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4.8/5
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  2. Development & IT Talent
  3. Mobile App Developers
  4. (Current) Android Developers
  • $48 hourly

    • 4.2/5
    • (11 jobs)
    I started in mobile development before the invention of the iPhone in a mom-and-pop games company creating the first multiplayer cellphone games for Qualcomm's BREW platform in C and C++. Since then, I've done freelance and speculative work in many languages, especially Java and Kotlin, and created a few apps which can be seen on my app store page, demonstrating the use of Amazon Web Services S3, Lambda, and Cognito integration; TextToSpeech and SoundPool/MediaPlayer resources; and a custom and user-customizable InputMethodService (built-in keyboard), among other things. (See my Google Play store linked below.) I'm seeking jobs to make use of and expand my experience in Kotlin, Android, and AWS and to this purpose I am happy to dive into existing code to solve bugs and insert new functionality, in addition to from-scratch development. Recent and Current Projects: IoT Bluetooth Display and Relay - Android App in Kotlin for phone/tablet and wearable Real-time control, calibration, processing, display, relay, and recording/playback of multiple remote sensors of various types in custom groupings and sessions. Maintaining bluetooth connection through out-of-range and device interruptions. WeeGee - Android App in Kotlin, Amazon Polly, under development Experimental alternative communication system in which touch interaction over custom dynamic menus builds strings of phonemes spoken aloud by the device's text-to-speech engine or Amazon's Polly service. DecodeTheNews - Android App in Kotlin, Amazon S3 and Lambda, released in October 2018 Challenging cryptogram game presenting current or historical headlines rather than quotes and a sophisticated interface. ImageKeyboard - Android App with InputMethodService, released February 2019 For users of icon-based alternative or augmentative communication, this app converts a directory tree of named images into a paged keyboard that can be set to replace the native Android keyboard in any text-input context. Insert and delete whole words, making text editing easier. Customizable preferences include grid size, highlight, trail, and other feedback behavior, touch sensitivity, and page navigation options. Retains several custom keyboards for easy context-swapping. GridMaker - Javascript Chrome App/Electron, under development as an Android module In support of the ImageKeyboard app, this program automatically parses icon grid images into a directories of named icon images, using OCR where possible. ChooseBook - Android App with Amazon S3, released in June 2018 Choose-your-own-adventure style ebook reader for young kids with zoom-and-pannable pictures, text-to-speech reader, and links between pages for easy navigation. A Javascript web page helps organize text, pagelinks, and images for each book in JSON files stored in Amazon S3. The app can browse available titles and download selected books, to view immediately or store on device for offline use. DecodeTheNews - Web Game, released 2015 Javascript/PHP application which finds and encrypts current headlines, storing them along with letter frequencies, a list of unique words, and other statistics for use by the cryptogram-style game. Visual tools in the game, including a pattern-matching dictionary, help players solve the cryptogram. A timer and leaderboard add suspense. Users can create an account or track their game history through a unique ID based on ip and computer configuration. Past Projects: RylaCampbell.com - Wordpress site with custom photo gallery with thumbnail navigation Songtunnel.com - PHP/MySQL Web Page, released 2007 A lyrics search site which grabbed and indexed song lyrics from other websites and enabled an advanced text/artist/album search. Matching songs are sorted by relevance with title, artist, album, year, and lyric snippet, as well as links to the Amazon media sample and "Buy now" referral link if available. Multiplayer Snake - C++/BREW Mobile app with Java, released 2005 The first true live-action multiplayer game on this platform. Developed to show off Entelepon's seamless networking layer. In offline and low-population games, non-player-controlled snakes using path-finding and goal-balancing algorithms fill in for other players with different levels of difficulty. Multiplayer Tank - C++/BREW Mobile app with Java, released 2004 The first turn-based multiplayer game on this platform where both player's actions were graphically represented in real time on the game-board. First use of Entelepon's UDP messaging layer. Offline play was available, against an AI using path-finding and cost/benefit strategies to simulate an intelligent opponent. Players could be matched at random or from a group of users within a custom "channel". Pre-coded taunts added a bit of social interaction. Dozens of game maps and random tank-fleet configurations made each game unique.
    vsuc_fltilesrefresh_TrophyIcon Android
    Bluetooth
    JavaScript
    MySQL Programming
    Java
    Amazon Cognito
    Amazon Polly
    Amazon S3
    Kotlin
    Android App Development
  • $60 hourly

    • 5.0/5
    • (17 jobs)
    I'm a software developer with two and a half years of experience here on Upwork. With 20+ jobs and over 10,000 hours of work behind me here on upwork I learned a lot about what it takes to make great apps. I have created numerous tools and boilerplates to assist me in my business, which allow me to implement common features much faster. I have experience in all aspects of mobile app development. I'm well organized, passionate, honest, and I love my job. My English is fluent and I'm always available online. I work 7 days a week.
    vsuc_fltilesrefresh_TrophyIcon Android
    User Interface Design
    User Experience Design
    SQL
    Android SDK
    Git
    Kotlin
    Java
    Android App Development
  • $65 hourly

