Hire the best Android developers
Check out Android developers with the skills you need for your next job.
- US$50 hourly
- 5.0/5
- (41 jobs)
Web Development, Desktop Development, Android Development, Database System Management Development, API and Cloud Sevices.
Android
Reverse EngineeringNext.jsNode.jsElectronTypeScriptJavaScriptAPI IntegrationData ScrapingSQLData MiningPython - US$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.
Android
BluetoothAmazon PollyMySQL ProgrammingAndroid App DevelopmentAmazon CognitoAmazon S3KotlinJavaJavaScript - US$25 hourly
- 4.8/5
- (18 jobs)
Always ready to interact with different clients, product managers, and developers in order to envision and provide initial models, designs that can be built. I like to constantly review the code to ensure the quality of the design by avoiding complexity, maintaining clarity, and collaborating with the team. and most important is collaborative working with a degree of humility. Mobile development is my profession. I like tackling complicated problems and providing reliable solutions. In the past few years, I have been working with Native Android & IOS, React Native, Electron, Firebase, GCP and a few other frameworks. I glue effective stacks together to get the system that can perform at the desired level. I write code that is reusable for other developers. Keeping the codebase clean is my cup of tea.
Android
Apache CordovaSwiftFlutterReact NativeElectroniOSFirebaseNode.jsReactMongoDBJavaSQLPHPJavaScript - US$40 hourly
- 5.0/5
- (42 jobs)
Turn Your Ideas into Reality! With over a decade of experience in the gaming industry, I specialize in game development and AR/VR solutions, bringing concepts to life with precision and creativity. Whether it's 3D, 2D, hyper-casual, action, puzzle, adventure, VR, or AR, I develop immersive experiences for mobile, PC, web, Meta Quest, and Apple Vision Pro. What I Offer: - Full-Cycle Game Development (From concept to launch) - AR/VR Game & App Development - Cross-Platform Compatibility - Multiplayer & Online Features - Business Plans & Monetization Strategies - Promotional Assets & Marketing Support I take a collaborative approach, ensuring your vision is at the heart of the development process. Every project receives my full attention, with high-quality execution and seamless performance. Let’s bring your next game or app to life! Contact me to discuss your ideas
Android
WebGLAR & VRGame DevelopmentGame DesignVR ApplicationPhoton Unity NetworkingMobile GameOnline MultiplayerUnityFirebaseC# - US$35 hourly
- 5.0/5
- (40 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.
Android
TabletHTMLAndroid SDKReact NativeFlutterSQLJavaAndroid App DevelopmentKotlinCSSMobile UI Design - US$20 hourly
- 4.7/5
- (18 jobs)
I am a mobile developer using react native technology, I have experience with payments with stripe and similar, experience building Expo apps, bare react native applications and eject from Expo to bare react-native project, please take a look to my previous experience with Upwork jobs
Android
Web DevelopmentRESTful APIRuby on RailsMobile Development FrameworkDocker ComposeGoogle Cloud PlatformAmazon Web ServicesJavaScriptReact NativeFirebaseReact - US$20 hourly
- 4.7/5
- (20 jobs)
I am a senior Android Developer having more than 5 years of experience and have worked with some of the top-rated Software Development Companies all over Pakistan (Classified). I have expertise in the following: - Android App Development - Android Jetpack Archtiture - Jetpack Compose - MVVM - MVI - Dagger2 - Retrofit - Volley - JAVA - Room - ViewBinding - ViewModel - LiveData - Mockito - Glide - Facebook - Payment Gateway Integration - Google API's - Google Map API's - LinkedIn SDKs - OpenCV - ML-Kit - OCR - Camera API - WebRTC - Janus Server (Media Server) - FreeSwitch (PSTN) - Bluetooth Low Energy Devices - NDK (C/C++ Libraries) You name it. Projects: - Audio/ Video (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, preparation 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 improve your project and make it cost-efficient.
