Software Engineer · Flutter & Full-Stack Patna, India

Hi there I'mChandan Kumar

I build Flutter apps

I design and build premium, production-ready apps for web and mobile, from pixel-perfect UI to scalable Firebase backends.

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Founder, CEO & CTOCodeCraft by Chandan

Flutter Firebase 55k+ lines of Dart 5 Flutter projects

Code

55k+Lines of DartAcross apps & shared packages

Files

269Dart source filesHand-written, generated code excluded

Apps

5Flutter projectsMobile apps + web admin console

Backend

5Cloud modulesFirebase Cloud Functions services

Live

2Apps on Google PlayPublished and available to download

API

9Cloud FunctionsCallable, HTTP and scheduled endpoints

Reuse

2Shared packagesMelos packages every app plugs into

Stack

58Skills & toolsAcross 8 areas, mobile to cloud

About me

Who I am, what I build and how I like to work.

Building a whole product suite, end to end

Based inPatna, India
CurrentlyFounder, CEO & CTO · CodeCraft by Chandan
Core stackFlutter · Dart · Firebase

Hire me See projects

I'm a software engineer focused on crafting clean, high-performance Flutter applications with thoughtful UI/UX. I care about the details: smooth animations, consistent design systems, and code that scales. I'm currently building CodeCraft by Chandan, a multi-app product suite spanning mobile, web and cloud-backed services, all from a single monorepo.

Pixel-perfect UISmooth animation and consistent design systems.

Performance firstClean, high-performance Flutter code.

Built to scaleShared packages, one monorepo, one backend.

My services

How I can help bring your product to life, from the first screen to the Play Store.

Mobile App Development

Cross-platform Android and iOS apps in Flutter, from first screen to Play Store release.

Flutter & Dart
Clean, scalable architecture
Onboarding, auth & offline flows

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Web Apps & Admin Panels

Responsive Flutter Web apps and dashboards to manage content, users and app config.

Flutter Web
Role-based admin consoles
Analytics views

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Firebase Backend & APIs

Secure, scalable backends with Firestore, Cloud Functions, Auth, Storage and push notifications.

Cloud Functions (Node.js)
Firestore data modelling
FCM push notifications

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UI/UX & Design Systems

Premium, consistent interfaces with reusable components, smooth animation and dark themes.

Material Design 3
Shared UI kits
Micro-interactions

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Monetization

Revenue built in from day one: AdMob ads, in-app purchases and premium tiers with server verification.

AdMob integration
In-app purchases
Premium entitlements

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Play Store Launch & Compliance

Store-ready releases with hosted Privacy Policies, Terms, data-safety answers and scoped permissions.

Hosted legal pages
Scoped storage permissions
Release & update flows

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Education & learning

Where my foundations come from, and how I keep growing.

2022 to 2024CGPA 7.34 / 10

Master of Computer Applications (MCA)

Chandigarh University, Mohali

Postgraduate degree in computer applications, covering software engineering, application development and advanced computing.

2018 to 202173.75%

Bachelor of Computer Applications (BCA)

Langat Singh College, Muzaffarpur · Babasaheb Bhimrao Ambedkar Bihar University

Undergraduate degree building the foundations: programming, data structures, databases and computer networks.

2015 to 201860%

Intermediate (12th)

MK College Bhutahi, Sitamarhi · BSEB Patna

Higher secondary education under the Bihar School Examination Board.

2013 to 201563%

Matriculation (10th)

Shri Jagshwar High School Bhutahi, Sitamarhi · BSEB Patna

Secondary education under the Bihar School Examination Board.

Ongoing

Self-directed engineering

Flutter · Firebase · Python · Cloud

Learning by shipping: designing and building the CodeCraft by Chandan monorepo, from shared Dart packages and a design system to Cloud Functions and an admin console, plus REST backends with Python, FastAPI and PostgreSQL, containerised with Docker.

FlutterDartFirebasePythonFastAPIPostgreSQLDocker

Work experience

Where I've applied all of this in the real world.

Apr 2025 to Present · 1 yr 7 mos Full-time Current

PolicyX.com

Gurugram, Haryana, India · On-site

Built the PolicyX and ShareScart apps from scratch with Flutter, Dart, PHP and MySQL, and shipped both to Google Play and the App Store. Promoted from Associate to Senior Associate.

Senior Associate Android DeveloperAug 2026 to Present · 3 mos Promoted

FlutterDartPHPMySQL
Associate Android DeveloperApr 2025 to Jul 2026 · 1 yr 4 mos

FlutterDartPHPMySQL

Apps built from scratchFlutterDartPHPMySQL

P PolicyXCompare & buy insurance online Google Play App Store

S ShareScartMarketplace for unlisted shares Google PlayApp Store

2024 to Present Self-employed Current

CodeCraft by Chandan

Patna, Bihar, India · Remote

Building and shipping a multi-app Flutter product suite that shares one design system, one set of core packages and one Firebase backend.