    • 4.9/5
    • (37 jobs)
    A dedicated VPN developer with 6+ years of experience in the VPN industry. Providing VPN solutions for Android, iOS, macOS, Windows, and other major operating systems, along with protocol expertise in OpenConnect, OpenVPN, WireGuard, & Shadowsocks. ✅ Top-Rated Plus Upwork Contractor ✅ 100%+ Job Success Rating ✅ 90% Above Re-hire Rate ✅ VPN app Development. Open Connect, Open VPN, Wireguard, Shadowsocks ✅ iOS, Android, Windows, Mac, TV, Browser, Router ✅ iOS & Android Native and Cross-platform App Development ✅ Fullstack Web App Development (Laravel - PHP - MySQL) ✅ VoIP app Development. Opensource and Private SDK ✅ Website Development Mobile Application development: - Objective C, Swift - Java - Cross-Platform (ionic) Web Application development: - Laravel Framework - Codeigniter Framework - Wordpress - MySQL Website Development: - Wordpress VOIP Technology Expertise: - Open source PJSIP for VOIP client Application [Softphone] - Open source Asterisk for VOIP server Application [Billing Software] - Open source Kamailio for SIP Proxy - XMPP, Jabber, and Openfire for Instant Messaging App - OTT app development experience VPN Technology Expertise: - Open VPN (Android and iOS) - Open Connect (Android and iOS) - Wireguard, Shadowsocks (Android and iOS) Custom Project Development Experiences: - VPN Client APP & Admin/Management Portal - Mobile Dialer / Softphone - Billing Software for Softswitch - Instant Messaging Software - Live Chat Application - Hospital Management System
    vsuc_fltilesrefresh_TrophyIcon Android
    VPN
    Vue.js
    PHP
    Objective-C
    Android App Development
    Laravel
    SQL
    iOS Development
  • $44 hourly

    • 5.0/5
    • (54 jobs)
    Hi. I’m a native Android developer with 7+ years of software development experience. I’m working with modern development stack: Android Jetpack, AndroidX, Coroutines, LiveData, DataBinding, Room, Rx, DI, MVVM, Git, etc. I also have experience in​ using Flutter/Dart to build cross-platform solutions. Some areas in which I have extensive experience: - Media processing (photo, video, audio). - Geolocation. - Integration of third-party API like Facebook, Google, Twitter, Dropbox, Amazon. - Firebase services (FCM, Analytics, Crashlytics, AdMob, etc.). - Machine learning. - In-App Purchase. - Converting Web/IOS apps to Android. - And more… Please feel free to contact me and I'll help you at any stage, from an idea or small app to a full-scale solution. Thanks!
    vsuc_fltilesrefresh_TrophyIcon Android
    Firebase
    Smartphone
    Java
    Android SDK
    Android App Development
    Flutter
    Kotlin
    Mobile App Development
  • $40 hourly

    • 4.9/5
    • (26 jobs)
    🌟 Top-Rated Upwork Professional 🧑🏻‍💻 9+ years of experience 📱 Android | Kotlin | Java | Jetpack Compose | Kotlin-Multiplatform| Flutter | WearOS | AndroidTV | 🚀 AI | ChatGPT | 💻 Firebase | VoIP | Linphone With over 9 years of extensive experience as an Android Developer, I specialize in native Android application programming with a strong focus on SCRUM/Agile workflow. 
 
I have a proven track record of delivering high-quality mobile applications in various domains, including:
 * Airline Domain * Banking Domain * Cargo Management Domain * Logistics Domain * Financial Domain * Social Media/Dating Domain with Video/Audio Chats * Location Tracking Domain
 My expertise in mobile development includes:
 * Programming Languages: Java, Kotlin * Architectural Patterns: MVVM, MVP, MVC * Design Patterns, Custom Controls, and REST API integration * Material Design, Mobile UI/UX, and Firebase integration (AdMob, Analytics, A/B testing, etc.) * Jetpack Compose, Jetpack Navigation * Firebase Realtime Database and Storage * Android SDK, NDK, Open Source, Support Libraries * Reactive Programming with rxJava and rxAndroid * Dependency Injection using Dagger, Kodein, and Hilt * Databases: SQLite, Room, Realm, Page * Network Libraries: Retrofit, OkHttp, Volley, ktor * Image Loading Libraries: Picasso, Glide * Crash Reporting and Analytics Tools: Crashlytics, Firebase, Fabric, LeakCanary, Timber * Other Libraries: Gson, AutoValue, JodaTime, AndroidJob, Google Services * Sockets/SignalR * Kiosk Mode * SonarQube code coverage * Kotlin-Multiplatform (One POC)
 * Wear OS & Smartwatch development In addition, I am an expert in the Linphone SDK, a powerful tool for building voice and video communication applications. I have in-depth knowledge of integrating and customising the Linphone SDK to create high-quality, real-time voice and video chat functionalities within Android applications. I am experienced in implementing Linphone's advanced features, including call management, audio/video codecs, encryption, push notifications, and more. Whether you need to develop a VoIP application from scratch or enhance an existing app with Linphone capabilities, I can provide the expertise you require.
 I have integrated various features and technologies into Android applications, including:
 * Beacons integration for proximity-based interactions * Calendar API integration for managing events and schedules * QR Code integration for scanning and processing QR codes * OCR (Optical Character Recognition) integration for text recognition and extraction
 For multimedia capabilities, I have integrated Video Chat using WebRTC, Twilio, and Agora, as well as Audio Streaming. I am familiar with ExoPlayer for HLS Video Streaming (HTTP Video Streaming), RTSP Video Streaming, and DASH Video Streaming.
 Other skills and features I offer include Custom Calendar development, Media Gallery implementation, Background Download and Upload functionality, Tiff file format handling in Android, Live Streaming using Agora SDK, Deep Linking, LeakCanary for memory leak detection, and code annotations to improve the linting process.
 Experienced Kotlin Multiplatform Developer with a track record of delivering efficient cross-platform solutions. Proficient in Kotlin Multiplatform Mobile (KMM) and skilled in creating high-performance apps for Android, iOS, web, and more. Experienced Jetpack Compose Developer, proficient in creating dynamic, interactive, and modern Android UIs. Skilled in leveraging Jetpack Compose's power to build visually stunning and responsive applications. - Experience migrating target api level 33 - Update existing app I am fluent in English and passionate about Android development. Please feel free to reach out to me with any Android-related questions or projects. I would be pleased to help you bring your ideas to life.
    vsuc_fltilesrefresh_TrophyIcon Android
    User Profile Creation
    User Authentication
    Payment Functionality
    Social Media Account Integration
    Wear OS
    In-App Purchases
    VoIP
    NFC
    Firebase
    Firebase Realtime Database
    Push Notifications
    API Integration
    Bluetooth
    Map Integration
    Java
    Android App Development
    Location-Based Service
    Kotlin
  • $35 hourly

