# Xavier J. Cruz — Software Engineer & Cybersecurity

> Portfolio of Xavier J. Cruz, a software engineer from Puerto Rico who builds full-stack web applications (React, Astro, Node.js, Django) and works in cybersecurity (CompTIA Security+, AWS Certified Cloud Practitioner, ISC2 CC).

Before software, Xavier spent 8 years as a Medical Technologist after earning a Biology degree. He completed Holberton School's full-stack foundations and cybersecurity specialization. He is open to software engineering and cybersecurity roles.

## Main pages

- [Home](https://www.xavierjcruz.dev/): Overview, skills, featured projects and contact links
- [Blog](https://www.xavierjcruz.dev/blog): Articles on software development, AI tools and cybersecurity
- [Certificates](https://www.xavierjcruz.dev/certificates): Verified certifications and completed courses
- [My journey into tech](https://www.xavierjcruz.dev/blog/my-journey-into-tech): Career story from medical technology to software engineering

## Blog posts

- [How to Use AI Tools to Write Code Faster, Safer, and Smarter](https://www.xavierjcruz.dev/blog/ai-tools-faster-coding): From automated testing to smart styling and security checks — here's how developers are using AI tools to ship better code in less time.
- [Sentinel AK-XL: Building a Virtual SOC When Cybersecurity Training Meets Reality](https://www.xavierjcruz.dev/blog/sentinel-ak-lx-virtual-soc): How three cybersecurity students transformed academic theory into a production-grade Security Operations Center that bridges the gap between classroom learning and real-world threat detection
- [Twinglish: Building a Social Platform for English Language Learners](https://www.xavierjcruz.dev/blog/twinglish-journey): The story behind creating Twinglish, a Twitter-inspired app that helps non-native speakers practice English through AI-powered feedback
- [GenieMovie.ai: Building an Intelligent Movie Recommender with MCP](https://www.xavierjcruz.dev/blog/geniemovie-ai-journey): How I combined conversational AI, contextual memory, and a 60k+ movie dataset to create a smarter way of discovering films
- [My Journey into Tech: From Childhood Curiosity to Software Engineering](https://www.xavierjcruz.dev/blog/my-journey-into-tech): A personal story of how my lifelong fascination with creating and problem-solving led me from medical technology to software engineering and cybersecurity.
- [Tracking My Fitness Journey with Stepie](https://www.xavierjcruz.dev/blog/stepie-tracker-app): How a simple need to track my weight led to building a helpful app
- [DevTyping: How I Built a Tool to Improve My Coding Speed](https://www.xavierjcruz.dev/blog/devtyping-journey): The story behind creating DevTyping, a lightweight app that helps developers practice typing their own code snippets
- [Model Context Protocol (MCP): The New Standard for AI in 2025](https://www.xavierjcruz.dev/blog/model-context-protocol): Discover how the Model Context Protocol is revolutionizing AI systems by standardizing context handling across different platforms and applications.
- [AI Agents & Multi-Agent Systems: Transforming How Work Gets Done](https://www.xavierjcruz.dev/blog/ai-agents-multi-agent-systems): Explore how AI agents and multi-agent systems are revolutionizing task automation, problem-solving, and human-AI collaboration across industries.
- [Cybersecurity Basics: Essential Practices for Digital Protection](https://www.xavierjcruz.dev/blog/cybersecurity-basics): Learn the fundamental cybersecurity practices that everyone should know to protect their digital assets and personal information.
- [Rayminator: The Most Satisfying Way to Squash Bugs (Literally)](https://www.xavierjcruz.dev/blog/rayminator-3d-game): How I built a 3D game where you can blast bugs with lasers as the ultimate stress-reliever for frustrated developers
- [RepairMate: When Machines Break and Manuals Disappear](https://www.xavierjcruz.dev/blog/repairmate-troubleshooting-made-simple): How a medical technologist's frustration with broken lab equipment led to creating a solution that helps anyone troubleshoot machine issues quickly
- [Mind Over Matter: Building a Brain-Controlled Telekinesis Simulator](https://www.xavierjcruz.dev/blog/mind-over-matter): Discover how I built a system that lets you control physical objects using only your thoughts, creating the illusion of telekinesis with EEG technology.

## Certifications

- [CompTia Security+ (CompTia)](https://www.xavierjcruz.dev/certificates): Earners have the knowledge and skills necessary to perform core security functions required of any cybersecurity role.
- [AWS Certified Cloud Practitioner (AWS)](https://www.xavierjcruz.dev/certificates): This certification demonstrated cloud fluency and foundational AWS knowledge.
- [Certified in Cybersecurity (CC) (ISC2)](https://www.xavierjcruz.dev/certificates): Certification of succesfully completed Challenges.

## Profiles and contact

- [GitHub](https://github.com/Xavier308): Source code for all portfolio projects
- [LinkedIn](https://www.linkedin.com/in/xavier-jose-cruz/): Professional profile and work history

## Optional

- [Sitemap](https://www.xavierjcruz.dev/sitemap.xml): Full list of pages
- [Resources hub](https://resourceshub.doo.ee/): Roadmap trackers, cheat sheets and algorithm visualizers