后端/AI应用开发工程师-抖音支付（北京）
Core
Design and implement AI agents and RAG-based knowledge assistant applications for Douyin's payment ecosystem, optimizing stability, success rates, and costs while maintaining core payment systems.
Role type
Senior Backend/AI Application Engineer (Payments)
Builds
Payment-focused AI agents, RAG knowledge assistants, and scalable core payment infrastructure
Domain
Fintech / Payments / Generative AI
Deliverable
production ML models
Required skills
Go (Golang), Python, Java, MySQL, Redis, High-concurrency system design, RAG engineering, Prompt engineering, Evaluation framework design
Preferred skills
AI-driven development practices, Automated testing, AlCoding
Technologies
Go, Python, Java, MySQL, Redis, RAG, LLMs
Responsibilities
Design and develop AI agents for payment scenarios; Maintain and scale core payment systems for high-traffic events; Implement and optimize RAG modules for knowledge retrieval; Manage prompt and skill iteration for business scenarios; Build evaluation datasets and annotation workflows; Integrate frontier AI technologies into existing systems.
