Available to hire
I’m Sudheer Karumanchi, a mobile-focused software engineer with 12+ years of experience delivering native and cross-platform apps across Android and iOS, as well as backend and cloud integrations. I enjoy architecting scalable, secure mobile solutions that work offline, handle device communications (BLE, USB, NFC, Wi-Fi), and stay reliable with real-time data through REST APIs and cloud services. I’m comfortable leading small teams, mentoring peers, and delivering high-quality software in Agile environments.
Throughout my career I’ve worked on diverse domains such as aviation, manufacturing, healthcare, and hospitality, leveraging Flutter, React Native, Xamarin, and native Android. I stay current with platform updates and best practices, and I’m motivated by solving complex problems with practical, maintainable design.
Skills
Language
English
Fluent
Japanese
Intermediate
Work Experience
Sr. Mobile Developer at Flight Pro International
January 1, 2020 - PresentDeveloped responsive device-specific UIs using Flutter; managed app logic with BLoC; offline data sync with Hive; integrated biometric login; consumed RESTful APIs for real-time flight data; implemented push notifications via Firebase; followed cybersecurity best practices; QA via Firebase App Distribution and TestFlight; released production builds to App Store and Google Play.
Technical Lead / Manager at L&T Technologies Services (LTTS)
August 1, 2024 - October 16, 2025Led mobile delivery and architecture for multiple Flutter-based projects, including BLE-enabled lighting control. Defined scalable architectures, implemented custom widgets, and created reusable libraries. Guided Agile delivery, mentored teams, and ensured on-time milestones across diverse client engagements.
Flutter Developer at LTTS – Lighting (Current Lighting)
August 1, 2024 - October 16, 2025Developed a layered Flutter app for Bluetooth-enabled luminaires with RGBW/color features. Implemented BLE discovery, pairing, and color control; used ChangeNotifier/Provider for state management; implemented data persistence via sqflite; supported Android/iOS with offline capabilities; built color presets and grouping.
Flutter Developer at LTTS, Hyderabad
November 1, 2022 - October 16, 2025Worked on Green Commune, a sustainability-focused app. Compared Flutter vs RN for PWAs, integrated enterprise login via LTTS Active Directory, and built dashboards, RSS feeds, video listing, and admin/user data models with Azure/GCP exploration for analytics.
Lead Developer at Carrier (Hyderabad)
February 1, 2024 - October 16, 2025Equip Touch is an Android app (Cordova) being migrated to a unified codebase using React Native to leverage existing BACnet stack. Defined architecture, created reusable Android libraries for native features, ported BACnet data exchange to a reusable npm plugin, and implemented UI components for scheduling/settings with JSON-driven screens.
Lead Developer at Halliburton
June 1, 2022 - October 16, 2025iOS app for HAL customers with real-time fracture data visualization. Proposed MVVM architecture, API interfaces via Swagger, Okta authentication, and Azure SignalR Service for live streaming. Integrated charting libraries and app insights for diagnostics.
Project Lead at Trimble
December 1, 2021 - October 16, 2025GS820 BLE-based operator app: migrated HMI screens, designed a dynamic dashboard for sensor data, performed code reviews to ensure high maintainability, and supported Agile delivery with stakeholder collaboration.
Tech Architect/Project Lead at Watkins/Endless Pools
January 1, 2021 - October 16, 2025Unified Android/iOS app to control Endless Pools Swim Spas via BLE, enabling device discovery, offline workout creation, social sharing, and offline registration. Led project planning, risk assessment, and UI migration from HMI screens; created tutorials and debug logging.
Sr. Android Developer at Sinfonia
March 1, 2020 - October 16, 2025Sensor Node Monitor for BLE-connected sensors, using MVC and Android Bind Service. Implemented BLE GATT operations, data mapping, MPAndroidChart for graphs, Japanese localization, and CSV export. Conducted unit testing with mocks and SonarQube analysis.
Sr. Android Developer at Ingersoll Rand
December 1, 2018 - October 16, 2025INSIGHT Connect mobile app for QX tools over USB OTG; modular UI decoupled from business logic; command protocol for tool communication; multi-language support; data read/write optimization for cloning workflows.
Sr. Android Developer at KONE
February 1, 2018 - October 16, 2025Automated Elevator Caller prototype using beacons; API calls via OkHttp; location determination logic; reliability tests across multiple beacons and devices.
Android Developer at Regalware
October 1, 2017 - October 16, 2025IoT/recipes app for smart skillet control; BLE service manager; pre-programmed recipes database; circular progress UI; video download manager; multilingual support.
