Hire the best Kotlin Developers in Zagreb, HR

Check out Kotlin Developers in Zagreb, HR with the skills you need for your next job.
  • $100 hourly
    Are you tired of low-quality code, over-billed hours, missed deadlines, and extremely buggy features? Want to work with an experienced engineer who is as passionate about your project as you are and can seamlessly translate your ideas into an app? Let’s chat! Who am I? My name is Dinko, an expert mobile & TV solutions engineer. My goal is to create the app you are dreaming about with the least amount of friction possible. I cannot help everyone, but you may be a right fit if you think: 🔸 ”I have a brilliant idea, but I don’t know where to start” 🔸 “My product is already established, I need someone with deep technical knowledge to take it to the next level” 🔸 “The app is full of bugs, I want them gone” 🔸 “This seems to be a job for an experienced software architect so I can scale later” 🔸 “I want someone who can communicate effectively, work alone and make this happen” Working with me will: ✅ Ease your mind when it comes to code quality ✅ UI will be pixel-perfect and seamless ✅ The app will have minimal bugs ✅ Communication will be clear and frequent ✅ Robustness and scalability will be achieved by using the best architecture approaches and an appropriate amount of automatic tests ✅ Speed of development will be at peak level by leveraging the latest mature technologies and tools I’m not everyone’s cup of tea, so here are some signs we might not be a great fit: ✖ You have a tight budget and are looking for a cheap developer ✖ You like to push people to work faster and then complain about the quality ✖ You like to have 100% control over every detail of the project I’ve previously been engaged with projects in the following domains: E-commerce, fitness apps, social media, and OTT. Services I provide: ➡️ Native app development for Android using Kotlin and iOS using Swift ➡️ Hybrid app development using Flutter and Dart ➡️ Backend development using Firebase Ready to know what it feels like to work with an engineer who truly cares about your success?
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Coroutine
    Retrofit
    Domain-Driven Design
    RESTful API
    Android
    Flutter
    Unit Testing
    Git
    Azure DevOps
    Android Room Persistence
    Behavior-Driven Development
    Espresso
    JetPack
    Firebase
  • $45 hourly
    Hello! I'm Yuri, a Flutter developer with a passion for crafting mobile applications. Since 2018, I’ve been building user-friendly and efficient apps for some of the largest companies in Europe, as well as my own innovative projects. My Skills and Expertise: • 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: Proficient in Java, Kotlin, and Dart • 𝗖𝗹𝗼𝘂𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Experienced with REST, AWS, and Firebase for seamless app integration, including Authentication and Cloud Messaging • 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗦𝘆𝘀𝘁𝗲𝗺𝘀: Skilled in implementing online payment options like Google Pay and CloudPayments • 𝗦𝘁𝗮𝘁𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: Expertise in using Redux and BLoC architecture for managing app states effectively • 𝗔𝗣𝗜𝘀: Proficient in integrating with 3rd-party APIs and working with GraphQL for backend communication • 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗣𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗶𝗻𝗴: I create engaging user interfaces using Sketch and Apple Motion, ensuring a visually appealing user experience • 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: Familiar with UI & unit testing using Espresso, Mocktail and Flutter Tests, implementing automated deployment pipelines 🤝 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? I pride myself on delivering quality work on time while maintaining open communication throughout the project. My diverse experience in developing apps for various sectors—including adult content, health trackers, education, AI, web3, and location tracking—enables me to tackle different challenges effectively. 🎓 𝗔 𝗕𝗶𝘁 𝗔𝗯𝗼𝘂𝘁 𝗠𝘆 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱: I hold a Bachelor’s degree in Software Engineering & Radiotechnics. My achievements include 2nd place in the VK Hackathon 2018 and developing a popular app on Google Play with 4.5 & 10k+ downloads. I have more than 20 five-star reviews on different freelance platforms. 🚀 𝗟𝗲𝘁’𝘀 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗲! I'm seeking long-term projects where I can make a real difference. If you need a dedicated Flutter developer to bring your ideas to life, let’s connect! I’m excited to help you achieve your goals.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    AWS Lambda
    API
    CI/CD
    FlutterFlow
    Firebase
    REST API
    Android SDK
    Java
    Dart
    Swift
    Flutter
    Redux
    iOS
    Android
  • $35 hourly
    I'm a programmer with 20+ years experience. I'm also an English/Croatian translator, writer, music composer and guitar player.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android Studio
    TCP/IP
    Music
    UI Graphics
    Android Room Persistence
    UI Animation
    SQLite Programming
    Java
    C++
    Android
    Retrofit
    Algorithm Development
    Serial Port Interfacing
    English
  • $70 hourly
    I’m a developer with experience in building mobile apps for medium and lerge sized businesses. I’m experienced in Swift, ObjectiveC, C# I’ll fully project manage your brief from start to finish Regular communication is really important to me, so let’s keep in touch!”
