Developed the payments system for the world's largest micromobility company, including integrations with Stripe, Braintree, Adyen, and other PSPs. Designed and built innovative solutions within a Ruby on Rails monolith to save more than $10m annualized in payment fees, and increased topline net revenue by more than $20m by implementing new fraud detection and prevention systems. Contributed to IPO readiness, cross-company AI adoption, and tax compliance initiatives. Worked closely with local operations in most of Lime's 30+ operating countries, integrated with new local payment methods, and led engineering excellence in technical design, code reviews, and long-term vision.

Developed an industry-leading maintenance and asset tracking system for state departments of transportation with Java, Golang, and React. Architected real-time synchronization of asset locations between backend systems and ArcGIS servers for a geospatial mapping application. Built custom features for multiple state DoTs that led to 5-10 year contracts and tens of millions of dollars in contract revenue.

Developed hospital quality reporting systems for the Centers for Medicare and Medicaid Services using Golang for backend APIs and Angular/TypeScript for frontend applications. Implemented a high performance pipeline for electronic clinical quality measures data with AWS Glue and Lambda.