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  • $48 hourly
    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 Kotlin
    Android
    Bluetooth
    Amazon Polly
    MySQL Programming
    Android App Development
    Amazon Cognito
    Amazon S3
    Java
    JavaScript
  • $35 hourly
    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 Kotlin
    Tablet
    HTML
    Android SDK
    React Native
    Flutter
    SQL
    Java
    Android App Development
    CSS
    Mobile UI Design
    Android
  • $15 hourly
    Computer science student with practical experience using Android Studio through internship. Enjoys developing Android apps and designing them. Willing to try the hardest and learn new skills to achieve the desired work.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Golang
    Mobile App Development
    Android App Development
    MySQL
    PostgreSQL
    User Authentication
    Android
    Android Studio
    Firebase
    Java
    SQLite
  • $40 hourly
    Hello I am a senior Full Stack mobile app developer with 6 years coding experiences of Swift, Kotlin, Objective C Java, JavaScript and Php. In the last years, I have built several kinds of mobile apps with Native & Hybrid(React Native) frameworks so that i can provide good suggestions for your project and high quality result. What kind of mobile app are you going to build? with Native or Hybrid? You can build amazing perfect app with me base on your choice. I am always ready for you and hope to build good partnership with you. Regards
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Web Development
    Ruby on Rails
    ASP.NET
    .NET Framework
    Ruby
    iOS Development
    Java
    Android App Development
    C#
    Swift
    Objective-C
    Mobile App Development
    iOS
    React Native
  • $80 hourly
    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 Kotlin
    Mobile App Development
    Android App Development
    iOS Development
    Smartphone
    Java
    Firebase
    Flutter
    Android
    Swift
  • $25 hourly
    I have more than 5 years of experience developing Android applications. I enjoy using and learning modern tech-stack and environments, estimating costs or developing time and providing valuable solutions. My main competences could be summarised as follows: • Android: Native Kotlin/Java (MVVM, LiveData, Coroutines, ViewBinding, Retrofit, Koin, Picasso, Dagger, Jetpack Compose) • Web Frontend: Bootstrap, JQuery, JS, CSS, JSF, PrimeFaces, RichFaces, JSP • Persistance: SQLite, Room, MySQL and NoSQL databases (GraphQL, MongoDB, Firebase Realtime Database) • Testing: JUnit // Mockk • Methodologies: Jira, Agile, SOLID
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Google Play
    HTML
    Model View ViewModel
    Android SDK
    Android App Development
    Firebase
    Java
    Android
  • $27 hourly
    Have 5 years work practice in mobile development My skills overview: - For developing applications I’m using: Java, Kotlin - Best architecture practice as : Clean Architecture, MVP, MVVM, SOLID - Data storage: Firebase, Realm, SQLite, SharedPreferences, Internal/External memory - Sensors, Location and Maps, Geofences - UI design : Understanding and using guidelines, Material Design, Common UI/UX patterns, Using support libraries, Custom (views, layouts) - Firebase : database, authentication, analytics, notifications, remote config - Voip: WebRTC, Janus, Agora Dealing with REST/SOAP API (JSON, GSON, XML), Sockets, using Retrofit2 Creating applications for multiple screen resolutions/sizes
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android SDK
    Smartphone
    Google Ads
    Mobile App Development
    API
    API Integration
    Android Room Persistence
    Android
    Unit Testing
    Firebase
    Java
    Android App Development
    Retrofit
  • $75 hourly
