Initialising
000%
Available for relocation · Ahmedabad → Germany / Dubai

Sonu Shah.

I build premium mobile & desktop experiences — iOS, macOS, Android — that feel native, perform at scale, and ship on time.

Flutter Developer iOS & macOS Engineer VoIP / Twilio Custom Editor Builder Firebase Expert
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Production Apps
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Years Experience
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Custom Editors Built
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About Me

Engineering depth.
Product mindset.

I'm a Flutter developer based in Ahmedabad with 2+ years of production experience shipping apps across iOS, macOS, iPad, and Android. I've built everything from VoIP calling apps with Twilio to custom graphic design editors with drawing engines — all from a single Dart codebase.

At Applie Info Solution I ship iOS and macOS apps — WiFi calling with Twilio SDK, eSign, PDF Maker, Voice Memo, and three full custom creative editors (Logo Maker, Invitation Maker, Graphic Design). At Pdhamecha LLP I built Android apps including Cloud Vidhya's e-learning platform and a full HRMS with geolocation and payroll.

Targeting Senior Flutter / Mobile Engineer roles in Germany and Dubai. Open to relocation. Available immediately.

Open to Work · Relocation Ready
Current Base
Ahmedabad, India
GMT+5:30 · Targeting Germany / Dubai
Current Company
Applie Info Solution Pvt. Ltd.
Flutter Developer · iOS & macOS
Core Stack
Flutter · Dart · Firebase
GetX · Bloc · Twilio Voice SDK
iOS · macOS · Swift Channels
Education
MCA — LJ Institute of Computer Applications
Top 10% of batch · 2022–2024
🍎 iOS · macOS · iPad
📞 Twilio VoIP Expert
Journey

How I got here

Fab 2026 – Present
🍎 Current Role
Flutter Developer
Applie Info Solution Pvt. Ltd. · Ahmedabad
Building iOS and macOS production apps. Specialising in VoIP calling with Twilio Voice SDK, custom creative editors with drawing engines, document tools, and App Store deployment.
WiFi Calling App eSign PDF Maker Voice Memo Self Employed BG Remover Logo Maker Invitation Maker Graphic Design App
iOSmacOS Twilio SDKGetX App StoreIAP
Jun 2024 – Dec 2024
📱 Previous Role
Flutter Developer
Pdhamecha LLP · Ahmedabad
Built production Android apps spanning e-learning and HR/enterprise automation. Delivered WebRTC live video, full HRMS with real-time geolocation tracking, payroll, and attendance.
Cloud Vidhya HRMS + Geolocation
AndroidWebRTC Google MapsBloc Firebase
2022 – 2024
Master of Computer Applications
LJ Institute of Computer Applications · Ahmedabad
Graduated in the top 10% of batch. Core coursework in DSA, OOP, DBMS, Computer Networks, and Mobile Development — built the engineering foundation for production-grade work.
Top 10%DSA OOPDBMS
Skills

The constellation
I ship with.

Hover each node to explore depth & context

🎯
Flutter
EXPERT
🍎
iOS / macOS
ADVANCED
🔥
Firebase
EXPERT
GetX / Bloc
EXPERT
📞
Twilio Voice
ADVANCED
🎨
Custom Editors
ADVANCED
📡
WebRTC
ADVANCED
💳
StoreKit / IAP
ADVANCED
🗺️
Google Maps
ADVANCED
📄
PDF / Document
ADVANCED
Projects

12 apps. 2 companies.
All production.

🍎 Applie Info Solution
📱 Pdhamecha LLP
01 / VOIP · iOS · iPad
WiFi Calling App
Twilio Voice SDK — second phone number dialer for iOS & iPad

Full-featured WiFi calling app built with Twilio Voice SDK and Plugin for iOS and iPadOS. CallKit-style active call UI with DTMF keypad, audio device routing (earpiece / speaker / Bluetooth), and animated call screen transitions. Two-tier StoreKit IAP subscription system with reactive GetX state. Native Swift method channels bridge audio session and CallKit flows.

iOS+iPad
Platform
Twilio
Voice SDK
IAP
Subscription Gated
FlutterTwilio Voice SDK Swift ChannelsStoreKit IAP GetXCallKit
📞
02 / CREATIVE TOOLS · iOS · macOS
Logo Maker · Invitation Maker · Graphic Design App
Three apps — one custom-built canvas editor engine

Three separate App Store apps sharing a custom-built canvas editor — drag-and-drop elements, text styling, image layers, sticker packs, colour pickers, and export flows. The editor engine handles object selection, multi-layer z-ordering, gesture-based transformations (scale, rotate, translate), and canvas-to-image rendering. Each app has a distinct template library, brand kit, and IAP asset packs.

