Chris Borrero

Led full-stack delivery of cloud-native healthcare applications using MERN and TypeScript, reducing lead time for changes by 35% and doubling release frequency. Designed and implemented RESTful and GraphQL APIs using Node.js and Express.js; optimized MongoDB and PostgreSQL queries, reducing P95 API latency from 750ms to 380ms. Built dynamic React.js interfaces with SSR, Redux, RxJS, Hooks, and Tailwind/Material-UI, improving clinician task completion rates by 20% and reducing page load times by 30%. Integrated payment gateways, EHR APIs, and internal SaaS platforms, reducing manual workflows by 40% and operational errors by 25%. Mentored six developers on MERN, TypeScript, testing, and code quality, reducing onboarding time by 45%. Automated CI/CD pipelines with GitLab CI/CD and Jenkins; containerized deployments using Docker and AWS EKS, reducing deployment time from 30 minutes to 8 minutes.

Developed microservices-based social media features using MERN and TypeScript to support high-volume, real-time interactions. Built interactive user interfaces with React.js and Angular using Redux, RxJS, Hooks, and SSR, reducing initial load times by 35%. Managed MongoDB and Redis caching strategies, reducing hot-path database load by 25% and stabilizing P99 latency. Enhanced observability through logs, metrics, and traces, reducing incident detection time and MTTR by 32%. Mentored junior developers and improved review turnaround times by 22%.

Delivered enterprise full-stack applications using MERN and JavaScript, reducing development cycle time by 25%. Built React.js and Angular dashboards with Redux, RxJS, Hooks, and SSR, improving load times by 28%. Optimized PostgreSQL and MySQL queries and indexing strategies, reducing long-running queries by 40%. Automated CI/CD pipelines with Jenkins and GitLab; deployed containerized applications on AWS and Heroku, reducing rollback incidents by 50%.