Ricardo – Python, Kubernetes, AWS

An internal cloud platform that enables engineering and data teams to deploy applications, provision infrastructure, and run analytics workloads across more than 200 AWS accounts.

• Deployed and supported Databricks workspaces on AWS for internal tenants, establishinga Data Lakehouse architecture with Delta Lake and providing ongoing operational support for data pipelines and analytics teams
• Led the development of multi-region, multi-tenancy Kubernetes clusters, enhancing infrastructure resilience and monitoring, which reduced system downtime by over 100 hours annually and improved disaster recovery response times
• Managed over 200 AWS accounts, containing tenants within their accounts, to track costs and reduce the blast radius of AWS resources
• Built reusable GitHub Actions and Terraform workflows, reducing developers’ migration time by 80%, and enabling them to deploy services into Kubernetes and provision AWS resources efficiently
• Streamlined user authentication processes by implementing AWS SSO and Okta, leading toa 35% decrease in help desk tickets related to login issues and enhancing security posture organization-wide
• Optimized CI/CD processes by transitioning from Jenkins and CircleCI to GitHub Actions, reducing build failures by +200 incidents per year and cutting deployment times from 20 minutes to5 minutes on average
• Mentored 15+ engineers, fosteringa culture of excellence and contributing to an overall increase in team productivity
• Authored +30 comprehensive technical guides, significantly enhancing the platform’s self-service capabilities and user independence
• Decommissioned legacy systems with zero downtime, ensuringa smooth transition to modernized infrastructure

A high-traffic food and recipe website.

• Coordinated the seamless migration of the website using AWS services like CodePipeline and Fargate, halving deployment times and achieving 99.9% uptime while enhancing response times.
• Spearheaded the integration of Terraform to fully automate infrastructure and environment creation via CI/CD, eliminating manual configuration across 4 environments and reducing the risk of configuration errors.
• Enhanced system resilience by adding distributed load testing and performance regression tests, resolving scalability issues and leading to a 50% reduction in post-deployment incidents.

Mission-critical retail platforms supporting in-store point-of-sale, inventory, and warehouse workflows.

• Ensured stability and smooth operation of mission-critical retail systems, providing day-to-day support for in-store Point of Sale and inventory management applications
• Transitioned legacy back-end to Node.js microservices on Kubernetes, improving PoS response time from 2.5s to under 1s while maintaining system availability during migration
• Established observability and incident response processes with ELK stack, reducing average incident response times from 30 minutes to 2 minutes
• Implemented CI/CD pipelines using GitLab CI/CD, ensuring reliable deployments and increasing release frequency from monthly to daily

A scalable sports platform across web and mobile.

• Establisheda bespoke Node.js-based microservice architecture on Docker Swarm, enhancing service deployment efficiency and application scalability from the ground up
• Developed modern applications in React, ensuring robust front-end functionality and seamless user experience
• Implemented mobile applications using React Native, streamlining integration and modernizing the mobile platform
• Managed MySQL instances, optimizing data structures to cut query response times from 500 milliseconds to 50 milliseconds

Modernization of a major digital publishing platform, replacing a legacy WordPress website with a React-based application.

• Laid the foundation for the website using React, Redux, and GraphQL
• Successfully migrated from the legacy WordPress website to the new React-based platform
• Implemented GraphQL to streamline and optimize data fetching from the WordPress backend