• Working on Postgres, Dynamo, Redis, memcached and other datastores

• Previously worked on the automations team building full-stack features in Typescript / Node / React

• Architected and led the rebuild of Shopify Point of Sale (POS) checkout, which unlocked a 10x gain in checkout throughput. This system powers millions of dollars in purchases at retail stores daily.

• Built a resilient payment processing system based on Stripe Terminal, which facilitated the expansion of Shopify POS to 9 countries in less than 18 months.

• Led a project to extend POS functionality through integrations with third party apps. Coordinated with external developers culminating in a launch with 4 official integrations from Shopify Partners.

• Mentored senior and junior engineers via pair programming, code reviews, and career conversations that resulted in two promotions and increased confidence and autonomy of the mentees and team as a whole.

• Reviewed and guided technical proposals from adjacent teams to promote engineering excellence and influence the direction of the organization.

• Developed a service to synchronize catalogs of over 500k products between an offline SQLite store and online MySQL server. Reduced the time between login and first transaction to a few seconds and made it possible for merchants with large catalogs to use Shopify POS.

• Identified and optimized performance critical network requests using stack profiles, custom dashboards, and MySQL optimization techniques, which improved p90 request times by an average of 95%.

• Improved incident response quality by upgrading automated alerting, dashboards and playbooks.

Built Syrup, a tool that generates type-safe Swift, Kotlin, and TypeScript from static GraphQL operations and schemas. Powered the API layer for all major mobile apps at Shopify comprising over 1.25m daily users.

Established a system to support deep linking into Shopify's flagship mobile app.