# Yangyang Herrera

> Senior Software Engineer | Payment Nerd @ Linktree

Location: Los Angeles, California, United States
Profile: https://flows.cv/yangyang

Business first:
- I do not give referrals to people I haven't worked with.
- If I don't know you, please attach a message with your connect request.

Now the self-intro blob:
I spent my teen years in China and found passion in engineering and entrepreneurship.

I spent my 20s cycling. I owned and ran a bike shop, and I worked on national races. It made me humble, resilient, and resourceful.

I am working hard at honing my software engineering chops at a rockstar tech company. I am passionate about building scalable and maintainable products.

The best gift for me will be a decked-out camper van so that I can live as a tech nomad and work from national parks. A warmed chocolate croissant will work too.

When I am not generating code, you will find me hitting a green ball back and forth, pretending to be a frog in the water, or in a tent in the middle of nowhere.

## Work Experience
### Senior Software Engineer, Subscriptions & Payments @ Linktree
Jan 2024 – Present
Series B Link-in-bio unicorn with 200+ employees globally

- Core contributor on the Payment Foundation team, supporting ~$70M in annual subscription revenue across global payment flows.
- Architected and led the end-to-end price migration for ~4M existing customers, contributing to a 26% ARR increase to date.
- Defined and drove adoption of the core conversion metric (checkout → paid), guiding growth experiment decisions and $6.7M+ in incremental impact
- Led integration with a third-party invoice recovery provider, generating $1.4M in incremental annual revenue through improved dunning and recovery rates.

### Software Engineer, Warehouse @ Gopuff
Jan 2022 – Jan 2024
Series H digital delivery service startup with ~15k employees globally

- Worked on the Warehouse team, handling 100K+ outgoing orders and $200K+ inbound inventory daily
- Led projects from discovery to launch, designed solutions with cross-functional teams, enabling network-wide features such as in-store pickup and line-item substitution, generating ~$250M annually
- Suggested and implemented feature enhancements, such as first-expire-first-out validation, saving ~$2M annually in damaged and expired goods
- Achieved 99.9% uptime and <100ms P90 latency for critical services by improving integration tests and system performance

### Software Engineer, Payments @ Riot Games
Jan 2020 – Jan 2022 | Los Angeles, California, United States
Privately owned video games and entertainment company with 4k+ employees globally

- Worked on the Payment team, handling 200k+ transactions daily via web, mobile, and console
- Led mobile payment service development, enabling worldwide mobile game monetization, generating ~$120M annually
- Improved test coverage by ~30%, reduced system downtime due to released bugs by ~90%, preventing ~$1M annual revenue loss
- Coordinated mobile payment service transfer to the Mobile team, freeing 3 engineers for specialized tasks

### Full Stack Engineer @ Retina AI
Jan 2019 – Jan 2020 | Santa Monica, California, United States
Series A data science startup with ~15 employees

- Owned development and deployment of three web applications, enabling ingestion of 100M+ rows of customer data and product demoing
- Developed D3 data visualization tools, streamlining sales deck creation for the data science team
- Set up and maintained unit tests and integration tests, increasing development and deployment confidence

### Web Developer @ CreativEngine
Jan 2018 – Jan 2019 | Greater Los Angeles Area
Government contractor with ~10 employees building web-based tools for the legislative branch

- Rewrote and migrated a legacy ColdFusion application to Node.js on OpenShift in under a year with a small team
- Enhanced module reusability and maintainability by leading frontend development and migrating CSS to SCSS

### Business Owner @ Tender Loving Cycle
Jan 2013 – Jan 2017 | Greater Los Angeles Area
- Nurtured, built, and grew a dream into a profitable, six-figure business
- Personally recruited, managed and trained our service team (4.5 stars on Yelp and 4.7 stars on Google)

### Level 3 Race Mechanic @ USA Cycling
Jan 2012 – Jan 2016 | United States
- Provided technical support to 14 international-level races including Tour of Utah and Tour of California
- Race team member of professional US athletes including Ted King and Mara Abbott (2016 Olympian)


## Education
### Computer Programming
42 Paris

### Civil Engineering
UCLA

### ENGINEERING
Santa Monica College


## Contact & Social
- LinkedIn: https://linkedin.com/in/thewrenchess
- Website: https://usemotion.com/meet/yangyang-herrera/quick-chat

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