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Sergei S.
$25/hr
100% Job Success
$20K+ earned
Available now
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A dedicated Software Developer with over twenty years of experience professionally deploying full-cycle solutions. My latest experience is developing complex, market-oriented Android applications, converting Swift code to Kotlin, and troubleshooting bugs in Android applications. With expertise in Android engineering, I will resolve your app development needs while achieving the results expected from a senior professional. I am reliable in working with minimal supervision and always conduct thorough research before reaching out with questions.
Sergei S. has worked .
Mubbashir A.
$25/hr
100% Job Success
$10K+ earned
Available now
Offers consultations
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𝟲+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 👔 | 𝟱𝟬+ 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 𝐰𝐢𝐭𝐡 𝟭𝟬𝟬𝗠+ 𝐝𝐨𝐰𝐧𝐥𝐨𝐚𝐝𝐬 📱 | 𝟏𝟎𝟎% 𝐉𝐨𝐛 𝐒𝐮𝐜𝐜𝐞𝐬𝐬 🏆 | 𝐆𝐨𝐨𝐠𝐥𝐞 & 𝐀𝐖𝐒 𝐂𝐞𝐫𝐭𝐢𝐟𝐢𝐞𝐝 🎓 | 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 🥇 🌟 With over 7 billion mobile users globally, apps account for 90% of mobile time spent. The App Store and Play Store combined house over 6 million apps, making high-quality development crucial to stand out. I specialize in creating high-performing, native and cross-platform mobile apps with stunning UI/UX and scalable functionality to help your business bloom in today’s competitive mobile-first world. Having over 5 years of experience as a Mobile App Developer, I’m not just building apps; I’m creating immersive experiences that ignite passion and engagement. Armed with Java and Kotlin, I create native apps whose performance speaks for it. Jetpack Compose is my canvas, where I create complex UIs with functionality to deliver interfaces that pop. Meanwhile, Flutter & Flutter Flow allows me to create stunning cross-platform apps that defy expectations. I thrive on pushing boundaries and turning visionary ideas into reality. 💼 𝐌𝐲 𝐒𝐤𝐢𝐥𝐥𝐬𝐞𝐭: ✔ Java, Kotlin, Jetpack Compose, Flutter, Flutter Flow & React Native for Mobile Apps. ✔ RESTful & GraphQL APIs Integration. ✔ Integrating AI/ML to your apps for providing intelligence to your apps. ✔ Integrating cloud services (e.g. Firebase, Supabase, Azure, AWS) for backend support, real-time databases and authentication ✔ Developing decentralized applications (dApps) and integrating blockchain technologies for secure transactions and data integrity ✔ Connecting and managing IoT devices, enabling seamless communication and data exchange between mobile apps and smart devices. ✔ Advanced techniques for profiling and enhancing app performance, including memory management and reducing load times. ✔ Knowledge of best practices in securing mobile applications against vulnerabilities and data breaches. ✔ Experience with tools like Jenkins, GitHub Actions, and Bitrise to automate testing and deployment processes 𝐿𝑒𝑡’𝑠 𝑐𝑜𝑛𝑛𝑒𝑐𝑡 𝑎𝑛𝑑 𝑒𝑥𝑝𝑙𝑜𝑟𝑒 ℎ𝑜𝑤 𝐼 𝑐𝑎𝑛 𝑏𝑟𝑖𝑛𝑔 𝑦𝑜𝑢𝑟 𝑚𝑜𝑏𝑖𝑙𝑒 𝑎𝑝𝑝 𝑖𝑑𝑒𝑎𝑠 𝑡𝑜 𝑙𝑖𝑓𝑒! 𝑊ℎ𝑒𝑡ℎ𝑒𝑟 𝑦𝑜𝑢'𝑟𝑒 𝑙𝑜𝑜𝑘𝑖𝑛𝑔 𝑡𝑜 𝑏𝑢𝑖𝑙𝑑 𝑎 𝑏𝑟𝑎𝑛𝑑-𝑛𝑒𝑤 𝑎𝑝𝑝, 𝑜𝑝𝑡𝑖𝑚𝑖𝑧𝑒 𝑎𝑛 𝑒𝑥𝑖𝑠𝑡𝑖𝑛𝑔 𝑜𝑛𝑒, 𝑜𝑟 𝑖𝑛𝑡𝑒𝑔𝑟𝑎𝑡𝑒 𝑐𝑢𝑡𝑡𝑖𝑛𝑔-𝑒𝑑𝑔𝑒 𝑡𝑒𝑐ℎ𝑛𝑜𝑙𝑜𝑔𝑖𝑒𝑠, 𝐼'𝑚 ℎ𝑒𝑟𝑒 𝑡𝑜 ℎ𝑒𝑙𝑝. 𝐌𝐲 𝗧𝗮𝗴𝘀 : 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐃𝐚𝐫𝐭 | 𝐅𝐥𝐮𝐭𝐭𝐞𝐫 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗥𝗲𝗮𝗰𝘁 𝗡𝗮𝘁𝗶𝘃𝗲 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐁𝐮𝐢𝐥𝐝𝐞𝐫 | 𝐊𝐨𝐭𝐥𝐢𝐧 | 𝐉𝐚𝐯𝐚 | 𝐍𝐚𝐭𝐢𝐯𝐞 𝐀𝐧𝐝𝐫𝐨𝐢𝐝 | 𝐒𝐰𝐢𝐟𝐭 | 𝐎𝐛𝐣𝐞𝐜𝐭𝐢𝐯𝐞 𝐂 | 𝐍𝐚𝐭𝐢𝐯𝐞 𝐈𝐎𝐒 I 𝗜𝗢𝗧 | 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 | 𝗔𝗪𝗦 | 𝗔𝘇𝘂𝗿𝗲 | 𝗙𝗹𝘂𝘁𝘁𝗲𝗿𝗙𝗹𝗼𝘄 | 𝗶𝗢𝗦 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗜𝗼𝗧 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗕𝗟𝗘 𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗕𝗼𝗼𝗸𝗶𝗻𝗴 𝗔𝗽𝗽 | 𝗦𝗼𝗰𝗶𝗮𝗹 𝗔𝗽𝗽 | 𝗠𝗮𝗿𝗸𝗲𝘁𝗽𝗹𝗮𝗰𝗲 𝗔𝗽𝗽 | 𝗦𝘁𝗿𝗶𝗽𝗲 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 | 𝗙𝗶𝗿𝗲𝗯𝗮𝘀𝗲 | 𝗦𝘂𝗽𝗮𝗯𝗮𝘀𝗲 | 𝗔𝗜 𝗠𝗼𝗯𝗶𝗹𝗲 𝗔𝗽𝗽𝘀 | 𝗢𝗽𝗲𝗻𝗔𝗜 | 𝗔𝗪𝗦 | 𝗚𝗼𝗼𝗴𝗹𝗲 𝗖𝗹𝗼𝘂𝗱 | 𝗖𝗵𝗮𝘁𝗕𝗼𝘁
