# Yan Cui

> Staff Software Engineer at Facebook

Location: Menlo Park, California, United States
Profile: https://flows.cv/yancui

Development and research interests 
Design, implementation, scalability, performance, optimization, high availability of:
- Distributed and parallel systems
- Large scale data intensive applications
- Data analytical/monitoring platforms
- Capacity management and resource allocation for clouds 
- Mobile and multicore architectures
- Operating systems and run-time systems
 
Google scholar: 
https://scholar.google.com/citations?user=J0PA7eAAAAAJ&hl=en
Github: 
https://github.com/ycui1984

## Work Experience
### Staff Software Engineer @ Facebook
Jan 2017 – Present
2021.4 - now Resource allowance systems in compute infra (infrastructure)
- Improved server utilization via building stackable reservations, which enables resource sharing across reservations. 
- Drove the design and implementation of prototypes and iterations. Released the feature to the whole company eventually.  
- Extended stackable reservations into GPU based workloads and L-shaped workloads. Drove tooling development for migration. 
- Patent based on the work has been filed

2019.9 - 2021.4 Real-time data ingestion and analytical platform (infrastructure)
- Solved the table retention problem by designing and implementing virtual retention feature, which leveraged data warehouse to make tradeoffs between speed and expensiveness. 
- Optimized query performance via raw data scanning, operators push down, full query cache, make compute and storage close, parallel partition scanning. 
- Released the feature to the whole company, including 30+ table views, and 2X faster than presto based implementations. 
- Patent based on the work has been filed. 
- Published in VLDB 2022 (https://www.vldb.org/pvldb/vol15/p3522-mo.pdf)

2017.6 - 2019.9 Data intensive applications (infrastructure + backend + product)
- Built network insights API from scratch, onboarded use cases including cell alerts, regional maps, local maps, region selection, cell uploads, report building, etc. Used by CXO level executives in partner companies (e.g., T-mobile, AT&T, MTN) to make decisions to improve network infrastructure ecosystems. 
- Ease the management of network and market metrics by designing and implementing metrics system.  
- Built connectivity measurement product and backend from scratch to measure the impact of infrastructure change.
- Optimized and maintained market insights API. 

Highlighted posts:
https://engineering.fb.com/2021/06/28/connectivity/digital-divide/
https://engineering.fb.com/2018/08/10/connectivity/announcing-tools-to-help-partners-improve-connectivity/

### Software Engineer @ Hulu
Jan 2015 – Jan 2017 | Greater Los Angeles Area
Core Service Development (Infrastructure)
- Redis as a service 
- MySQL as a service

### Senior Software Engineer @ LinkedIn
Jan 2015 – Jan 2015 | Beijing, China
Professional Social Network Product Chitu (Backend)
- Solved cold start issue via Importing Linkedin profile to Chitu
- Company and university information page API
- Login by using third party account
- Metadata integration
- Invitation API via Linkedin mail

### Postdoctoral Researcher @ Columbia University in the City of New York
Jan 2013 – Jan 2015 | Greater New York City Area
2013 - 2014 Operating System Performance Research
- Develop a set of API in the kernel that user can express performance requirement
- Make four important subsystem performance cacheable and tunable
- Demonstrate up to 10x performance improvement
- US patent (https://patents.google.com/patent/US10228973B2/en)

2014 - 2015 Founding engineer of NimbleDroid (https://nimbledroid.com)
Improve User Experience on Android Systems 
- Patched Android framework to profile mobile app performance bottleneck
- Data analyzing tool to understand performance data
- Acquired by HeadSpin


## Education
### Doctor of Philosophy (Ph.D.) in Computer Science
Tsinghua University

### Bachelor's degree in Computer Science
Beijing University of Posts and Telecommunications


## Contact & Social
- LinkedIn: https://linkedin.com/in/yan-cui-43a9a015

---
Source: https://flows.cv/yancui
JSON Resume: https://flows.cv/yancui/resume.json
Last updated: 2026-04-12