3
Apps, 1 Editor Engine
Custom
Canvas Renderer
iOS+macOS
Platform
FlutterCustom Canvas Editor Gesture EngineiOS · macOS IAP Asset PacksGetX
🎨
03 / DOCUMENT TOOLS · iOS · macOS
eSign · PDF Maker
Digital signing and document generation for iOS & macOS

eSign lets users draw, place, and apply digital signatures to PDFs with field detection and multi-page support. PDF Maker generates formatted PDFs from templates — invoices, resumes, reports — with live preview, custom fonts, and native macOS print/share integration. Both apps support iCloud Drive and Files app integration.

PDF
Generation + Signing
iCloud
Drive Integrated
macOS
Native Print
FlutterPDF Kit iOS · macOSiCloud / Files share_plus
✍️
04 / UTILITIES · iOS · macOS
Voice Memo · Self Employed · BG Remover
Three utility apps — audio, freelance tracking, AI image processing

Voice Memo — high-fidelity recording with waveform visualisation, playback controls, and Hive local storage with build_runner codegen. Self Employed — freelance income tracker with invoicing, expense tagging, and tax summary views. BG Remover — isolate-based background removal pipeline with split-panel desktop layout, sticker overlays, and mobile export.

3
Utility Apps
Isolate
Based Processing
iOS+macOS
Platform
FlutterHive + build_runner AudioSessionDart Isolates iOS · macOS Desktop
🛠️
01 / EDTECH · Android
Cloud Vidhya
Live e-learning platform — WebRTC video classes · Android

E-learning platform built at Pdhamecha LLP for Android. WebRTC live video classes powered by a custom Node.js signalling server, optimised media caching for smooth playback, gamified learning paths, quizzes, and FCM push notifications. Bloc state management ensures predictable UI across complex async flows.

65%
Engagement ↑
WebRTC
Live Classes
Android
Platform
Flutter AndroidWebRTC Node.js SignallingBloc Firebase FCM
🎓
02 / ENTERPRISE · Android
HRMS with Geolocation
Real-time location tracking · Attendance · Payroll · Employee management

Full HR Management System with Google Maps real-time location tracking and geofenced punch-in/out. Features include automated attendance logs, payroll calculation, employee directory, leave management, and manager approval flows. Firestore real-time listeners power the live dashboard. Reduced manual HR workload by 70%.

90%
Attendance Accuracy ↑
70%
Manual Work ↓
Real-time
Location Tracking
Flutter AndroidGoogle Maps API GeofencingFirestore Realtime Firebase AuthPayroll Engine
🏢
Experience

Where I've shipped production.

