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Rating is 4.6 out of 5.
4.6/5
based on 2,602 client reviews
  • $25 hourly
    ๐Ÿ† Achievement: Upwork JavaScript Certification โญโญโญโญโญ I am a full-stack developer with 11+ years experience in web application, mobile application and desktop application development. I am motivated and enthusiastic by new challenges and tasks and take excellent approach to achieve success. I like to keep myself up to date with the latest technologies and put my skills into practice, adapting quickly to new technologies and applying them in my work. Regularly refresh my skills to ensure I keep up with ongoing developments. Technology Stacks: - ReactJS - React Native - AnglarJS, Angluar 2+ - Ionic Framework (1, 2, 4, 5+), - Cordova Plugins, Capacitor Plugins - NodeJS - AWS (Serverless, API Gateway, Lambda, SNS / SQS / SES, Cognito, CloudFormation, ....) - Google Cloud Platform, Firebase - .Net Framework - ...
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    Apache Cordova
    Amazon API Gateway
    API
    Ionic Framework
    React Native
    Firebase
    Unit Testing
    Mobile App Development
    AWS Lambda
    Web Application
    AngularJS
    React
    Node.js
    JavaScript
    Angular
  • $35 hourly
    ๐Ÿ† TOP RATED PLUS๐Ÿ† in FLUTTER DEVELOPMENT "So it will be!" - that's how I like to say to my clients every time they ask me if I can get the work done on time, never fails. Hi there, thank you for checking out my profile, my name is Huy, I am a Mobile developer in Viet Nam, if you are looking for someone to respond fast, learn and adapt fast, and have good communication. Look no further!. As a self-learner and a technology enthusiast, I always offer the best quality apps to my clients, using the below skills: โœ… Flutter, dart, BLoC, Provider, Riverpod โœ… Beacon/Bluetooth/sensor connect โœ… AWS Appsync Graphql, Graphql apollo API, REST. โœ… Amazon Amplify, Firebase (authentication, database, analytics, notifications and etc.) โœ… SDK (Maps, Ads, Youtube, In-app Billing, Telematic SDK and etc.) โœ… Online payments (Stripe, Revenue Cat) โœ… Social Media integration (Facebook, Twitter, Instagram, G+, Youtube) โœ… App marketing and ads integration (Google Ads, App Flyers, UX Cam) โœ… Fully automated deployment pipeline (bitrise.io, Fastlane, Azure devops, github action) I may not be one of the best Flutter developers on the market yet, but my communication skill is top-notch. I will always be the developer that always asks the right question before work and offers the right solutions, and is 100% transparent about my work. I am interested in both tech and business development. I am only available for 6-month+ projects, my focus is to support potential business.
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    Desktop Application
    CI/CD
    Bluetooth Beacon
    Amazon Cognito
    AWS AppSync
    AWS CodePipeline
    Dart
    Mobile App Development
    Firebase
    GraphQL
    Flutter
  • $135 hourly
    As a top 1% expert vetted mobile application developer with decades of experience, I specialize in creating successful mobile applications for iPhone, iPad, Apple Watch, and Apple TV, with a proven track record of international publishing success. Over the past eight years on Upwork, I've amassed hundreds of clients, all of whom have awarded me 5-star reviews. Investing in a developer can be daunting, especially when you're unsure of how to evaluate their skills. I understand the stakes, having witnessed and rectified the fallout from poor talent selection in my roles within organizations. This firsthand experience has honed my abilities not just in software engineering, but also in business, enabling me to tackle and resolve issues effectively. Here's why I stand out from other developers you may be considering: - Over a decade of experience developing and publishing iOS mobile apps - Senior technology leadership at major companies such as Activision Blizzard - Extensive experience in budgeting, marketing, sales, and communication - A proven track record of completing projects successfully, without ego or drama - Sole developer on projects, ensuring a focused and personalized approach - PMP certified with a track record of managing projects into the seven-figures I provide expert development for iPhone, iPad, Apple Watch, and Apple TV using Swift, SwiftUI, and Objective C. I've launched my own apps that have achieved Top 500 status, and have worked with individuals and large companies alike, from MVPs to apps with tens of millions of users. Here's how I can assist you: - Develop an app from ideation to MVP and beyond - Revive, update, or fix existing applications - Integrate new or existing applications with back-ends like Firebase or AWS - Implement AI features, such as through ChatGPT, for text, images, and more - Bring stalled app development efforts to completion - Provide guidance on feature possibilities, App Store guidelines, and monetization strategies Honesty, professionalism, communication, and care are my guiding principles. While achieving success is paramount, how we achieve it matters just as much. I am passionate about development, problem-solving, and bringing your vision to life. Please take a moment to read the testimonials from my clients, and feel free to reach out to discuss your project further. Thank you for considering me, especially among the many others you've likely reviewed. I look forward to the opportunity to help you succeed!