    • 4.8/5
    • (39 jobs)
    I am a Mobile developer with more than 4 years of experience and lots of successful projects behind. ♨ Technologies: ✔ Java(4 years) / Kotlin(2 years); ✔ Git; ✔ Android SDK/NDK; ✔ Android Jetpack (WorkManager, Room, Navigation, Lifecycle); ✔ Firebase (Analytics, Authentication, Cloud Firestore, Cloud Functions, Cloud Messaging, Cloud Storage, Crashlytics, Performance, Realtime Database, Remote Config); ✔ Gradle (Groovy and Kotlin DSL); ✔ RxJava, Kotlin Coroutines; ✔ Hilt, Dagger 2, Toothpick; ✔ SQLite, Room, Realm; ✔ Google APIs (Maps, Drive, Tasks, Places); ✔ ExoPlayer (DASH, SmoothStreaming); ✔ Glide; ✔ REST/JSON/XML ✔ Retrofit 2; ✔ Proguard, R8; ✔ Lint, Ktlint, CheckStyle; ✔ Crashlytics, Instabug, Leakcanary; ✔ Junit, Mockito, Espresso; ✔ MVVM, MVP, Clean Architecture; ✔ Facebook, Google, Linkedin, Twitter, and other social applications auth communication; ✔ 3rd party libs integrations. Thank you in advance for your time and consideration.
    vsuc_fltilesrefresh_TrophyIcon Android
    Tablet
    Flutter
    Kotlin
    React Native
    CSS
    HTML
    Mobile UI Design
    SQL
    Android SDK
    Android App Development
    Java
  • $60 hourly

    • 5.0/5
    • (52 jobs)
    8+ years of experience working on native Android applications for high profile clients and businesses. I've strong Java/Kotlin programming skills including low-level performance optimizations and memory management. ✔ Ml-kit, OpenCv, TensorFlow, Camera, Image Processing ✔ Clean Architecture, MVVM, Firebase, Coroutines, Live data, DataBinding, Dagger2/Hilt, Room, Retrofit, Glide, Payments
    vsuc_fltilesrefresh_TrophyIcon Android
    Android Studio
    Native App Development
    Firebase
    Java
    Android App Development
    Kotlin
    Mobile App Development
    SQLite
    Camera Operation
    NFC
    Mobile App
    Android NDK
    Android SDK
    OpenCV
  • $30 hourly

    • 5.0/5
    • (10 jobs)
    Looking for Android iOS mobile application developer? You are in the right place. I'm Hafiz, founder at NestedPie Technologies and a full-time freelancer. I help startups achieve goals efficiently using the software product. While the majority of developers spend time in product making only, I provide potential consultancy to my clients from start to end which is the reason why my clients want to make me a long-term part of their startup. I have been providing excellent services with UI/UX || Firebase || Rest APIs || Google Maps || Payment Gateways || Project Managment || Communication || Customer Service. How to get started: ➔ Create a job ➔ Invite me ➔ Discuss about the project requirements ➔ Leave the rest on me Process includes: ➔ Project Discovery: In this, we will schedule a call or chat session to understand the problem statement or the business/technology problem. ➔ Technical Solution & Project Scope: - Detailed scope of work - Technical Details - Timeliness & Cost Breakdown - Project Milestones ➔ Project Execution: Once the project is finalized and kickoff is done we will start the project Our project execution steps include: - Design Mockups: Design web/app screens to demonstrate the final look of the solution. - Development (Coding) Phase: Actual Development phase with regular updates and meeting sessions with client. - Quality Assurance Phase: This includes UI/UX, Beta, and User Acceptance Testing. - Deployment and Maintenance: app/web release for the end users on stores or domains. Once the app is live we will provide you with free 60 Days of Maintenance. GET QUOTATION TODAY!
    vsuc_fltilesrefresh_TrophyIcon Android
    iOS
    API Integration
    Mobile App Design
    Firebase
    Dart
    Android App Development
    Push Notifications
    Flutter
    Mobile App Development
    Google Maps API
    Hybrid App Development
    iOS Development
    Mobile App
  • $42 hourly

    • 5.0/5
    • (36 jobs)
    ChatGPT integration || Augmented Reality || Artificial Intelligence || Machine Learning ✴️ EXPERT-VETTED Top 1% iOS & Android App Developer on Upwork 🏆 UPWORK TOP 1% - EXPERT-VETTED Mobile App Developer 🚀 UPWORK TOP RATED PLUS Mobile App Developer ✅ 30+ SUCCESSFUL PROJECTS in iOS & Android Mobile App Development 🔥 8000+ UPWORK HOURS ⭐ 100% JOB SUCCESS SCORE I am Full-time Independent Mobile App Developer (Want to create an app?), I am a highly skilled software engineer with about 9+ years in mobile app development. I have developed and published 50+ iOS & Android apps. Here are some of my technical skills: Languages: Apple App Developer, Swift, Combine, SwiftUI, Objective-c, JAVA, Kotlin, React Native & Node.js, ChatGPT4 API Tools: Xcode-11, Android Studio, JDK, IDE My experience (Mobile App Developer Social, Dating, OnDemand, eCommerce, Grocery,Fitness App Development.) in programming includes but not limited to the following area of expertise: - In Design using Autolayout, Constraint - CoreData, Core location, SQLite - Geolocation and Geofencing. - AFNetworking, Alamofire - AVFoundation Framework for Audio, Photo, Video Manipulation - In-App Purchase / Push Notifications - Certificate Generation / Provisioning / Code Signing / App deployment to store - Chat Applications Development - Firebase Integration, AWS - Google, Facebook, Twitter API Integration - Social media integration like Google, Facebook, Twitter, Instagram, etc. - AI, ChatGPT, ARKit, iBeacon, BLE, IoT, Wrist Band, Machine Learning, ChatGPT4 API, etc. -And more I possess an in-depth understanding of the entire app development process and can provide solutions to various technical issues. I prioritise designing and developing apps with easy-to-use, eye-catching designs that provide helpful functions for users. I recently completed 4 SwiftUI, ARKit, Machine Learning, ChatGPT (OPenAI) Artificial Intelligence, Object recognition based iOS Applications & implemented Machine Learning, Artificial Intelligence & IBM Watson; Please let me know if you need Any help in an iOS and Android Mobile App Development. I believe customer satisfaction is key to success and thrive on delivering with 100% satisfaction. Thanks & Regards, Jaydeep
    vsuc_fltilesrefresh_TrophyIcon Android
    Artificial Intelligence
    Social Networking Development
    Business Process Management
    Mobile App
    Apple Xcode
    App Development
    UIKit
    iOS Development
    API Integration
    Kotlin
    PHP
    Swift
    Objective-C
    Mobile App Development
  • $40 hourly