    Hello there, I'm Gaurav ✅ *Mobile development Expert* ✅ *Kotlin/Android, Flutter and React Native* ✅ *Developed and delivered apps with an overall rating of 4.8+ rating. and thousands of downloads* ✅ *Great communicator* ✅ *Adaptable to any time zone* ✅ *Fullstack enthusiast* I have been developing native Android apps for more than 8 years now. I have worked on different stages of mobile development - developing, architecting, and designing apps from scratch, migrating existing apps with the old codebase to use the modern android development approach, and updating popular apps by adding new features to the same in a modular and scalable way. Specialize in: * Creating timely deliverables * Architecture implementation * Third-party library/API integration * Ability to convert mockups to a functional app with attention to detail Skills : Android, Java, Kotlin, MVVM, Android architecture components, Reactive programming (RxJava/RxKotlin), Dependency Injection (Koin), Backend API integration (Retrofit2/Okhttp), Node.js, Express, Mongo, React.js, Php/MySql, Third-party API integration (Twilio, Stripe, Social Apps, etc), Material Design, Git. I am looking forward to working with you. Regards Gaurav Sarma
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    ChatGPT
    Chat & Messaging Software
    A/B Testing
    Flutter
    Android SDK
    Android App Development
    Push Notifications
    Mobile App Development
    Map Integration
    Material Design
    Android Studio
    Android
    Java
    Firebase
  • $17 hourly
    As an enthusiastic and dedicated Android developer, I take pride in crafting innovative and user-friendly mobile applications. With a passion for creating seamless digital experiences, I have honed my skills in Java and Kotlin, harnessing the power of the Android SDK to bring ideas to life. My journey as an Android developer has equipped me with a diverse set of skills, enabling me to tackle various challenges that come my way. Whether it's developing a feature-rich app from scratch or optimizing existing code for peak performance, I always strive for excellence in every aspect of my work. I firmly believe that effective communication and collaboration are key to delivering successful projects. Throughout my career, I've had the pleasure of working with clients from diverse backgrounds, understanding their unique requirements, and translating them into scalable solutions that exceed expectations. My focus on staying up-to-date with the latest industry trends and best practices ensures that I can deliver cutting-edge Android applications that stand out in today's competitive market. I'm not just a developer; I'm a problem solver and a reliable partner in your app development journey. Let's work together to turn your ideas into reality and create Android applications that leave a lasting impact on your users. If you're looking for a skilled Android developer who is passionate about innovation, quality, and client satisfaction, feel free to reach out. I'm excited to be a part of your next project and contribute to your success. Let's build something incredible together!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    RxJava
    Mixpanel
    Core Java
    Database Programming
    Web Service
    Business with 1-9 Employees
    Payment Gateway Integration
    Android
    Android App Development
    Firebase
    Mobile App Development
  • $60 hourly
    ** I am what I am because of what we all are. ** I am a self-motivated, hard-working, and open-source contributor. My GitHub handle is *amsurana* Mobile experience [since 2009] * Worked on Qualcomm, Mediatek, Amlogic, Rockchip based devices. * Porting and Writing Device Drivers * Customizing Android Kernel * Android Automotive OS Expert - Projects and Consulting. Ported Automotive OS to RPI. * Android Firmware development for all kind of Devices [PCBA, Phones, Tablet, TV, Accessories] * Android SDK/NDK * Android Wearable * Custom ROM - I have deep experience in customizing Android and modifying the entire OS experience as per the requirements. Some of the customizations I have done - changing boot animations, modifying shutdown screen, removing bloatware, developing system-level apps, making a tablet a Kiosk (without permissions), Bluetooth stack modification, Carrier config updates, and many more. * Secure OS - Make your Android ultra-secure. * OTA for A/B Seamless or Non-AB devices * Secure Android OS using AVB Tool * MDM, EMM, Mobile Device Management - If you plan to use MDM or develop your MDM, do reach out to me. I have experience in Airwatch, SOTI, ScaleFusion, Gears42, and FieldX. Special Skills: Z-wave, Zigbee, IoT, Amazon Alexa, Google Home Assistant, Smarthome, IFTTT Keywords - Android, Web, Social Media Integration, Java, J2EE, Bluetooth, BlueZ, DBus, AOSP, Custom ROM, Docker, Play Framework, Linux, AWS, EC2, MongoDB, Eclipse, Cyanogen mod, LineageOS Android TV, Android OS, Custom ROM, Tizen, LinegaeOS, RaspberryPi, OrangePi, Khadas VIM, HiKey, Amlogic, Rockchip, Airwatch, SOTI, MDM, EMM, Pentest, Penetration Testing, Qualcomm, Mediatek
