Jhon Karlo M.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Sep 24, 2026.

I build fast, scalable, and user-focused web and mobile applications for startups, small businesses, and enterprises. I’ve worked across Finance, Healthcare, Transportation, and SaaS, delivering solutions that improve performance, automate workflows, and help companies grow. Frontend Development - React.js, Next.js, Angular, Vue.js - HTML5, CSS3, SASS, Tailwind, Material-UI, Bootstrap - TypeScript, Redux, Global State, Component Architecture - Clean, modern, responsive UI/UX Backend Development - Node.js, Express.js, PHP (Laravel, Mason, CGI) - PostgreSQL, MySQL, Sequelize, Prisma - MongoDB, Firebase, Mongoose - REST APIs, GraphQL, Socket.io (real-time apps) ☁️ Cloud & DevOps - AWS & Azure (Certified Solutions Architect) - Docker, CI/CD pipelines - Cloud deployments, scaling, and migrations General Skills - JavaScript (ES6+), TypeScript - API integrations (Stripe, PayPal, OAuth, etc.) - Testing: Jest, Cypress - Clean code, maintainable architecture, best practices