Android
Apple XcodeAndroid SDKMobile App DevelopmentAndroid StudioObjective-CSwiftSmartphoneAndroid App DevelopmentKotliniOSC++Java - US$25 hourly
- 5.0/5
- (24 jobs)
=========== 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 =========== I am a 𝐓𝐎𝐏-𝐑𝐀𝐓𝐄𝐃 𝐟𝐫𝐞𝐞𝐥𝐚𝐧𝐜𝐞𝐫 𝐨𝐧 𝐔𝐩𝐰𝐨𝐫𝐤, with a proven track record of delivering high-quality projects with 𝟓-𝐬𝐭𝐚𝐫 𝐫𝐞𝐯𝐢𝐞𝐰𝐬. I have large work experience with clients from the 𝐔𝐒𝐀, 𝐆𝐞𝐫𝐦𝐚𝐧𝐲, 𝐒𝐰𝐢𝐭𝐳𝐞𝐫𝐥𝐚𝐧𝐝 𝐚𝐧𝐝 𝐒𝐞𝐫𝐛𝐢𝐚. I am here to give you the services of 𝐢𝐎𝐒 𝐚𝐧𝐝 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. I have more than 𝟕 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝐢𝐧 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭. I will develop quality code and client satisfaction is my motto,𝐈 𝐚𝐦 𝐥𝐨𝐨𝐤𝐢𝐧𝐠 𝐟𝐨𝐫 𝐥𝐨𝐧𝐠-𝐭𝐞𝐫𝐦 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. Send me a message to discuss your next big thing. I'm here to take your thoughts and make them a reality. I will likewise assist you with making these real factors surprisingly better. I work with full devotion and treat my customer's work as my own. Reach me decisively with your prerequisites. ============================================ 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 ( 𝐢𝐎𝐒 & 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 ============================================ 𝟭. 𝗘-𝗰𝗼𝗺𝗺𝗲𝗿𝗰𝗲 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝟮. 𝗗𝗼𝗰𝘁𝗼𝗿 𝗔𝗽𝗽𝗼𝗶𝗻𝘁𝗺𝗲𝗻𝘁 𝟯. 𝗙𝗼𝗼𝗱 𝗼𝗿𝗱𝗲𝗿𝗶𝗻𝗴 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝟰. 𝗦𝗼𝗰𝗶𝗮𝗹 𝗠𝗲𝗱𝗶𝗮 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝟱. 𝗖𝗮𝗯 𝗯𝗼𝗼𝗸𝗶𝗻𝗴 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 ( 𝗦𝗶𝗺𝗶𝗹𝗮𝗿 𝘁𝗼 𝗨𝗯𝗲𝗿/𝗢𝗹𝗮) 𝟲. 𝗖𝗼𝘂𝗿𝗶𝗲𝗿 𝗯𝗼𝗼𝗸𝗶𝗻𝗴 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝟳. 𝗕𝗮𝗿𝗰𝗼𝗱𝗲/𝗤𝗥 𝗰𝗼𝗱𝗲 𝘀𝗰𝗮𝗻𝗻𝗶𝗻𝗴 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝟴. 𝗖𝗵𝗮𝘁 𝗮𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 𝟵. 