# Yumin Hui

> Software Engineer at Sofar Ocean

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

I am a front-end focused full-stack software engineer. 
TypeScript and React are my second nature, and I love making things pixel perfect.

## Work Experience
### Software Engineer @ Sofar Ocean
Jan 2022 – Present | San Francisco Bay Area

### Software Engineer @ Nava
Jan 2020 – Jan 2022 | San Francisco Bay Area

### Software Engineer @ Opendoor
Jan 2018 – Jan 2020 | San Francisco, California, United States
Opendoor offers an online home-selling service that aims to streamline the sales process. We provide products for sellers, buyer and agents.

I worked for the Seller Experience team with a focus on onboarding and offer experience

- Built multiple consumer-facing web apps end-to-end from design to development to cross-browser testing using React, Typescript, and GraphQL
- Developed new features through A/B testing and phased rollouts to key markets that significantly improved KPIs such as conversion rate by up to 10%
- Contributed to the internal UI design system library which was used by the entire Sellers (25+) eng team

Before Seller Experience, I worked on the Home Services team, serving our operators to do their jobs efficiently

-  Developed a dashboard to allow contractors to access internal data, used by 15+ contractors daily and saved the business 30% in costs
-  Automated MLS listing status update using server-side JS leading to 10x improvement in speed

### Software Engineer @ Surge Price Service
Jan 2017 – Jan 2017 | San Francisco Bay Area
Uber internal API clone based on real-time supply and demand.

• Designed service-oriented architecture with decoupled micro-services to ensure stability, flexibility, and scalability
• Built service gateway using AWS load balancing and Node clusters to support 100 simulated user requests per second.
• Utilized AWS SQS and REST API for high-throughput, low-latency inter-process communication between services.
• Created caching layer to reduce response time from 500ms to less than 1ms
•  Visualized simulated data with Elastic Search & Kibana

### Software Engineer @ FitBud
Jan 2017 – Jan 2017 | San Francisco Bay Area
Social app for finding fitness buddies.
✦  Implemented local & Facebook authentication w/ Passport for easy sign-up
✦  Built modular front-end components w/ React for instant response & flexibility

### Manager Assistant @ Seesaw Coffee
Jan 2012 – Jan 2013
✦   Managed online sale platform & conducted promotion through social media
✦   Organized daily administration

### Financial Planner @ China Life Insurance (Overseas) Company Limited
Jan 2008 – Jan 2010 | Shanghai City, China
✦   Designed plans matching clients’ financial needs
 ✦   Coordinated w/ business partner to increase sales volume


## Education
### Hack Reactor
Jan 2017 – Jan 2017

### Bachelor's degree in Philosophy
East China Normal University
Jan 2003 – Jan 2007


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

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Source: https://flows.cv/yumin
JSON Resume: https://flows.cv/yumin/resume.json
Last updated: 2026-03-29