PORTFOLIO.EXE // SYSTEM BOOT
LOADING ASSETS 0%
▌ INITIALIZING ▐
<PORTFOLIO_v2.6>
SECTOR_07 / NODE_04
[AUTH: GRANTED]
KATY, TEXAS // HOUSTON METRO
STATUS: ACTIVE
// INITIATING BOOT SEQUENCE — IDENTITY LOADED

AARON ZAJICEK

_

CIS Graduate & IT Freelancer based in Katy, TX. Specializing in IT support, Windows environments, Active Directory, and Microsoft 365 — plus cybersecurity tooling, security assessments, and software development. Actively seeking an entry-level IT or Help Desk role.

VIEW PROJECTS GET IN TOUCH
01

ABOUT

Computer Information Systems graduate from the University of Houston-Victoria with hands-on experience in IT support, troubleshooting, and ticket-based workflows. Strong background in Windows environments, Active Directory, and Microsoft 365.

I support end users, resolve access and configuration issues, and document fixes clearly to reduce repeat incidents. I also work as an IT and cybersecurity freelancer, performing external, non-intrusive security assessments and delivering clear, actionable reports.

On the development side I build security tools, browser extensions, and games — including LogEye, GhostProcess, Cipher Sentinel, and Glitch Pong. I also own and operate three Etsy storefronts and offer freelance services on Upwork and Fiverr.

