Jer Carlo Catallo
Full-Stack Developer
5 years and 9 months building secure, scalable web, IoT & NextGen Kiosk solutions
Passionate about building robust, secure systems that serve thousands of users worldwide. Specializing in Full-stack development and Application security across healthcare, finance, government, and IoT ecosystems. I learn by doing, documenting every solution, every optimization, and every security best practice.
I'm a Full-Stack Developer currently at meldCX, where I turn complex challenges into practical, scalable, and secure solutions. With 5 years and 9 months of experience, I've built systems that serve thousands of users across healthcare, finance, government, and IoT sectors.
My expertise spans modern web technologies, application security, and API development. I focus on creating applications that are not only functional and performant but also secure, maintainable, and scalable for long-term success.
As a philomath, I embrace continuous growth as both a professional principle and a personal way of life. With the right tools and mindset, I can take on any challenge, even those beyond my current skill set.
What I Specialize In
Full-Stack Development
Building secure end-to-end solutions with modern frameworks, RESTful APIs, and responsive interfaces. Expertise in React, Next.js, Node.js, and scalable backend architectures with security best practices.
Application Security
Building defensible architectures with threat modeling, secure coding, and hardening by default. Emphasis on input validation, least privilege access, secrets hygiene, and continuous vulnerability remediation throughout the application stack.
Research and Development
Evaluating emerging frameworks, platforms, and third-party services to improve delivery speed and product quality. Focused on proof-of-concept work, integration planning, and long-term maintainability.
My Journey
My tech journey began at my family's internet cafe, where playing games like Counter-Strike 1.6 and Red Alert quickly evolved into building and maintaining the computers themselves. Guided by my family's support, I channeled this curiosity into Computer Science. I approached my studies with intense drive, graduating as High School Valedictorian and earning multiple awards at Don Honorio Ventura Technological State University. Eager to make an impact, I launched my professional career during my freshman year. Today, I am committed to continuous learning by constantly exploring modern web technologies, scalable architectures, and security best practices to build purposeful, secure solutions.
Beyond the Code
Outside of tech, I still nurture a childhood love for astronomy, regularly exploring the cosmos with my Newtonian telescope. I also play chess, where strategic thinking mirrors my problem-solving approach to cybersecurity, and I play the piano, creating recreational music with my MIDI controller to balance discipline with creativity. I deeply value compassion and responsibility, traits reinforced daily by my faith and my beloved cats and dogs. These core values shape my commitment to integrity and care in both my life and my work.
Why Full-Stack Development?
Full-stack development allows me to see the complete picture. From crafting intuitive user interfaces to architecting robust backend systems, I thrive on understanding how every piece fits together. I believe great products require seamless integration and security at every layer. By leveraging modern frameworks and cloud infrastructure, I focus on building end-to-end digital experiences that are fast, reliable, secure, and delightful to use.
Philosophy & Approach
Core values that guide my work and growth
Continuous Learning
As a philomath, I believe knowledge is limitless. Every challenge is an opportunity to learn, grow, and become better equipped to serve others.
Security First
Security is woven into every stage of development. From secure coding practices to infrastructure hardening, I build applications that protect users and their data from day one.
People-Centered
Technology serves people. Behind every system are real individuals deserving protection, privacy, and peace of mind.
Innovation & Impact
Combining creativity with security to build solutions that don't just work. They make a meaningful difference in people's lives.