Hello There,

I am John Rhyz Barrera Pulgar, a college student at Mapua University. I graduated in 2025 with a bachelor's degree in Information Technology. I grew up in Rosario in the province of Cavite in the Philippines with my mother and four siblings. My mother has been incredibly supportive of me in pursuing an IT course because of my passion for creating software applications and systems since the start of junior high school. With this, I gained experience creating programs from prominent programming languages such as Java, C++, C#, Python, and JavaScript/TypeScript throughout my junior high school years. I am always open to trying new projects and other things in life, as, for me, new experiences make the person knowledgeable and, thus, avoid committing the same mistakes in the future. Also, I am committed to finishing tasks with the utmost quality ahead of the deadline. Using the whole deadline duration could be more efficient, especially when those tasks are easy. Of course, I would make sure that I am learning about projects and tasks that I need to familiarize myself with because I am cautious, as I would not be on the same page with other team members. I am looking forward to meeting new people in my journey to be a successful person in life.

Overall, I am a dynamic Software and Web/3 Developer with over 3 years of experience designing scalable applications and decentralized solutions using Python, JavaScript/TypeScript, Solidity, Ethers.js, C#, Angular, and Go. Expertly integrated blockchain technology into NFT platforms at Hidalgo NFT, optimized LIMS onboarding with HTML, CSS, and Nunjucks at Dashlabs.ai, and developed a POS system for fish product management leveraging Hyperledger Fabric for distributed ledger security, ARIMA-based predictive sales analysis in Python, and AWS cloud infrastructure (including ECS, EKS, EC2, CloudFront,  S3, DynamoDB, SageMaker) for multi-platform desktop, mobile, and web applications. As a Cybersecurity Analyst, I leverage Google and NYU certifications to mitigate vulnerabilities and enhance IT infrastructure security per OWASP/NIST standards. Led teams on GitHub to deliver smart contract deployments, bug-free systems, and innovative projects like CFAIR, driving efficiency in fast-paced tech environments, as showcased in my GitHub repositories and E-Portfolio.

On that note, here is my resume (compact version) as a summary of my ePortfolio.