Selected work

Experiments, applications and systems shaped by real needs. Each row expands with what was built and the skills it developed.

08 projectsInfrastructure · Software · AI · Leadership

Click a row to expand

A Proxmox-based environment for virtualization, self-hosting, network segmentation, media, DNS filtering, smart-home automation and hands-on security practice. It is where I rehearse enterprise administration outside of work.

Segmented VLANs behind pfSense with firewall policy between zones
Windows Server domain controller with Active Directory, DNS and DHCP
Pi-hole DNS filtering, Jellyfin media, Home Assistant automation
Linux and Windows virtual machines for lab work and testing

Skills developed

Proxmox VEpfSenseVLAN designActive DirectoryLinux administrationBackupsDocumentation

Tour the lab

arnold@lab:~$ pvesh get /nodes/pve/qemu
● pfsense    running
● win-dc01   running
● pihole     running
● jellyfin   running
● homeassistant running
arnold@lab:~$ _

A beginner-friendly study app I built for my Marine Corps unit. It connects publicly releasable communications material with practical labs, troubleshooting practice and civilian technology career paths.

Learning tracks for network administration, data systems, cyberspace and transmissions
168 lessons, 233 questions, 26 fault scenarios and 135 flashcards
Fault Finder, Subnet Drill, Cable Lab, Packet Walk, quizzes and command references
Installable on a phone with offline study and progress saved on the device

Skills developed

JavaScriptPWA / service workersOffline storageCurriculum designUX for beginners

Open Field Deck

As a Cloud Engineer Intern I designed and deployed user-tuned Microsoft Copilot and Copilot Studio agents for business teams, reaching more than 1,000 employees, and assisted with Model Context Protocol connector development to extend AI access to internal tools and data.

Agents built around team-specific knowledge and use cases
MCP connectors into internal tools, data and enterprise workflows
Company-wide Copilot guidance, enablement materials and communications

Skills developed

Copilot StudioModel Context ProtocolPrompt engineeringResponsible AITechnical writingStakeholder communication

Read the experience

A responsive application built for a family food truck business. It simplifies menu updates, order intake, pickup scheduling, SMS order updates and basic reporting.

Menu and pricing management for nontechnical staff
Order flow designed for low bandwidth and intermittent connectivity
Firebase for deployment and PostgreSQL for structured records and reporting
Phone-first interface for use at the truck

Skills developed

FirebasePostgreSQLResponsive designSMS integrationRequirements gathering

Open live demo

A console tool created for the rental business to estimate a fair daily price per jet ski for delivery-based rentals. The model uses distance, rental quantity, days, team size and labor time to calculate total expense and a recommended price.

Models fuel, wages, vehicle wear, rental fuel and equipment depreciation
Applies a profit factor to the full trip expense
Provides the full expense and daily price per ski

Skills developed

C++Cost modelingCLI designUnit economics

Download C++ source

Try the model

Miles to customer Jet skis Rental days Team members Hours per person

A resident-style professional military education seminar that bridges initial training and unit-level education. The curriculum emphasizes ethos, core values, guided discussion and ethical leadership.

Group discussion, scenarios, peer teaching and guided reflection
Ethos, traditions, core values, and leader and follower dynamics
Practical leadership repetitions tailored to lance corporals

Skills developed

Curriculum designFacilitationEthical leadershipInstructional writing

Open seminar PDF

A comprehensive employee handbook that standardizes service quality and safety across the team through clear onboarding, daily routines, booking workflows and incident response guidance.

Mission and values that align team culture and standards
Certification requirements, shadowing and role training
Opening and closing routines, fueling, maintenance, booking and return workflows
Safety, emergency, river condition and documentation protocols

Skills developed

Operations designSafety managementTraining systemsDocumentation

Open handbook PDF

Technical notes and diagrams that make subnetting, routing fundamentals, common configurations and troubleshooting practices easier to apply and explain. The notes turn lab practice into a reusable reference for network design, configuration and communication.

Skills developed

SubnettingRouting fundamentalsCisco IOSTroubleshootingTechnical diagrams

Available for new projects

Want to build something together?

I take on web design and agentic automation work through Moto WebWorks, and I am open to cloud, security and networking opportunities.

Contact me Download résumé