    • 5.0/5
    • (30 jobs)
    With more than 4 years of experience in Unity 3D/2D, I am the most OPTIMAL SOLUTION for your game. I specialize in building interactive 3D & 2D games in most popular and efficient game engine Unity 3D/2D which include: - Cross platform games - Game concept and level designing - Multiplayer integration - Reskin - Ads and in-app purchase - Game optimization - 2D/3D Animation - Graphic Designing I have published several Games on Play Store and App Store. All work is completed by me, so you do not need to worry about your work outsourced to someone else. Maintaining a regular communication is important to me for providing my clients the highest quality of work and 100% satisfaction. As a proof of my experience you can check on my fiverr profile by username razzaq94.
    vsuc_fltilesrefresh_TrophyIcon Android
    WebGL
    AR & VR
    Online Multiplayer
    Unity
    Game Development
    Game Design
    VR Application
    Mobile Game
    Photon Unity Networking
    Firebase
    C#
  • $30 hourly

    • 5.0/5
    • (62 jobs)
    I've been a Unity developer, with game design experience of a total of a bit over 5 years now, I have many of projects under my belt, mobile, WebGL, PC, VR, and even Switch. Feel free to view my portfolio. Almost all entries were coded personally 100% from scratch. I have about five years of game design experience, about two years with Game Maker back in the day, and almost three years with Unity Contact me with any job offers; I am flexible and willing to do almost anything that involves Unity if the price is right.
    vsuc_fltilesrefresh_TrophyIcon Android
    Mobile Game
    Online Multiplayer
    Unity
    Scripting
    3D Design
    C#
    Game Design
  • $20 hourly

    • 4.6/5
    • (16 jobs)
    I am a senior Android Developer having more than 4 years of experience and have worked with some of the top rated Software Development Companies all over Paksitan (Classified). I have expertise in the following: - Android App Development - Android Jetpack Archtiture - MVVM - MVI - Dagger2 - Retfrofit - Volley - JAVA - Room - ViewBinding - ViewModel - LiveData - Mockito - Glide - Facebook - Payment Gateway Integration - Google API's - Google Map API's - Linkedin SDKs - Open-cv - ML-Kit - OCR - Camera API - WebRTC - Bluetooth Low Energy Devices - NDK (C/C++ Liberaries) You name it. Projects: - Audio/ Vedio (multimedia) players - Ecommerce mobile apps - IoT based apps - Uber clone - Document Scanning (QR/OCR) apps - Online Order Tracking - Chat apps - Video Conferencing - Sports Apps - Apps with ML capabilities - Activity tracking apps with sport bands (BLE) Reasons to work with me: - I have a set process of project execution i.e getting the requirements, analyze and discuss with the respective client, preperation of proposals and deliver results on time. - I provide 24/7 support - Time is valuable that is why I respect the deadlines and deliver as such. - I work with honesty and I will give you suggestions and ideas on how to imporve your project and make it cost effieicent.
    vsuc_fltilesrefresh_TrophyIcon Android
    Apple Xcode
    Android SDK
    Mobile App Development
    Android Studio
    Objective-C
    Swift
    Smartphone
    Android App Development
    Kotlin
    iOS
    C++
    Java
  • $20 hourly

    • 5.0/5
    • (23 jobs)
    Hi my clients, My name is Duckie, a senior mobile developer. I'm working at the top #2 e-commerce company in Vietnam. My job here is use my knowledge, abilities, skills to build a world class application. I don't want to use my free time for wasted things, so I decide to become a freelancer, use my time to do more, build more. I have a lot of experiences with complex application, concurrent processing, recycle UI component, etc. I also have 5 years experiences in React-Native and Flutter, over 10 projects and 2 of them from Ministry of Education Malaysia, over 50K active users each app. I hope that my things can impress you, so that you can give me a chance to sit with you together. Thanks for spend your time to read my brifts, Cheers.
    vsuc_fltilesrefresh_TrophyIcon Android
    Flutter
    React Native
    iOS
  • $45 hourly

    • 5.0/5
    • (60 jobs)
    I'm an experienced and professional mobile and software developer doing freelance, working remotely (telecommute) and looking for great projects to work on. I love to make your ideas alive. I care about every single line of my code. Summary of Qualifications • Expert understanding of core mobile technologies standards • Development of software, mobile web apps • Solid understanding of how the android OS works for the best performance • Passionate about all aspects of development • Modern tooling and workflow • Ability to write high-performance, maintainable and reusable code • Appreciation for quality, usability, user experience (UX), accessibility and compatibility • 5+ years of experience • Highly motivated, self-starter, fast learner, hard worker, organized, attentive to details and a team player • Good communication skills. Fluent in English , both written and verbal • Sense of aesthetic and design • Always up-to-date with the latest technologies, techniques, optimizations and best practices Hire me!
    vsuc_fltilesrefresh_TrophyIcon Android
    In-App Purchases
    Social Media Account Integration
    Camera
    Firebase
    Mobile Programming
    Mobile App Development
    Core Java
    Java
    Android App Development
  • $50 hourly

