# Allen Chen

> Engineering at Sierra

Location: San Francisco, California, United States
Profile: https://flows.cv/allenchen1

## Work Experience
### Engineer @ Sierra
Jan 2025 – Present | San Francisco, California, United States
Product Engineering

### Director of Engineering @ Plaid
Jan 2021 – Jan 2025 | San Francisco, California, United States
2025: Customer growth, Link & consumer growth, applied AI. Managed an org of 40 engineers and EMs across 8 teams.
2024: Link & consumer growth
2021 - 2023: Core Payments Products, Pay by Bank

### Engineering Manager, Conversations & Fleets @ Twitter
Jan 2019 – Jan 2021 | San Francisco, California, United States
New products (Fleets), safety, ML infra, product infra. User growth.

### Engineering Manager, Timelines Infrastructure @ Twitter
Jan 2017 – Jan 2019 | San Francisco, California, United States
Core product infra for Twitter feeds (Timelines, Likes, Replies, etc.)
User growth, reliability, velocity.

### Senior Software Engineer @ Twitter
Jan 2013 – Jan 2017 | San Francisco, California, United States
2013 - 2015: Data Infrastructure
2015 - 2017: TL for Tweet Conversations. Led & launched 0->1 ranking for Tweet Conversations, abuse, safety.

### Software Engineer @ Google
Jan 2012 – Jan 2013 | Mountain View, CA
Risk Engineering. ML infra for fraud.

### Student Researcher @ UC Berkeley RAD/AMP Lab
Jan 2010 – Jan 2012

### Software Development Engineer - Intern @ Microsoft
Jan 2010 – Jan 2011 | Redmond, WA
SkyDrive web client and backend


## Education
### B.S. in Electrical Engineering and Computer Science
University of California, Berkeley


## Contact & Social
- LinkedIn: https://linkedin.com/in/allenschen
- Portfolio: http://allenschen.com

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Source: https://flows.cv/allenchen1
JSON Resume: https://flows.cv/allenchen1/resume.json
Last updated: 2026-04-11