Mubbashir A. has worked .
Rajat P.
$30/hr
100% Job Success
$200K+ earned
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⭐️⭐️⭐️⭐️⭐️ In TOP 3 % Talent On Upwork 🏆 Certified Mobile App Developer | Flutter | React Native| Kotlin | Full Stack Developer ✅ 250 ➕ Mobile apps 100 ➕ websites live ✅ 80%+ Long-term & Repeat Clients ✅Senior Full Stack Developer with 13+ years of experience 🔝 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 𝐏𝐥𝐮𝐬 𝐝𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 🔸My availability is according to your country's time zone 🔸High-Quality Work🔸 Cost-Effective I am very efficient in my work. My first and foremost goal is to satisfy my clients From start to finish till the project is delivered, I constantly communicate with my clients and support them in their time zone. I update the client daily. The most important thing is to provide maintenance support to the client after the completion of any project. Whether you are a 𝗦𝘁𝗮𝗿𝘁𝘂𝗽, Newley 𝗕𝘂𝘀𝗶𝗻𝗲𝘀𝘀 or looking for 𝗠𝗩𝗣, I will give you Best 𝗤𝘂𝗮𝗹𝗶𝘁𝘆 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀 at an 𝗔𝗳𝗳𝗼𝗿𝗱𝗮𝗯𝗹𝗲 𝗖𝗼𝘀𝘁, 💯 𝗙𝗿𝗲𝗲 𝟯𝟬 𝗱𝗮𝘆𝘀 𝘀𝘂𝗽𝗽𝗼𝗿𝘁 𝗮𝗳𝘁𝗲𝗿 𝗽𝗿𝗼𝗷𝗲𝗰𝘁 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗶𝗼𝗻 𝐖𝐡𝐚𝐭 𝐂𝐥𝐢𝐞𝐧𝐭 𝐬𝐚𝐲𝐬 𝐚𝐛𝐨𝐮𝐭 𝐦𝐞🙂 ⭐⭐⭐⭐⭐5.00 "Rajat and the team were great to work with! They are skilled, great communicators, and good people. They worked hard to accomplish whatever task I had for them. I highly recommend them and will be using them in the future for other projects!" 𝑹𝒊𝒄𝒉 𝑴𝒊𝒍𝒍𝒆𝒓-𝑷𝒂𝒚𝒔𝒐𝒏 ⭐⭐⭐⭐⭐ 5.00 "Amazing work as always! I highly recommend working with Appentus team." 𝑻𝒐𝒃𝒊𝒂𝒔 𝗘𝘅𝗽𝗲𝗿𝘁 𝗶𝗻 𝗛𝘆𝗯𝗿𝗶𝗱 𝗔𝗽𝗽𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 / 𝐍𝐚𝐭𝐢𝐯𝐞𝗔𝗽𝗽 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 ► React Native ► Flutter ► Android (Java Native App Development) ► IOS (Swift App Development) ► Firebase ► MVC/MVP/MVVM ► REST APIs ► In-App Purchases 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞: 🟥Finance 🟥Healthcare. 🟥E-commerce 🟥Logistics and Transportation 🟥Education 🟥Public safety. 🟥 Banking 🟥 Automotive 🟥 B2B 🟥 B2C 𝗣𝗿𝗼𝗳𝗶𝗰𝗶𝗲𝗻𝗰𝘆 𝗰𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝘀𝗸𝗶𝗹𝗹𝘀 𝗶𝗻 𝘁𝗵𝗲 𝗳𝗼𝗹𝗹𝗼𝘄𝗶𝗻𝗴 𝘁𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀: ✔OpenAI and ChatGPT API (gpt-4, whisper) and various other models. ✔Authorization with Google, Facebook, Twitter, Auth0, Github, Gmail and others ✔WordPress API - Uploading images and templates via WordPress API ✔ Full Stack Development: MEAN | MERN ✔ PHP Frameworks (laravel, codeigniter, yii, cakephp and zend). ✔ PHP CMS (Wordpress, Shopify). ✔ Database integration: SQLite, firebase, etc. ✔ API integration ✔ Frontend Development: HTML5, CSS3, Bootstrap v5.3, JavaScript, TypeScript, React.js, Vue.js, Angular ✔ Backend Development: Laravel, PHP, Node.js, Express.js, Django, Flask ✔Database Management: MongoDB, MySQL, PostgreSQL, Firebase, SQLite ✔API Development and Integration: RESTful APIs, GraphQL, OAuth, JWT ✔Cloud Services: AWS, Microsoft, Firebase, Azure Google Cloud Platform (GCP), Version Control: Git, GitHub, Bitbucket 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲: ✔ Proven track record of delivering high-quality projects on time and within budget. ✔ Strong communication skills, ensuring clear understanding and alignment with client requirements. Feel free to reach out to discuss your project requirements and explore how we can work together. Looking forward to connecting! 🙂