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Raspberry Pi
    AOSP
    Mobile Device Management
    Embedded System
    Firmware
    Internet of Things
    Firmware Programming
    Android SDK
    Android NDK
    Android App Development
    Mobile App Development
    Android
    Java
  • $75 hourly
    With 9+ years of experience developing mobile apps that engage millions, from startups to Fortune 100s, I've delivered 50+ successful iOS & Android apps for clients in diverse industries across the USA, Germany, the UK, and Switzerland. · Native App Development: iOS (SwiftUI, Swift, Objective-C), Android (Java, Kotlin) · Cross-platform App Development: Flutter & Dart · Client/server & database/web interfaces: PHP, Node.js, Python, Firebase · UI/UX expertise to craft intuitive experiences Say goodbye to developer churn for seasonal updates or library upgrades. I prioritize building long-term partnerships, not just apps. Let's turn your vision into reality. Please don't hesitate to contact me!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    SwiftUI
    Java
    Flutter Stack
    Node.js
    Android App Development
    Firebase
    iOS Development
    Dart
    Mobile App Development
    Swift
    Flutter
    Android
    iOS
    Mobile App
  • $20 hourly
    🏆 Top Rated Upwork Freelancer 🎯 100% Job Success 🕓 100+ Mobile App success stories ⭐ 5-star reviews from satisfied clients ✅ 100% Job Success Ratio ⭐ My skills and experience, ✅ Native Mobile App Development: Android (Java, Kotlin) ✅ Native Mobile App Development: iOS(Objective-C and Swift) ✅ Hybrid/Cross-platform Mobile Development: React Native, Flutter ✅ Firebase, Azure, AWS ✅ Google Map; Google Service Integration ✅ Web service: XML/JSON, REST/SOAP API with Retrofit or Volley. ✅ Chat; Messaging Engine: XMPP, QuickBlox, OpenTok, Agora ✅ Social Media API Development:- Facebook, Google, Twitter, Apple ✅ Payment Gateway:- Paypal, Paytm, Stripe, Razorpay, and many more. ✅ Node.js, PHP, Javascript, Soket.io ✅ MySql, Sqlite, PL/SQL ✅ Background Services, Real-time Push, Live Tracking, Chatting, Audio-Video call services. ✅ API Development in PHP with a strong security Auth. ✅ Git, SVN, Bitbucket, Gitlab source code versioning ✅ JIRA, Trello, Github for task management Full-Stack Native/Hybrid/Cross-platform Mobile Apps & Web Apps Expert Full-Time Support(40~60 hrs/week), Daily progress report Long-term relationship contract I believe in quality work as well as building long-term relationships with my clients. I prefer to write clean, understandable source code using style guides. Let's begin an awesome project. Thanks!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Testing
    REST API
    Front-End Development
    FlutterFlow
    GraphQL
    Firebase
    Web Application
    Swift
    iOS Development
    Android
    Android App
    Dart
    Flutter
    Mobile App Development
  • $25 hourly
    ★★★★★★★★★★★★★★★★ ★★ ★★ Quality is more important than quantity ★★ Client satisfaction and quality of work is more important ★★ Always provide the best suggestion. ★★ ★★★★★★★★★★★★★★★★ I have 4+ years of experience in developing Android Applications and I am a talented Android Developer with web backend experience. Seeking a challenging role in the IT industry where my technical knowledge, analytical and managerial skills can be put forth for the successful completion of projects. I have worked extensively on Android SDK, Google Android Programming, and Hybrid app Development, working from the project planning up to the end. My core strength is native mobile application development for Android platforms. I have been part of some complex features development with optimized apps developments. My experience includes developing Location-based apps, Live music and video streaming apps, Social Networking Apps, Loyalty Apps, Bar code and QR code reader apps, e-Commerce apps, and in-app purchases. Also, I worked with Google Maps API, Facebook API, YouTube embedded video, etc. Having gained a strong experience in software development and project management area, I can assure you, Robust Performance, Top Speed, High-Quality work, I can work 40+ hours per week. I will do my best effort to provide you the Best Quality Product. I am seeking opportunities to build Android Apps up to the standards and levels of my clients' satisfaction. I work 40+ hours per week. I will do my best effort to deliver you the Quality Product. Thanks, Vikas Sharma 🔋100% 😃 🔋90% 😆 🔋80% 😁 🔋70% 😏 🔋60% 😅 🔋50% 😬 🔋40% 😐 🔋30% 😥 🔋20% 😧 🔋10 % 😫 🔋3% 😱🔌🏃💨💨