    • 4.9/5
    • (8 jobs)
    Self-taught software developer with more than 6 years of professional experience. Mostly worked on mobile application projects using Java/Kotlin and Swift programming languages. Experiences also include creating REST APIs, working with database technologies, providing Cybersecurity consultancy, end-to-end Mac and Windows Application development and UI/UX Design using Adobe Tools. Subjects of Interest Native Mobile Application Development, Cybersecurity, Software Design Patterns & Architecture, Financial Technologies, Game Development.
    vsuc_fltilesrefresh_TrophyIcon Android
    RxJava
    iOS Development
    Android SDK
    Firebase
    iOS SDK
    Android App Development
    Camera
    API Integration
    iOS
    Native App Development
    Swift
    Kotlin
    Java
  • $35 hourly

    • 4.7/5
    • (7 jobs)
    Senior mobile app developer (Full-time Freelancer), Having 9+ years of experience in the mobile development field. ✅ Skills ˜˜˜˜˜˜˜˜˜˜ - Flutter - Swift - Objective-C - Android ✅ Basic Intro ˜˜˜˜˜˜˜˜˜˜˜˜˜ I have wide experience in apps development for both iOS/Android mobile devices. During my professional career, I developed different applications like e-commerce, Dating, Sports, Chatting, Shopping, Educational, location/map-based, Driver/Passenger like uber, travel, Weather, and more. It will be my pleasure to give you the best satisfactory solution that you expected from me. I exactly know the worth of your work, deadline, and budget that you will offer. I am a very responsible and passionate developer who loves good programming practices. So feel free to contact me and let’s get the conversation started.
    vsuc_fltilesrefresh_TrophyIcon Android
    Agile Project Management
    In-App Purchases
    API Integration
    Firebase
    React Native
    Mobile App Development
    Android App Development
    iOS Development
    Hybrid App Development
    iOS
    Dart
    Objective-C
    Swift
    Flutter
  • $25 hourly

    • 5.0/5
    • (43 jobs)
    𝐆𝐫𝐞𝐞𝐭𝐢𝐧𝐠𝐬, 𝐖𝐞𝐥𝐜𝐨𝐦𝐞 𝐭𝐨 𝐦𝐲 𝐅𝐮𝐥𝐥 𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐩𝐫𝐨𝐟𝐢𝐥𝐞. I am a seasoned Full Stack Developer specializing in Mobile App Development, proficient in iOS Swift and Kotlin (Flutter). I am proud to hold the Top Rated status on Upwork, a testament to my commitment to excellence. With over 8 years of experience, my dedication revolves around crafting resilient and user-centric applications that seamlessly navigate the entire technology stack. 𝐔𝐩𝐰𝐨𝐫𝐤 𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬: - Top Rated on Upwork - Completed 700+ projects in Full Stack Development and Mobile App Development 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: With over 8 years of hands-on experience, I bring a wealth of knowledge to every project, ensuring a seamless and successful development process. 𝑪𝒐𝒓𝒆 𝑪𝒐𝒎𝒑𝒆𝒕𝒆𝒏𝒄𝒊𝒆𝒔: - Full Stack Development - Mobile App Development (iOS Swift, Android Kotlin, React Native) - Front-end Technologies (HTML, CSS, JavaScript) - Back-end Technologies (Node.js, Express, PHP,Laravel) - Database Management (MySQL, MongoDB) - API Integration and Development - Responsive Design - Cross-platform Development (React Native) 𝐊𝐞𝐲 𝐒𝐭𝐫𝐞𝐧𝐠𝐭𝐡𝐬: 𝐇𝐨𝐥𝐢𝐬𝐭𝐢𝐜 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: As a seasoned Full Stack Developer, I adopt a comprehensive approach to projects, ensuring the optimization of both front-end and back-end components for peak performance. 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐌𝐚𝐬𝐭𝐞𝐫𝐲: Focused on mobile app development, I have successfully delivered numerous applications, harmonizing functionality with a refined user experience, showcasing expertise in iOS Swift and Kotlin (Flutter). 𝐎𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐄𝐟𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲: Committed to delivering top-tier work within stipulated deadlines, I employ agile methodologies to adapt swiftly to evolving project requirements. 𝐂𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐢𝐯𝐞 𝐄𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞: Successful projects hinge on effective communication. I prioritize transparent communication and collaborative problem-solving to ensure project success. 𝑲𝒆𝒚𝒘𝒐𝒓𝒅𝒔 Full Stack Development,,Mobile App Development,iOS Swift,Kotlin (Flutter),React Native,Front-end Development,Back-end Development,Node.js,Express,Django,Database Management (MySQL, MongoDB),API Integration,Responsive Design,Cross-platform Development,Top Rated,Project Management,Agile Methodologies,User Experience (UX),Web Solutions,Collaboration and Communication,PHP,Laravel,Flutter 𝐖𝐡𝐲 𝐄𝐧𝐠𝐚𝐠𝐞 𝐌𝐲 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬: Whether you require a comprehensive web solution or an exceptional mobile app in iOS Swift, Android Kotlin, or cross-platform with React Native, I am poised to transform your concepts into reality. Let's initiate a conversation about your project and elevate it to unparalleled heights with my expertise in Full Stack Development and Mobile App Mastery.
    vsuc_fltilesrefresh_TrophyIcon Android
    MERN Stack
    Web Development
    React
    Mobile App Development
    Mobile App Design
    Firebase
    PHP
    iOS Development
    iOS
    Android App Development
    MySQL Programming
    Payment Functionality
    Native App Development
    MongoDB
  • $25 hourly

