcement learning, model alignment, and evaluation.
- Collaborate with machine learning, product, and other engineering teams to deliver accurate, responsive, and engaging AI-powered and visual search experiences.

Qualifications

Minimum Qualification(s):
- Currently pursuing a Bachelor's degree in Computer Science or a related technical discipline.
- Strong programming skills and a solid foundation in data structures and basic algorithms.
- Familiarity with Linux development environment and proficiency in at least one programming language such as C++, Java, Python, or Go
- Strong analytical and problem-solving abilities, with an interest in solving complex engineering problems at scale.
- Effective communication and collaboration skills, along with a strong sense of ownership and willingness to learn.

Preferred Qualification(s):
- Currently pursuing a Master's degree in Computer Science or a related technical discipline.
- Internship, research, course project, or open-source experience in one or more of the following areas:
- LLM/VLM serving, RAG, or AI agents
- Distributed systems, storage systems, and large-scale data processing
- Search engines, information retrieval, recommendation systems, or advertising systems
- Understanding of search engine concepts such as query understanding, indexing, retrieval, ranking, and result aggregation
- Familiarity with LLM serving frameworks such as vLLM, SGLang, or TensorRT-LLM, or agent development frameworks such as LangGraph, is a plus.
- Experience analyzing or optimizing system performance, including latency, throughput, concurrency, memory utilization, or resource efficiency
- Ability to learn new technologies quickly and apply them to practical engineering or research problems

Client-provided location(s): San Jose, CA

Job ID: TikTok-7676276048527214901

Employment Type: INTERN

Posted: 2026-09-03T21:47:07