# Stephen Hei

> Deployment @ Peregrine | ex-Mastercard

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

## Work Experience
### Forward Deployed Engineer @ Peregrine
Jan 2025 – Present | San Francisco, California, United States

### Consultant, Business Experimentation @ Mastercard
Jan 2024 – Jan 2025 | San Francisco, California, United States

### Associate Consultant - Business Experimentation @ Mastercard
Jan 2022 – Jan 2024 | San Francisco, California, United States
- Utilized transaction-level payments data to quantify the impact of personalization strategies, improving paid customer retention through loyalty program optimization
- Designed and analyzed in-market experiments to test strategic hypotheses, driving over incremental revenue through new product offerings, targeted promotions and operational changes
- Constructed custom expansion and loyalty capture strategies using machine learning to build propensity models for identification of high-value customers
- Engineered and optimized complex ETL pipelines to enhance analytical capabilities while reducing server resource demands

### Business Analytics Intern @ Xenon Health
Jan 2021 – Jan 2021 | Los Angeles, California, United States
•	Developed and deployed interactive data visualization dashboard to evaluate the performance of marketing campaign spending
•	Advised on spending and expansion protocols based on marketing and operational efficiency analyses
•	Leveraged Facebook/Google ad data to inform SEO, marketing, and recruiting strategies

### Business Development Intern @ Xenon Health
Jan 2020 – Jan 2021 | Los Angeles, California, United States
•	Managed a team of technical writers producing informative content for company websites + social media accounts
•	Worked directly with CEO to expand service offering and develop concrete go-to-market strategies
•	Built an API and data pipeline to retrieve and tidy client data for downstream acquisition and retention processes
•	Trained new hires on internal procedures and CRM software

### Research Intern @ Nick of Time Foundation
Jan 2019 – Jan 2021
•	Aided in patient data collection and entry into RedCap database
•	Analyzed trends in patient data to investigate relationships between cardiac diseases and demographic/physical attributes
•	Wrote and refined data processing pipeline for use in large scale analyses


## Education
### Bachelor of Science - BS in Bioengineering
Caltech


## Contact & Social
- LinkedIn: https://linkedin.com/in/stephen-hei

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Source: https://flows.cv/stephenhei
JSON Resume: https://flows.cv/stephenhei/resume.json
Last updated: 2026-04-05