A clean, no-friction Pomodoro timer built in JavaScript. Grew to 1,000+ active users on a "do one thing well" philosophy — fast, free, and distraction-free. Sunset after a solid run.
visit timerfy →Dark-mode Vimmer
Mario Callejas
Senior full-stack developer with 10+ years of experience who enjoys exploring AI, security and DevOps. Shipped over 10 products across professional and personal projects.
#Personal products I've shipped (some)
Timeline-based web analytics that captured the full sequence of user interactions, not just aggregate clicks. Built on a distributed Node.js backend engineered to absorb heavy, bursty event traffic without dropping data. Grew to 3,000+ active users.
visit timelin9 →#Mini blog
Loading posts…
#Links
LinkedIn
— /in/mariothedevcom
Resume/CV
— resume.pdf
Email
— hi@mariothedev.com
Github
— mariothedev