SYSTEMS ADMINISTRATOR · BUILDER

Understand it.
Build it.
Make it work.

I’m Angel. I work across Linux, infrastructure automation, and applied AI—following problems from the underlying system to the thing people actually use.

Explore my work

01 / SELECTED WORK

Built from real problems.

Systems, tools, and a small
experiment in quiet software.

APPLIED AI / KNOWLEDGE SYSTEMSIn development

A knowledge base
that can answer back.

Connecting Wiki.js documentation to an AI retrieval layer, with a working keyword-search foundation and a semantic search index taking shape.

Wiki.js
GraphQL
MCP
PostgreSQL
pgvector

RETRIEVAL ARCHITECTURE v1 → v2

KNOWLEDGE SOURCEWiki.jsMarkdown documentation

RETRIEVAL INTERFACEMCP serviceKeyword retrieval working

SEARCH INDEXPostgreSQL + pgvectorChunks & embeddings

Separate service boundaries for the knowledge source and retrieval index.

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The problem

Useful documentation needs to be retrievable from an assistant without giving the model unrestricted access to the systems behind it.

My approach

Connect Wiki.js through its GraphQL API and an MCP service. Keep the retrieval index separate, with header-aware chunking as a baseline and restricted tool access.

Working now

Keyword retrieval is working. PostgreSQL and pgvector are running, with vector similarity queries verified.

Complete a small semantic-retrieval demo, then evaluate retrieval quality and indexing choices before scaling the document collection.

PROJECT / 02Working foundation

INFRASTRUCTURE AUTOMATION

Repeatable operations
with AWX.

AWX on k3s, backed by external PostgreSQL, with parameterized workflows and reporting.

AWX
Ansible
k3s
PostgreSQL

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The work

Built the automation environment and resolved deployment issues across firewall rules, RBAC, proxy behavior, and service startup.

Result & next steps

Executed a working AWX workflow and developed a variable interface with reporting. Scheduling is a next step.

PROJECT / 03Working foundation

LINUX & SELF-HOSTING

Infrastructure,
from the ground up.

A hands-on environment for running services, troubleshooting Linux, and understanding the full stack.

RHEL
Podman
Nginx
Proxmox

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The work

Run Wiki.js with rootless Podman and a reverse proxy. Work through SELinux policy, filesystem ownership, and systemd user-service behavior to bring services into a stable state.

Ongoing practice

Use a Proxmox home lab and a RHEL guest to explore administration, service boundaries, and Linux internals.

PROJECT / 04Working prototype

ANDROID / AMBIENT SOFTWARE

Capybara Stay.
Just there.

A quiet home-screen companion. No streaks, obligations, or penalties for leaving it alone.

Android widget
Ambient interaction
AI-assisted build

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The idea

“He isn’t waiting for you. He’s just there.” An ambient pet with subtle state changes and a simple boop interaction.

My role & result

Defined the experience and interaction principles, then used AI-assisted development to build it. Installed the widget on Android and verified the boop interaction after a fix.

02 / THE OPEN NOTEBOOK

Still asking
questions.

What I’m studying, testing, and building toward.

LAST UPDATED / SEPTEMBER 2026

01 / STUDYIn progress

Security, from the system outward.

Working through Kali Linux Revealed and legal lab practice, building on systems administration experience. Exploring Linux internals and reverse engineering.

Cybersecurity / Linux internals

02 / BUILDIn progress

From keyword search to semantic retrieval.

Turning the working knowledge-retrieval foundation into a small, testable AI demo before deeper experimentation with embeddings and indexing.

Applied AI / Retrieval quality

03 / RESEARCH DIRECTIONExploring

Models of systems that change.

Studying the mathematics behind hybrid dynamical systems and digital twins, with an interest in Hamiltonian methods, Lie groups, and invariants.

Simulation / Mathematics

03 / BACKGROUND

An administrator’s grounding.
A builder’s curiosity.

My background is in systems administration, across Windows and Linux environments. I work with identity, virtualization, services, and automation—and I like understanding why a system behaves the way it does.

That foundation now feeds my work in AI, security, and simulation. I’m interested in tools I can inspect, experiments I can test, and systems I can keep improving.

Tools I work with

Systems: Linux · RHEL · Windows Server
Proxmox · VMware · Podman
Automation: PowerShell · Python · Ansible
AWX · k3s
Knowledge & AI: PostgreSQL · pgvector · Wiki.js
GraphQL · MCP

Selected credentials

CompTIA Security+
PCEP — Certified Entry-Level Python Programmer
MCSA: Windows 10

Understand it.Build it.Make it work.

Built from real problems.

A knowledge basethat can answer back.

The problem

My approach

Working now

Next

Repeatable operationswith AWX.

The work

Result & next steps

Infrastructure,from the ground up.

The work

Ongoing practice

Capybara Stay.Just there.

The idea

My role & result

Still askingquestions.

Security, from the system outward.

From keyword search to semantic retrieval.

Models of systems that change.

An administrator’s grounding.A builder’s curiosity.

Tools I work with

Selected credentials

Understand it.
Build it.
Make it work.

A knowledge base
that can answer back.

Repeatable operations
with AWX.

Infrastructure,
from the ground up.

Capybara Stay.
Just there.

Still asking
questions.

An administrator’s grounding.
A builder’s curiosity.