Appentus Technologies
Associated with
Appentus Technologies
$900K+
earned
$20/hr
100% Job Success
Available now
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I help startups and businesses build high performance mobile apps using Flutter and Native Android with Kotlin, from early MVP stage to fully scalable production apps. I also help brands build and grow their Shopify stores with custom development, theme customization, and conversion focused optimization. Whether it is a new store setup or improving an existing Shopify store, I focus on performance, user experience, and sales. I have worked on multiple production apps used by thousands of users, including eCommerce apps, on demand apps, real time chat apps, and SaaS based mobile platforms. My focus is always on scalability, performance, and clean architecture. With 8 plus years of experience and a 100 percent Job Success Score on Upwork, I specialize in Flutter app development, Android app development, bug fixing, app performance optimization, and scaling apps for real users. From MVP to scaling, I focus on writing clean and maintainable code that supports long term product growth. +What I can help you with - Flutter app development for iOS and Android - Cross platform mobile app development - Native Android app development using Kotlin and Java - Mobile app UI and UX implementation - API integration and REST API development - Payment gateway integration including Stripe, Razorpay, and in app purchases - Real time app development with chat, WebRTC, and live streaming - Firebase integration including authentication, Firestore database, and push notifications - Mobile app performance optimization and crash fixing - Maps integration using Google Maps and MapBox for delivery and tracking apps - On demand app development and booking apps - eCommerce mobile app development - Code refactoring and architecture improvement - App Store and Google Play app deployment +Shopify services - Shopify store development and customization - Shopify theme customization using Liquid - Shopify app integration and custom features - Shopify speed optimization and performance improvement - Shopify product setup, payment setup, and store management Conversion rate optimization for Shopify stores +Technical expertise - Languages Kotlin, Java, Dart, SQL, Liquid - Mobile development Flutter, Android SDK, Kotlin Coroutines, RxJava - Architecture and patterns Clean Architecture, MVVM, MVI - Integrations and services Firebase, WebRTC, Twilio, AdMob, Google Maps, MapBox, Shopify APIs, REST APIs - Databases SQLite, Room, DataStore - Tools Android Studio, Git, GitHub, Jira, Trello, Swagger, Figma, ChatGPT +How I work - I focus on scalable mobile app development so your app can grow without breaking - I keep communication simple and clear with regular updates - I prioritize app performance, fast loading, and smooth user experience - I deliver reliable work with realistic timelines I do not just write code. I help build mobile apps and Shopify stores that are stable, scalable, and ready for real users. Let’s build something great. If you are looking for a Flutter developer, Android developer, or Shopify developer who understands both tech and