    • 4.9/5
    • (21 jobs)
    I am a highly experienced and skilled Flutter developer with a passion for creating beautiful, intuitive, and functional mobile apps. With a strong background in software development and a deep understanding of the latest technologies, I am able to deliver high-quality code that meets the needs of users and exceeds the expectations of clients. I have a proven track record of delivering projects on time and on budget, and I am always looking for ways to improve my skills and stay up-to-date with the latest developments in the field. Whether working on a new app from scratch or optimizing an existing one, I am dedicated to creating the best possible user experience and delivering exceptional results. I am a team player and have experience working in a fast-paced development environment. I am also able to work independently and take ownership of projects, making sure that they are completed to the highest standard. I am always open to new ideas and enjoy learning new technologies and programming languages. If you are looking for a highly skilled and experienced Flutter developer, then I am the person you are looking for. I would be happy to discuss your project and how I can help bring it to life.
    vsuc_fltilesrefresh_TrophyIcon Android
    Mobile QA
    Mobile App Development Consultation
    Mobile App Development
    Mobile App Design
    Web Application
    Mobile App
    Push Notifications
    PHP
    Laravel
    API
    Dart
    iOS
    Flutter
    Firebase
  • $30 hourly

    • 5.0/5
    • (9 jobs)
    Experiences Software Engineer - React Native (Jun 2021 - December 2021) Bit Mascot (Pvt.) Ltd. House: 239, Road: 17, New DOHS, Dhaka, Dhaka 1206, BD Projects Business Plaza (React Native) --Business Plaza app is a free powerful communication platform for sporting clubs and their members. The app is a single point to access the club website, club Business Plaza, club e-newsletter, draw and results plus it is used by members to receive benefits from companies that sponsor clubs through Business Plaza. This is an Australian based application. Event Bookings (React Native) --Event Bookings is an all-in-one online event platform that helps the attendees to get the best possible experience. This is an Australian based application. Software Engineer (July 2019 - May 2021) Intelligent Automation Technology Ltd. Block A, House number 145, Rd No 3, Dhaka 1212 Projects Sales App (React Native) -- Sales App used by salespersons for managing invoices and customers etc. and tracks salesperson position. It also generates various kinds of sales and customers report. ERP (CodeIgniter) -- Working as a bug resolver and new feature and module developer Game Store App (React Native) It's a gaming platform to download games and play HTML5 games. Office Bari (Laravel) -- It’s a package system ride-sharing website. Safekeeping SoS App (React Native and Laravel) -- Self-location notification for emergency situations. This app(Android and IOS) was mainly developed for Unilever Bangladesh Limited. There are two types of users such as individual and company. For company users, the location notification message sends via a cloud server. And for individual user location notification send from his/her mobile from the background. Every company we provide a panel for managing employees and notifiers. Khawabnama Android App (React Native and Laravel) -- Dream explanation based on subscription (operator) QC Management for Pypepro (CRM). QC Management for Up Review project Internship (Hyderabad, India) September 2018 – November 2018 Build The World Organization IIIT University, Hyderabad, Telangana, India. -- Worked as a React JS and React Native developer BFF (Laravel) June 2019 – July 2019 -- BANGA FLAVOUR & amp; FRAGRANCE (BFF) provides leading manufacturers of food, beverage, confectionery, dairy, and pharmaceuticals products with a large variety of best ingredients to support them to develop, manufacture, and supply end products with a clear competitive edge in terms of quality, shelf-life, and consumer preference. BasaBari (Final Version) July 2018 - June 2019 --It is a full map-based house and mess searching website. For every house, it shows the nearest hospital, school, super-shop, etc. with distance. A renter can set his preferences to get a notification service. It also provides a house shifting service. (Laravel, Eloquent, JavaScript, HTML, CSS, Bootstrap, Ajax, JQuery, SQL Query, Google API(Map, Mail)
    vsuc_fltilesrefresh_TrophyIcon Android
    Firebase
    Mobile App Development
    React Native
    iOS
    iOS Development
    Google Maps API
    Mobile App
    Smartphone
    Android App Development
    MySQL
    JavaScript
    Laravel
    Business with 1-9 Employees
  • $35 hourly

    • 4.9/5
    • (16 jobs)
    ✅ 100% Job Success ✅ Delivering high-quality apps since 2017 ➜ I have 6+ years of experience in creating native iPhone & Android apps ➜ I have developed a variety of applications for domains such as CRM, E-commerce, Social, Ride Sharing, Business, etc ➜ I also have good experience developing using the cross-platform framework Flutter. ➜ I am a full-time freelance developer and write quality code, clean, and robust code that makes the app run smoother & faster. ➜ Contact me for any iOS/Flutter projects or issues you need help with. 💎 Swift 💎 Firebase 💎 Kotlin 💎 React Native 💎 Google Flutter 🟢 WHO AM I? I have been working with mobile app development for the last 6+ years, I have worked on existing large-scale apps as well as developed applications independently from scratch. ✅ My areas of expertise: ____ • Native iOS Development • Native Android Development • Flutter Development • React Native Development • Troubleshooting code • Bug Fixing • Resolving crashes and memory leaks • Writing clean code using common design patterns such as MVVM, VIPER, MVC, RxSwift, and VIP. ✅ I also provide other services like application updates, and application submission to the app store. ✅ My backend experience is in Google Firebase, using Google Cloud Firestore as a database for storing data of mobile applications. ✅ Contact me today with your application idea to start the engagement process.
    vsuc_fltilesrefresh_TrophyIcon Android
    React Native
    Dart
    Flutter
    Push Notifications
    Kotlin
    Unit Testing
    Web Service
    SQLite Programming
    Core Data
    Firebase
    Swift
    iOS Development
    Mobile App Development
    Native App Development
  • $25 hourly

