RAG with LangChain
How to embrace LLM orchestration for your documents.
Qdrant vs AWS S3 Vector Store
My experience comparing the new AWS S3 Vector Store to Qdrant.
AI Chatbots: Giving relationship advice since 1966
How AI development have changed exponentially and when we should expect our robot overlords.
Software Engineering, Google Search
Improving Google Search for 2.7 billion users globally.
Large Language Models: For Non-Techies
LLMs translated for Non-Techie's. When to use what.
Belva AI: Building Voice Calling AI Agent
Developed voice calling AI agent with LLMs, speech recognition, and WebSockets.
Build Your Own Search Engine: Databases for AI
My experience with vector storage solutions for embeddings and similarity search in AI applications.
Dynamic Routing in LangGraph
Build decision-making AI with conditional paths.
Network Debugging: Ports to Packet Traces
My scripts and tools for diagnosing connectivity issues.
5x Yourself as a Developer: Git Worktrees + Claude Code
My guide to cloning yourself as a developer with AI.
10x my productivity with AI IDEs
My Journey Through Cursor, Replit, and VSCode
Faxion AI: Building an AI Fashion Platform
Architecting and leading the development of a groundbreaking AI fashion platform that reduced cloud costs by 80% and supports thousands of daily users.
Promptfoo: LLM Evaluation Tool
CLI tool for evaluating and comparing LLM prompts.
Testing LLMs
Approaches to LLM Evals.
Python Async Architecture: Real-World Experience
Async Python patterns are essential for scalable APIs, background processing, and real-world production systems that handle thousands of concurrent operations.
How I Built My Own MCP Server
MCP server for embedding free stock images in Claude Code.
MCPs: Enable LLMs To Work Like A Human
'Computer, update all my Jira tasks and create a PR on GitHub.'
User Metrics With Amplitude And NextJS
Quick guide for getting started with Amplitude and NextJS.
Belva AI: Building LLM Microservices Infrastructure
Developed API for LLM microservices using Python, FastAPI, and AWS.
Mount AWS EBS Volumes on Linux
Step-by-step guide to attach, format, and mount EBS volumes on Linux instances.
Raspberry Pi Motion Camera
Homemade internet-of-things private cloud motion-detecting camera.
Guest Speaker Xavier at Gonzaga University
Invited to speak at Gonzaga University about my career experience and provide advice to students.
Docker Image Storage Options
Comparison of Docker Hub, AWS ECR, Google Artifact Registry with my experience.
WiFi Penetration Testing with Aircrack-ng
Guide to WiFi security pentesting tools and mindset.
Bulldog Band
As the "Fungineer" of the Gonzaga University Bulldog Band, responsibilities include keeping morale up for the 80+ members on weekly trips nation for March Madness.
NextJS Portfolio Web Application
How I evaluated technical trade-offs and coded the website you're looking at.
Connecting to MCP Servers
Technical guide to connecting MCP servers with Claude Desktop and Cursor.
Faster In-Stock Alerts During COVID-19
Python, Firebase, and Selenium for building automated alerting service during COVID-19 supply shortages.
Measuring Tokens in LLMs
Tokens mean $$$ and how to measure them.
Cloudflared Tunnel: Network for Outbound-Only Traffic
Serving traffic for highly secure networks.
Docker Commands Cheat Sheet
Advanced learning and reference for Docker commands for containerization.
Claude Code Cheatsheet
Quick guide to using Claude Code from my experience.
LLM Leaderboards
Easily compare LLM models by performance, price, and more.
FastAPI: Build your own APIs
Production experience with FastAPI with code examples.
Prescription Blockchain
Sponsored and mentored a Gonzaga University student engineering capstone project.
Gonzaga Housing Web Developer Consultant
When I offered Web Development work in exchange for a room.
Dean of the Gonzaga School of Business' podcast
Weekly podcast hosted by Dr. Kenneth Anderson with guest Xavier Collantes.
Streamlit Data Visualization Cheat Sheet
Lessons I learned from using the Streamlit data platform.
Business Intelligence Engineer
My experience constructing a data pipeline responsible for $500 million in finance sales.
Licensed Ham Radio Operator
FCC licensed and learning uses of radio for computer security and other applications.
Meshtastic: Building LoRA Mesh Networks for Communication
Exploring off-grid radio software and hardware outside of internet or cellular coverage.
NextJS Web App Optimizations
Techniques I learned to optimize web applications for NextJS
Building a Kotlin App for Faxion AI
Experience in creating an Android app for the AI fashion platform.
Top MCP Servers
My playlist of useful MCP servers.
Space & Cowboys: How Star Trek and Rawhide Share the Same DNA
An analysis of the parallels between Star Trek and the western Rawhide, how the final frontier mirrors the American frontier.
Portfolio Easter Eggs
"So, pretty please... with sugar on top."