Research Intern

Team Introduction ByteDance Networking brings together innovative ideas and technologies from network architecture, software defined networking (SDN), network virtualization, switch software and hardware co-design, and high-speed networking, to create hyperscale data-center networking solutions that power several of the most popular apps of the world such as Douyin and TikTok which serve hundreds of millions of users around the globe. ByteDance Networking is responsible for designing, building, and operating the global, intelligent network infrastructure to meet the requirements of high availability, scalability, and high-performance. By joining this team, you will gain marketable software development and/or network operation experiences in data center networking at massive scale. We are looking for talented individuals to join us for an internship in 2026. Internships at ByteDance aim to offer students industry exposure and hands-on experience. Turn your ambitions into reality as your inspiration brings infinite opportunities at ByteDance. PhD internships at ByteDance provide students with the opportunity to actively contribute to our products and research, and to the organization's future plans and emerging technologies. Our dynamic internship experience blends hands-on learning, enriching community-building and development events, and collaboration with industry experts.Applications will be reviewed on a rolling basis - we encourage you to apply early. Please state your availability clearly in your resume (Start date, End date). Responsibilities: - Design, optimization, implementation and deployment of high-performance transport protocols to support AI/LLM applications. - Design, optimization, implementation and deployment of congestion control algorithms to support AI/LLM applications.. - Research and development of high-performance AI communication framework, network protocol stacks, and co-design optimization of host-network-application to improve the scalability, reliability and performance of AI/LLM networks. - Follow the latest technologies from academia and industry, identify the innovative parts of the system and present in academic papers. Minimum Qualifications: - Currently pursuing a PhD in computer networking or a related technical discipline. - Experience with at least one of the following areas: - Be familiar with network protocols like TCP and RoCEv2, have experience in network programming based on Socket and verbs APIs; - Be familiar with Data Center congestion control algorithms, understand their pros and cons; - Knowledge of scale-up protocols like PCIe, NVLink, UALink, and their differences with scale-out network protocols; - Be familiar with the latest advances in the area of high-speed network systems, including RDMA, congestion control, AI network optimization and so on; - Proficiency in one or several mainstream programming languages, including C/C++, Python, Go and so on; - Have some knowledge of GPU architecture; - Experience in developing high performance communication frameworks (including NCCL, MPI and RPC libraries) is a plus. Preferred Qualifications: - Be familiar with AI training/inference systems and software-hardware co-design. - Having top tier networking conference publications such as NSDI,SIGCOMM,OSDI,SOSP etc.