Senior Backend Software Engineer (Location-Based Services) - TikTok Local Service

TikTok LBS Platform is building a global high-quality LBS database and high-performance LBS services that connect TikTok users with nearby merchants and local services.

• Build a fused geolocation system using multiple signal sources such as IP, Wi-Fi, and GPS to support TikTok local services and other TikTok products.
• Build Nearby & Location Profile services to support TikTok local services. You'll be exploring cutting-edge technology alongside experts, pushing the boundaries of imagination. Every line of your code will serve billions of users.
• Participate in building an real-time streaming data scheduling system to ensure overall data scheduling performance and high scalability.
• Participate in constructing the entire geolocation data access process, the online/offline data cleansing modules, and the microservice encapsulation, development, and deployment of algorithm models.
• Engage in developing the core geolocation microservices, including online storage, geolocation inferencing services, and fusion service modules, to meet high queries per second (QPS) from multiple upstream services.
• Continuously analyze and deeply explore system deficiencies to improve system performance and stability.
• Design, build, and evaluate LLM-powered workflows, including prompt engineering, retrieval-augmented generation (RAG), tool use and agent orchestration, to improve the efficiency of feature engineering and microservice iteration upgrades for geolocation.
• Collaborate with AI engineers to establish efficient module update and release mechanisms and processes, enhancing overall system development and iteration efficiency.