business, feel free to message me. Best regards Pranjul D. 🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬: Flutter developer | Mobile app developer | App development | App development company | Mobile app development company | Android app development | Mobile application development | Freelance app developer | Flutter app development | Flutter app | Flutter mobile app | Flutter application | Flutter mobile application | Flutter mobile app developer | Full stack flutter developer | Flutter app | Flutter app developer | AI app developer | Flutter Supabase | Mobile app development | MVP app development | MVP App developer | application developer | Ai application developer | Full stack developer flutter | Flutter expert | MVP developer | MVP app developer | Fitness app developer | AI mobile app developer | Hire Mobile app developer | Hire iPhone developer | Android app developer | iOS app developer | iPhone app developer | Swift | iPad app developer | iOS development | Fitness app developer | App developer | Ai Mobile app developer | Mobile application develper | AI App developer | App developer | MVP App developer | Real estate app development | Healthcare app development | App Development | AI App developer
$15/hr
100% Job Success
$1K+ earned
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Hello, I'm Android (since 2019) developer. I tend to keep myself up to date with important changes in the Android world and regularly look into new ways of solving things. Always looking for new challenges and opportunities. Good skills: • JAVA - Android App development. • Kotlin - Android App development. • Android development: - Clean Architecture; - Data storage: Realm, SQLite, SharedPreferences, Internal/External memory; - Sensors, Location and Maps, Geofences, beacons; - Understanding and using guidelines; Material Design; common UI/UX patterns; using support libraries; - Creating applications for multiple screen resolutions/sizes; - Firebase (database, authentication, analytics, notifications, remote config); - Integrations with social networks (facebook, google, twitter, foursquare, vkontakte); - Dealing with REST API; - Signing and publishing applications. Successfully implemented projects on Google Play (1m+ downloads); - Open source libraries: Dagger 2, Retrofit 2, ButterKnife, EventBus, Sockets Timber/Hugo, Crashlytics. Version control: git, bitbucket & Microsoft Azure Devops
Masood H. has worked .
$5/hr
100% Job Success
$1K+ earned
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As a senior Android developer with +7 years of experience, I have a proven track record of developing high-quality mobile apps across a variety of industries. I have built TV apps, e-commerce apps, financial apps, NFC and Bluetooth apps, educational apps, Trivia apps, Navigation apps, health apps, chat apps, and social media apps. I possess a deep understanding of the Android platform and its various components, and I am proficient in Java and Kotlin programming languages. I am knowledgeable in mobile app development best practices, such as design patterns. Additionally, I have experience working with third-party libraries and APIs commonly used in Android development. I am capable of developing user-friendly mobile apps that meet business objectives and possess strong problem-solving and communication skills. I have a demonstrated ability to work collaboratively with cross-functional teams, including designers, QA engineers, and product managers
Eslam M. has worked .
Roman P.
