AI​/LLM Network Software Development Engineer

AI/LLM Network Software Development Engineer Overview

The Networking team 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 Tik Tok which serve hundreds of millions of users around the globe.

The Networking team 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.

• Design, implementation and deployment of high‑speed network technologies to support AI/LLM applications.
• Design and development of platforms/systems for monitoring, analysis and diagnosis of large‑scale AI/LLM network.
• Research and development of high‑performance AI communication framework, network protocol stacks, and code‑design optimization of host‑network‑application to improve the scalability, reliability and performance of AI/LLM network.
• Building next‑generation AI network infrastructure supporting large‑scale heterogeneous network hardware with innovative and deployable solutions.

• Bachelor or higher degree in computer science, electronic engineering, network engineering or related fields.
• Proficiency in computer network and network programming.
• Proficiency in one or several mainstream programming languages, including C/C++, Python, Go and so on.
• Be familiar with the latest advances in the area of high‑speed network systems, including RDMA, congestion control, AI network optimization and so on.

• Experience in developing high‑performance communication frameworks (including NCCL, MPI and RPC libraries) is a plus.
• Experience in developing software systems for AI network diagnosis and performance optimization is a plus.

Tik Tok is the leading destination for short‑form mobile video. At Tik Tok, our mission is to inspire creativity and bring joy. Tik Tok's global headquarters are in Los Angeles and Singapore, and we also have offices in New York City, London, Dublin, Paris, Berlin, Dubai, Jakarta, Seoul, and Tokyo.

Inspiring creativity is at the core of Tik Tok's mission. Our innovative product is built to help people authentically express themselves, discover and connect – and our global, diverse teams make that possible. Together, we create value for our communities, inspire creativity and bring joy – a mission we work towards every day.

We strive to do great things with great people. We lead with curiosity, humility, and a desire to make impact in a rapidly growing tech company. Every challenge is an opportunity to learn and innovate as one team. We're resilient and embrace challenges as they come. By constantly iterating and fostering an “Always Day 1” mindset, we achieve meaningful breakthroughs for ourselves, our company, and our users.

When we create and grow together, the possibilities are limitless.

Tik Tok is committed to creating an inclusive space where employees are valued for their skills, experiences, and unique perspectives. We celebrate diverse voices and create an environment that reflects the many communities we reach.

Tik Tok is committed to providing reasonable accommodations in our recruitment processes for candidates with disabilities, pregnancy, sincerely held religious beliefs or other reasons protected by applicable laws. If you need assistance or a reasonable accommodation, please reach out to us at

• Compensation Description (Annually):
  The base salary range for this position in the selected city is $177,688 – $341,734 annually.
• Benefits:
  Employees have day‑one access to medical, dental, and vision insurance, a 401(k) savings plan with company match, paid parental leave, short‑term and long‑term disability…