Founder, CEO & CTO2024 to Present

FlutterFirebaseCloud FunctionsFlutter Web

Built Status Saver Pro and Vidya Sangam Pro, each with hosted legal pages
Built a Flutter Web admin console to run every app remotely
Designed shared packages for ads, auth, push and networking

Skills & toolkit

58 skills across 8 areas: what I use to take an idea from design to the Play Store.

Android Development

10 skills

Kotlin
Java
XML
Jetpack Compose
Room Database
RecyclerView
Coroutines
Retrofit
WorkManager
Platform Channels

Cross-platform

6 skills

Flutter
Dart
Flutter Web
Android
iOS
Responsive Web

Architecture & Quality

5 skills

MVVM
Clean Architecture
Performance Tuning
App Security
Melos Monorepos

Backend & Cloud

13 skills

Firebase Auth
Cloud Firestore
Realtime Database
FCM
Firebase Storage
Cloud Functions
Node.js
Security Rules
Firebase Hosting
PostgreSQL
FastAPI
REST APIs
JSON Parsing

Payments & Publishing

7 skills

Google Play Billing
Subscriptions
Payment Gateway
UPI Integration
AdMob
Play Developer API
Google Play Console

UI / UX

5 skills

Material Design 3
Modern UI/UX
Design Systems
Figma
Animations

Tools

8 skills

Android Studio
Xcode
VS Code
Git
GitHub
Gradle
Postman
CI/CD

AI Tools

4 skills

ChatGPT
Claude AI
Gemini
Stitch

Featured projects

Apps, tools and infrastructure I've designed and built.

Status Saver Pro

Android · Utilityv1.0.5

View and save WhatsApp and WhatsApp Business statuses, built on Android's Storage Access Framework so the app reads only the one folder you grant.

Scoped-storage status scanner (no broad file access)
Saved library, onboarding and permission flows
Premium tier, push notifications and optional sign-in

FlutterAndroid SAFFirebaseIn-app purchasesAdMob

Get it onGoogle PlayComing soonApp StoreComing soonAndroid APK

View app details

Vidya Sangam Pro

Educationv1.0.10

Chapter-wise NCERT solutions for Class 1 to 12 in English and Hindi medium, organised so students reach the right answer in a few taps.

Class 1 to 12, English and Hindi medium
Free, login and Premium study material
Offline downloads, favourites and discussions

FlutterFirebaseIn-app purchasesBilingual

Get it onGoogle PlayComing soonApp StoreComing soonAndroid APK

View app details

Flutter Web

Admin Web Panel

One dashboard that runs the whole app suite: ads config, maintenance mode, force update, in-app messages, push notifications, user management, AdMob revenue charts, and Vidya Sangam's catalog, chapters, access rules and watermarks.

admin_web/lib/modules/7 modules

├─analytics_dashboard/
├─app_config_manager/
├─games_manager/
├─ncert_manager/
├─notifications/
└─+ 2 more

Flutter WebFirestoreFirebase Authfl_chart

Cloud Functions

Firebase Backend

Server-side logic shared by every app: purchase verification, subscription expiry checks, push notifications, user management, AdMob revenue reports and the contact-form email.

api_firebase/functions/src/8 modules

├─common/
├─contact.js
├─contact_template.js
├─iap_verify/
├─notifications/
└─+ 3 more

Node.jsCloud FunctionsFirestoreStorage

Dart packages

Shared Core & UI Kit

Reusable packages every app plugs into: ads with consent, auth, push, networking and connectivity, promo banners, remote update sheets and cross-promotion, all managed as one Melos monorepo.

packages/core/lib/12 modules

├─ads/
├─auth/
├─banners/
├─connectivity/
├─firebase/
└─+ 7 more

MelosClean architectureDesign systemReusable modules

Kotlin

Native Android Layer

Status Saver's native side: a WorkManager job that checks for new statuses every 15 minutes, status-alert notifications, native ad layouts, and platform channels for saving, sharing, reposting and wallpapers.

status_saver_app/android/.../kotlin/6 modules

├─App.kt
├─MainActivity.kt
├─NativeAdFactories.kt
├─NotificationHelper.kt
├─StatusCheckWorker.kt
└─+ 1 more

KotlinWorkManagerPlatform channelsNotifications

Firebase rules

Security Rules

Database and storage rules that keep each user's data private, make purchases writable only by the server, and keep the admin console locked to the owner account.

api_firebase/4 modules

├─firebase.json
├─firestore.indexes.json
├─firestore.rules
└─storage.rules

Firestore rulesStorage rulesIndexesLeast privilege

Static site

Portfolio & Legal Hub

This website: a Node.js generator builds every page, pulls each app's Privacy Policy and Terms straight from its source code, makes the QR codes, and deploys to Firebase Hosting.

legal_pages/5 modules