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    ChatGPT
    Firebase
    Swift
    Apple HealthKit
    Native App Development
    Apple Watch Application
    tvOS
    Apple TV Application
    Apple Watch
    Mobile App Development
    iPad App Development
    iOS
    iOS Development
    iPadOS
  • $40 hourly
    ChatGPT API Flutter web Firebase Functions Cloud Firestore, Push Notifications Firebase Authentication, Analytics, Crashlytics, AdMob, Dynamic Links, Remote Config OpenAI API IMAP, SMTP === Flutter major skills and experiences === Flutter UI(layouts), Firebase, Bloc, Provider, Localizations, Animation, Notification, Unit/Widget/Integration/e2e tests, CI/CD with GitHub Action, Hive, Encrypt, Sentry, AppsFlyer, EasyLocalization Libs: Realm, Realm Cloud, Twilio SDK, Stripe, Mapbox, AirWatch SDK Apps: Finance, Fitness, Delivery, Bitcoin, E-commerce(WooCommerce), E-learn, Social network(Vide/Audio calls and text messages) apps === Android major skills and experiences === Tools: java, kotlin, Android SDK, Android Studio IDE, Git, Jira, Redmine, Slack MVP, MVVM, LiveData, Room, SQLite, DataBinding, ViewModel, Retrofit, RxJava, Firebase (Crashlytics), Push-notification (GCM, FCM, etc. ), Hilt, Dagger, unit and instrumental tests === iOS major skills and experiences === Tools: Swift, obj-c, Xcode, TestFlight SwiftUI, MVC, VIPER, Firebase(Crashlytics), AFNetworking, CoreData, Push-notification, SDWebImage
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    Apple Xcode
    Flutter
    Android App Development
    Firebase
    Swift
    Firebase Cloud Firestore
    In-App Purchases
    Dart
    iOS Development
    Android
    Kotlin
    Mobile App Development
    Hybrid App Development
  • $75 hourly
    Experienced iOS/Android Developer in Swift / Java who has successfully delivered several apps to the App Store (Apple and Google Play Store) on time and on budget. I am familiar with most of popular design patterns (MVC, MVVM). I have vast experience working w/ Social networking apps, Location/Map based apps, Fitness apps, Food ordering apps, Mobile games, ARKit, CoreLocation, Alamofire, as well as several other popular 3rd party SDKs. As a reliable Top-Rated Plus developer with over 8 years of experience, Iโ€™m committed to the highest industry standards in all the work I do. I also pride myself on possessing a high level of professionalism, maintaining excellent communication, meeting and exceeding client expectations, and providing solutions for problem-solving in a timely manner. I come highly recommended from all my previous clients and hope that I can continue to do so if you choose to hire me for your project. Got an idea for the next big thing? Have you been dreaming about creating your own application? If you have wireframes and need to turn them into a functional application or perhaps just a notebook with drawings of your designs, I can assist you in turning that creativity into a polished and published application for both Android and iOS platforms.
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    Shopify
    Web Development
    AR Application
    App Development
    JSON
    Chat & Messaging Software
    Android
    ARCore
    Java
    MySQL
    Swift
    Native App Development
  • $60 hourly
    I am a full stack developer, entrepreneur and a product evangelist with Bachelors of Technology in Information Technology from Delhi Technological University and 4+ years of web application development and 1 year of mobile development experience. I have an experience of web application development with LAMP stack(Linux, Apache, MySql and Php) using Silex micro-framework and MERN stack(MongoDb, ExpressJS, React and NodeJs). I also have an experience with other web technologies like AJAX, Redux, HTML, CSS, XML, Wordpress, Bootstrap, Materializecss. I am experienced in mobile application development with Ionic Framework and React Native. I have 3 mobile applications published on Play Store and Apple App store. So far, I have developed over 20+ websites, 8 Web Apps, 18 Mobile Apps(iOS + Android), 2 Google Chrome Extension and 1 Wordpress extension.
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    API Development
    Redux
    iOS Development
    Mobile App Development
    Android App Development
    Node.js
    API Integration
    React
    JavaScript
    GraphQL
    MongoDB
    React Native
    Firebase
  • $70 hourly
    I build web apps on React as well as iOS apps with Swift. Need a website (or web app) and a native iOS app? No problem! I love Swift and SwiftUI! Started my professional path as an iOS Dev and still making progress in this area by bringing more great ideas to life. My app Timerange currently has more than 40 000 users around the globe and a new app Courset is getting more and more attention. Iโ€™m currently doubling down on SwiftUI, writing all my latest apps using this framework, and I also inject SwiftUI into my older UIKit based projects. I also have good experience (5+ years) of writing efficient web apps on React, as well as complex websites on Next.js. I have a sense of good UX and UI, so I approach every mock-up very thoroughly.
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    In-App Purchases
    Camera
    SiriKit
    iOS Development
    XCTest
    iOS
    Apple Xcode
    Firebase
    Alamofire
    Encryption
    UIKit
    Swift
    iOS SDK
  • $60 hourly
    Hello, I am Samuel an Upwork Top Rated Plus iOS (Swift, SwiftUI, Objective-C) & React Native developer from the UK. My specialities are - - developing Apple apps - iPhone, iPad, Apple Watch, Apple TV - apps for connected devices - BLE/Bluetooth/Wi-FI/Network connected e.g. health, fitness, audio devices - cross platform (Android and iOS) React Native apps including cross platform BLE/Bluetooth apps - health and fitness apps (including using Apple HealthKit) - widgets (home and lock screen) - upgrading the React-native version on older projects I aspire to the highest standards on each release. I have worked for and with blue chip companies including Bose, Corsair, Musclegun, SC Johnson, Glade, PWC, Vision Cruise, California Fresh Scent, RHA, Phlex Swim, Parqio, Stance Fitness, Huckleberry, Visual Accoustic, Bunafr, Neutrally, Infinite Touch, Mellow and Simple Audio ensuring that their visions are implemented. I have extensive experience in SwiftUI, Swift, Objective C and React Native. I have an excellent knowledge of the music streaming services, the audio industry, wellness, health and research having worked in these industries providing applications that exceeded expectations. With having worked on both large scale multinational and more bespoke apps I have a variety of experience. Project management is a key skill and I can use tools to ensure value is gained and projects are on track.