Android Developer at OSRAM
November 1, 2016 - October 16, 2025T4T-F NFC-based luminaire configuration; NFC-V ISO 15693 interactions; XML Pull Parser usage; database for configurations; integrated Google Maps for location context.
Android Developer at Stratosphere IT Services
March 1, 2016 - October 16, 2025Connected Aquarium mobile app: multi-USB/IoT integration, UDP/TCP communication with Tetra hardware, calendar-based reminders, OpenCV color analysis, multilingual localization.
Android Developer at United PHG
August 1, 2016 - October 16, 2025IoT-enabled Connected Aquarium app: UI for multi-device control, UDP/TCP data exchange, calendar reminders, local push notifications, and basic data visualization.
Sr. Mobile Developer at Flight Pro International
January 1, 2020 - PresentBuilt responsive, device-specific UIs using Flutter for phones and tablets; offline data sync with Hive DB; biometric login (Face ID/Touch ID); RESTful APIs; implemented push notifications via Firebase Cloud Messaging; cybersecurity practices; QA testing and release to App Store and Google Play.
Flutter Developer at LTTS (L&T Technologies Services), Hyderabad, India
August 31, 2024 - October 16, 2025Developed Flutter-based mobile applications to control BLE-enabled luminaires; created custom widgets for color selection (Color Slider wheel, Palette, presets); implemented BLE discovery, pairing, and color setting; used Provider for state management; implemented local data persistence with sqflite; design using SOLID principles; tested on Android and iOS.
Lead Developer at Carrier
February 29, 2024 - October 16, 2025Equip Touch app rewrite to React Native; architecture; BACnet data exchange; created reusable Android libraries; UI for scheduling and KPIs; JSON-driven UI.
Lead Developer at Halliburton
June 30, 2022 - October 16, 2025iOS app for HAL customers; MVVM architecture; SignalR integration; Okta auth; UCW/Smart Fleet RESTful APIs; Azure SignalR; plotting with 3rd party libraries; app insights for logging/diagnostics.
Project Lead at Trimble
December 31, 2021 - October 16, 2025GS820 BLE-connected operator app; dashboard; code reviews; 85% test coverage; agile; Xamarin Forms.
Tech Architect/Project Lead at Watkins Endless Pools
January 31, 2021 - October 16, 2025Unified mobile app for Endless Pools Swim Spas; BLE connection; offline registration; social sharing; tutorials; MVVM; offline-first architecture.
Sr. Android Developer at Sinfonia, Japan
March 31, 2020 - October 16, 2025Sensor Node Monitor app with BLE GATT; localization for Japanese; CSV export; unit tests; architecture patterns; used MPAndroidChart for data visualization.
Sr. Android Developer at Ingersoll Rand
December 31, 2018 - October 16, 2025INSIGHT Connect app for tool configuration via USB OTG; modular UI; multi-language support; command protocol for QX tools; data read/write performance optimizations.
Sr. Android Developer at Kone, Sweden
February 28, 2018 - October 16, 2025Automated elevator caller prototype using beacons; location-based API integration; reliability testing; RS and HLD contributions.
Android Developer at Regalware, United States
October 31, 2017 - October 16, 2025IoT and enterprise solution for recipe content and electric skillet control; BLE communication; pre-programmed recipes; download manager for videos; dynamic UI widgets.
Android Developer at OSRAM, Germany
November 30, 2016 - October 16, 2025T4T-F: NFC-based luminaire configuration; NFC-V ISO 15693; XML data parsing; database design; Google Maps integration.
Android Developer at Stratosphere IT Services (seconded to LTTS), Noida
March 31, 2016 - October 16, 2025Connected Aquarium mobile app: BLE data exchange; multi-sensor support; HTTP client with XML/JSON parsing; UDP/TCP/socket communication; calendar reminders and offline capabilities.
Android Developer at United PHG, United States
August 31, 2016 - October 16, 2025IoT/enterprise mobile app development; BLE/USB device integration; cross-platform considerations; multilingual support.
Sr. Mobile Developer at Flight Pro International
January 1, 2020 - PresentBuilt responsive, device-aware mobile UIs using Flutter for phones and tablets; managed app logic with BLoC and offline data sync via Hive DB; implemented biometric login (Face ID / Touch ID); consumed RESTful APIs for real-time flight data; integrated Firebase Cloud Messaging for push notifications; followed cybersecurity best practices including encrypted storage and secure APIs; conducted QA testing via Firebase App Distribution and TestFlight; released production builds on App Store and Google Play.