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Dagger
    Retrofit
    Mobile App
    Camera
    Google Analytics
    SQLite
    Model View ViewModel
    Firebase
    Native App Development
    Android
    Android App Development
    Android NDK
    Android Studio
    Android SDK
  • $20 hourly
    𝐓𝐞𝐬𝐭𝐢𝐦𝐨𝐧𝐢𝐚𝐥𝐬 𝐟𝐫𝐨𝐦 𝐌𝐲 𝐏𝐫𝐞𝐯𝐢𝐨𝐮𝐬 𝐔𝐩𝐰𝐨𝐫𝐤 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 🏅 "Best developer I’ve ever had. Always there when I need. I’m not a technical person, and she continuously spends so much time explaining what goes into the development process and goes out of her way to teach me the basics. It’s very important to me that I’m learning what my investments are doing every step or the way and the people I work with are making sure that I 100% understand. Will always come back to this developer for future projects!" 🏅"Good communication and hard working." 🏅"good work" I'm an expert in Mobile Apps Development which includes Android App Development, iOS App Development, Mac Desktop Apps, and Web Apps Development, and have completed 350+ successful projects in the last few years. I'm also an expert in #Android, #iOS, #ReactNative, #Flutter, #Vue, #React, #PHP, #Wordpress. Expertise in integrating Standard frameworks and Third-Party libraries with APIs apart from that, I'm familiar with using project management tools like Jira and Trello. Frameworks:- ✓ Native iOS SDK ✓ Native Android SDK ✓ PHP, Core PHP, Laravel, Slim, CodeIgniter, Drupal, Joomla, Magento ******************************************************************************* App Development IDEs:- ✓ iOS programming: XCode, Objective-C/Swift, Cocoa-touch. ✓ Android: Eclipse/Android Studio, Java Fragments/Activities, SDK. ----------------------------------------------------------------------------------- Coding Strategy & Version Controlling:- ✓ Well-optimized, clean, robust code. ✓ Github & Bitbucket On-Demand ---------------------------------------------- API /Web Service Integration:- ✓ JSON And XML Based API ✓ REST & SOAP-Based API ✓ Parse, Parse REST, Amazon, Firebase ✓ VOIP, Cloud Communication: Twilio, Heroku, Tokbox ✓ Cloud services: iCloud, Rackspace, Zoho CRM, Salesforce, Azure, AWS (S3, EC2, RDS, SES, and other AWS services), Dropbox ✓ Online Payment Gateway: Stripe, Braintree, Paypal. -----------------------------------------------------------------  Social Apps ✓ Integrated with popular social networks such as Facebook, Twitter, Snapchat, Instagram API, Pinterest API, etc. ✓ Cloud-based user database. ✓ Private social networks. ✓ Push notifications, Event alerts, etc. ******************************************  Business Apps ✓ Engineering & Automation tools. ✓ Telecom application. ✓ Restaurant Management. ✓ Appointment Booking apps for Small businesses (e.g. Beauty Salon, Car Washing Companies, Spa, etc.). ✓ GPS & Location-based Apps. -----------------------------------------------------------------------  Entertainment & Utility Apps ✓ Wide range of Photo & video Editing apps with cool effects. ✓ Music & Multimedia sharing apps. ✓ Emoji Apps, Scientific Calculators & Converters. ********************************************************************  Map & Location-based applications ✓ Geo-fencing apps. ✓ Geo Tagging & GPS-based apps. ✓ Apple & Google Map-based apps showing Annotations & Events. --------------------------------------------------------------------------  Sports & Fitness apps  Fitness, education applications, etc. ******************************************************************** In-App Payment Solutions ✓ Google In-App Purchase ✓ Third-party Payment Gateway Integration ********************************************************* Third-party back-end support ✓ Firebase ------------------------------------------------------------ Push Notification Support ✓ Firebase Push Notification ✓ Onesignal Push Notification ✓ PushWoosh Push Notification ********************************************************* I'm happy to say almost 100% of my clients are satisfied with my work. Some of the projects I have worked on are very popular and featured in their stores. For example Editing App Galaxy, Selfi-fi, Monsters&Me, marketplace app, school mode Apps, etc. I'm looking forward to hearing from you. Regards, Ramanika.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    React Native
