MJ
BULACAN, PH
—

MARK JOSEPH
DE JESUS

Web and Mobile Developer

Mark Joseph De Jesus - Portrait
Available for roles

Web, mobile, and desktop applications.

Location
Bulacan, Philippines
Project focus
Personal
Approach
Local-First & Hybrid

MAKING SOFTWARE
I ACTUALLY WANT TO USE.

I build web and mobile applications with reliable offline storage, practical AI features, and clear interfaces.

GitHub ↗ / LinkedIn ↗ / Discord ↗
Selected Work ↓ (3 featured projects)

Selected Work

Selected personal & capstone projects
Zoomanity Group administrative and performance portal login Zoomanity admin dashboard with survey metrics and feedback word cloud Individual feedback and tone analysis with AI-generated improvement suggestions Positive employee responses classified by sentiment analysis Negative employee responses flagged for HR review
01 · HR Systems
2026

ZOOMANITY EVALUATION SYSTEM

Capstone HR employee evaluation and survey management system for Zoomanity. Administrators build and manage surveys, collect employee feedback, and generate AI-powered insights. Built-in sentiment analysis classifies open-text responses as Positive, Neutral, or Negative through the Groq LLM API — with support for English and Filipino (Tagalog) feedback.

Capstone Project · AI Sentiment Analysis
PHP MySQL MySQLi Vanilla JS CSS Bootstrap Groq API PHPMailer XAMPP
Zero-Knowledge Vault unlock screen with master password entry Zero-Knowledge Vault decrypted dashboard showing stored credentials
02 · Security Engineering
2026

ZERO-KNOWLEDGE VAULT

An offline-first, zero-knowledge desktop vault that encrypts passwords, API keys, notes, and files using AES-256-GCM — with no cloud dependency and a master password that never touches disk.

Offline-First · Zero-Knowledge Encryption
Python pywebview AES-256-GCM PBKDF2-HMAC-SHA256 Vanilla JS CSS PyInstaller pytest
Daymark Today dashboard with daily habit progress and mood reflections Daymark Goals page with savings progress and weekly goals review Daymark Stats page with completion rate, streaks, and activity chart Daymark Habits page with weekly progress and active habits Daymark History page with a calendar and daily completion records
03 · First Mobile App
2024

Daymark

My first mobile app: an offline habit and goal tracker built with React Native and Expo. Daymark brings daily habits, a dedicated goals page, and mood reflections together, with data stored locally in SQLite.

iOS & Android · Local SQLite Storage
React Native Expo TypeScript SQLite
View All Projects (04 total)

Tech Stack

Languages, frameworks, and tools used across my projects

Frontend

codeTypeScript codeJavaScript widgetsReact phone_iphoneReact Native phone_androidExpo layersTailwind CSS grid_viewBootstrap codeHTML layersCSS

Backend

terminalNode.js terminalPHP terminalPython databaseMySQL databaseSQLite swap_horizWebSockets mark_email_readBrevo

Tools & Ops

account_treeGit dnsDocker deployed_codeCI Pipelines

AI & Automation

auto_awesomeClaude auto_awesomeChatGPT auto_awesomeGemini auto_awesomeDeepSeek auto_awesomeGroq

Design

paletteFigma grid_viewDesign Systems drawStitch

About & Philosophy

Origins · Engineering

I started coding because I wanted to build tools for myself. That curiosity grew into building personal applications across web, mobile, and desktop.

I care deeply about snappy performance, clean design systems, and thoughtful interactions. Rather than hiding behind heavy abstractions, I value clear mental models, local-first reliability, and software with genuine tactile feedback.

Let's Connect

mjdejesus.mjdj@gmail.com

I'm open to freelance contracts, product engineering roles, and open-source collaborations. Let's discuss what you're building.

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