BACKEND SYSTEMS & AI AGENTS

Charles Chi Le 乐驰

Backend & AI Agent Engineer

I build reliable cloud platforms and practical AI agents. My work spans Elasticsearch infrastructure, agent development, and backend systems at Alibaba Cloud, ByteDance, and Meituan.

A Duke University M.Eng. graduate and open-source contributor, I enjoy turning complex systems into useful, dependable software.

View résumé · 中文 Get in touch

Duke M.Eng.
Zhejiang B.Sc.

16,000+Cloud instances inspectedAlibaba Cloud · ~99.9% success rate

20M+Orders monitored dailyByteDance · billing accuracy

2,000 QPSRetrieval API capacityMeituan · increased from 500 QPS

Experience

Alibaba Cloud 阿里云

Java Backend & Agent Engineer

Feb–Nov 2026 Hangzhou, China

Computing Platform Division · AI Search Cloud Platform

Elasticsearch PaaS & health events. Built control-plane capabilities across events, monitoring, inspections, and agents. Connected monitoring, log ingestion, and anomaly detection to generate about 1,500 health events per week across 400+ instances.
ES Agent. Integrated authorization, tools, knowledge bases, and Skills for diagnostics, data insights, and instance management. Serves 150+ users and answers 2,000+ questions monthly.
Intelligent inspections. Built Agent-first inspections with rule-based fallback, covering 16,000+ instances at approximately 99.9% success, with scheduled execution and structured reports.
Skill evaluation & improvement. Built evaluation and iteration workflows across 12 fault scenarios, raising scores from about 40% to nearly 90%. Distilled 19 reusable Skill lessons from 541 cases, with human review before release.

ByteDance 字节跳动

Backend Engineering Intern · Go

May–Aug 2025 Hangzhou, China

Global E-commerce · Funds Center

Built configurable billing workflows, reducing development time for standard requests from 4 to 0.5 person-days. Developed Elasticsearch and Hive dashboards to monitor more than 20 million orders daily.
Used RocketMQ and EaseJob to retry failed settlement tasks, improving billing–settlement consistency within SLA from 80% to 99.99%+. Developed MySQL–Elasticsearch consistency checks.

Meituan 美团

Backend Engineering Intern · Java

May–Aug 2024 Beijing, China

Core Local Commerce · Search Advertising

Developed search-ad serving logic for pharmaceutical brands, including CPT/CPM sales logic and merchant/brand billing.
Optimized an inverted-index retrieval API from 500 to 2,000 QPS, reducing tail latency from 181.9 ms to 24.7 ms. Compared traffic allocation and significance reporting across A/B experiment platforms.