    • 4.9/5
    • (81 jobs)
    Holding a Rich experience in NFC, RFID & Bluetooth integrated solution. I have a skilled team in Device integration in Android, iOS & Desktop application Rich 20+ years of experience in IT organization. Mentor & Certified Scrum Master Solution Provided for Customers: 1. Unique Product Authentication 2. Know Your Customer - Mobile app by Scanning NFC Passports 3. Enterprise Software for Healthcare Industry with collecting information from Medical Device. 4. Inventory Tracking System using RFID / NFC 5. Employee Tracking using Passive & Active RFID 6. Event Management System using NFC 7. Digital Business Card Experienced in Integrating Mobile App (Android / iOS) with major NFC IC's 1. NTAG424 DNA & NTAG424 DNA Tag Tamper 2. NTAG213 / 215 / 216 3. DESFire Module M890 4. Mifare Classic 1K / 4K / 8K 5. Mifare DESFire EV1 / DESFire EV2 6. Mifare Ultralight & Ultralight C 7. M24LR04E-RDW6T/2 8. NFC-TAG-MN63Y1213_2020 Experienced in NFC & Bluetooth connectivity Readers : 1. ACR122U USB reader 2. ACR 1255U-J1 Bluetooth NFC Reader 3. ACR1311U-N2 Bluetooth NFC Reader RFID Device Integration with Cloud via MQTT: 1. [Passive RFID] 4 Port & 2 Port UHF RFID Fixed Reader 2. [Passive RFID] C72 Handheld UHF Reader 3. [Passive RFID] Sanray UHF RFID Integrated Handheld Reader F5009-H 4. [Active RFID] Sanray Active RFID Fixed Reader 5. [Passive RFID] UHF RFID Tag Printer Build applications using RFID UHF Tags: 1. Smartrac R6 DogBone RFID Wet Inlay (Monza R6) 2. Vulcan RFID Foam Backed Wristband (Monza R6) 3. Confidex Carrier Tough Slim RFID Tag (Monza 4QT) 4. Zebra UHF RFID Cards 5. Omni-ID Adept 650P RFID Cards 6. Triathlon Race Timing UHF RFID Sample Tags Expert Consultation in NFC, RFID & Bluetooth - Mobile App Development - iOS & Android - Mobile App Development - Native (Android - Java & Kotlin, iOS - Swift) & Flutter - Mobile App integration with PCB Boards & External Devices such as Weigh Scale - Server Development - C# Dot Net & Python - Build Interactive Website | Mobile App - UI & UX | Logo Design Proven Track Record - Building complete product for clients - Solution Provider - In Handling and Mentoring teams. Strong engineering & professional skills in Software Development Life Cycle (SDLC), Requirements Analysis, Business Analysis and Solution Architecture.
    vsuc_fltilesrefresh_TrophyIcon Android
    Python
    Wireless Communication
    Bluetooth
    BLE
    NFC
    CSS 3
    Android Studio
    C#
    Java
    Microsoft Visual C++
    C++
    C
    RFID
    Android App Development
  • $17 hourly

    • 5.0/5
    • (6 jobs)
    - First of all, I want to insist that I'm a person of work. I'm responsible, enthusiastic, challenges facing, open minded, fast learner and have can-do attitude. - I can quickly understand a given in-progress project and fix existing bugs and issues - I have 4-year experience in Flutter, mobile cross platform developing, using Dart programming language. - I have about 9-year experience in developing app on iOS platform (using Swift. ObjectiveC and SwiftUI) with many big projects in OTT, social network, blockchain, crypto, DeFi, navigation, travel and productivity aspect. - I'm strong at making animations, view transition - I have excellent knowledge in core concepts such as Object Oriented Programming (OOP), design patterns, memory management, data structure, MVC architecture. - I'm able to submit apps to Apple store, Google Play. - I'm strong at implementing asynchronous and concurrency. - I'm capable of creating framework, SDK for third-party usage. - I'm good at RESTful api or GraphQL communicating with server. - I also have knowledge about blockchain, crypto and all processes on blockchain.
    vsuc_fltilesrefresh_TrophyIcon Android
    VoIP
    iOS Development
    iOS
    UI Animation
    Objective-C
    Swift
    Asynchronous I/O
    Push Notifications
    Flutter
    App Development
    RESTful API
    In-App Purchases
    Dart
    Native App Development
    Team Management
    Git
  • $25 hourly

    • 4.8/5
    • (97 jobs)
    I'm unity developer, skilled in making games and apps for mobiles and desktop. I have 11 years of programming experience(Unity3d, Java, C++). Last 7 years I've been making games/VR apps/AR apps in Unity. For the last 4 years am working as freelancer. Have experience in MMO development , casual games, apps. VR experience - (Oculus, Dream VR), AR experience -(Vuforia, MetaIO, EasyAR, ARkit, ARCore).
    vsuc_fltilesrefresh_TrophyIcon Android
    ARCore
    Augmented Reality
    Unity
    ARKit
    Virtual Reality
    Vuforia
    Photon Unity Networking
    Firebase
    Gear VR Game
    C#
  • $90 hourly

    • 5.0/5
    • (8 jobs)
    I'm a Mobile App Designer, Product Designer, UI/UX Designer, and Web Developer. I'm an expert in Mobile App and Responsive Website Design and work with key stakeholders and company founders to create engaging design experiences. I'm an expert in Native Mobile App Design, iOS Human Interface Guidelines, and Android Material Design. This knowledge allows me to design mobile apps that are usable, and accessible and that follow mobile design best practices. I work well with developers and create designs that are high-performing, easy to build, and easy to scale. I will translate your business objectives into stunning, user-friendly designs. Over 9 years I've worked with dozens of clients, companies, and agencies, from startups to F500 companies, on projects ranging from MVP Mobile App Launches, redesigns of User Interfaces, UX improvements, feature iterations, and more. My workflow for new projects is learning the business needs and objectives for the app design, conducting competitive app research, wire-framing, qualitative usability testing and quantitative usability testing, prototyping, high-fidelity UI design and continuous iteration on the experience based on the findings. All of my processes are modular, and steps can be removed or added to fit the client's budget and timelines. I specialize in: • UX/UI • Animations for Interaction Design • Prototypes Tools: • User Interface: Sketch, Figma • Wire-framing: Sketch, Figma, Whiteboarding • Prototyping: inVision, Principle, Framer, After Effects • Usability Testing: In-person testing, remote usability testing, and Usertesting.com, • Front-End Development: HTML/CSS | Intermediate Knowledge of JavaScript and React, Webflow, Flexbox, CSS Grid • Communicating: Slack, Skype, Google Hangouts, or Upwork messaging • Project Management: Trello, Asana, Jira • Adobe Creative Cloud: Photoshop, After Effects, Illustrator • Developer Collaboration Tools: inVision, Abstract, Zeplin, Figma
    vsuc_fltilesrefresh_TrophyIcon Android
    Rapid Prototyping
    Material Design
    iPad UI Design
    iPhone UI Design
    Product Design
    Mobile UI Design
    User Experience Design
    Figma
    Mobile App Design
    iOS
    Mobile App
    User Interface Design
    Sketch
    Interaction Design
  • $55 hourly

