• Re-architected a monolithic NGINX-hosted web application into a distributed architecture using AWS CloudFront and API gateway. This included provisioning the new infrastructure with Terraform, updating CI/CD pipelines, refactoring application routing to the edge service, and configuring CORS policies—resulting in improved global availability, scalability, and fault tolerance.

• Migrated GraphQL service from ECS to Kubernetes, enabling scalable, observable, and resilient deployments

• Implemented automated CI/CD pipelines for QA releases with health-gated checks and rollback mechanisms, reducing deployment risk and accelerating release velocity

• Built REST APIs with Java Spring Boot to support white-label banking operations, handling account management and credit/debit transaction workflows

• Implemented Datadog monitoring and proactive alerts via Terraform to track application performance, detect anomalies, and reduce mean time to recovery

• Built an environment switcher component with React in the Marqeta dashboard to route API calls between sandbox and production, enabling in-dashboard sandbox access and improving customer onboarding velocity

• Rebuilt user access management for a web application by creating React forms and permission logic in GraphQL to enable flexible granular role management across the web application.

• Developed a responsive, pixel-perfect React interface for the Marqeta status page, providing intuitive, real-time visibility into the health of multiple products and services

• Rebuilt home, product, and landing pages using Shopify Liquid and CSS to match design specifications,

ensuring cross-browser compatibility and fully responsive designs

• Integrated Vue.js with Shopify to provide dynamic product descriptions and image galleries