𝗤𝗥 𝗖𝗼𝗱𝗲 𝗦𝗰𝗮𝗻𝗲𝗿 𝗲𝘁𝗰 ================ 𝐂𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧 ================ => 𝐇𝐚𝐯𝐞 𝐚𝐧 𝐢𝐝𝐞𝐚 𝐟𝐨𝐫 𝐚𝐧 𝐚𝐩𝐩? With my expertise in Mobile Applications , I am confident that I can turn your idea into a reality. I understand the importance of communication and collaboration, and I am committed to working closely with you to ensure that your vision is realized in the final product. => 𝗤𝘂𝗶𝗰𝗸 𝘁𝘂𝗿𝗻𝗮𝗿𝗼𝘂𝗻𝗱 𝗮𝗻𝗱 𝗹𝗼𝘄 𝗰𝗼𝘀𝘁 𝗴𝘂𝗮𝗿𝗮𝗻𝘁𝗲𝗲𝗱. => 𝗜 𝗰𝗮𝗻 𝗰𝗿𝗲𝗮𝘁𝗲 𝗮𝗻𝘆𝘁𝗵𝗶𝗻𝗴 𝘁𝗵𝗮𝘁 𝘆𝗼𝘂 𝗰𝗮𝗻 𝗶𝗺𝗮𝗴𝗶𝗻𝗲 .𝗧𝗵𝗲𝗿𝗲 𝗶𝘀𝗻'𝘁 𝗮 𝘁𝗮𝘀𝗸 𝘁𝗼𝗼 𝗯𝗶𝗴 𝗳𝗼𝗿 𝗺𝗲. ==================================================== 𝐖𝐡𝐲 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧𝐬 𝐚𝐫𝐞 𝐧𝐞𝐜𝐞𝐬𝐬𝐚𝐫𝐲 𝐛𝐞𝐟𝐨𝐫𝐞 𝐬𝐭𝐚𝐫𝐭𝐢𝐧𝐠 𝐦𝐞𝐠𝐚 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬. ==================================================== 𝟭) 𝗬𝗼𝘂 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗮𝗯𝗹𝗲 𝘁𝗼 𝗸𝗻𝗼𝘄 𝗮𝗯𝗼𝘂𝘁 𝘆𝗼𝘂𝗿 𝗰𝗼𝗺𝗽𝗲𝘁𝗶𝘁𝗼𝗿𝘀. 𝟮) 𝘆𝗼𝘂 𝗰𝗮𝗻 𝘀𝗮𝘃𝗲 𝘆𝗼𝘂𝗿 𝗺𝗼𝗻𝗲𝘆 𝗯𝗲𝗳𝗼𝗿𝗲 𝘀𝘁𝗮𝗿𝘁𝗶𝗻𝗴 𝟯) 𝘆𝗼𝘂 𝗰𝗮𝗻 𝘀𝗮𝘃𝗲 𝘁𝗶𝗺𝗲 𝟰) 𝘆𝗼𝘂 𝘄𝗶𝗹𝗹 𝗯𝗲 𝗮𝗯𝗹𝗲 𝘁𝗼 𝗸𝗻𝗼𝘄 𝘄𝗵𝗶𝗰𝗵 𝘁𝗲𝗮𝗺 𝗶𝘀 𝗯𝗲𝘀𝘁 𝗳𝗼𝗿 𝗰𝗼𝗻𝘃𝗲𝗿𝘁𝗶𝗻𝗴 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗶𝗻𝘁𝗼 𝗿𝗲𝗮𝗹𝗶𝘁𝘆 𝟱) 𝘂𝗻𝗱𝗲𝗿𝘀𝘁𝗮𝗻𝗱 𝗵𝗼𝘄 𝘁𝗼 𝗯𝘂𝗶𝗹𝗱 𝗲𝗳𝗳𝗶𝗰𝗶𝗲𝗻𝘁 𝘀𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗳𝗿𝗼𝗺 𝘀𝗰𝗿𝗮𝘁𝗰𝗵 I will develop quality code and client satisfaction is my motto, I am looking for Short Term And long-term projects. 𝐒𝐞𝐧𝐝 𝐦𝐞 𝐚 𝐦𝐞𝐬𝐬𝐚𝐠𝐞 𝐭𝐨 𝐝𝐢𝐬𝐜𝐮𝐬𝐬 𝐲𝐨𝐮𝐫 𝐧𝐞𝐱𝐭 𝐛𝐢𝐠 𝐭𝐡𝐢𝐧𝐠. 𝐈'𝐦 𝐡𝐞𝐫𝐞 𝐭𝐨 𝐭𝐚𝐤𝐞 𝐲𝐨𝐮𝐫 𝐭𝐡𝐨𝐮𝐠𝐡𝐭𝐬 𝐚𝐧𝐝 𝐦𝐚𝐤𝐞 𝐭𝐡𝐞𝐦 𝐚 𝐫𝐞𝐚𝐥𝐢𝐭𝐲. I will likewise assist you with making these real factors surprisingly better. I work with full devotion and treat my customer's work as my own.
Android
Content LocalizationXMLSQLite ProgrammingFigmaWebsiteGoogle Maps APISwiftNode.jsAngulariOS DevelopmentAndroid App DevelopmentUser Profile CreationFirebaseKotlinJavaAndroid StudioMapbox - US$23 hourly
- 5.0/5
- (14 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.