$35/hr
96% Job Success
$200K+ earned
Available now
Offers consultations
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🏆 𝗧𝗢𝗣 𝗥𝗔𝗧𝗘𝗗 𝗣𝗟𝗨𝗦 🏆 ✅ Mobile App Developer 7+ years of experience ✅ SaaS Mobile App Developer 5+ years ✅ 35 mobile app development jobs completed successfully ✅ Android and iOS Mobile Expert ✅ Built 27+ UX-first Mobile App development jobs for 22 companies ✅ On-Time and Cost-Effective Delivery ✅ Future-Proof Solutions Showing a Minimum 41% ROI ✅ 4354 mobile app development hours on Upwork and still counting ✅ 100% Job Success in mobile app development (Client Satisfaction Ratio) ✅ 98% of Clients Recommended working with me ✅ 80% Long-term Repeat Clients ✅ 7+ years of experience in mobile app development, 6 years experience in iOS mobile app development, 7 years experience in Swift and Kotlin, 4 years experience in Flutter, React Native, 2 years experience in KMM, KMP Full stack mobile app developer and mobile app UI UX designer with 7+ years of experience in Mobile App Development, specializing in iOS, Swift, Android, Kotlin, KMM, Kotlin Mutliplatform / KMP, React Native, and Flutter. I have successfully delivered 120+ mobile applications in different roles as mobile app developer, flutter app developer, flutter full stack developer, flutter flow, mobile app design, mobile ui ux designer, swift ios developer, android developer, kotlin developer, react native developer, mobile game developer achieving a 5-star rating on Upwork and helping clients scale their businesses with high-performance solutions. Apart from mobile app development, I specialize in Mobile App Design for both iOS and Android, as well as Web App Design for SaaS platforms. My expertise extends to Interaction Design, User Flow Design, and creating seamless User Experience (UX Design) and User Interface (UI Design). I follow a Design Thinking approach, ensuring every solution is user-centered and problem-solving. My process includes UI/UX Wireframing, Prototyping, and building Style Guides or UI-kits for consistent branding. I perform Design Audits and Design QA to maintain high standards across all projects. 🛠️ Design Tools: My designs come to life through powerful tools like Figma, Zeplin, and InVision for prototyping and collaboration. I leverage Adobe Illustrator, Adobe Photoshop, and Adobe XD for detailed visual design. For complex wireframes and flow mapping, I turn to Axure, Sketch, and Balsamiq. I also use Miro and Abstract for brainstorming and version control, while project communication and management happen in Slack and Jira. Our Expertise at a Glance • Mobile App Development: Android, iOS, & Cross-Platform App Development using Java, Kotlin, Swift, Objective C, Flutter, and more. • Website and Full Stack Development: Crafting seamless back-end experiences with .Net, Python, Java, Javascript, React.js, Angular.js, Node.js, MERN, MongoDB, PHP, etc. • Logo & UI/UX Design: Bringing your ideas to life with Adobe XD, Photoshop, Sketch, Figma, etc. • End-to-End Solutions: From logo design, UI/UX development, workflow setup, testing to deployment in app stores, we've got it all covered. We do not use v0.dev lovable.app CursorAI, Cursor, Windsurf, Trae, GitHub Copilot, Tabnine, Qodo, Devin AI, and AutoDev for speed up coding, we know other methods to do it efficiently. We offer a comprehensive range of development services across mobile, web, and cloud platforms. Our mobile app development expertise includes building Android and iOS applications using technologies such as Flutter, Swift, Objective-C, React Native, and Xamarin, optimized for both smartphones and tablets with a focus on cross-platform compatibility. In website and full stack development, we work with .NET technologies, including full stack .NET development, .NET Core, and Python with Django. Our team is experienced in developing both backend systems and user-friendly, responsive web interfaces, as well as working with various CMS platforms. Our DevOps and DevSecOps capabilities cover cloud infrastructure and automation, leveraging tools like AWS, Azure, Docker, Kubernetes, GitLab CI, Ansible, and Terraform to build secure and scalable deployment environments. We also build cross-platform and web applications using frameworks like Three.js and design tools such as Webflow, creating visually engaging and functional user experiences across devices. Additionally, we are well-versed in integration and automation tools, including WebSockets, data integration, the ABP Framework, Discord API, and Autotask, allowing us to create seamless connectivity and workflow automation between systems. Talent Good Knowledge, Talented, Experienced, Skilled, Strong Experience, Proven Experience, Agency, Team, Company, Specialist, Proven Track Record, Strong Background, Write Clean Code, Deep Expertise, Bring to Life, Cross-platform, Attention to Detail, Long Term. ⚡️ AVAILABLE FOR NEW PROJECTS ⚠️ Press Invite Button on my page and let's talk.