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    Bluetooth
    Mixpanel
    Intercom
    iOS Development
    Firebase
    React Native
    iOS
    Connected Device
    Core Bluetooth
    ResearchKit
    Apple Watch
    HealthKit
    iPad App Development
  • $20 hourly
    I'm a professional Mobile Application Developer. I have experience of 5+ years in mobile app development and have excellent knowledge & skills in Android, iOS ,Flutter & Ionic platforms. My experience as a senior developer includes working with mobile applications by integrating them with different platforms using an assortment of protocols makes me perfect for your job. I have been involved in the entire lifecycle of mobile app development. I have experience working with Java & Kotlin for Android development, Objective-C & Swift for iOS development and HTML, CSS, Angular for Ionic development. Also, I have extensive knowledge of material design and graphics to ensure excellent performance and a great user experience with modern designs. I've developed apps from simple MVP to complex e-commerce apps, social apps, low energy bluetooth communication apps, location based or traveling apps. I am available for full time work & support and also available on-demand support if needed urgently.
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    Google Maps API
    Android SDK
    Android
    Firebase Cloud Firestore
    Android App Development
    In-App Purchases
    Retrofit
    Flutter
    iOS Development
    MySQL
    Dart
    Java
    PHP
    Hybrid App Development
  • $20 hourly
    ๐Ÿฆ– 10+ years of experience ๐Ÿ“ฑ iOS | Swift | SwiftUI | Objective C ๐Ÿ–ฅ๏ธ macOS | watchOS | tvOS ๐Ÿš€ AI | ChatGPT | ๐Ÿง‘๐Ÿปโ€๐Ÿ’ป Python | Javascript | AWS ๐Ÿ’ป Firebase | ๐ŸŒŸ Top-Rated Upwork Professional ๐ŸŒŸ Are you in search of a seasoned expert to elevate your iOS, iPhone, or MacOS development projects to new heights? Look no further! ๐Ÿ”น Over 10 Years of Mastery ๐Ÿ”น 50+ Mobile Apps Successfully Crafted ๐Ÿ”น 2100+ Hours of Top-Quality Work on 30+ Projects With over nine years of immersive experience, I am your go-to specialist in iOS, iPhone, and MacOS development, driven by a passion for crafting exceptional digital experiences. I thrive in SCRUM/Agile environments, delivering outstanding results that speak for themselves. **My Areas of Excellence:** - ๐ŸŒ Location Tracking - ๐Ÿ“ฑ Social Media/Dating Apps with Video and Audio Chat Features - ๐ŸŽฅ Video and Audio Player Applications - ๐Ÿ’ฐ Financial Apps - โœˆ๏ธ Airline Apps - ๐Ÿฆ Banking Apps - ๐Ÿ“ž Calling Apps - ๐Ÿ“ถ VOIP Apps - ๐ŸŒŸ Augmented Reality Applications **My Mobile Development Skills:** - SwiftUI, Swift, Objective-C, MVVM, MVP, MVC - Design Patterns, Custom Controls, REST API - iOS, iPhone, and macOS development - Material Design and Mobile UI/UX - Firebase Integration (AdMob, Analytics, A/B Testing, etc.) - Firebase Realtime Database and Storage - XCode, Open Source Tools, Support Libraries - Push Notifications (Silent, Custom, VOIP) - Database Management: SQLite, CoreData - Network Handling: Alamofire, AFNetworking, URLConnection - UI Development with Picasso and Glide - Tools like Crashlytics, Firebase, Fabric, LeakCanary, Timber - SocketIO and SignalR expertise - SwiftLint and SonarQube for Code Quality - SIP Calls, XCFramework, CocoaPods, OneSignal Library - Biometric Authentication, OpenAI & ChatGPT API - Linphone for iOS, iPhone, and Android - Sinch API, Augmented Reality (ARKit), Parental Control & ScreenTime API - AirPlay, Picture-in-Picture - CometChat SDK proficiency **Library Development and Management:** - iOS, iPhone SDKs - Custom Library Development - Publication of Libraries and SDKs - Uploading SDKs to Package Managers and CocoaPods **Automotive Unit and UI Testing:** - Unit Testing, Integration Testing, and UI Testing - Tools like Espresso, JUnit, Mockito, Robolectric **API Integration:** - Beacons, Calendar API, QR Code, OCR - Contacts API, Geolocation API, Maps Embed API - Apple Pay, Street View, YouTube Live Streaming API - In-App Purchases with Braintree - GPS, Google Maps, Custom Markers, Foursquare, MapBox - Push Notifications (Firebase Cloud Messaging, OneSignal) - Social Media APIs (Google, Facebook, Twitter, Instagram, LinkedIn, YouTube) - Video Chat (WebRTC, Twilio, Audio Streaming, LinPhone, JitsiMeetSDK, Agora, ZegoCloud, Vonage) - Custom Calendar, Media Gallery, Background Download/Upload - WireShark, CharlesProxy - Deep Linking, Memory Leak Detection (Zombies and Profiles) I am fluent in English and ready to take your iOS, iPhone, and MacOS development projects to the next level. Don't hesitate to get in touch, and let's create something remarkable together!
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    Google Maps API
    Objective-C
    VoIP
    In-App Purchases
    Socket.io
    Firebase
    Map Integration
    Chat & Messaging Software
    Swift
    Mac OS App Development
    macOS
    iPhone
    iOS
    iOS Development
  • $20 hourly
    โ˜‘๏ธI am a professional Full-Stack Developer โ˜‘๏ธ With experience in Parse Server and Firebase, I can build the Back-End as well. โ˜‘๏ธIโ€™m experienced in successfully implementing projects from initial sketches to a final app that is live. My recent technology stack: โœ… Languages: Flutter, Flutter-Flow, Dart, Ionic, Angular โœ… Databases: Firebase, Firestore, PostgreSQL, MySQL, MongoDB โœ… Server: AWS, Nginx โœ… Frameworks/Libraries: React JS, jQuery โœ… Version Control: Git, GitHub, GitLab, Bitbucket โœ… Others: Docker, Bash/Shell scripts, SSH, Digital Ocean, AWS (EC2) ๐Ÿ†I have developed iOS and Android applications for various industries like:๐Ÿ† ๐Ÿ† On-Demand app ๐Ÿ† Food Ordering App ๐Ÿ† Taxi Booking App ๐Ÿ† Social App ๐Ÿ† Dating Application ๐Ÿ† Finance App ๐Ÿ† Health and Fitness App โ›ณAreas of Expertise: โ›ณ Flutter & Ionic (Cross-Platform) โ›ณ Java & Kotlin (Android Native) If you have a project or just an idea I would like to have an opportunity to discuss and enhance the idea to make it more clear & a better version for your business or startup Mobile App. I'm open to both hourly and fixed costs, please feel free to connect and talk about your project. I am seeking opportunities to build Mobile Apps up to the standards and levels of my client's satisfaction. I work 40+ hours per week. I will do my best effort to deliver you the Quality Product.