    • 5.0/5
    • (28 jobs)
    I have been freelancing for two years, and have a 100% client satisfaction rate over a variety of complex projects. My speciality is MIDI and audio with native code, but I am also adept at generic Android client work, and can churn out screens at an impressive rate! I have written the most fully featured and music notation app for Android singlehandedly, as well as Forex trading tools, a Midi to MP3 converter, a band management system, forum browsing software and a discussion game for a charity. I have 14 years commercial experience in C/Linux. I adhere to sound software design principals (SOLID, TDD, Clean Architecture). I can learn any new framework extremely quickly, and am up-to-date with the latest Android components and patterns (Jetpack, MVVM, MVI).
    vsuc_fltilesrefresh_TrophyIcon Android
    Mobile App Development
    Kotlin
    Tablet
    Native App Development
    Android SDK
    Android Studio
    Android Room Persistence
    Android App Development
  • $80 hourly

    • 4.8/5
    • (24 jobs)
    A software engineer with 7+ years of experience in mobile development including native Android, iOS and cross-platform solutions. Some mobile applications I developed are available in Portfolio down here, on my GitHub account and in Google Play/App Store. Feel free to contact me for a full list of projects I was part of as well as my complete CV. GitHub: suviPS Google Play: /developer?id=Petar+Suvajac App Store: /us/developer/petar-suvajac/id1474867283 Technologies I have experience with: Android, iOS, Flutter SDK, Java SE, JavaFx, SQL, NoSQL, C, JSON, XML, HTML, WordPress, http/https API communication, ldap/ldaps, Firebase, AWS, DynamoDB, Structures and algorithms I am glad you are reviewing my profile, feel free to contact me if you have any questions, related or unrelated to a job. Have a nice day :)
    vsuc_fltilesrefresh_TrophyIcon Android
    Smartphone
    Android App Development
    iOS Development
    Swift
    Kotlin
    Android App Development
    Mobile App Development
    Java
    Firebase
    Flutter
  • $27 hourly

    • 5.0/5
    • (15 jobs)
    10 years total software experience. 5 years experience in developing mobile apps. I've built apps for Android, iOS, Web, MacOS, and Windows using Flutter. ✅ 20+ Flutter apps from scratch to upload ✅ I have expertise in apps for different areas and audiences: dating apps, jobs apps, chat apps, video calls, audio calls, social apps, tik-tok like apps, games, apps connected to hardware devices (BLE, modbus), task manager apps ✅ I worked on features: chats, messaging, video calls, audio calls, maps, geolocation, BLE, notifications, QR scanning, custom animations, sliders, in-app purchases, webrtc, AR (ARKit), calendars. ✅ I have experience with using Firebase/Appwrite/Supabase/any REST API ✅ I support the release to the Apple and Android stores for my apps. ✅ I have experience in no-code apps based on Flutter such as FlutterFlow --- Looking forward to the interview.
    vsuc_fltilesrefresh_TrophyIcon Android
    Location-Based Service
    Hybrid App Development
    Adobe XD
    SQLite
    React Native
    Firebase
    AWS Amplify
    iOS
    Material Design
    Flutter
    Dart
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How to Hire Top Android Developers

How to hire Android developers

Android is the world’s most popular mobile operating system (OS). Whether you’re trying to create an Android app from scratch, or port an existing iOS app to Android, an Android developer can help bring your mobile project to life.

So how do you find an Android developer? What follows are some tips for finding top Android developers on Upwork.

What is Android development?

Android developers use the Java programming language, the Android SDK, and other tools to develop apps for smartphones, tablets, and other mobile devices running the Android OS.

Here’s a quick overview of the skills you should look for in Android development freelancers:

  • Native app development through the Android SDK
  • Solid grasp of UI/UX design fundamentals
  • APIs such as REST and SOAP
  • Version control systems such as Git
  • Project management systems such as Jira
  • Cross-platform mobile app development frameworks such as React Native

Android development consultants help businesses create powerful mobile apps that can compete in the Google Play Store.

How to shortlist Android development freelancers

As you’re browsing available Android development consultants, it can be helpful to develop a shortlist of the freelancers you may want to interview. You can screen profiles on criteria such as:

  • Expertise. If your app requires expertise in GPU programming, game design, or accelerometer control, you’ll want to find a specialist.
  • Past work. Good code is well documented, some developers showcase their past projects or provide presentations highlighting their achievements on their profiles.
  • Feedback. If you’re wondering what it’s like to work with a particular Android developer, past reviews are a good place to look.

Why do you want to hire Android developers?

The trick to finding top Android developers is to identify your needs. Is this app intended to be used as a secure user account portal? Will the app need to incorporate any unique features, such as scanning documents and reading text? The cost of your project will depend largely on your scope of work, and the specific skills needed to bring your project to life.

How to write an effective Android developer job post

With a clear picture of your ideal Android developer in mind, it’s time to write that job post. Aim to provide enough detail for a freelancer to know if they’re the right fit for the project.

An effective Android developer job post should include:

  • Scope of work: From user chat rooms to user authentication list all the deliverables you’ll need.
  • Project length: Your job post should indicate whether this is a shorter or larger project.
  • Background: Translate your Android developer needs into a candidate profile. If you prefer experience working with certain industries, software, or marketing channels, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Ready to create an Android app that will help you reach your target market on their mobile devices? Log in and post your Android development job on Upwork today.

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