The Social Graph team at TikTok is at the forefront of innovation in large-scale graph computing. We design and build the core graph infrastructure that powers TikTok's social ecosystem - processing trillions of edges and billions of vertices to deliver real-time relationship insights to billions of users worldwide. Our high-performance engine enables millisecond-level multi-hop queries, dynamic cluster and community detection, and real-time graph mining-directly powering key features such as friend recommendations, live streaming, risk control, and messaging. Here, every line of code you write will directly impact the social experience of users worldwide. Together, we will redefine how people connect globally.