Flutter Developer at LTTS (Lighting) – Current Lighting
August 31, 2024 - October 24, 2025Developed BLE-enabled lighting controls with a layered Flutter/Dart architecture; created custom color picker widgets; integrated BLE device discovery, pairing, and color setting; used Provider for state management and sqflite for local persistence; ensured cross-platform (Android/iOS) functionality and offline support.
Lead Developer at LTTS, Hyderabad, India
November 30, 2022 - October 24, 2025Led Flutter development for Green Commune: sustainability dashboard with responsive UI, custom questionnaire widgets, enterprise login via LTTS Active Directory, and data analytics proofs of concept using GCP vs AWS; designed admin vs user data models and admin dashboard.
Lead Developer at Halliburton
June 30, 2022 - October 24, 2025iOS mobile app for monitoring job details and real-time fracture measurements; MVVM-based architecture; real-time data streaming via Azure SignalR; integrated Swagger-based APIs; app insights for diagnostics; used Xamarin iOS for development.
Project Lead at Trimble
December 31, 2021 - October 24, 2025GS820 operator app: BLE-based data exchange, dashboard for sensor information, and dynamic layouts with data-driven UI; performed code reviews, ensured test coverage, and supported agile delivery.
Tech Architect/Project Lead at Watkins – Endless Pools Swim Spas
January 31, 2021 - October 24, 2025Unified mobile app (iOS/Android) to control pools via BLE; implemented offline workout creation/tracking, social sharing, and tutorials; designed MVVM structure with offline sync and debugging facilities; authored project plans and risk assessments.
Sr. Android Developer at Sinfonia, Japan
March 31, 2020 - October 24, 2025Sensor Node Monitor: BLE-based BLE GATT communications, MVC pattern, localization (Japanese), data export to CSV, and unit testing with SonarQube.
Sr. Android Developer at Ingersoll Rand
December 31, 2018 - October 24, 2025INSIGHT Connect app: USB OTG communications, modular architecture; implemented command protocol for tool data exchange, dynamic UI for various tool modes, and multi-language support.
Sr. Android Developer at Kone, Sweden
February 28, 2018 - October 24, 2025Automated Elevator Caller prototype using beacons; implemented location-based API calls and mapped data using beacon identifiers; reliability testing across devices.
Android Developer at Regalware
October 31, 2017 - October 24, 2025IoT and enterprise app providing predefined recipes and BLE-based skillet control; designed reusable BLE service manager and database for pre-programmed recipes; implemented download manager for recipe videos.
Android Developer at OSRAM
November 30, 2016 - October 24, 2025T4T-F: NFC-based luminaire configuration; implemented NFC read/write (NFC-V ISO 15693), XML data parsing, and GPS mapping; designed config database.
Android Developer at Stratosphere IT Services / LTTS (Noida) – Mobile Apps
March 31, 2016 - October 24, 2025Connected Aquarium app: IoT control via USB/Wi-Fi, UDP/TCP data exchange with Tetra hardware, offline reminders, multilingual support; designed reusable HTTP client and BLE integration.
Android Developer at United PHG
August 31, 2016 - October 24, 2025Connected aquarium-related mobile solutions; UI design for multi-resolution screens; UDP/TCP/socket communication for IoT devices; localization and push/reminder features.
Education
M.S. IT at University of Klagenfurt
January 11, 2030 - January 1, 2012B.Tech IT at Jawaharlal Nehru Technological University (JNTU)
January 11, 2030 - January 1, 2007M.S. (IT) at University of Klagenfurt, Klagenfurt, Austria
January 11, 2030 - January 1, 2012B.Tech (IT) at Jawaharlal Nehru Technological University (JNTU), Hyderabad, India
January 11, 2030 - January 1, 2007M.S. (IT) at University of Klagenfurt, Klagenfurt, Austria
January 11, 2030 - January 1, 2012B. Tech (IT) at Jawaharlal Nehru Technological University (JNTU), Hyderabad, India
January 11, 2030 - January 1, 2007Qualifications
M.S. (IT)
January 11, 2030 - January 1, 2012B.Tech (IT)
January 11, 2030 - January 1, 2007Industry Experience
Software & Internet, Manufacturing, Healthcare, Education, Media & Entertainment, Transportation & Logistics, Travel & Hospitality, Professional Services, Other, Telecommunications
Skills
Hire a App Developer
We have the best app developer experts on Twine. Hire a app developer in Houston today.