🍎 Current
Flutter Developer
Applie Info Solution Pvt. Ltd. · Ahmedabad, India
Jan 2025 – Present
  • Built WiFi Calling App using Twilio Voice SDK and Plugin for iOS and iPad — CallKit-style UI, DTMF keypad, audio device routing (earpiece/speaker/Bluetooth), native Swift method channels for audio session integration.
  • Engineered a two-tier StoreKit IAP subscription system with GetX reactive state, purchase persistence via GetStorage, and paywall screens with shimmer loading states.
  • Designed and built a custom canvas editor engine used across three App Store apps (Logo Maker, Invitation Maker, Graphic Design App) — multi-layer z-ordering, gesture-based transforms, sticker/image/text tools, and canvas-to-image export.
  • Delivered eSign (digital signature placement on PDFs, multi-page, field detection) and PDF Maker (template-based PDF generation with live preview and macOS native print/share).
  • Built Voice Memo with high-fidelity audio recording, waveform visualisation, and Hive local DB with build_runner codegen; BG Remover with isolate-based processing and adaptive desktop/mobile layout.
  • Built Self Employed — a freelance income and expense tracker with invoicing, tax summaries, and Firestore sync.
  • Managed App Store Connect deployments, TestFlight beta distribution, provisioning profiles, and CocoaPods dependency resolution across all iOS/macOS targets.
📞 WiFi Calling
TWILIO · IOS · IPAD
✍️ eSign
PDF · IOS · MACOS
📄 PDF Maker
DOCUMENT · IOS · MACOS
🎙️ Voice Memo
AUDIO · IOS · MACOS
💼 Self Employed
FINTECH · IOS
🌄 BG Remover
AI · IOS · MACOS
🎨 Logo Maker
EDITOR · IOS · MACOS
💌 Invitation Maker
EDITOR · IOS · MACOS
🖌️ Graphic Design
EDITOR · IOS · MACOS
📱 Previous
Flutter Developer
Pdhamecha LLP · Ahmedabad, India
Jun 2024 – Dec 2024
  • Built Cloud Vidhya — Android e-learning platform with WebRTC live video classes, a Node.js signalling server, optimised media caching, gamified learning paths, quizzes, and FCM push notifications.
  • Delivered HRMS with Geolocation — real-time employee location tracking via Google Maps API, geofenced attendance punch-in/out, payroll calculation, leave management, and manager approval flows using Firestore real-time listeners.
  • Achieved 90% attendance accuracy improvement through geofencing and 70% reduction in manual HR workload through automation and data-driven dashboards.
  • Managed Bloc state architecture across both apps — stream-based async flows, event-driven state transitions, and real-time UI updates.
🎓 Cloud Vidhya
EDTECH · ANDROID · WEBRTC
🏢 HRMS + Geolocation
ENTERPRISE · ANDROID · MAPS
Full Stack

Everything I work with.

🎯Flutter
🐦Dart
🍎iOS · macOS · iPad
📞Twilio Voice SDK
🔥Firebase
GetX
🧱Bloc
📡WebRTC
🎨Custom Canvas Editor
✍️eSign · PDF
🗺️Google Maps · Geofencing
💳StoreKit IAP
🟡Hive + build_runner
☁️Firestore Realtime
🔐Firebase Auth
🚀Node.js Signalling
📦App Store Connect
🧪TestFlight
🌀CocoaPods
🖼️Dart Isolates
🎯Flutter
🐦Dart
🍎iOS · macOS · iPad
📞Twilio Voice SDK
🔥Firebase
GetX
🧱Bloc
📡WebRTC
🎨Custom Canvas Editor
✍️eSign · PDF
🗺️Google Maps · Geofencing
💳StoreKit IAP
🟡Hive + build_runner
☁️Firestore Realtime
🔐Firebase Auth
🚀Node.js Signalling
📦App Store Connect
🧪TestFlight
🌀CocoaPods
🖼️Dart Isolates
Why Hire Me

Not just a Flutter dev.
A mobile product engineer.

🍎
iOS & macOS Depth
I own the Apple ecosystem layer — Twilio Voice SDK integration, Swift method channels, AudioSession, CallKit flows, StoreKit IAP, CocoaPods, TestFlight, and App Store Connect. Not just a Flutter wrapper — deep native integration experience.
🎨
Custom Editor Builder
Built three App Store creative apps sharing one custom canvas engine — gesture-based transforms, multi-layer rendering, sticker/text/image tools, and export pipelines. From scratch. No third-party editor SDK.
📞
VoIP / Real-Time Expert
Twilio Voice SDK for WiFi calling (iOS/iPad) and WebRTC peer-to-peer video for live e-learning — both built from scratch, production-deployed. Real-time communication is a core competency, not an add-on.
Ship Velocity
12+ production apps across 2 companies in under 2 years. Each domain-specific and built independently — from ideation to App Store submission. I move fast without accumulating debt.
🏗️
Architecture Ownership
GetX coordinator patterns, Bloc stream architecture, Hive codegen, Firestore composite index management — I design for scale and maintainability, not just to make it work today.
🌍
Relocation Ready
Actively targeting senior Flutter / Mobile Engineer roles in Germany and Dubai. Visa-ready, motivated, and excited by high-performing international engineering teams.
Let's build
something great.

Looking for a Flutter engineer who ships iOS, macOS, and Android apps at scale? Let's talk.