I built the core backend GraphQL service and internal data transformation services. I later joined frontend React Native development, and help unlock development bottlenecks by introducing a Design System and componentized frontend. I also helped developing the video transformation pipelines.

StartEngine was in the transition of moving from a legacy Ruby On Rails based monolith to microservices architecture. I helped them maintain the legacy app while providing advises the new architecture. I provided appropriate and timely support to keep the fragile legacy app running smoothly, avoided revenue loss from frequent down times.

I helped PeerStreet build a critical investment distribution system. This system contained very complex business rules and made wire transfers. I worked closely with product and stakeholders to ensure the system was reliable, correct, and maintainable. I also introduced the idea of a Design System for faster frontend development.

ProducePay was planning on expanding their market into produce trading. I was tasked to create a trading platform for farmers and brokers. The project already had some existing code written. I helped to transition the backend from RESTful API to GraphQL. I also introduced MaterialUI as a design system to enable fast frontend development.

I was tasked to design an event based microservices architecture as a company standard. I designed this system using RabbitMQ and Ruby based custom microservice framework. I then helped team transition their TimePlus Timecard service to the new framework. I also split out Authentication into its own microservice.

I helped ListApp launch their first Web and iPhone App. I was tasked to maintain, expand, and scale the backend service to meet the increasing demand of a public launch. I was also in charge of DevOps related tasks such as provisioning AWS with Terraform, dockerizing existing services, and integrate monitoring, security, and altering.