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    In-App Advertising
    Location-Based Service
    Android
    iOS
    Kotlin
    Flask
    Django
    PyQt
    Flutter
    Python
    Hybrid App Development
    Native App Development
  • $25 hourly
    โœ… TOP RATED PLUS FREELANCER - UPWORK TOP 3% โœ… Upwork 100 % Job success score โœ… React Native Expert (Cross Platform) Iโ€™m a mobile app & backend developer focused on the development of cross-platform iOS & Android applications using React Native and also working with NodeJS & MongoDB as backend development. Able to deal with full-cycle projects from rapid prototyping to delivering to stores. Familiar with the frontend React ecosystem, I can help to create exemplary architecture for the mobile type of projects. Iโ€™ve used these tools/technologies while working on React Native projects: - Expo API/tools for rapid prototyping; - Redux / Redux-Persist / Redux-Thunk / Redux-Saga as state containers - Firebase as BaaS when there is no dedicated backend used - Realm / SQL-Lite / Async as local storage - React Navigation 5.0 / React Native Router Flux as navigation solutions - Animated / Reanimated / React Native Gesture Handler for juicy animations/interactions - Sentry for catching/analyzing production bugs - ESLint / Prettier / Husky for maintaining code Iโ€™ve used these tools/technologies while working on NodeJS projects: - Node.js / Express.js / Hapi / Mongoose / Loopback / OAuth I'm able to work as a single developer and as a team player and used following collaboration tools: GitHub / GitLab / Jira / Trello / Slack / Zeplin / Invision / Figma
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    JavaScript
    React Native
    MongoDB
    Android
    Node.js
    iOS
    Redux Thunk
    Chat & Messaging Software
    Redux
  • $20 hourly
    - Expert iOS and Android app developer - Over 5+ years of programming experience - Native iOS and Android SDKs - Expert in Ad monetization and social media integration(Facebook, Instagram, Twitter) - 100% Job Success rate and client satisfaction - Proficient in English and client communication
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    Android SDK
    Android App Development
    iOS Development
  • $30 hourly
    ๐Ÿ†.Top Rated Plus - Top 1% of talent on Upwork ๐Ÿฅ‡ Worked with Fortune 50 companies โœ… 2500+ hours on Upwork โœ… Flutter Expert with 7+ years of experience โœ… Expert Developer For Frontend & Backend both + Andriod & IOS both I Am Senior Full Stack Mobile App Developer Having 7+ Years Experience (Android App, iOS App or Hybrid App) For Your Mobile App Development (Android App Developer, IOS, Iphone App) Requirements. I Can Develop Android And IOS App With High Standards With Great Quality in Mobile App Development. I can develop complete application Frontend and Backend single handedly. My Services: Android App Development. IOS App Development. Mobile App Development. Hybrid App Development . Mobile Application Developer For All Yours Mobile App Needs. Why Me. Developed many apps so far. Strong technical skills, Have 7+ years of experience 99% Satisfaction to Clients. High Quality Delivery. Effective Communication through out the mobile app development. Note: Kindly message me before ordering to avoid cancellation. Thank You!!
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    AWS AppSync
    API
    Android App
    API Development
    Node.js
    PHP
    API Integration
    iOS Development
    App Development
    Firebase
    Hybrid App
    Back-End Development
    Front-End Development
    Dart
    Flutter
  • $40 hourly
    ๐Ÿฅ‡๐Ÿ’ธHIGHEST EARNING Flutter Freelancer on Upwork ๐Ÿฅ‡๐Ÿ’ชTop Rated Plus (Top 1% of all freelancers) I have worked with โญโญโญHigh Profile Clients/Organizationsโญโญโญ in my Career Top 2 reasons NOT to hire me: ๐Ÿ“ You don't want your startup to get a swiss-knife problem solver ๐Ÿ“ You don't want to make a call
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    GPS
    Geolocation
    XAML
    Georeferencing
    Google Play
    App Marketplace
    Flutter
    API Integration
    Chat & Messaging Software
    SQLite
    Location-Based Service
    Xamarin
    Firebase
    Camera
  • $50 hourly