Android
SwiftUIiOS DevelopmentiOSUI AnimationSwiftAsynchronous I/OPush NotificationsFlutterApp DevelopmentRESTful APIIn-App PurchasesDartNative App DevelopmentGit - US$35 hourly
- 5.0/5
- (53 jobs)
Hello. Shortly my name is Olex. I’m mobile developer with more than 7 years of experience in the field of mobile development and more than 10 years of programming in general. I believe that my strongest skill is making things done. How? Responsibility and creativity, thinking about whole the project, not only codebase. And I like to finish my work, finish applications or features. I always think about my clients needs for first even if it's not best for me. I also care about end-user experience and always share my ideas or doubts about a project I make. I'm honest and fair. I'm confident and I'm actively using AI in my work that helps me to fasten my work up to 20%. Listed below are my experience and skills: I work mostly as front-end mobile application developer on platforms: • iOS, WatchOS, • Android, • Hybrid. I work as back-end developer using SAAS solutions: • Firebase • Amazon Web Service I use programming languages and frameworks as follows: • Swift, Objective-C - as native iOS development, • Kotlin, Java - as native Android development, • Flutter & Dart - for hybrid development. • React Native & Javascript or TypeScript - for hybrid development • NodeJS & Javascript - for back-end development • Python - for bak-end development I worked with most of mobile technologies and frameworks: • UI/UX - SwiftUI, UIKit, WatchKit, Lottie files, • Image creation, changing/processing - CGGraphics, CGAnimation, • Working with data - CoreData, Keychain, • Video creation, changing/processing (on the fly as well), streaming - AVFoundation, WebRTC SDK, • Device capabilities - Bluetooth / BLE, Location, Apple maps, Google maps, Push notifications, Network, tunneling, traffic management, HealthKit, • Working with payments - In-app purchases, Apple Pay, Shopify, Stripe, • Client-server communication - RESTful API, GraphQL, XML, JSON, Websockets, Sockets, Firebase SDK, AWS, • AI - MLKit, ChatGPT API I work with many professional tools, but mostly with: • Xcode & Cocoapods - iOS development tools, • Android Studio & Gradle - for Android development, • Visual Studio Code - for Flutter hybrid development • Git - version control. • Jira, Redmine, Trello, Slack, Bitbucket, Gitlab - as team tools. I have experience of Firebase back-end development with Javascript. I understand imperative and declarative, OOP principles of programming, a lot of architecture patterns, like MVC, MVVM, MVP etc. I have experience of publishing applications in both Appstore & Google Play. I have experience of team leading and project management.
Android
UI AnimationUI GraphicsBluetoothSwiftObjective-CKotlinAmazonFirebasewatchOSAPI IntegrationAndroid App DevelopmentiOS DevelopmentAI ChatbotChatGPTProblem Solving - US$50 hourly
- 5.0/5
- (58 jobs)
Native Android Developer | Java & Kotlin 🚀 Top Rated Plus 💯 100% Job Success Score 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 🚀 Why Choose Me? 8+ Years of Servicing High-Profile Clients Strong Java/Kotlin Programming Skills Developer with a Keen Eye on Technological Advancements Detail-Oriented and Timely Deliveries
Android
Android AppAndroid StudioNative App DevelopmentFirebaseJavaAndroid App DevelopmentKotlinMobile App DevelopmentSQLiteCamera OperationNFCMobile AppAndroid SDKOpenCV - US$40 hourly
- 5.0/5
- (35 jobs)
Hello, I'm a top rated android developer with 5+ years of experience (100% success story). I write clean, scalable and testable code, easy to mantain, refactor or expand for new features. I have experience in: - Material design - retrofit - SQLite - Firebase - GCM/FCM - Google Play Services - Creating custom views with different complexity - Payment integration - a lot of commonly used libraries
Android
Game DevelopmentObject-Oriented ProgrammingMobile App DevelopmentAndroid App DevelopmentC#KotlinFirebaseJava - US$90 hourly
- 4.9/5
- (10 jobs)
10 years of experience working on native Android applications for high profile clients and businesses. 100% Job Success | 11,000+ Hours | Top Rated Plus | 5 Star Reviews Exclusively From planning, developing and publishing to maintaining and supporting high quality Android applications. I hope you see the experience displayed in my profile as an indication of my reliability. ✔︎ Constantly updating my knowledge with the most recent design patterns and code conventions; ✔︎ The delivery of a product that respects the highest standards of usability, performance and appearance is guaranteed; ✔︎ Great cost-benefit by delivering faster and higher quality products than the average; ✔︎ Flexible availability to always meet the client's needs. Vast experience managing development teams located in different places around the world. As an example, I've been managing a team that averaged 7 developers located in different countries, such as Canada, Ukraine, Pakistan, India and Brazil. ✅ Mobile Development Leader; ✅ Native Development; ✅ Kotlin and Java Expert; ✅ Clean code, DRY and KISS principles; ✅ Unit and automated testing; ✅ Well documented code; ✅ UI/UX Best Practices; ✅ NoSQL and SQL Databases; ✅ API Integration; ✅ Web Services Development. MySQL, SQLite, PostgreSQL, SQL Server, Firebase, Java, Kotlin, Android Studio, Android SDK, Android NDK, Device Owner, Play Store...
