后端研发工程师（LLM/Agent方向/抖音搜索） - 抖音研发
Core
Backend R&D engineer focusing on LLM/Agent engineering for Douyin search, building high-concurrency search systems and AI-driven agent applications.
Role type
Senior IC backend engineer (LLM/Agent)
Builds
Douyin search product features, LLM/Agent applications, and high-performance search infrastructure
Domain
Internet / Search / Large Language Models / AI Agents
Deliverable
production ML models
Required skills
C/C++, Golang, Java, data structures, algorithms, operating systems, network design, system design, high-concurrency development, complex system architecture
Preferred skills
search backend, recommendation systems, LLM application engineering, Agent platform, AI coding, server-side architecture governance, performance optimization, stability engineering
Technologies
PE, RAG, post-training, multi-turn dialogue, task decomposition, tool calling, workflow orchestration, context management
Responsibilities
Design and implement search product features and LLM/Agent applications; optimize search link performance and stability; evolve server-side architecture and govern legacy systems
Seniority
Senior, hands-on IC