    โœ… 100% Job Success, Top Rated โœ… Delivering great native Android apps since 2012 โœ… Delivering great iOS apps since 2015 โœ… Delivering great Cross Platform apps (both Flutter & React Native) since 2017 A highly experienced mobile developer skilled in iOS (Swift/Obj-C) and Android (Kotlin/Java). A fan of the MVVM pattern and reactive programming. Perfectly dealing with Agile methodology, TDD, Sketch, Figma, Git. Have a strong background in application development (since 2009). Areas of Expertise: โ€ข Programming languages: โ€ขโ€ข Kotlin, Java โ€ขโ€ข Swift, Objective-C (Intermediate) โ€ขโ€ข Flutter, Dart โ€ขโ€ข React Native, Typescript, Javascript โ€ขโ€ข watchOS, tvOS โ€ข Cloud services: โ€ขโ€ข Firebase, iCloud, Mixpanel, Crashlytics, Urban Airship, Flurry, AWS, Dropbox โ€ข Frameworks: โ€ขโ€ข Jetpack, Google Services, RxJava, Coroutine, Flow โ€ขโ€ข SwiftUI, CoreLocation, StoreKit, RestKit, ReactiveCocoa, RxSwift, Alamofire, Combine โ€ขโ€ข Google Maps โ€ข Databases: โ€ขโ€ข Room, CoreData, SQLite, MySQL, PostgreSQL, Realm โ€ข Payment processing: โ€ขโ€ข Google Play Billing, In-App Purchase, Stripe, Braintree โ€ข CI/CD & Testing: โ€ขโ€ข Bitrise, Jenkins, Gitlab โ€ขโ€ข Junit, Espresso, Quick, Nimble, XCUITest, Slather, Jacoco โ€ขโ€ข Codacy for test coverage reporting โ€ข Other: โ€ขโ€ข Patterns: MVVM, MVP, Coordinator โ€ขโ€ข Game Dev: Phaser, SpriteKit, Cocos2d, box2D, ARKit โ€ขโ€ข Social networks integration: Facebook, Twitter, Instagram, Sign In With Apple, Google Sign In
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    Mac OS App Development
    Apple Xcode
    iOS Development
    Android App Development
    Kotlin
    Java
    JUnit
    Ruby
    Swift
    Node.js
  • $60 hourly
    Welcome to my profile! My name is Seraphim, I'm an iOS Developer with 9+ years of experience. โœ… I'm making pixel-perfect apps with good code style and bugs-free. โœ… Full cycle of mobile app development - from idea to AppStore. โœ… Developed more than 20 iOS applications. โœ… Experienced with all Appleโ€™s operating systems development: iOS, iPadOS, MacOS, WatchOS My experience includes most of the iOS Frameworks and technologies. My absolute favourites are SwiftUI and Combine. I'm a result-driven developer and a huge fan of my craft. Looking forward to your exciting projects of any complexity! Best regards, Seraphim
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    iPhone & iPad Apps
    RESTful API
    iPad App Development
    Mac OS App Development
    macOS
    Apple Xcode
    UIKit
    Mobile App Development
    Firebase
    StoreKit
    Core Data
    watchOS
    iOS Development
    Swift
    iOS
  • $125 hourly
    As a successful digital software product entrepreneur I employ an advanced software development life cycle specializing in custom end to end enterprise software application development with machine learning, PWA SaaS web portals and complex Salesforce CRM application customizations with high performing data integrations. Contact me to work with a technology partner that is as driven for excellence as you are. Tech Stack Utilized: React.js, Django, Python, Vue.js , Javascript, C#, .NET, C++, CSS, SQL, React Native, Node.js, PostgreSQL, Salesforce Apex and Visualforce etc. Previous and Current Clients: * Charles Schwab * Kellogg's * JPMorgan Chase & Co. * Coca Cola * Experian * Confidential Fortune 500 Financial Services Company * Safelite AutoGlass * Allstate Insurance * State Farm Insurance * Various High Growth Internet Start-ups and Established Small to Medium Sized Companies Education: Master of Science, Management Information Systems - Arizona State University Computer Science and Software Engineering - Arizona State University Ira A. Fulton School of Engineering Bachelor, Economics, Concentration Econometrics - The Ohio State University Certification: ISACA Certified Information Security Manager (CISM)
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    ChatGPT
    Artificial Intelligence
    Enterprise Software
    Progressive Web App
    Data Visualization
    UX & UI
    Mobile App
    Usability Testing
    SaaS
    User Interface Design
    Vue.js
    React
    Node.js
    Machine Learning
    Python
  • $15 hourly
    I am a Sr .Net Core and Mobile Apps Developer (.Net, C#, Xamarin, Flutter) having 12+ years of experience in Web and Mobile development. I am associated with Brain Technosys Pvt. Ltd., an 18+ years old well-established company with ISO Certification, Microsoft Silver Partner & Nasscom Member. We have more than 33,000 man-hrs of experience and have successfully executed 3000+ Web & Mobile Apps Jobs. Technical Exposure: Microsoft Technologies: ASP.NET Core, Net, Azure DevOps, Visual Studio, C#, Blazor, Razor Pages, MS Dynamics CRM, Silverlight and Microsoft Office Live, SQL Reporting, Microsoft Azure Mobile Technologies: Flutter, iOS, Android, Swift, SwiftUI, Xamarin, MAUI Database: MySQL, MS SQL, PostgreSQL, MongoDB, NoSQL, MS Access ERP & CRM: MS Dynamics, Salesforce, Odoo, SugarCRM, Zoho CRM Payment Gateway: Pay_Pal, Stripe, Braintree, ProPay, 2checkout, CCAvenue, Authorize.net, Amazon Payments, WorldPay, SagePay, PayU, Skrill, SecurionPay, PayTM, Server and Hosting Management: AWS (Amazon Web Services) experience where I have managed cloud instances on EC2. Designed application architecture based on S3, SES, and other support features. Microsoft Azure, Rackspace, Google Cloud Platform, Godaddy, Bluehost, Digital Ocean, etc If you are looking for a Sr .Net Core and Mobile Apps Developer, I think I can be the best fit in the market. Please invite me to discuss your project. Thanks for reading!
