Available to hire
Senior Mobile Developer (10+ years) specializing in hardware-integrated Flutter apps and multi-tenant Android deployments (NFC, BLE, UHFRFID, Nordic DFU). Delivered 19+ white-label production apps across Play Store, Amazon Appstore, and enterprise channels with end-to-end ownership—from architecture and REST integration to crash/performance monitoring and release rollouts.
Works comfortably across Flutter 3.x/ Dart 3, native Android (Java/Kotlin), offline-first syncing (Hive), Firebase services, media/docs, and Google Maps/location features, with strong background in ProGuard/R8, DI, networking, and app store release lifecycle. Has led ground-up finance ERP module development, secure assessment vault (AES-256 + offline-first), and D2C grocery commerce buildouts with payment integrations.
Language
Work Experience
Senior Mobile Developer (Flutter & Android)
May 20, 2026 - PresentDelivered Flutter and native Android consulting and feature builds, including architecture reviews, hardware integration prototypes (NFC, BLE, UHFRFID), and end-to-end feature releases via Play Console rollout. Advised state management (GetX), offline-first sync using Hive, and Dio-based networking patterns aligned with production multi-tenant deployments. Owned post-launch crash/performance monitoring responsibilities.
Freelance Flutter & Android Developer (Self-employed, Remote)
May 1, 2026 - PresentDelivered Flutter and native Android consulting: architecture reviews, hardware integration prototypes (NFC, BLE, UHF RFID), and end-to-end feature rebuilds through Play Console rollout. Advised clients on state management (GetX), offline-first sync with Hive, and Dio-based networking patterns for multi-tenant deployments.
Senior Flutter Developer at Arresto Connect, Delhi
April 1, 2026 - May 31, 2026Continued and maintained Arresto Connect after AzzuSol Global LLP merger. Supported and stabilized industrial safety platform deployments and maintained 19 white-label flavors from a single Flutter codebase. Maintained NFC/BLE/UHF RFID/Nordic DFU hardware integrations and ensured post-merger platform stability and client deployments.
Senior Flutter Developer at Azu Sol Global LLP, Delhi
May 1, 2025 - April 1, 2026Rejoined and led ground-up development of an enterprise Finance ERP platform in Flutter. Built 22+ feature modules (sales, purchase, quotations, inventory, vehicle scanning, and reporting) using 43 data models serving B2B clients. Designed role-based access control with 6+ permission tiers and reduced client onboarding configuration time by ~70%. Implemented real-time dashboards using fl_chart and server-side paginated sources to handle 10K+ records. Integrated barcode/QR scanning for warehouse lot tracking to reduce manual entry from ~3 minutes to under 20 seconds per shipment and standardized 30+ REST endpoints via Dio with centralized error handling, reducing API-related crashes by ~60%.
Senior Flutter Developer at AzuSol Global LLP, Delhi
May 1, 2025 - April 30, 2026Rejoined to lead ground-up development of an enterprise finance & ERP platform in Flutter. Built finance ERP with 22+ feature modules (sales, purchase, quotations, inventory, vehicle scanning, reporting) and multiple data models for B2B clients. Implemented role-based access control with 6+ permission tiers, reduced onboarding configuration time significantly, built real-time dashboards with fl_chart and paginated data sources, integrated barcode/QR scanning for warehouse tracking, standardized REST endpoints via Dio with centralized error handling, and reduced API-related crashes. Optimized startup time and APK size using deferred service initialization and lazy GetX controllers; released with high crash-free user rates.
Flutter Developer at Questionslab Inc., Noida
April 1, 2024 - May 1, 2025Owned end-to-end development of Questionslab Vault, a secure question-bank and assessment app for educational institutions. Implemented client-side AES-256 encryption for sensitive content. Built offline-first sync using Hive with background isolates to enable full functionality with zero network dependency for test-center deployments. Integrated 15+ REST endpoints using Dio interceptors for auth refresh, retries, and centralized error handling, reducing API-related crashes by ~65% (Crashlytics). Optimized cold-start time and APK size using deferred service initialization and lazy GetX controllers; maintained releases with >99.5% crash-free users.
Flutter Developer at Questionlab Inct., Noida
April 1, 2024 - May 1, 2025Owned end-to-end development of Questionslab Vault: secure question bank and assessment app for educational institutions. Implemented AES-256 client-side encryption for sensitive content; enabled offline-first sync with Hive and background isolates for zero network dependency in test-center deployments. Integrated 15+ Dio REST endpoints using interceptors for token refresh, retries, and centralized error handling; reduced API-related crashes using crash analytics. Optimized cold start and APK size via deferred initialization and lazy GetX controllers; maintained high crash-free release quality.
Android & Flutter Developer at Pansari Group, Delhi
July 1, 2023 - April 1, 2024Built Panasari Direct, a D2C grocery e-commerce app from zero to Play Store relaunch, covering cart, checkout, payments, and order tracking. Integrated Razorpay with retry and idempotency handling across COD, UPI, card, and wallet flows and achieved consistent transaction success on production traffic. Architected state using GetX (primary) and Provider (language & search context) while maintaining ~60 FPS on product listings for 500+ SKUs with ListView.builder and image caching. Implemented deep-linking for product/category/promotion URLs to support marketing campaign funnels. Owned full release lifecycle (Figma → development → Play Console rollout → Crashlytics monitoring) across multiple feature releases with zero production rollbacks.
