• Played a pivotal role in the development of several key platform integrations i.e. Shopify and Wix. As part of the integrations platform team, I was responsible for the development of Mailchimp's platform capabilities that enabled the integration of Mailchimp with other platforms. This involved working with a wide range of technologies including React, Micro-frontends, PHP, Go, third-party APIs, and MYSQL, at scale.

• Technical lead for Wix, Shopify, Nuvemshop and Tiendanube integrations which required cross-functional collaboration between design, engineering and management, launched successfully and on time.

• Accelerated development time by liaising between Intuit and Mailchimp teams to onboard AppFabric (Intuit’s micro-frontend technology) with Mailchimp’s platform. Launched three integrations within six months.

• Technical lead for a third-party app marketplace referral flow that enabled Mailchimp to increase their paying customers.

• Worked on the Mailchimp stores product, which included a custom integration with Stripe to onboard merchants.

Member of the core contributors team for Reaction Commerce, an open-source e-commerce platform. I was responsible for building the core system and the admin interface, which was built using Meteor, Node.js, and React, NextJS. I also worked on the development of the GraphQL API, which was built using Apollo and GraphQL.

Collaborated with open-source developers across the world to integrate their contributions into the Reaction Commerce platform.

Built user interfaces for domain brokers and reporting tools for domain brokers and customers. We used the latest front-end technologies, including ReactJS, Flux(a Redux like pattern), HTML5, CSS3, LESS and Webpack.

Played an integral part in implementing internationalization and implementation of react component testing using the Jest testing framework.

Built visualization assets such as graphs and charts using HighchartsJS to help customers and domains brokers visualize data and make better decisions.

Developed a blogging system using the latest web technologies, including ReactJS, GraphQL, Apollo Client, Server Side Rendering, Express, Node, ES6, Docker, Docker Compose container orchestration, Docker private Registry, microservices, REST, Webpack and WordPress. The project's goal is to provide a way to build modern web UIs that integrate with WordPress' REST API. The code can be viewed here: github.com/willopez/NoomaPress

Built a system to track a patient’s tests progress in a clinical lab. The system was used internally to complete all clinical steps and was integrated with reporting and sequencing systems.

Built a RabbitMQ integration to sync data between the tracking system and a legacy system.

The system was built on a LAMP stack and I pioneered the introduction of ReactJS to our team.