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    Android
    Flutter
    iOS Development
    Amazon S3
    React
    Entity Framework
    Objective-C
    Swift
    ASP.NET
    Android App Development
    AngularJS
    Mobile App Development
    .NET Core
    Xamarin
    Kotlin
    React Native
  • $75 hourly
    I develop top-quality mobile & web apps, also working as a UX consultant and IT project manager. I am only satisfied with excellent software โ€” you will NEVER get average work from me. Whatever I do, I put 100% effort into it and always walk the extra mile. The result is apps which users love to use and which meet business goals. What I do: โ€ข cross-platform mobile apps in Flutter (iOS & Android, optionally web) โ€ข native iOS apps in Swift โ€ข web apps in React & Typescript or Flutter Web โ€ข project management for mobile or web app projects โ€ข UX consultancy, UX audits (just UX, I am not a designer) I am part of Upworkโ€™s exclusive ๐Ÿ†Expert-Vetted Talent๐Ÿ† program, which unites the top 1% of freelancers on Upwork (badge visible to enterprise clients only). Hire a top talent to increases the chances of your business to succeed significantly. What I bring to the table: โœ“ 10+ years of combined development, consulting & leadership experience โœ“ creative solutions, ideas & improvements โœ“ an agile process that lets you stay on top of progress and quality โœ“ highest engineering & algorithmic competence โœ“ strong work ethics โœ“ accountability โœ“ truly fluent English and good communication skill โœ“ always up-to-date with cutting-edge tech โœ“ software engineering master degree at top EU university โœ“ member of prestigious Toptal network Have a question, need tech consulting or building an app? Drop me a message!
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    Front-End Development
    Firebase
    Android App Development
    iOS Development
    Mobile App Development
    Flutter
    In-App Purchases
    Swift
    User Experience Strategy
    React
    IT Consultation
    GraphQL
  • $25 hourly
    12+ years of native app development experience. Feel free to consult me any time! iOS: - Swift UI, Swift, Objective-C - iOS SDK, XCode, Cocoa, iOS Guidelines - Core Data, Animation, Graphics, Text, UIKit - Push notification, background working - Watch, tvOS, Map, Font Kits - Storyboard and Auto layouts - iTunes Connect - Cocoa-pods Android: - Java Core, Android SDK - Kotlin - Android architecture and guidelines - Intents, Fragments, widgets, content-providers - Telephony, sensors, bluetooth, - Graphic and animation - Open-source frameworks: okHTTP, Retrolambda, Retrofit Skills: - UI and UX - Reactive programming (RxJava / RxSwift) - XML, JSON, HTTP, sockets - SQLite, Web, Concurrency - Networking with low signal connection - Voice and image recognition and augment reality - Fundamental programming patterns - Creative approach - Competence to write clear code and correctly create and use module tests - Ability and desire to gain new skills and learn new technologies - Practice of fast sorting out another's code if needed - Design and development of client-server applications If needed, I can provide resources for server-side and web development and any design.
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    Mobile App Development
    iOS Development
    Chat & Messaging Software
    Business with 1-9 Employees
    Map Integration
    Firebase
    Social Media Account Integration
    Mobile App Design
    Swift
    Node.js
    Dart
    React Native
    Objective-C
    Flutter
    Android
  • $25 hourly
    I started my development journey in 2016 as a Native Android developer and I have evolved my skillset in Ionic, Angular, React and Next.js as both Mobile and Web Developers. I love to build mobile and web apps using Hybrid technologies like Ionic/Angular and React Native. As I have experience as a Native developer so I can easily modify and create plugins. Coding is a passion and an essential factor in my life. Working with Web and mobile apps, I can be a precious asset for any organization in terms to provide a cost-effective solution, productivity, and efficiency for both Web and Mobile apps both. My objective for all my clients is complete satisfaction. I have a record of maintaining a 100% Job success rate through not only using my technical knowledge but with responsive and clear communication and also providing valuable suggestions. I have a proven track record of working on fixing a single specific bug to taking projects from start to end. Also, I have been hired repeatedly by my clients and also worked on long-term projects. I am skilled in developing Angular and Ionic web apps, PWA's, and Mobile Apps. Also, I have experience upgrading Ionic and Angular JS apps to the latest versions of Ionic 5. Also, I can help to migrate Ionic apps from Cordova to Capacitor. I can easily create Apps without any backend team because I have mastered handling Firebase Realtime and Cloud Firestore databases. Experience in working and handling large Firebase databases and helping many clients to reduce their billing costs. SKILLS โœ” Ionic 5/4/3/2 (Cordova or Capacitor) โœ” Angular โœ” React Native โœ” React Redux โœ” Next.js โœ” Node js, TypeScript, Javascript, Ajax โœ”GraphQL, MongoDB, MySQL โœ” Firebase Authentication, Database, Storage, Functions, Hosting, FCM, Cron Jobs, App Engine โœ” iPhone development โœ” Android development โœ” Amazon Web Services I assure you to deliver the deliverable on time with full satisfaction. I believe in long-term relationships with my client and to achieve it, I work with complete dedication and responsibilities. Will be happy If I can help you with any project.
