# Jay Choi

> Software Engineer @ Chime

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

full stack developer at Chime

## Work Experience
### Software Engineer @ Chime
Jan 2024 – Present | San Francisco Bay Area
Took ownership of a short time-bound referral incentive and helped evolve it into a reusable framework supporting repeatable campaign launches.

Implemented backend validation logic for referral payouts, introducing a card-activation requirement that significantly reduced fraud exposure.

Contributed to an experimental tier-based referral benefits (Chime+), building dynamic reward handling based on membership state with CRM and mobile integration.

Improved monitoring and reliability of referral services through enhanced observability and alerting.

### Software Engineer Intern @ Chime
Jan 2023 – Jan 2023 | San Francisco Bay Area
May 2023 - November 2023

Developed a user onboarding status tracking endpoint and integrated with the app and Datadog. Serving ~600k users monthly, the endpoint resolved ~5% of false data reports for user onboarding status

Engineered a dynamic card image generation for a screen accessed by ~500k users per month. Collaborated across teams to integrate external APIs, enabling conditional display of card content based on user attributes

Implemented waitlist rank update logic for Chime’s recent product. Introduced endpoints to update database and integrated SQL update logics to data pipeline based on user attributes pulled from Snowflake

Led testing initiatives for multiple features, creating comprehensive testing plans. Spearheaded bug bash sessions, ensuring smooth deployments to QA and production environments

### Software Engineer Intern @ Upduo
Jan 2022 – Jan 2022 | San Francisco Bay Area
Redesigned Upduo's mobile/web application's scheduling API

Assisted engineers making transition of codebase from RestAPI to GraphQL

Implemented UI changes/fixes in collaboration with Product/Design teams


## Education
### Bachelor of Arts - BA in Data Science
University of California, Berkeley


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

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