Flutter Developer at Pansari Group, Delhi
July 1, 2023 - April 30, 2024Built PanSari Direct, a D2C grocery e-commerce app from zero to Play Store relaunch, covering cart, checkout, payments, and order tracking. Integrated Razorpay with retry/idempotency across COD, UPI, card and wallet flows and achieved consistent transaction success in production traffic. Architected state with GetX and Provider; maintained ~60 FPS on product listings with 500+ SKUs via ListView.builder and image caching. Implemented deep linking for product/category/promotion URLs to support marketing campaign funnels and owned full release lifecycle (Figma to development to Play Console rollout to Crashlytics monitoring) with zero production rollbacks.
Android & Flutter Developer at Azu Sol Global LLP, Delhi
September 1, 2016 - June 1, 2023Scaled and architected major modules of Arresto Connect, a multi-tenant industrial safety compliance platform supporting 19+ white-label client flavors using a single Flutter codebase. Integrated industrial hardware into Flutter, including NFC tag read/write for PPE asset tracking, BLE device communication, UHFRFID scanning, and Nordic DFU over-the-air firmware updates. Owned the native Android codebase (Kotlin + Java), pre-migration and Kotlin platform-channel bridges (MethodChannel, EventChannel) to connect Flutter with native hardware. Optimized APK/AAB size and cold-start using ProGuard/R8 shrinking and lazy initialization; triaged native ANR and JNI crashes via Crashlytics maintaining crash-free rate above 99%. Led Android → Flutter migration over ~6 months and reduced iOS+Android feature parity effort by about half; shortened release cycles from bi-weekly to weekly. Built PDF inspection report generator, digital signature capture, and Excel import/export to eliminate multi-hour
Android & Flutter Developer at AzuSol Global LLP, Delhi
September 1, 2016 - June 30, 2023Scaled and architected major modules of Arresto Connect, a multi-tenant industrial safety compliance platform supporting 19 white-label flavors from a single Flutter codebase. Integrated industrial hardware into Flutter: NFC tag read/write for PPE asset tracking, BLE device communication, UHF RFID scanning, and Nordic DFU for over-the-air firmware updates. Owned native Android codebase (Kotlin + Java) and authored Kotlin platform-channel bridges connecting Flutter to native hardware (MethodChannel/EventChannel). Optimized APK/AAB size with ProGuard/R8 shrinking and cold start with lazy initialization; triaged native ANR/JNI crashes via Crashlytics and maintained high crash-free rate. Led Android -> Flutter migration over ~6 months, reducing feature parity development time significantly. Built PDF inspection report generator, digital signature capture and Excel import/export to remove multi-hour manual reporting workflows for safety teams.
Senior Mobile Developer
January 1, 2016 - PresentSenior Flutter & Android developer specializing in hardware-integrated Flutter apps (NFC, BLE, UHF RFID, Nordic DFU firmware updates). Delivered multiple production apps across Play Store, Amazon Appstore and enterprise channels, including multi-tenant white-label deployments from a single codebase. Owned end-to-end architecture and feature delivery using Flutter 3.x (Dart 3, null-safety), REST integration, Play Console releases, and post-launch crash/performance ownership. Delivered hardware workflows including tag read/write, device communication, scanning, and DFU updates; built offline-first sync using Hive and background isolates.
Android Developer at Aay a am Software Pvt. Ltd., Delhi
September 1, 2015 - August 1, 2016Built native Android apps in Java with custom UI, SQlite local storage, and REST integration; delivered client projects end-to-end from specification to Play Store release. Implemented Retrofit + OkHttp REST clients, fragment-based navigation, Material Design components, and AsyncTask/handler-based background work handling across multiple client app releases. Shipped 12 production apps across Play Store, Amazon Appstore, and enterprise channels. Architected a single codebase serving multi-tenant white-label deployments and shipped hardware-integrated mobile features in Flutter (NFC, BLE, UHFRFID, and Nordic DFU firmware updates). Led successful native Android → Flutter migration for an enterprise product line, reducing cross-platform development time by ~50%. Mentored junior developers and documented Flutter conventions used across multiple projects.
Android Developer at Aay Aam Software Pvt. Ltd., Delhi
September 1, 2015 - August 31, 2016Built native Android apps in Java with custom UI, SQLite local storage and REST integration; delivered client projects end-to-end from spec to Play Store release. Implemented Retrofit + OkHttp REST clients, fragment-based navigation, Material Design components, and async Task/Handler-based background work across multiple client app releases. Shipped 12 production apps across Play Store, Amazon Appstore and enterprise channels. Architected a single codebase for multi-tenant platform services and led native Android -> Flutter migrations for an enterprise product line, reducing cross-platform development time significantly. Mentored junior developers and documented internal Flutter conventions across multiple projects.
Education
B.Tech in Computer Science at Uttar Pradesh Technical University
January 1, 2013 - July 23, 2026B.Tech in Computer Science at Uttar Pradesh Technical University
January 1, 2013 - January 1, 2013Qualifications
Industry Experience
Software & Internet, Healthcare, Financial Services, Retail, Education, Professional Services, Telecommunications, Computers & Electronics, Manufacturing, Transportation & Logistics
Hire a App Developer
We have the best app developer experts on Twine. Hire a app developer in Ghaziabad today.