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    Apache Cordova
    AngularJS
    Android
    JavaScript
    Ionic Framework
    Progressive Web App
    iOS Development
    Node.js
    Mobile App Development
    React Native
    Firebase
    PHP
    Swift
    Firebase Cloud Firestore
  • $40 hourly
    ๐Ÿ’ฏ After years of hard work, my 100% success rate and reviews prove my top-rated status. ๐Ÿ† Developed apps that are used by hundreds of thousands of users. ๐ŸŽ“ Computer Science Degree | Master in Business Administration | Flutter Expert ๐Ÿ‘จโ€๐Ÿ’ป With over a decade of experience, I specialize in developing high-quality mobile apps for iOS and Android. I founded a development agency, and you can find further details at leenspace.com. โœ… You can read our reviews on clutch.co/profile/leenspace. โญ If you hire me, you can expect regular feedback on progress and high-quality results. ๐Ÿค– Developing intelligent and interactive solutions using ChatGPT-4 and other AI tools. Let's take off to the next level! ๐Ÿš€ Love to turn ideas into full-fledged Apps for Startups or Corporations. ๐ŸŽจ We collaborate with partners to create visually stunning UI/UX applications using Figma. โ˜๏ธ We provide end-to-end solutions with scalable and secure backends using AWS, Azure, and Firebase. Let's jump on an initial 30-minute call to discuss your project in more detail and ensure our skillset will be a great fit. Best, Ignacio
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    Twilio
    API Development
    .NET Core
    Payment Functionality
    Map Integration
    Flutter
    Mobile App Development
    iOS
    QR & Barcode Scanner
    Review or Feedback Collection
    Xamarin
    Angular
    Android
    Firebase
  • $18 hourly
    ๐Ÿ†TOP RATED PLUS TALENT ๐ŸŒŸ ๐ŸŒŸ Responsive communication ๐ŸŒŸ ๐ŸŒŸ Full time Dedication ๐ŸŒŸ ๐ŸŒŸ Post-development maintenance Iโ€™m a native Mobile Developer. Have 8+ years experience in Mobile Development with Swift, SwiftUI, Java/Kotlin. I have developed many Mobile, PWA, and SPA for different clients on Upwork and different freelancing Platforms. Technologies I am adept in :- โ‡๏ธ Native iOS: Swift UI, Objective C, Xcode, Swift, SwiftUI, iOS SDK โ‡๏ธ Native Android: Kotlin, Java, XML, eclipse/android studio, Native Android SDK โ‡๏ธ Bubble.io โ‡๏ธ MVVM/ MVC/ Jatpack Architecture โ‡๏ธ Google map api, InApp billing, Facebook API, Twitter API, Instagram API, Youtube API โ‡๏ธ MySQL/MongoDB โ‡๏ธ Payment Integration: PayPal, Stripe, Braintree โ‡๏ธ Javascript / Typescript My Development Area : โœ… E-Commerce Apps โœ… Camera Apps โœ…Health / Fitness app/ Education โœ… Location based Apps , Google Maps integration โœ… Bar code/QR code Scanner Apps. โœ… iBeacon, BLE app โœ… Social Networking app, Social Dating app, Instant Messaging app โœ… Social Logins Integration such as Facebook, Twitter, Google+, YouTube, Instagram, LinkedIn etc. โœ… Push Notification Integration using One Signal, Firebase etc, โœ… Payment Gateway integration: Stripe, PPSDK and In-App Purchase etc. I follow following development processes & tools :: ๐ŸŒŸ Git/Bitbucket - commit/push/pull /branches ๐ŸŒŸ Environments โ€“ dev/staging/production ๐ŸŒŸ Android Studio/ xcode/ IDE ๐ŸŒŸ Agile/Scrum methodology ๐ŸŒŸ JIRA, Trello, Teamwork, Asana, Basecamp, Zoho, Redmine I believe that transparent communication and flexibility are the key elements for making a successful collaboration. So, I make sure that my clients stay updated about the development process. Assure 100% satisfactions. Thanks
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    NFC
    Wearable Technology
    Bluetooth LE
    Mobile App Development
    Chat & Messaging Software
    Apple Watch
    Java
    Swift
    Smartwatch
    iOS
    watchOS
    Wear OS
    Kotlin
    iOS Development
    Android App Development
  • $30 hourly
    Maximize your business with fast and robust mobile apps. Flutter and serverless approach is the best way to create native, smooth, and beautiful cross-platform mobile applications in record time. Why me: - 6 years in the mobile industry. The early bird in Flutter (from 2017). - Great experience in different fields: e-commerce, banking, maps, fin-tech, carpooling, etc. - Published more than 10 apps to App Store/Google Play. - Proficient with Git & CI/CD pipelines. - Fluent in English and fast response time. Why Flutter and Serverless: - One codebase for both apps. Less code - fewer bugs. - Pixel-perfect design. Platform-specific look or fully identical iOS/Android app. - No need to hire backend developers. Google's Firebase gives everything to build a scalable and stable app with its cloud and services. - You get a website along with a mobile app. Flutter is able to build websites and desktop apps from a single codebase. I'm happy to be involved in interesting and challenging projects.
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    iOS Development
    Social Media Account Integration
    Chat & Messaging Software
    SQLite
    User Authentication
    User Profile Creation
    Payment Functionality
    API Integration
    In-App Purchases
    Flutter
    Dart
