Cisco Certified Support Technician (CCST) Cybersecurity
Certified in cybersecurity fundamentals, including threat analysis, network defense, and incident response.
Threat AnalysisNetwork DefenseIncident ResponseCisco
View Credential
I AM
Christian Jarold
Christian Jarold David builds high-performance web and mobile applications, intelligent AI-driven solutions, and secure networking architectures.
Professional Journey
Experiences
2026
ICT Infrastructure & Networking Intern
Department of Science & Technology (DOST) — Region III
Led one of the groups of the ICT Infrastructure & Networking Team. Created and deployed a building-wide Captive Portal via secure access point routing. Managed maintenance on 500+ ICT assets (PCs, servers, laptops), debugged the ICT Inventory System, and developed automation solutions for various organizational systems to improve efficiency and support daily IT operations.
2025
Startup Co-Founder
Philippine Startup Challenge X (DICT) — Region III
Drove technical ideation, UX prototyping in Figma, and investor panel pitching of an aquaculture technology startup. Placed in the TOP 15 of 74 national entries, collaborating on hardware-software integrations to maximize real-world usability and community farming impact.
2024-2025
Lead Document Specialist / IoT Engineer / DevOps
Fishtastic Capstone — OLFU
Engineered a solar-powered IoT aquaculture system monitoring 5 water parameters, reducing manual checks by 80% via 24/7 telemetry tracking. Developed an AI-analytics web & mobile application that cut event response times by 70%, achieving an ISO 25010 'Excellent' software quality rating of 96.18%.
What I've built
Projects
jarold-portfolio://fishtastic
IoT + AI + Web
Fishtastic Capstone
Solar-powered IoT aquaculture system monitoring 5 parameters, reducing manual checks by 80%. Developed AI-analytics web/mobile app improving response by 70% (ISO 25010 Evaluated at 96.18% - Excellent).
React NativeExpoExpressNode.jsPostgreSQLRedisClerkFirebaseTypeScriptTailwind CSSIoT SensorsDevOps
jarold-portfolio://queryous
AI + Helpdesk + Web
Queryous IT Autopilot
Enterprise IT helpdesk autopilot powered by Google Gemini. Automatically triages tickets, classifies category urgency, balances technician workloads, and drafts customized self-resolution troubleshooting steps.
Next.jsGoogle GeminiPrismaPostgreSQLZodTailwind CSSTypeScript
jarold-portfolio://dost3-portal
Portal + Networks + PHP
DOST3 Guest Wi-Fi Portal
A high-performance Captive Portal and administrative dashboard integrated with FortiGate Firewall APIs. Features daily quota tracking, Trainee & Visitor role limit rules, Real User Monitoring (RUM), and MAC-address device whitelisting.
LaravelVue.jsPHPSQLiteFortiGate APIViteAxiosTailwind CSS
jarold-portfolio://agencyos
Agency Management + Finance + AI
AgencyOS Workspace
An all-in-one agency operation management platform. Features client billing and invoicing, real-time resourcing, visual task tracking, team time logs, interactive dashboard analytics, and automated notification streams.
FastAPIReactPythonSQLiteReact RouterRechartsSQLAlchemyViteUvicornCeleryRedis
jarold-portfolio://wizora-payroll
HRM + Payroll + Finance
Wizora Payroll
An HR and automated payroll management platform. Features employee lifecycle tracking, smart clock-in/out attendance logging, department hierarchical structures, leave/holiday approvals, custom loans amortization, and automated payslip generation.
LaravelViteTailwind CSSSQLitePHPJavaScript
Get to know me
About Me
Christian JaroldFull-Stack Dev & AI Engineer
Hi! I'm Jarold, someone who genuinely gets excited when an idea starts becoming something real.
What draws me to technology is that it never stands still. There is always something new to learn, a better way to solve something, or an idea that didn't exist last year. That constant movement keeps me engaged in a way few things do. I'm not just interested in where technology is right now. I'm excited about where it's going, and I want to be someone who grows alongside it.
For me, building things has never really been about the technology itself. It's about the person on the other end, someone who has a problem, a dream, or a need, and wondering if I could do something about it. That question is what gets me started on most of the things I've built.
I've worked with different projects, competed with peers, led teams, and shipped projects I'm genuinely proud of. Along the way I've learned that the hardest part is rarely the code. It's listening well, thinking clearly, and caring enough to keep going when things get messy.
Outside of work, I'm usually learning something new, going down rabbit holes I didn't plan on, or thinking about the next thing I want to build. I believe curiosity is a skill, and I try to keep it sharp.
If you're here, we probably have something in common. Let's connect.
3+
Years Exp.
20+
Projects Built
10+
Happy Clients
∞
Lines of Code
Tech Stack
React / Next.js
TypeScript
Node.js
PostgreSQL
Tailwind CSS
Python
REST APIs
GraphQL
Docker
Git & GitHub
Figma
AI Workflows
Automation
What I work with
Toolbox
30 technologies across 5 domains — from frontend frameworks to embedded IoT systems.
React / Next.js
TypeScript
JavaScript
HTML / CSS
Tailwind CSS
Node.js
PHP / Laravel
REST APIs
GraphQL
9
6
5
6
4
30Technologies
5Domains
3+Years Building
∞Always Learning
Currently Exploring
🦀Rust
🎭Three.js
⛓️Web3 / Blockchain
🧠Machine Learning
☸️Kubernetes
🔵Go
The best tool isn't the newest one — it's the one you've mastered enough to solve real problems with.
Let's talk
Get In Touch
I'm always open to new opportunities, collaborations, and interesting conversations. Whether you have a project in mind or just want to say hi — my inbox is open.