205+
Etsy Sales
3
Etsy Stores
5
Certifications
3+
Years Freelancing
02

PROJECTS

🎮 Games [01]
INTERACTIVE
// G-001
Game DevAudio
GLITCH PONG
A glitchy cyberpunk themed pong remake, where the ball is sentient and is trying to go against you. Not only are you competing against the other paddle, but you're also competing against the ball. The game has glitchy aesthetics, neon visuals, and a distinctly dystopian vibe to it.
ACTIVE
View Project
+ ADD GAME
// NEXT CATEGORY //
⚙️ Apps [03]
UTILITIES
// A-001
PythonC#/WPFSecurity
LOGEYE
Log analyzer and threat detector that ingests Windows Security and Linux auth logs, normalizes events, and surfaces findings like brute-force attacks, suspicious logins, and privilege escalation. Exports reports to CSV and JSON. Available in free (CLI) and paid (GUI) editions — the paid version ships as a compiled WPF desktop app.
DEPLOYED
View Project
// A-002
PythonVirusTotalEDR
GHOSTPROCESS
Real-time suspicious process scanner that enumerates all running processes, computes SHA-256 hashes, and queries the VirusTotal API to classify each process as clean, malicious, or unknown. Features a tabbed Tkinter GUI with KPI dashboard cards, risk scoring, detailed process tables, and persistent settings including theme and API key configuration.
ACTIVE
View Project
// A-003
PythonTkinterCrypto
CIPHER SENTINEL
Advanced password strength analyzer with offline SHA-1 compromised hash detection (HIBP-compatible), keyboard-walk sequence detection, common pattern flagging, and entropy scoring. Supports loading custom breach hash lists and features 10 switchable themes including SOC Nightfall, Matrix Protocol, and Cyber Neon.
DEPLOYED
View Project
+ ADD APP
// NEXT CATEGORY //
🧩 Browser Extensions [01]
CHROMIUM · FIREFOX
// E-001
SecurityVirusTotalSOC
PHISHEYE RECON
Browser extension for detecting phishing, homograph attacks, and domain spoofing. Features risk scoring, brand impersonation detection, Unicode analysis, and optional VirusTotal & urlscan integration for SOC-style threat intelligence, deep URL analysis, real-time investigation, and enhanced cybersecurity awareness.
ACTIVE
View on GitHub
+ ADD EXTENSION
// NEXT CATEGORY //
🛒 Stores [03]
ETSY · COMMERCE
// S-001
EtsyDigital
ARTISTICZEBRA DIGITAL
Digital products store on Etsy offering creative digital downloads. A hub for unique, artistically crafted digital goods.
OPEN
Visit Store
// S-002
EtsyApparel
REBEL AGAINST THE FLESH
Bold, unapologetic designs for those who refuse to conform. An Etsy store built for the rebellious spirit — wear your defiance.
OPEN
Visit Store
// S-003
EtsyDigital
BYTESIZED WISDOM
Bite-sized knowledge packaged as digital products. Tech insights, guides, and resources distilled into practical, downloadable formats.
OPEN
Visit Store
+ ADD STORE
// NEXT CATEGORY //
🖥️ Hardware [02]
ESP32 · EMBEDDED
// H-001
ESP32ArduinoWi-FiSecurity
DEFENDAGOTCHI
A Tamagotchi-style cybersecurity companion built on an ESP32 with an ILI9341 320×240 touchscreen and physical tactile buttons. Runs real-time Wi-Fi threat scans directly on the hardware — detecting rogue APs, deauthentication attacks, captive portals, weak/open encryption, and channel congestion. Features a touch-calibrated UI with multiple screens, ability lists, background monitoring thresholds, and full serial debug output.
ACTIVE
View on GitHub
// H-002
ESP32CC1101BLEWebUI
PANDAFENSE
Handheld ESP32 network defense tool with a 128×64 OLED, one-button UI, CC1101 Sub-GHz RF module, LEDs, and buzzer. Runs 14 Wi-Fi threat detectors (deauth, rogue AP, ARP spoof, beacon flood, EAPOL storm, WPS spam, and more), 10 BLE detectors, and a full RF toolkit (band scan, OOK/2-FSK capture, waterfall, RF IDS). Ships with honeypot modules — fake AP, credential portal, Telnet/SSH trap, and BLE beacon — plus a live WebSocket WebUI accessible at pandafense.local.
ACTIVE
View on GitHub
+ ADD HARDWARE PROJECT
// NEXT CATEGORY //
📜 Scripts [08]
PYTHON · POWERSHELL · BASH
// SC-001
PythonSecurityEmail
EMAIL ANALYZER
Email header analyzer with SPF, DKIM, and DMARC parsing, full hop tracing across mail servers, and spoofing detection. Accepts raw headers or full .eml files via file path or stdin. Outputs a structured report or JSON for pipeline use.
ACTIVE
View Script
// SC-002
PythonSecurityRecon
PORT SCANNER
TCP/UDP port scanner with banner grabbing and service fingerprinting — zero third-party dependencies, pure Python 3.8+ stdlib. Supports CIDR ranges, custom port lists, top-100 presets, adjustable thread count, and JSON output for downstream tooling.
ACTIVE
View Script
// SC-003
PythonSecurityTLS
SSL INSPECTOR
SSL/TLS certificate inspector that checks expiry dates, cipher suites, and full chain validation for any domain. Supports custom ports, outputs human-readable terminal reports or JSON, and flags expired or weak configurations.
ACTIVE
View Script
// SC-004
PythonITBackup
BACKUP TOOL
Automated backup tool that compresses local folders into archives, uploads them to S3 or Backblaze B2, and rotates old backups on a configurable schedule. Supports daemon mode, dry-run previews, remote listing, and selective restore to any destination path.
ACTIVE
View Script
// SC-005
PythonITStorage
DISK REPORTER
Disk usage reporter that identifies the top offenders by size, detects old and duplicate files, and sends email alerts when thresholds are exceeded. Zero third-party dependencies. Outputs a JSON or terminal report with configurable scan paths, age filters, and exclusions.
ACTIVE
View Script
// SC-006
PythonITMonitoring
HEALTH MONITOR
Service health monitor that pings URLs and TCP services on a schedule, logs uptime history to SQLite, and fires Slack and email alerts on failure or recovery. Supports daemon mode, single-pass checks, a live status dashboard, and 7-day uptime reports.
ACTIVE
View Script
// SC-007
PythonITNetwork
NET PINGER
Network device pinger that sweeps CIDR ranges or host lists, pings each host via raw ICMP (falls back to TCP-only without root), probes common ports, resolves hostnames, and generates a full availability report with latency stats. Supports watch mode for continuous re-scanning.
ACTIVE
View Script
// SC-008
PythonITInventory
SYS INVENTORY
System inventory collector that snapshots CPU, RAM, OS, disk, network interfaces, running processes, and installed software. Exports to JSON, CSV, or a formatted terminal report. Supports snapshot comparisons to diff changes between runs and software-only mode for quick package audits.
ACTIVE
View Script
+ ADD SCRIPT
aaron@portfolio ~ bash
aaron@sys:~$ whoami → IT professional, security researcher, game dev   aaron@sys:~$ cat skills.txt → Python · Automation · Prompt Engineering → Windows Troubleshooting · Active Directory · Microsoft 365 → Ticketing & Documentation   aaron@sys:~$ ls ./interests IT Support/ phishing-detection/ Security/ Hardware/ Ai/   aaron@sys:~$ ping world → PONG. (always.)   aaron@sys:~$
03

SKILLS

// IT SUPPORT
Windows Troubleshooting90%
Active Directory85%
Microsoft 36585%
Ticketing & Documentation88%
// SECURITY
Phishing Detection90%
Wireshark / Packet Analysis80%
Nmap / Vulnerability Scanning78%
Security Assessments82%
// DEVELOPMENT
Prompt Engineering88%
Python82%
Automation85%
Utility Scripts75%
04

CONTACT

Available for freelance projects, security consulting, and collaboration. Reach out through any channel — I respond within 24 hours.

✉ mr.aaronz0101@gmail.com ⊙ github.com/mrA2Z0101 ◈ linkedin.com/in/aaronkeithzajicek ↓ Download Resume.pdf ◉ Hire me on Upwork ◆ Hire me on Fiverr