About MaxwellSeefeld.org

MaxwellSeefeld.org is a living archive of high-performance infrastructure, secure systems, and applied engineering. Everything published here is tested, deployed, and refined in real environments—not theory, not fluff.

I'm Maxwell Seefeld—a DevSecOps engineer, penetration tester, AI developer, and systems strategist. My work spans everything from Linux hardening and self-hosted AI pipelines to red teaming, Zero Trust architecture, and full-stack automation.

This site isn’t a portfolio. It’s a technical command post. A place where I break down the decisions, trade-offs, and lessons learned building infrastructure for speed, reliability, and security. Whether I’m simulating an APT using MITRE Caldera, building hardened NixOS clusters, deploying quantized LLMs locally, or stripping down bloat from legacy CI/CD pipelines—this is where it all gets documented.

Philosophy

I build systems that don’t ask for permission. Secure by default. Minimal by design. Modular, composable, and fully auditable.

I don't rely on third-party platforms to protect what matters. I self-host. I isolate. I reduce trust wherever possible. This mindset extends to every part of my stack—whether I’m writing Rust, architecting secure tunnels through Cloudflare, or testing EDR bypasses with Caldera.

Most tech blogs regurgitate marketing gloss or echo what worked five years ago. This site is different. It’s focused on what works right now—under load, under fire, and under budget.

What I Focus On

🛠️ Linux Systems & Self-Hosting

Secure NixOS configurations

LXC-based container orchestration

Minimalist, reproducible environments

Infrastructure that favors sovereignty over convenience

☁️ Lean Cloud Engineering

Cloudflare Zero Trust routing

AWS minimal services (IAM, S3, EC2)

Self-hosted CI/CD and hardened DNS

Lightweight tunneling & edge deployments

🧠 AI & Local LLMs

Hosting quantized 13B+ models

Optimized inference pipelines on consumer GPUs

Rust/C integration for performance-critical AI tasks

AI agents built with real-time control, not SaaS lock-in

🛡️ Cybersecurity & Red Team Operations

Adversary emulation with Caldera & Atomic Red Team

Endpoint hardening and post-exploitation defense

EDR tuning and SIEM validation

Infrastructure-level red teaming for MSPs, law firms, and startups

⚙️ Programming & Automation

Systems-first software in Rust, Go, and C

Infrastructure automation (Terraform, shell, API-first workflows)

Security-focused backend architecture

Who This Site Is For

This site is written for:

Engineers who want real systems, not hand-holding.

Red teamers looking to automate attacks, emulate APTs, and verify controls.

Founders and CTOs building secure-by-default infrastructure without enterprise drag.

AI developers who care more about optimization and ownership than pushing prompts to third-party APIs.

If you value clarity, control, and velocity—welcome. You’ll find deep dives, code walkthroughs, infrastructure designs, and raw, firsthand insight into building and securing systems that matter.

What to Expect

Blog articles focused on practical value, not SEO tricks

Code snippets and full-stack examples meant for deployment

Hard opinions based on experience, not trends

Integration of security and performance at every layer

Continuous updates as I build out tools, pipelines, and internal architecture

Stay Connected

I don’t chase followers. I chase systems that work. But if you’re on the same wavelength, bookmark this site, check back often, or reach out directly if you want to collaborate, hire, or challenge the ideas you see here.

You can also catch updates on my projects at Y12.AI and Cyber Alamo—where the tools I build go into production.

—Maxwell Seefeld
DevSecOps Engineer | Cybersecurity Architect | AI Systems Developer