● Realized $1M in accrued revenue from internally unresolved payment chargebacks ($5M in TPV)

● Served as a reviewer for TikTok's official engineering blog (TikTok for Developers)

● Delivered real-time fraud detection and insight support for LATAM payment transactions

● Led cross-functional team of 13 volunteers to activate TikTok's US Engineering HQ for office events

● Introduced regression testing into TikTok's payment chargeback infrastructure

● Convinced Product to prioritize sunsetting a legacy platform, after many delays

● Translated Portuguese language correspondence for the Chinese engineering leaders

● Introduced application-level health monitoring for TikTok's external vendor platform

● Led one workstream at the center of Quantum Leap, PayPal's top enterprise priority of 2023.

● Served as the sole Engineering Editor of the PayPal Technology Blog.

● Owned a high traffic component in PayPal's primary revenue center (64k TPS on 5.6k boxes).

● Introduced multi-cloud environments to PayPal for a bleeding edge pilot project.

● Led team of six engineers to safely migrate and decommission legacy C++ components from the 1990s.

● Authored training curriculum for new engineers and product managers in the primary revenue center.

● Mentored and trained senior engineers on their career development.

● Inspired another engineer to start learning Korean!

● Gave the #1 most-liked and #4 most-viewed internal tech talk in PayPal history, attended by 660 people.

● Led new team charter for PayPal’s primary revenue center to improve engineering best practices.

● Delivered the closing tech talk for one track of the semiannual PayPal Architecture Forum.

● Owned core platform that orchestrates $500M USD per year in transaction volume.

● Improved P0/P1 TTD from 1 hour to 15 minutes by introducing new leading indicators.

● Mentored and trained juniors and mid-level ICs to be promoted, and interns to be hired.

● Convinced another team to accept responsibility for a P0 Incident.

● Owned the primary revenue stream's maintenance and monitoring.

● Authored new training curriculum and onboarding system for Python development.

● Led and trained team of seven engineers.

● Saved Financial Analysts dozens of hours per month by automating their end-of-month book closing.

● Saved Customer Service from their most stressful task with a new self-diagnosis tool to detect availability issues,

● Created internal tool platform to resolve extraordinary requests from the company's largest customers.

● Bootstrapped automation for special, language-localized marketing e-mails for global customers.