Yan Haonan

Summary

Technical expert with 8 years of experience in AI infrastructure, system architecture, and AI Agents design.
Leading development of Reasoning AI Infrastructure: data pipelines, reinforcement learning, and LLM inference.
Passionate about building scalable systems and solving real-world problems with AI Agents.

Experience

Meituan – Technical Expert Beijing | 2017–2020, 2021–Present

• 2022 – Present:
• Led LLM data synthesis infra, cutting cost from $30M to <$1M.
• Designed and deployed LLM reinforcement learning systems supporting in-house generative and reasoning models, achieving industry-leading performance.
• Core contributor to large-scale inference architecture, outperforming Deepseek benchmarks.
• Collaborated with product and engineering teams to deliver 10+ applied AI solutions across AI assistants, customer service bots, and AI-powered search.


• 2021 – 2022:
• Led product system architecture for community group-buying (10M+ daily orders).
• Managed cross-team platform architecture upgrade and large-scale stability initiative (~70 developers).
• Promoted to “Expert Level” in under a year due to leadership and delivery.


• 2017 – 2019:
• Led core system redesign for vacation/e-commerce transaction systems.
• Rapidly promoted 3 levels within 2 year based on technical excellence and execution ability.

Momo Inc. – R&D Manager Beijing | 2019–2020

• Led company-wide reliability platform development, serving 100+ microservices and earning annual excellence award.
• Promoted to R&D manager within one year, led infra & social platform (10M+ DAU).

Projects & Products Built

• AI Data Pipeline – Scalable training data generation.
• AI Training Infra – Reinforcement learning based reasoning model training.
• AI Inference Platform – High-performance LLM serving.
• Applied AI – AI Assistant, AI Customer Support, and AI Search for real-world business use.
• E-commerce Infra – Product/order systems at scale.
• Social Platform – Led infrastructure for core social features at Momo Inc.

Education

Beijing Jiaotong University – B.S. in Software Engineering 2013 – 2017

• National Level Project, University Innovation & Entrepreneurship Competition (Elderly Health System with Smartwatch)
• Maintainer of school admission website and related systems

Skills & Technologies

AI Agents, Reasoning Models, LLM Training, Reinforcement Learning,
Large-Scale LLM Inference, Distributed Systems