    Application Integration
    Firebase Cloud Firestore
    iOS SDK
    Flutter
    Desktop Application
    ARCore
    Expo.io
    iOS Development
    Apple Xcode
    AWS Lambda
    Mac OS App Development
    Video Editing
  • $70 hourly
    Experienced mobile app and backend developer with 10 years of experience. I've developed multiple frontend and backend applications for clients, and most of my projects are developed in Java and Javascript. Please take a look at my portfolio. I'd be happy to work with you! Thanks, Adrian
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Scripting
    Enterprise Software
    API Development
    Customer Relationship Management
    Linux
    Bash
    Mobile App Development
    Python
    Java
    React Native
    Android App Development
  • $40 hourly
    I have a passion for taking the web and making it mobile. Over last 10 years I got mobile development experience in a broad range of industries, including social gaming, education, sports entertainment, dating, restaurant management and rental solutions. I have solid understanding of full mobile and software development life cycles, UIX, web analytics, changing web standards, and Agile methodologies. Dedicated to continuously developing, implementing, and adopting new technologies to maximize development efficiency and produce innovative applications.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Google Maps API
    CSS
    Git
    SQL
    GPS
    Android SDK
    Smartphone
    Android App Development
    Android
    Java
    User Authentication
  • $25 hourly
    ⭐️ 100% Job Success ⭐️ My name is Jay. I believe my strong points are my creativity and punctuality. My main goal is always to meet your needs and deadlines. As a responsible person, skilled, ambitious, and professional developer, I would like to use all my knowledge, experience, and strong technical background to help you bring your ideas to iOS Platforms. I know what it is and know how to work hard, learn quickly and be a part of a team if needed. I have 8+ experience in the following languages, platforms, and Architectures: Languages: • Swift - Expert • Objective-C - Expert • SwiftUI - Intermediate Platforms: • iOS • iPadOS • WatchOS • TvOS Architectures: • VIPER • MVVM • MVC Thank you in advance for your time and consideration. I look forward to working with you soon.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    iPadOS
    Swift
    QR & Barcode Scanner
    Android App Development
    Core Data
    iOS Development
    iOS
    Tablet
    Responsive Design
    Firebase
    Native App Development
    Redux
    Chat & Messaging Software
    React Native
    Mobile App Development
    API Development
    Social Media Account Integration
  • $50 hourly
    Creation and support of mobile applications. Created over 10 apps with over 5,000,000 installations.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    App Store
    SwiftUI
    Invoicing
    Google Play
    Analytics
    Google Ads
    Mobile App Development
    Swift
    iOS Development
    Android App Development
    RESTful Architecture
    Java
    Firebase
    Map Integration
  • $60 hourly
    Fundamentals: Experienced Android Developer 20+ released projects 7+ years of Android development experience English: Fluent I've been developing high-quality mobile apps for more than 7 years now. I've been working on a broad variety of projects: mobile banking apps, mobile clients for enterprise systems, educational and entertaining apps, b2b and b2c projects. I've worked with applications requiring different technologies and skills. I especially want to note the experience of fixing errors made by previous developers.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    RESTful Architecture
    In-App Purchases
    Mobile App Development
    Android NDK
    Google Maps API
    Material Design
    Firebase
    Mobile UI Design
    Websockets
    Android SDK
    Android App Development
    GraphQL
    SQLite
    Java
  • $35 hourly
