# Philip Chi

> Software Engineer

Location: Hayward, California, United States
Profile: https://flows.cv/philipchi

Hello friend, I’m Philip.
I’m a full stack / frontend engineer with 8 years of experience.
A skilled React developer proficient in several server-side frameworks. I enjoy writing clean code, building quality software, or just to make things work smoothly in general.

## Work Experience
### Senior Full Stack Engineer @ TikTok
Jan 2024 – Present | San Jose, California, United States

### Senior Front-End Engineer @ percipient.ai
Jan 2023 – Jan 2023 | Santa Clara, California, United States
❖ Used Typescript, React.js, and Django to build and maintain a tool that enables dozens of users to upload, select, and crop at least 1000 images per project.
❖ Designed and built Rest APIs with Django, such as providing an aggregated QuerySet as metrics for users’ project status. Ensured that APIs satisfy the latency requirement of 200ms.
❖ Pioneered the use of AbortController to cancel obsolete fetches requests. Reduced unnecessary state changes, consequently DOM changes , by 35% across the codebase.
❖ Created common React components used in over 40 files.

### Software Engineer @ Google
Jan 2020 – Jan 2022 | Mountain View, California, United States
❖ Collaborated with designers and data scientists to test how different presentations of Search features improve UX.
❖ Wrote technical design document for project, outlining deprecation, implementation, blockers, and A/B test plan.
❖ Led discussion with and leadership to gain their approval.
❖ Design protocol buffer that maps search result to feature proto. Implement frontend component using Google’s internal toolings to render the feature proto.
❖ Perform analysis on live experiment results with data scientists. Using the project - Replacing Appbar with Minibar for example, the live experiment covered 150 million unique users in 14 days.
❖ Experiment results showed no statistically significant changes in metrics, which is the hypothesis since the two components are similar in appearance.
❖ Enhanced the minibar by incorporating the new frontend soft-transitioning API, where navigating to the next query via Minibar tiles rebuilds the page on the client-side with protocol buffer from backend. Live experiment shows this enhancement reduced time to first click (ttfc) of the next query decreased by 3.00%
❖ Enabled Minibar to have a sort control when the data contains dates. Reduced manual refinement (manref) by 2.32% and further reduced time to first click (ttfc) by 1.59%.

### Software Engineer @ Upstart
Jan 2019 – Jan 2020 | San Francisco Bay Area
❖ Built a Ruby on Rails generator for promotional landing pages. This eliminated the need to write boilerplate
code on a weekly basis, saving 2-3 hours of development time per week.
❖ Changed the loan application form from slim (a RoR templating language) to React.js, implemented
frontend address validations, improved data quality that used to aect 6% of applications.
❖ Refactored the partner referral tracking API, to give credit to the last referrer before the loan was approved,
as opposed to the strictly last referrer.
❖ Queried the PostgresQL database with SQL and generated CSV reports to analyze referrals that were
wrongly attributed.
❖ Collaborated with the finance team to reconcile mistaken attributions, which recovered $4,000 of lost
revenue for a referral partner.

### Software Engineer @ SmartPay Leasing
Jan 2018 – Jan 2019 | San Francisco Bay Area
❖ Designed a restful API RTPOS (real time point of sale) to be used by the stores of a major mobile carrier.
❖ Implemented Ruby on Rails routes that conforms to the restful API.
❖ Designed and implemented relational data models to persist data sent to RTPOS, such as customer PII.

### Full Stack Developer @ True Link Financial
Jan 2016 – Jan 2018 | San Francisco Bay Area
❖ Collaborated with the CEO and Head of Finance to build an annuity planning demo, which ultimately helped
the company raise $16M in 2018, and the company now provides investment services.
❖ Although the application is meant to be a demo, it received 500+ users in the first month.
❖ Decided on a single page application (SPA) architecture with Ruby on Rails and React.js.
❖ Implemented data visualizations with Chart.js
❖ Customized Chart.js with vanilla JS to enable features such as drawing a draggable vertical line and
displaying its intersection with the original chart.
❖ Built a web crawler and scraped an external website for longevity data. User’s estimated longevity is
essential to annuity planning, and every API requires payment…
❖ Set up an email notification to the Head of Finance when a user creates an annuity plan.
❖ Deployed the application to Heroku.
❖ Deferred asking the user's email after the annuity plan is created.
❖ Created a script that generates transaction logs for our clearing house, on average, the total amount of
transactions per day is approximately $200k.
❖ Built an email notification system for fiduciaries notifying them when their clients’ balances are low.
Reduced workload on customer service by 25%.

### Full Stack Developer @ Rocksbox
Jan 2015 – Jan 2016
❖ Designed and built an automated collections system that periodically notifies the user with email and/or
text. The system recovered 5% of delinquent rentals in the first month.
❖ Built a shipment tracking service that utilizes USPS web tools, the service detects shipping and return
tracking by an average of 13.66 hours before EasyPost, the service our application previously used.

### Data Analyst @ Google Express via Adecco
Jan 2014 – Jan 2015 | Mountain View, CA
❖ Use Google’s internally developed business intelligence tools to monitor and analyze the performance of Google Express Operations team.
❖ Build, maintain, and interpret reports and dashboards to provide insights to Operations' performance across 9 geographic zones in the continental US that serves more than 2000 users.
❖ Optimize SQL queries and analyze very large data sets for Operations, Pricing, and Customer Support.
❖ Collaborate with Product, Engineering, and Business teams to identify key metrics for Operations.
❖ Conduct numerous ad-hoc analyses to support business decisions by market managers and team leads.
❖ Ensure the accuracy of more than 180 reports and key performance metrics which are updated 7 times daily.


## Education
### Bachelor of Arts (B.A.) in Applied Mathematics
University of California, Berkeley


## Contact & Social
- LinkedIn: https://linkedin.com/in/pchi17

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Source: https://flows.cv/philipchi
JSON Resume: https://flows.cv/philipchi/resume.json
Last updated: 2026-03-30