# Sarah Z.

> Senior / Staff software engineer

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

## Work Experience
### Senior Software Engineer @ Google
Jan 2022 – Present | San Francisco Bay Area
Working on Google Search GenAI safety
- Designed and built infrastructure to support prompt refinement to identify issues in Search results and GenAI results
- Designed and built pipeline to process large query data and sampled them to target policy breaking / sensitive data, to use as training data with ML classifier.
- Designed and built evaluation tools to calculate metrics and reports for teams across search to identify potential trust issues before product launch.

### Senior Software Engineer @ Square
Jan 2020 – Jan 2022 | San Francisco Bay Area
- Founding member on Cash App Banking team, which generated $12.3 billion revenue in 2021
- Led, designed, and launched projects from scratch: Money Ledger Infrastructure, Cash Card Issuing, Mobile Scan Deposit, and Digital Pay (Apple and Google Pay)
- Led the effort to move all money movement + banking logic from monolith to microservices based on AWS

### Software Engineer @ Square
Jan 2019 – Jan 2020
Cash App money infrastructure engineer


## Education
### Bachelor of Science - BS in Computer and Information Sciences, General
University of Washington


## Contact & Social
- LinkedIn: https://linkedin.com/in/sarah-z-66596198

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