Matthew Deiter

Electronics Technician II

Tobyhanna Army Depot (IAMAW) | Dec 2007 - Present

Over 18 years of experience conducting precision operational tests and complex repairs on critical military electronic systems. Responsible for maintaining strict ISO 9001 compliance and audit readiness.

Network Security and Segmentation

Designed and implemented a multi-VLAN home lab environment to isolate IoT devices from core infrastructure. Configured secure remote access using encrypted tunnels and reverse proxies.

Self-Hosted Meta-Search Engine

Deployed a privacy-respecting SearXNG instance on self-managed infrastructure, exposed publicly via Cloudflare Argo tunnels with zero-trust Access policies and per-IP rate limiting. Aggregates results from multiple search engines with no tracking, no ads, and no user profiling.

Advanced Linux Administration

Maintain and optimize Arch-based systems (CachyOS) with Btrfs filesystems. Implemented automated snapshot regimes and developed Bash scripts for system hardening.

B R Linwell Enterprises

Built and deployed brlinwell.com for B R Linwell Enterprises, an athletic equipment installation and maintenance company. Site runs on Astro with the Cloudflare adapter, deployed to Cloudflare Workers. Configured Cloudflare for SaaS to provision the custom hostname with automated TLS, plus Access policies to protect it.

Trackside Coffee

Designed and built the site for Trackside Coffee. Dual-stack architecture: a static Astro storefront paired with a self-hosted WordPress/WooCommerce shop, both containerized behind a shared Nginx proxy.

IronMail

Self-hosted email platform at ironmail.dev, running on Mailcow. Beyond the deployment itself (DNS, TLS automation, DKIM/SPF/DMARC, mail routing, a relayed outbound path, and nightly automated backups), designed and built a custom dark "oxidized-iron" theme for the SOGo webmail client — replacing the stock login and inbox styling with a cohesive rust-and-charcoal palette, custom typography, and a full accessibility contrast pass.

Extended the webmail with custom backend services and browser-side add-ons that survive Mailcow updates:

• Send later: a dependency-free Python scheduler running in its own container, authenticated through Mailcow’s own session via Nginx. Adds a scheduling popover to the compose window, a manager to review, edit or cancel queued messages, automatic retries with backoff, and a failure notice if a message can’t be delivered.
• Typo-tolerant recipient search: compose autocomplete that fuzzy-matches misspelled or transposed names and addresses against an index built from the mailbox’s Sent folder, layered on top of SOGo’s own suggestions.
• Single sign-on: an Authentik login option on the Mailcow sign-in page.
• Mail sorting: a Sieve rule that files DMARC aggregate reports into their own folder, plus a re-apply script that restores these customizations after a Mailcow update.

Boyd’s Behavioral Health Services

Designed and built the site for Boyd’s Behavioral Health Services, a provider of ABA and IBHS services for children and adolescents in Northampton, Lehigh and Monroe Counties, PA. Built as a WordPress site on the Astra theme with a Contact Form 7 inquiry form, then migrated from a demo environment onto the client’s own domain through their Cloudflare account with HTTPS. Includes local-business structured data for search visibility.