Android
RESTful ArchitectureMySQL ProgrammingMaterial DesignAndroid SDKSQLitePHPFirebase Cloud FirestoreJava - US$30 hourly
- 5.0/5
- (28 jobs)
Do you have a great idea for a mobile or web app but not sure where to start? I specialize in launching mobile & web apps from scratch With 4 years of experience as a Flutter Developer for iOS and Android app development and 2.5 years of expertise in React.js & Next.js for web development, I’ve developed over 15 mobile and web applications from scratch for clients worldwide. I am Top Rated Plus on Upwork, and my work history is impeccable. My expertise lies in creating robust, user-friendly applications that solve real-world problems and drive business growth. 🖥️ I bring a comprehensive skill set to the table, encompassing both front-end and back-end technologies. My proficiency in Flutter, React JS, and Next JS allows me to build seamless, cross-platform mobile and web applications that deliver exceptional user experiences. I have experience in developing SAAS platforms that scale efficiently. I am well-versed in modern development practices, including Test-Driven Development (TDD) and Agile methodologies, ensuring high-quality, maintainable code and efficient project management. I provide valuable UX/UI feedback and set up continuous integration/deployment (CI/CD) for fast, transparent progress, ensuring rapid iterations and quick access to app updates. 🔧 My technical arsenal includes: • Mobile Development: Flutter, FlutterFlow, iOS & Android Development • Web Development: React.js, Next.js, Tailwind CSS, SCSS, Material UI • Artificial Intelligence: ChatGPT, Gemini, Claude AI, VertexAI, OCR, Google ML Kit, TensorFlow integrations • Backend Development: Node.js, Express.js, Firebase Cloud Functions • Programming Languages: Dart, JavaScript, TypeScript, Python, Kotlin • State Management: BLoC, Riverpod, Provider, Redux • UI/UX Design: Adobe XD, Figma, Photoshop, Illustrator, Sketch • Version Control & CI/CD: Git, GitHub, GitLab, Bitbucket, Jenkins • Testing: Unit, Widget, Integration testing, Selenium, Appium 🔑 If you're wondering if I am familiar with the functionality you need for your project, here is an incomplete list of keywords: - Mobile Features: In-app purchases, RevenueCat, Stripe, Push Notifications, Agora SDK, WebRTC, Google Ads, SumUp, Camera, Gallery, Audio, Video, Contacts - Web Features: Progressive Web Apps (PWAs), Server-side rendering (SSR), Client-side rendering (CSR), SEO optimization, Styled-components, Charts, Animations, Responsive design - Authentication & Login: Login with email, Google, Facebook, Apple, Twitter, Github, phone number, Multi-factor authentication (MFA) - Location & Maps: GPS, Geofencing, Maps (Google, Mapbox), Geocoding - Data Handling: REST APIs, GraphQL, WebSockets, OAuth 2.0, Data Matrix, QR codes - Local Storage & Routing: Hive, Secure storage, SQLite, Local Storage, Session Storage, Go Router - Firebase: Firestore, Firebase Cloud Messaging, Analytics, Crashlytics, Hosting, Authentication - Web3 & Blockchain: Ethereum, Smart Contracts, Web3.js, DApp integration 🎯 The Key to Project Success 1. Discovery Phase: We’ll refine your vision and uncover new opportunities. 2. Strategic Planning: A clear, actionable roadmap – no detours, just progress. 3. Agile Development: Fast-paced sprints, constant feedback, and zero downtime. 4. Testing & QA: Thorough testing for a smooth, bug-free experience. 5. Launch & Beyond: App store optimization and post-launch support. 🚀 Why Clients Keep Coming Back - Communication: Clear, timely, and jargon-free. - Flexibility: Quick to adapt – I’m as flexible as they come. - Results-Driven: Your success is my priority. - Continuous Learning: Always up-to-date with the latest tech trends. ➡️ Here is what others have to say about me: 🌟 “Safwan is an exceptionally skilled developer with expertise in Flutter, React.js, Node.js, and Firebase. His work is consistently high-quality, and he has a strong knowledge of JavaScript, TypeScript, and Dart. Safwan’s experience with CI/CD and task management in Jira makes him a versatile professional capable of handling complex projects. His technical skills and commitment to quality make him a valuable asset to any team.” - Ryccardo, DoYourOrder. 🌟 ”Safwan definitely works according to the saying "Your word is your bond". He supported me from A to Z. From sketches of the app to the publication” - Severin, Limitless Group. 🤝 Let's collaborate to create something amazing! Whether you have a specific project in mind or need guidance on how to leverage technology to solve your business challenges, I'm here to help. Reach out today, and let's discuss how we can work together to achieve your goals.
