JEREN J

Android Developer

I build fast, native Android apps with Kotlin and Jetpack Compose, backed by clean PHP APIs and well-structured MySQL databases. I care about smooth UI, reliable offline storage, and code that's easy to maintain.

View GitHub See Projects

About Me

I'm an Android developer focused on building responsive, native mobile experiences. My day-to-day work covers Kotlin and Jetpack Compose on the front end, SQLite/Room for local storage, and PHP with MySQL when an app needs a backend to sync with. I enjoy taking a feature from idea to a polished, working screen.

Code Sample

A quick look at how I structure local storage on Android and the matching backend sync endpoint.

VoiceBudget — source preview

package com.example.voicebudget

class DBHelper(context: Context) : SQLiteOpenHelper(...) {
  override fun onCreate(db: SQLiteDatabase?) {
    db?.execSQL("CREATE TABLE expenses (id INTEGER PRIMARY KEY, amt REAL, tag TEXT)")
  }

  fun insertVoiceRecord(amount: Double, label: String) {
    val values = ContentValues().apply { put("amt", amount) }
    writableDatabase.insert("expenses", null, values)
  }
}

Skills Snapshot

A rough breakdown of where my time and confidence go across the stack.

Proficiency by Tool

Where My Focus Goes

Projects Shipped, by Month

Tech Stack

Kotlin

Jetpack Compose

SQLite / Room

PHP

MySQL

JavaScript

Git

REST APIs

UI/UX Basics

Figma

Firebase

App Security

Certifications

Courses and certificates I've completed to back up the skills above. Replace these with your real credential names, dates, and verification links.

Projects

Get in Touch

Open to Android development roles, freelance projects, and full-stack collaborations.

Trichy, Tamil Nadu, India