# Huan Li

> Software Engineer at Facebook

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/huan

Senior Software Engineer with 7+ years of experience at Meta building one of the world’s largest experimentation infrastructure that serves 3B+ users across Facebook, Instagram, WhatsApp, and Messenger. Expert in Large-Scale Distributed Systems, Privacy Compliance (GDPR/CCPA), and Internal Tooling. Proven track record in refactoring legacy architectures to achieve 99% latency reduction and 78% storage savings

## Work Experience
### Software Engineer @ Meta
Jan 2017 – Present | San Francisco Bay Area
Core Experimentation Infrastructure & Product Growth:
- Experimentation Framework: Developed and optimized key components of the core A/B testing framework supporting 3B+ users across Facebook, Instagram, and Messenger. Engineered a template-based system that streamlined adoption for 178+ teams and thousands of concurrent global experiments.
- Real-time Data Pipeline: Re-architected experiment dashboards by migrating data retrieval from legacy batches to real-time engines. Reduced data latency by 95% (minutes to <20s), eliminating backfill needs for 1,400+ daily queries.
- Storage & Reliability: Redesigned the "HealthCheck" microservice schema for TB-scale monitoring data, achieving a 78% reduction in storage footprint and optimizing query latency by 99%.
- Developer Experience (DevEx): Developed the "Experiment Debugger" and robust RESTful services to automate diagnostic flows, reducing cross-team debugging cycles from 7 days to <2 days.
- ML Integration: Partnered with ML teams to operationalize "Personalized Experiments" (PEX), enabling automated, supervised learning-based treatment assignments.

Privacy Compliance & Data Governance:
- Privacy Framework: Technical owner for the end-to-end integration of a global compliance framework (Policy Zone) across the experimentation ecosystem. Standardized data collection to ensure consistent GDPR/DMA enforcement.
- Data Deletion: Modernized legacy codebases to automate PII removal and data deletion workflows across Hive and TAO, enforcing "Right-to-be-Forgotten" mandates.
- Compliance Monitoring: Architected a high-throughput pipeline capturing 2.5M+ daily logs, establishing a scalable "Source of Truth" for legal audits and data usage transparency.

Engineering Excellence & System Reliability:
- Incident Management: Managed P0/P1 production incidents for global platforms. Rapidly mitigated critical outages related to Ads revenue and cross-platform configurations for 3B+ users.

### Software Engineer Intern @ Facebook
Jan 2016 – Jan 2016
Developed backend monitors and full-stack features for Facebook Pages, conducting large-scale A/B
tests on millions of public users.

### Research Assistant @ National Renewable Energy Laboratory
Jan 2012 – Jan 2014
-Modeling and simulation of the electronic properties of thin film solar cell devices
-Studied the performance of the semiconductor thin film solar cell devices using atomic force microscopy (AFM) based techniques and scanning electron microscopy (SEM).


## Education
### Doctor of Philosophy (PhD) in Physics
The University of Texas at Austin

### Bachelor's degree in Physics
Nanjing University


## Contact & Social
- LinkedIn: https://linkedin.com/in/huan-li-28bb5216

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Source: https://flows.cv/huan
JSON Resume: https://flows.cv/huan/resume.json
Last updated: 2026-03-22