Integrated a $2 million Visa partnership experience into the platform, offering exclusive benefits for Visa cardholders. Utilized React, TypeScript, Ruby on Rails, and GraphQL technologies.

Developed a JavaScript AB Testing framework enabling random variant assignment and automatic reporting, allowing statistically significant measurement of new feature impacts on key metrics.

Led a team of 5 developers through the design, implementation, and testing of the Node.js backend service, React frontend app, and GraphQL middleware to deliver speedrunbounties.gg.

Conducted a 6-week React and TypeScript training program for 30 software engineers, involving weekly sessions, assignments, activities, quizzes, and discussions.

Implemented Web Application Firewalls (WAFs) in front of AWS application load balancers, securing public-facing microservices and safeguarding against malicious requests.

Enhanced Vistaprint Design Studio load time performance by 40% by developing a Node.js microservice to centralize initialization logic, reducing TCP connections.

Launch React frontends and backend .Net Core microservices in several countries (Australia, Spain, Portugal, and more) for global Vistaprint experience update to replace the monolith platform.