    Android
    Kotlin
    Java
  • $50 hourly
    I love building software and solving problems. In my experience good software comes from passionate developers and good communication. Hi, I'm Michael, and I'm a self-taught full-stack engineer. I can offer you my obsession with quality. I build hybrid mobile apps, front-end apps, back-end APIs and I do it clean. I prefer to use test driven development and a modular architecture for my apps when possible. TDD, modularity, clean architecture, I use these for a purpose - I don't ship crap. What I ship is software that another developer can pick up and add to it, because as your business grows you will need changes and additions to the software, and instead of untangling legacy spaghetti you'll be able to just add more features. And with every added feature you'll have a magic test button that will tell you wether or not it works, instead of the typical developer answer of ยฏ\_(ใƒ„)_/ยฏ. Aside from my engineering skills I consider my most important trait to be my love of researching, this enables me to find solutions fast and choosing the right development path. The efficiency of the development process stems 20% from coding and 80% from efficient task scheduling. Main skills: -Proper SCRUM and Agile workflow -Clean architecture -TDD -Database architecture -GraphQL -Hasura -Postgres -Angular -RxJS -Ionic -AWS -Stripe -Express.js -Node.js -Stripe API -Firebase -SVG -Firestore -Google cloud -MongoDB (mongoose) -Javascript -HTML -CSS
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    Ionic Framework
    Angular
    PHP
    JavaScript
    RxJS
    React
    Progressive Web App
    API Development
    Front-End Development
  • $30 hourly
    ๐Ÿ‘‹ ๐–๐ž๐ฅ๐œ๐จ๐ฆ๐ž ๐ญ๐จ ๐จ๐ฎ๐ซ Full-Stack Web Application Development ๐ก๐ž๐š๐ฏ๐ž๐ง! As the CTO, my profound expertise lies in the intricate ๐ญ๐ž๐œ๐ก๐ง๐ข๐œ๐š๐ฅ ๐š๐ฌ๐ฉ๐ž๐œ๐ญ๐ฌ of Software Product Development. At Volpis, we are dedicated to transparency and pragmatism in our development processes. Trust in our comprehensive technical expertise and commitment to result-driven development, ensuring ๐ญ๐ก๐ž ๐ฌ๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ ๐จ๐Ÿ ๐ฒ๐จ๐ฎ๐ซ ๐ฉ๐ซ๐จ๐ฃ๐ž๐œ๐ญ ๐ข๐ฌ ๐ง๐จ๐ญ ๐ฃ๐ฎ๐ฌ๐ญ ๐š ๐ ๐จ๐š๐ฅ ๐›๐ฎ๐ญ ๐š ๐ ๐ฎ๐š๐ซ๐š๐ง๐ญ๐ž๐ž. ๐ŸŸข WHY CHOOSE VOLPIS? โšก๏ธ7+ ๐ฒ๐ž๐š๐ซ๐ฌ ๐จ๐Ÿ ๐ž๐ฑ๐ฉ๐ž๐ซ๐ข๐ž๐ง๐œ๐ž: Over seven years of practical involvement in Web Development using JavaScript frameworks equips us with a substantial knowledge base. โšก๏ธ๐ƒ๐จ๐ณ๐ž๐ง๐ฌ ๐จ๐Ÿ ๐ฌ๐š๐ญ๐ข๐ฌ๐Ÿ๐ข๐ž๐ ๐œ๐ฎ๐ฌ๐ญ๐จ๐ฆ๐ž๐ซ๐ฌ: Achieving Top Rated Plus status on Upwork reflects our dedication to excellence and client satisfaction in the realm of satisfied customers. โšก๏ธ๐–๐ข๐๐ž ๐ฌ๐ฉ๐ž๐œ๐ญ๐ซ๐ฎ๐ฆ ๐จ๐Ÿ ๐œ๐ฅ๐ข๐ž๐ง๐ญ๐ฌ: Successful collaborations span various client tiers, from Early-stage Startups to Enterprise Giants, establishing enduring relationships and fostering long-term partnerships. โšก๏ธ๐Œ๐จ๐ซ๐ž ๐ญ๐ก๐š๐ง 100 ๐ฌ๐ฎ๐œ๐œ๐ž๐ฌ๐ฌ๐Ÿ๐ฎ๐ฅ ๐ฉ๐ซ๐จ๐ฃ๐ž๐œ๐ญ๐ฌ: With a portfolio boasting more than 100 successful projects and garnering acclaim with over 20 positive reviews on Clutch, our track record attests to our competence and unwavering commitment to delivering top-quality results. โšก๏ธ๐‹๐จ๐ง๐ -๐ญ๐ž๐ซ๐ฆ ๐ญ๐ซ๐ฎ๐ฌ๐ญ๐ž๐ ๐ซ๐ž๐ฅ๐š๐ญ๐ข๐จ๐ง๐ฌ๐ก๐ข๐ฉ ๐ฐ๐ข๐ญ๐ก ๐œ๐ฅ๐ข๐ž๐ง๐ญ๐ฌ: Our involvement in long-term trusted relationships with clients extends beyond 100 successful projects, covering every aspect from requirements and strategy formulation to architecture, development, deployment, and ongoing support. ๐ŸŸข OUR SERVICES: Web Development; Full-Stack Development Front-End Development, Back-End Development; Quality Assurance & Project Management; Product and Technical Consulting; Maintenance and Support; Staff Augmentation; Discovery Phase & Business Analysis; UX & UI Web Design; Prototyping; Product Development. ๐ŸŸข TECHNICAL SKILLS: Web Development: JavaScript Front-End Development: React, Vue.js, Bootstrap Back-End Development: Node.js, ExpressJS, TypeScript Database: MySQL, PostgreSQL, MongoDB, Redis, Firebase Infrastructure: GitLab, GitHub, Bitbucket, Docker, Amazon Web Services, Heroku, Google Cloud Platform Architecture patterns: MVC, MVP, MVVM Networking:โ€‹ REST, JSON, XML, OAuth Maps: Mapbox, GoogleMaps, HereMaps, Mapbox, TomTom, Navigation, Routing Analytics: Google Analytics, Firebase, Mixpanel, NewRelic, Crashlytics Payment: Google Play Billing, Apple Pay, Stripe, Payfort ๐Ÿ™ŒLet's delve deeper into your project and collaborate closely to overcome any challenges. ๐‘๐ž๐š๐œ๐ก ๐จ๐ฎ๐ญ ๐ญ๐จ ๐ฆ๐ž ๐ง๐จ๐ฐ or ๐๐ซ๐ž๐ฌ๐ฌ ๐ญ๐ก๐ž โ€œ๐ˆ๐ง๐ฏ๐ข๐ญ๐žโ€ ๐›๐ฎ๐ญ๐ญ๐จ๐ง to begin our discussion! ๐Ÿ”‘ KEYWORDS: Web Application, Web Development, JavaScript, Node.js, CSS, HTML, React, API, API Integration, Web Design, TypeScript, MongoDB, App Development, Full-Stack Development, ExpressJS
    vsuc_fltilesrefresh_TrophyIcon Push Notifications
    ExpressJS
    Full-Stack Development
    App Development
    MongoDB
    TypeScript
    Web Design
    API Integration
    API
    React
    HTML
    CSS
    Node.js
    JavaScript
    Web Development
    Web Application
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