Itexus LLC 💚
Associated with
Itexus LLC 💚
$1M+
earned
Prashant G.
$20/hr
100% Job Success
$70K+ earned
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Hey! I am a senior mobile app developer with 10+ years of experience building high-quality Android, iOS, and cross-platform mobile applications. I help startups and businesses turn ideas into stable, scalable, and user-friendly mobile apps that are ready for real users and long-term growth. I work across native and cross-platform technologies, including Android (Kotlin), iOS (Swift), and Flutter (Dart). My focus is always on clean architecture, performance, security, and smooth user experience - not quick hacks or AI-generated code. I have strong experience with: -- Building apps from scratch -- Refactoring and scaling existing apps -- API integration and backend communication -- App Store & Play Store deployment -- Ongoing maintenance and feature upgrades 🔹Mobile Development -- Android App Development -- iOS App Development -- Flutter App Development -- Cross-Platform Mobile Apps 🔹Languages & Frameworks -- Kotlin -- Swift -- Dart -- Flutter -- Android SDK -- iOS SDK 🔹 Backend & Integrations -- REST APIs -- Firebase (Auth, Firestore, Push Notifications) -- Third-party SDK & API integration -- Payment gateways (Stripe, in-app purchases) 🔹 Architecture & Quality -- MVVM / Clean Architecture -- Scalable app architecture -- Performance optimization -- Bug fixing & refactoring -- App security best practices 🔹 Deployment & Support -- Google Play Store submission -- Apple App Store submission -- CI/CD basics -- Ongoing maintenance & support 👉 I communicate clearly, work transparently, and deliver production-ready code with proper documentation. Whether you need a new app, improvements to an existing one, or a long-term technical partner, I can support you end-to-end. I love nothing more than creating well-designed and structured apps with clean and readable code. I have experience with all required development tools and with all common web technologies. Also, I have a passion for UX design. If you’re looking for a reliable mobile app developer who delivers clean, scalable, and production-ready apps, let’s talk. Thank you & Best Regards, Prashant | Android & iOS Expert |
ProtoLabz eServices
Associated with
ProtoLabz eServices
$10/hr
100% Job Success
$1K+ earned
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🏅 I’m Individual Freelancer . 🏅 Started programming in 2019. I'm Shilkan Patel, a proficient native Android developer with more than 4 years of experience in Java and Kotlin-based mobile app development. I'm committed to making your ideas a reality and offering support all the way through the creation of your project until it is prepared for launch. Services Provided: 🔰 Design and development of native mobile applications 🔰 Mobile app bug fixes and UI enhancements 🔰 Proficiency in mobile app development using Flutter 🔰 Develop and maintain a mobile application from scratch using Flutter 🔰 Providing support for an agreed-upon period for the developed application 🧑‍💻Programming Languages: 🎗Java 🎗Kotlin 🎗Flutter ⚙️Good skills⚙️ ✅ Kotlin + JAVA (with Coroutines) + MVVM + MVC ✅ View & Data Binding ✅ All permissions in manifest ✅ Analytics & Catalytic ✅ Creating applications for multiple screen resolutions/sizes ✅Understanding and using guidelines, Material Design, common UI/UX patterns ✅ Open-source libraries: Dagger 2, Retrofit , ButterKnife , FFMPEG . ✅ Video processing And reverse engineering ✅Integrations with social networks (fakebook, google, twitter) ✅ Code versioning Bitbucket, GitHub ✅ Flutter I'm dedicated to your happiness and delivering great results. Thank you for considering me. - Shilkan Patel
Shilkan P. has worked .
Muhammad A.