    Android Developer from Ukraine (UTC+2), with 10+ years of experience in designing and implementing Android applications. Deep expertise in Kotlin and Java for Android and Material Design Guidelines, skilled in mobile UI development, experienced with version controls such as Git, have great analytical and problem-solving skills. Android Jetpack; AndroidX; MVVM; MVP; MVI; MVC; Android Jetpack; AndroidX; MVVM; MVP; MVI; MVC; Company HR - please do not disturb.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android Room Persistence
    Model View ViewModel
    JSON
    SQL
    Git
    Android SDK
    Android App Development
    Tablet
    Retrofit
    Firebase
    Android
    Gradle
    Java
    Native App Development
  • $40 hourly
    I am a mobile developer that focuses on native Android development and the React Native cross-platform framework. I have a passion for design and user experiences, accessibility, test-driven development, functional programming, and app architecture. I am keen on serverless technologies like AWS and Google Cloud. I have worked with startups and large corporate teams. I understand Kanban and Scrum Agile methodologies. I have worked remotely for a long time so I understand the importance of good communication.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Mobile App Development
    Android SDK
    Android
    Java
    In-App Purchases
    TypeScript
    Node.js
    Native App Development
    JavaScript
    React
    Android App Development
    React Native
  • $35 hourly
    Over the span of 11 years, I've immersed myself in the realm of native Android application development, culminating in a diverse portfolio that encompasses an array of dynamic projects. This includes the creation of highly secure and encrypted communication platforms (OTTs), innovative social networks, robust cryptocurrency exchanges, efficient system utilities, intuitive online stores, intelligent smart assistants, and a wide spectrum of other application categories. At the core of my skill set is the art of crafting resilient and high-performance Android applications that seamlessly traverse the landscape of various devices – from smartphones to tablets – all while optimizing CPU and memory resources. My expertise extends beyond coding; I possess extensive experience in architecting efficient team workflows, along with a keen eye for conducting meticulous code reviews, ensuring the delivery of exceptional projects. My hands-on proficiency involves constructing formidable codebases using the MVP/MVVM architecture, employing languages such as Java and Kotlin, and harnessing the power of Gradle. This proficiency is underscored by a deep-seated understanding of essential object-oriented programming concepts, a rich repertoire of software design patterns (including Singleton, Observer, Factory, and Decorator), comprehensive testing methodologies (spanning Unit, Integration, and Automated UI tests), and a spectrum of cutting-edge technologies that have been embraced by the Android development community. As I embrace new horizons, I am actively seeking opportunities not only to engineer and deliver top-tier applications but also to offer innovative solutions that can fuel the growth of your business. I invite you to connect with me, and let's collaboratively shape the trajectory of your applications and business endeavors.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Performance Optimization
    Model View Presenter
    Object-Oriented Programming
    Android SDK
    Android App Development
    Gradle
    Android Studio
    Chat & Messaging Software
    API Integration
    SQLite
    Android
    Java
    Native App Development
  • $20 hourly
    🧑‍💻I am an Android developer with a wide variety of experiences to help bring your idea to reality. My goal is to build a fully functional solution that meets all demands while maintaining scalable and clean code. Working with simple apps as well as more complex projects in the past, I can easily adjust to any scale of work and bring you the best possible result. 📃Communication is a top priority, so expect regular progress updates and engagement in your plans about the project. Together we can shape the ideas and discuss different implementations for a specific problem. We can find an answer to any question you have, and projects will always be on time. My skill set includes: • Native Android Development • Android SDK • Java, Kotlin, Python, C# • HTML, CSS, JavaScript • Firebase utilization • Working with different API-s • Git With previous projects, I have used many different third-party solutions that can help in achieving your idea. I am always willing to learn new things, so no plan is off the table. Hope to hear from you so we can create something great together!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    C#
