Posh
Offline-first Android inventory & POS for small retailers (Flutter, Drift/SQLite, Riverpod) with optional multi-device sync via Supabase, a Next.js storefront, and Google Play subscriptions.
DemoHi, I am Jon
IT & Cybersecurity Professional
Hands-on experience in network infrastructure, on-prem cloud systems, and server administration — with a focus on reliability, security, and continuous improvement.
Contact MeAbout Me
My introduction
Detail-oriented IT and cybersecurity professional with experience in network infrastructure, on-prem cloud, and software engineering. BSIT (Network and Cybersecurity) graduate, Summa Cum Laude, from Mapua Malayan Digital College. Expanding skills in cybersecurity, DevOps, and cloud technologies.
20+
Years
experience
experience
10+
Completed
projects
projects
08+
Roles &
ventures
ventures
Skills
My technical levelCybersecurity & Networking
Training & hands-on practiceSecurity Fundamentals
90%Network Administration
85%Linux Administration
85%Firewalls & Segmentation
80%Infrastructure & Cloud
On-prem & home labProxmox & Virtualization
85%Backup & HA (TrueNAS, Dual-WAN)
80%Nginx, AdGuard, Tailscale
80%AWS Cloud Foundations
70%Software Engineering
Apps, APIs & automationFlutter / Dart (Riverpod, Drift)
80%Next.js & JavaScript
75%Python / FastAPI
75%Supabase (Auth, RLS, Edge)
75%IoT & Automation
Farm & home systemsESP32 / Microcontrollers
80%Sensors & Environmental Control
70%Arduino / Embedded C++
75%Qualification
My personal journeyBSIT — Network & Cybersecurity
Mapua Malayan Digital College · Summa Cum Laude
2022 – 2026
Cloud Foundation
AWS Academy Graduate
2025
Candidate Certified in Cybersecurity (CC)
ISC2
2024
Cisco Network Technician
Cisco Networking Academy
2024
Cybersecurity Training
TryHackMe
2021 – 2023
JavaScript Algorithms & Data Structures
freeCodeCamp
2019
Responsive Web Design
freeCodeCamp
2019
ISO 27001:2005 Implementation & Risk Assessment
ADEC Solutions
2006
Computer System Design & Programming
AMA Computer Learning Center, Calamba
2001
Solo Founder & Software Engineer
Posh — Offline-first inventory & POS
Mar 2026 – Present
IT Intern
Valuewin Solutions Inc
Jan 2026 – Mar 2026
Entrepreneur / Farm Operations Owner
IoT automation · Poultry, crops & mushrooms
2014 – Present
Freelance Developer / IT Consultant
Hotel systems, IRRI project & automation
2014 – 2023
Owner / Operator
Internet Services & Agri Supply Trading
2008 – 2012
Sales Associate
Russel Agricultural Supply
2007 – 2008
Program Coordinator / BPA
ADEC Solutions Inc · ISO 27001 ISMS team
2005 – 2007
Machine Operator
Fortune Tobacco Corporation
2003 – 2004
Computer Operator
Gods Power Unlimited
2001 – 2002
Portfolio
Featured work & labsValuewin Infrastructure (OJT)
Migrated wireless mesh to wired networking, dual-ISP / dual-WAN HA, and on-prem cloud with Proxmox, TrueNAS, Nginx Proxy, AdGuard, and Vaultwarden — plus operational documentation.
Home Lab
Personal Proxmox VE lab with Linux servers, firewall rules, network segmentation, HA/backup drills, and Tailscale for secure remote access to internal services.
Open Source & Tools
FlickOS (lightweight Ubuntu-based OS), FastAPI services, Python security/automation tools, a WAF proof-of-concept, and MCP server / AI agent experiments.
Repositories