Android
JiraNext.jsChatGPTAI ChatbotNode.jsFirebaseDartJavaScriptTypeScriptSaaS DevelopmentFront-End DevelopmentMobile App DevelopmentArtificial IntelligenceReactFlutter - US$50 hourly
- 5.0/5
- (14 jobs)
Having built, released & worked on 20+ apps - mostly being the sole developer, I bring experience in every part of building apps from planning / design & technical decisions, to building & deploying on the app stores! I'll help you understand how we can build or update your app & bring your plans to life in a beautiful, enjoyable, & consistent experience that will have your users coming back to your app, to propel you to success! With clean, tested, & maintainable code that can be built upon. ✅ Upwork Top Rated & Verified Mobile Developer ✔︎ 5-star rated | 100% Job Success | 5+ years experience ✔︎ 15+ apps published to Apple App Store / Google Play ✔︎ Extensive iOS and Android experience (Flutter, Dart) Communicating & staying on the same page is vital. Which is why I'll always keep you in the loop with progress updates via UpWork, Zoom, or otherwise! Getting the app on your phone ASAP, so you can test it yourself. You set the vision & requirements, and I'll make them a reality. Don't hesitate to send me an invite/message so we can talk more about your project via call or chat! 🚀 Frameworks and programming languages · Cross-platform App Development: Flutter & Dart (iOS, Android, Web, Desktop) 📚 SDKs and libraries · Database + Auth: Firebase, Supabase, NoSQL, PostgreSQL · Payments / Subscriptions: Stripe, RevenueCat, Superwall, Square · Maps / GPS Location: Mapbox, Google Maps, Google Places API, OpenStreetMap · Push Notifications: FCM, OneSignal, Supabase · Analytics and Performance Monitoring Google Analytics, MixPanel SDK, Crashlytics · Social Media Integrations: Facebook, Twitter, Instagram, LinkedIn, Snapchat · Cloud Services: Google Cloud Platform · Bluetooth Low Energy Device Connection / Integration · Advertising and Monetization: Google AdMob, Facebook Audience Network SDK, MoPub SDK · AI, Weather, Misc.: Auth0, Google ML Kit, Core ML, Bluetooth API, OpenWeatherMap API, OpenAI API · No Code / Low Code Builders: FlutterFlow · Flutter-Specific: BLoC, GoRouter, Clean Architecture · Unit Testing, Widget Testing, Integration Testing, API Testing, Mockito
Android
Android App DevelopmentiOS DevelopmentBluetooth LEIn-App PurchasesIn-App SubscriptionGoogle Maps APIMapboxPostgreSQLStripe APISupabaseMobile App DevelopmentFirebaseFlutterFlowDartFlutter - US$20 hourly
- 5.0/5
- (25 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.
Android
FlutterReact NativeiOS - US$20 hourly
- 4.9/5
- (59 jobs)
Languages: Java/Kotlin OOD: SOLID/DRY/KISS principles, GoF patterns, MVC/MVP/MVVM/MVI architecture Jetpack: ViewModel, LiveData, LifeCycle, Room, Paging, Navigation, WorkManager, Compose Libraries: RxJava/RxAndroid, Dagger/Hilt, Retrofit/OkHttp, Gson/Moshi, Glide/Picasso/UIL/Coil, ButterKnife, Realm, Parceler, EventBus, GPUImage, Timber, JodaTime/ThreeTen, Dexter, GoogleMaps/OSM/YandexMapKit, Zxing, MPAndroidChart SDK: Firebase, Facebook/Twitter/OK/VK/LinkedIn, Google Play Services (auth, analytics, cloud messaging, drive, ads, location, activity, in-ap billing)
Android
RESTful APIAndroid SDKAndroid App DevelopmentKotlinJavaAndroid StudioFirebase - US$20 hourly
- 5.0/5
- (86 jobs)
Unity Game Developer || VR/AR Specialist || Multiplayer Game Expert || AI Integration || XR Development With over 5 years of experience developing Unity games and applications in C#, I’ve successfully delivered 100+ projects across platforms such as the Meta Store, Steam, Google Play, and the Apple App Store. My extensive background includes VR/AR Development, Multiplayer Games, Mobile, PC/Mac, and WebGL. Why Work With Me? ✅ Diverse Expertise: From crafting captivating VR worlds to building engaging AR applications, I develop immersive experiences for devices like Quest 2 & 3, HTC Vive, Pico VR, and the Apple Vision Pro. I also have experience creating polished mobile and PC games, incorporating realistic game mechanics, physics, and visual effects. ✅ Technical Proficiency: My skill set covers a wide range of technologies and tools, including: • Unity VR/AR Development: OpenXR, Unity XR Toolkit, Meta All-in-One SDK, Vuforia • AI and Speech Technologies: Text-to-Speech, Speech-to-Text implementations, and AI NPC interactions using GPT-based integration • Multiplayer & Backend Integration: Photon PUN, Photon Fusion for multiplayer networking, PlayFab and CBS for leaderboards, secure login, data storage, and matchmaking • Cloud Services & Backend: Firebase for real-time databases, cloud-hosted services, and Azure for scalable cloud solutions • Game Development Frameworks: Universal Fighting Engine 2 (UFE2) for combat mechanics, Car Racing Systems for realistic vehicle simulations, and full-body VR character animations for immersive movement • In-App Purchases & Monetization: Seamless integration of in-app purchases, ads, and other monetization strategies for mobile and web-based games • Custom APIs & Cross-Platform Integration: Integrating REST APIs to enhance game features and functionality across multiple platforms ✅ Proven Client Satisfaction: Clients appreciate my dedication to quality and attention to detail. Here’s what one of my clients said: “Mukkaram S. is a very nice and kind freelancer. He helped me from start to finish and ensured I fully understood how the project works.” ✅ Specialized Skills: • Development of AI NPCs with real-time conversations for lifelike gameplay interactions • Creating immersive full-body and half-body VR character animations for a seamless user experience • Physics-based simulations for racing, combat mechanics, and interactive gameplay 💡 Let’s Turn Your Vision Into Reality! If you’re looking for a Unity developer to bring your game or application concept to life, let’s connect! Send me a message, and we can start building your next groundbreaking project today. This version incorporates your suggested opening and aims to be more direct while including all your diverse expertise and specialized skills. It’s focused on being clear, keyword-optimized, and client-oriented.
Android
Game Development Bug FixGame ConsultationGame PrototypeGameMakerGame ArtAI Model IntegrationProgramming Bug FixPC GamePhoton Unity NetworkingAR & VR DevelopmentGame DevelopmentGameMobile GameUnityOnline Multiplayer - US$30 hourly
- 5.0/5
- (14 jobs)
Are you seeking a top-tier mobile app development service? Look no further! I'm Hafiz, a Flutter expert with a solid Computer Science background and 4+ years of experience. I've had the pleasure of collaborating with startups and established businesses in various countries like the US, UK, Germany, and more. My expertise lies in crafting user-centric mobile applications using the popular cross-platform framework, Flutter. My main goal is to deliver exceptional results that surpass your expectations. My Skills and Services includes but not limited to: * Flutter Development: I specialize in creating high-quality, cross-platform mobile apps using Flutter. * UI/UX Design: I have a keen eye for design and can create intuitive and engaging user interfaces. * Firebase Integration: I can seamlessly integrate Firebase with your app for authentication, data storage, and more. * Rest API Integration: I have experience working with REST APIs and can integrate them into your app for data exchange. * Google Maps Integration: I can integrate Google Maps into your app for location-based features. * Payment System Integration: I can integrate various payment gateways into your app for secure transactions. My Process Ensures Success: 1. Project Discovery: We'll have a chat or call to understand your project goals and requirements. 2. Technical Solution & Project Scope: I'll provide a detailed scope of work, technical specifications, timeline, and cost breakdown. 3. Project Execution: - Design Mockups: I'll create design mockups to showcase the final look and feel of your app. - Development Phase: I'll keep you updated throughout the development process with regular meetings. - Quality Assurance: I'll conduct thorough testing to ensure your app meets the highest standards. 4. Deployment and Maintenance: I'll deploy your app to the stores or domains and provide 60 days of free maintenance. Get a Quote Today!