    Java
    Python
    Android
    Smartphone
    Android App Development
    Mobile App Development
    Firebase
    Native App Development
  • $80 hourly
    I am a passionate software developer with a wide variety of different experience to help bring your idea to reality. I primarily focus in mobile app development, web design, UI/UX and custom software applications. I work with Swift, Kotlin, Javascript, Python, Node.js, PHP, SQL, HTML, CSS and currently growing in .NET, C#, as well as Angular. I work on projects of all sizes and would love to start on yours next. Let's build something great together!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    iPhone UI Design
    Graphic Design
    iOS Development
    Web Design
    WordPress
    Node.js
    Swift
    Python
    Android
    JavaScript
    Firebase
  • $25 hourly
    🔥 About Me: ⠀⠀✔ Experience: more than 7 years in mobile development. ⠀⠀✔ Technological stack: Java, Kotlin, Android SDK, MVVM, Android Studio, Firebase, RxJava2, Coroutines, Retrofit2, Firebase, Git, Jira. ⠀⠀✔ Experience in Databases: SQLite, Room. ⠀⠀✔ Experience in Custom Android devices development, such as Zebra devices. ⠀⠀✔ Area of expertise: Healthcare, E-commerce, FinTech, Logistics, Car Rent, Social Networks. ⠀⠀✔ Development for me is a challenge where I am capable of creating complex projects and find the best solutions.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android Studio
    Git
    Java
    Model View ViewModel
    Android App Development
    Android SDK
    Smartphone
    RxJava
    Dagger 2
    Model View Presenter
    Native App Development
    Android Room Persistence
    Camera
    API Integration
  • $30 hourly
    I am Osemwingie Oshodin, I am a value driven mobile engineer. I am proficient in Kotlin, Kotlin multiplatform, android architecture, Jetpack libraries, backend development using Ktor, and building cross-platform applications using Flutter I have successfully deployed multiple mobile applications built from scratch to the google play store. I have also contributed to many projects by working in a team. I have gone on to further my skills in software engineering by taking relevant courses and acquiring a google associate developer certificate. 
I am excited about learning new technologies. My utmost priority is to satisfy my clients by delivering optimal products that satisfy the expectation of the end-users. In my free time, I like to watch sports and listen to music.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Flutter
    Java
    Android App Development
    JetPack
    Model View ViewModel
    Android
  • $18 hourly
    Hii, I am working on high-quality iOS/Android applications for different industries, including medicine, marketing, advertisement, etc as a developer. I have overall 6 years of experience. It's important to me to create supportable and upgradable applications. I prefer to build long-term relations with my customers. When they come back to add support for new mobile devices or new features - I am always glad to see that application continue its life. My Skill Set: ------------------- - Flutter, Dart - Swift, Xcode, iOS SDK - Java, Kotlin, Android Studio - Super Level UI Customization, Suggestion of Best User-Friendly and elegant UI/Graphic design - Google Map Service, Real-time tracking, Geo-location, GPS, Geo-fencing - Web services, REST/SOAP, XML/JSON Domains on which i developed apps ------------------------------------------------- On-Demand Marketplace Utility Social networking/Chat/messaging Mini-games E-commerce Bluetooth/beacons Taxi/booking Fitness/health Coding Strategy: ------------------------- *Well-optimized, clean, robust, and well-commented code with qualified naming conventions. * Multi-Language Support * Localization And Internationalization support * API /Web Service Integration Thanks!
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    RESTful API
    Apple Xcode
    Android App Development
    iOS Development
    Firebase
    Java
    PHP
    Firebase Realtime Database
    Swift
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