$20/hr
95% Job Success
$30K+ earned
Available now
Offers consultations
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From idea to launch, I help startups and businesses build high quality mobile applications that are fast, scalable, and built for long term success. I specialize in Native Android development with Kotlin and Jetpack Compose, Cross Platform development with React Native, and AI powered mobile applications. Whether you need a brand new app, additional features, bug fixes, performance optimization, or ongoing maintenance, I can help bring your product to life. ✅ Build production ready Native Android apps using Kotlin and Jetpack Compose ✅ Develop cross platform iOS and Android apps using React Native with a shared codebase ✅ Modernize legacy Android applications from Java and XML to Kotlin and Jetpack Compose ✅ Integrate AI features including chatbots, LLM assistants, image generation, text processing, voice features, and intelligent automation ✅ Improve existing Android and React Native apps with clean, maintainable, and scalable code 𝗪𝗵𝗼 𝗜 𝗮𝗺 I'm Muhammad Ahsan, a Senior Mobile App Developer with more than 8 years of experience building scalable mobile applications for startups, agencies, and businesses worldwide. 𝗧𝗼𝗽 𝗥𝗮𝘁𝗲𝗱 • 𝟱.𝟬★ (𝟰𝟲 𝗿𝗲𝘃𝗶𝗲𝘄𝘀) • 𝟵𝟬+ 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 • 𝟭,𝟭𝟱𝟬+ 𝗵𝗼𝘂𝗿𝘀 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸 Over the years, I've developed a wide range of applications including AI powered chat apps, education platforms, fintech products, sports apps, productivity tools, utilities, and e-commerce applications. Every project is built with clean architecture, maintainable code, and a strong focus on user experience. 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵 ✅ Mobile App Development - Native Android using Kotlin, Java, and Jetpack Compose - Cross Platform development using React Native and Expo - Pixel-perfect UI implementation with smooth performance - Custom animations, transitions, and polished user experience - Code refactoring and architecture improvements ✅ Backend & Infrastructure - Firebase, Supabase, PostgreSQL, MySQL - AWS & Google Cloud (GCP) - Scalable backend architecture and API design ✅ Monetization & Payments - Monetization with ad networks like AdMob, Unity, FAN, AppLovin - In-App Purchases & Subscription Systems - Integration with RevenueCat, Superwall, Adapty - Stripe payment integrations (one-time & recurring) - Paywall optimization, pricing strategy & lifecycle handling ✅ Analytics & Growth - Mixpanel, Firebase Analytics, AppsFlyer, Branch - Funnel tracking, conversion optimization & retention strategy - A/B testing and data-driven product decisions ✅ AI & Advanced Features - AI integrations, chatbots & LLM-powered experiences - Voice-based features & real-time interactions - Integration with Gemini APIs & OpenAI APIs - ML-based personalization & automation ✅ Deployment & Scaling - App Store & Play Store publishing (compliance-ready) - CI/CD pipelines and automated deployments - Performance optimization & scalability planning - Long-term maintenance, updates & feature scaling 𝗧𝘆𝗽𝗲𝘀 𝗼𝗳 𝗮𝗽𝗽𝘀 𝗜 𝗯𝘂𝗶𝗹𝗱 • AI Applications • Fintech • E-Commerce • Education • Healthcare • Sports • Chat and Messaging • Productivity • Business Applications • Utility Apps 𝗪𝗵𝗮𝘁 𝘆𝗼𝘂 𝗴𝗲𝘁 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗺𝗲 ✔ Clean, modular, testable code that stays easy to expand ✔ Clear communication with regular progress updates ✔ Reliable delivery with realistic timelines ✔ A focus on quality, performance, and user experience My expertise includes Kotlin, Java, React Native, Swift, SwiftUI, and MVP Development, building secure, scalable, and high-performance mobile applications with clean UI/UX and robust architecture. I provide end-to-end Mobile App Development services, including Firebase Integration, REST API Integration, User Authentication, Push Notifications, In-App Purchases, Payment Gateway Integration, Stripe Integration, Google Maps API Integration, Real-Time Chat, App Deployment, Mobile App Performance Optimization, and long-term maintenance to deliver production-ready Android, iPhone, and iPad applications. If you're looking for a reliable Mobile App Developer who can take your idea from concept to a polished product, I'd be happy to discuss your project. I look forward to working with you. Warm regards, Muhammad Ahsan -------------------------------------------------- Senior Android App Developer, Android App Development, Kotlin Developer, Java, Jetpack Compose, React Native Developer, Cross-Platform App Development, Mobile App Development, Mobile App Developer, iOS App Development, MVVM, Clean Architecture, REST API Integration, Retrofit, Firebase, Firestore, Room Database, Push Notifications, FCM, User Authentication, Google Play Deployment, App Store Deployment, In-App Purchases, Payment Gateway Integration, Stripe, PayPal, Google Pay, Google Maps API, Real-Time Chat, Third-Party SDK Integration, AI Chat App, ChatGPT API Integration, Fintech App, Payment App, E-Commerce App, Education App, Sports App, Chat App, Productivity App
Muhammad A. has worked .