Android
iOSAPI IntegrationMobile App DesignFirebaseDartAndroid App DevelopmentPush NotificationsFlutterMobile App DevelopmentGoogle Maps APIHybrid App DevelopmentiOS DevelopmentMobile App - US$14 hourly
- 4.8/5
- (16 jobs)
My name is Mohammed Hany Eletreby, I am based in Egypt and I am a Senior Android Developer with more than 8 years of experience building robust and user-centric applications. My expertise in Kotlin, swift, Jetpack Compose, swift UI, MVVM combined with a strong understanding of Android and iOS architecture enables me to deliver high-quality, scalable solutions. I am eager to contribute my skills to your team and drive your mobile initiatives forward.
Android
User AuthenticationAndroid SDKTabletCameraFirebaseFirebase Realtime DatabaseFirebase Cloud FirestoreKotlinAdobe IllustratorAndroid StudioJavaAndroid App Development - US$50 hourly
- 5.0/5
- (51 jobs)
Hi, My name is Arsanious, I'm a professional Mobile App Developer with a proven ability to efficiently solve complex problems and collaboration with teams to deliver high-quality scalable code. Working as a Mobile App developer is my real passion that originally came starting from being a kid who wants to explore every little thing on mobile technology. 🟣My Services: ✔️Android Development ✔️Kotlin ✔️Jetpack Compose ✔️Ktor ✔️Architecture: MVVM, MVI, Clean Architecture ✔️Java ✔️Scalable documented code 🟣Tools: Coroutines, Flows, Retrofit, ViewModel, Hilt, ViewBinding, WorkManager, AlarmManager, Room Local Database, Git, Android Studio
Android
POS Terminal DevelopmentAPIXMLMaterial DesignJSONAndroid SDKLocation-Based ServiceSmartphoneFirebaseMobile App DevelopmentKotlinRetrofitAndroid StudioAndroid App Development - US$65 hourly
- 5.0/5
- (4 jobs)
Hi, I am a freelance react-native developer with 5 years of experience in the field of mobile development. Throughout my career I've been involved in the creation of mobile applications of any kind, from small MVP projects for start-ups to complex internal and external tools and platforms for big enterprise companies. I believe that well written and documented code is the foundation of any successful software project.
Android
ReduxApple XcodeGraphQLTypeScriptFirebaseJavaScriptiOSReact NativeAndroid Studio - US$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!
Android
Core JavaMobile App DevelopmentAndroid App DevelopmentIn-App PurchasesCameraSocial Media Account IntegrationJavaFirebase - US$30 hourly
- 4.9/5
- (78 jobs)
Hi, nice to meet you! My name is Brandon(AKA Andy). I'm a Unity developer, with game design experience of a total of a bit over 7 years now, with many of projects under my belt, building games and applications for mobile, WebGL, PC, VR, and Switch. And I even have a little experience with Blender I have about five years of game design experience, about two years with Game Maker back in the day, and four years with Unity. Contact me with any job offers involving Unity!
Android
Mobile GameOnline MultiplayerScripting3D DesignGame DesignC# - US$50 hourly
- 5.0/5
- (5 jobs)
I'm an Android/Java developer, full time freelancer, attention to detail kind of guy having more than 6 years of experience, focusing on best possible user experience. I have around two dozen apps ranging from business apps to audio player, notes reading app and a podcast manager on Play Store, out of which I actively maintain 5 and I have seen through at least 10 apps from inception to release. Technical Skills: Experienced with Android APIs, SQLite, implementing Content Providers, Firebase (including Crashlytics), Ad Sdks, connecting apps to back ends, caching api data locally for better user experience, push notifications. Also experienced with commonly used libraries including Retrofit, Volley, Glide and okhttp. Very strong at various debugging techniques, memory optimization, building complex yet responsive layouts to be compatible with all kind/sizes of Android devices.
Android
RESTful APITest-Driven DevelopmentAndroid SDKAndroid App DevelopmentiOS DevelopmentSwiftKotlinJava - US$27 hourly
- 5.0/5
- (21 jobs)
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
Android
Android SDKSmartphoneGoogle AdsMobile App DevelopmentAPIAPI IntegrationAndroid Room PersistenceUnit TestingFirebaseKotlinJavaAndroid App DevelopmentRetrofit - US$17 hourly
- 5.0/5
- (15 jobs)
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!
Android
RxJavaMixpanelCore JavaDatabase ProgrammingWeb ServiceBusiness with 1-9 EmployeesPayment Gateway IntegrationAndroid App DevelopmentFirebaseKotlinMobile App Development Want to browse more freelancers?
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