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Visual Basic
    SQL
    Git
    Apple Xcode
    RxSwift
    Swift
    Objective-C
    JavaScript
    Java
    TypeScript
    PostgreSQL
    C++
  • $49 hourly
    Hi everyone, I'm Ivan – your go-to Senior Mobile App Developer! With a Master's Degree in Computer Science, I'm here to supercharge your app ideas! 🚀 Why Choose Me? ► 10+ years of Android development experience. ► 8+ years crafting iOS masterpieces. ► 4+ years of hybrid app wizardry. ► Proficient in Flutter, Kotlin, Xcode, Swift/SwiftUI, Android SDK, and more! To date, I've successfully created and launched over 100 applications, all earning excellent ratings and delighting users. I've worked across various sectors, including: 💰 Financial Services 🏥 Healthcare / MedTech 📊 SaaS 📚 Education 🌐 Internet of Things 🚚 Logistics and Transportation ❤️ Social and Dating Apps …and the list goes on! 🚀 I've collaborated with international giants like Sony Mobile Communication, Y Combinator startups, and visionary Kickstarter entrepreneurs. This journey has equipped me with invaluable insights into market trends, startup concepts, and thriving in highly competitive environments. Why Clients Choose Me as Their 5-Star 🌟 Developer: ▪️ Crafting clean, polished, and well-documented code. ▪️ Relentlessly chasing away bugs for smooth app performance. ▪️ Delivering projects on time and within budget. ▪️ Excelling in clear and effective communication. ▪️ Prioritizing client satisfaction in every project. ▪️ Upholding honesty and transparency as core values. 🛠️ My applications come packed with impressive features: ▪️ Instant Messaging (IM) ▪️ Social Login ▪️ QR Code and Barcode Scanning ▪️ Signature Recording ▪️ GPS Positioning and Mapping ▪️ Integration with Web Services (REST, POST, SOAP) ▪️ Seamless Mobile Ads Integration ▪️ Video and Audio Recording ▪️ Photo Capture ▪️ Social Media Sharing Integration ▪️ Local Database Management ▪️ Cloud Integration ▪️ Bluetooth (BLE) Functionality ...and much more! 🚀 Ready to turn your app idea into reality? Let's chat! 🤝 ___________________________________________________ Related keywords: Android developer, iOS developer, Web developer, Mobile developer, Kotlin, Xcode, Swift, Android SDK, Android Studio, Java, Git, SVN +, Flutter, Flutter Developer, GPS, Bluetooth, Native, Hybrid, Hybrid Mobile Development, JavaScript, React, Next.js, TypeScript, WordPress, React Native, Node.js, Angular, Front end development, HTML/CSS/JS, Back end development, Node.js, AWS, Firebase, Full-stack development, Smart TV app development, Android TV app development, Apple TV app development, SaaS expert, IoT, B2B, B2C, Full-cycle product development
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Mobile App Design
    WordPress
    Web Design
    UX & UI
    Android SDK
    Apple Xcode
    iOS Development
    Mobile App Development
    Swift
    Node.js
    React Native
    Firebase
    JavaScript
    Flutter
    Android App Development
  • $35 hourly
    Highly skilled & Experienced with Mobile Developer here! I have developed a wide range of native mobile apps for Android (Mobile, Tablet) & iOS (iPhone, iPad, Apple Watch) platform, including apps for startup companies, small & large businesses. My current area of interest is complete management of a mobile app development project from designing to publishing on app store. Also I have strong experience with React Native and Flutter development for 5 years and many developed projects and deployed google store and app store. -- Mobile application Background -- - Developed two apps which were covered by CNN - Android: Java, C++, JNI, NDK (Mobile & Tablet) - iOS: Swift, Objective-C, Cocoa-Touch (iPhone, iPad & Apple Watch) - Recat Native, Expo, Flutter, Inoic - Payment Gateway: Braintree & In-App Purchases - 3rd party APIs like Facebook, Twitter, Linkedin, Instagram, Youtube, Pinterest, Foursquare - Google Map, Geolocation, GPS, Open Street Maps, Navigation - Ad platforms: iAd, Adwirl, Revmob, Admob, Chartboost, Tapjoy, Flurry, Testflight - Speech recognition, text-to-speech, Siri, OpenEar - Video/audio/image processing: OpenCV, Pitch Control - Payment Gateways (HDFC, Payu, Instamojo, Razorpay, Stripe...) I am very well versed with development using version controls including SVN, Git, Bitbucket, etc. and Project Management/Bug Tracking Tools like Basecamp, Asana, Trello, Zoho, Mantis, Bugzilla, etc. Full time available and will work 40 + hours per week. Thanks for review.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Java
    React Native
    iOS
    Node.js
    Android
    Flutter
    GraphQL
    React
    Firebase
  • $30 hourly
    I am a dedicated mobile app developer based on Flutter, ReactJs & ReactNative frameworks. Having more than 5+ years of experience in working on these technologies. I can work on IONIC 3 and IONIC 4 (latest version), ReactJS for Hybrid apps & ReactNative for native apps. I also work on Wordpress, Laravel, MEAN STACK & Custom PHP to create web services & backends. I can also work with AWS API gateway to create web services using LAMBDA function and then connect them from the App. My strength is the dedication to my work and having the ability to keep learning the mobile app development. Contact me / Hire me for the following skills: - IONIC based Hybrid mobile app development (I can really create you seamless solution across the devices) - React JS Apps - ReactNative Apps - HTML5 / AngularJs development - Web Services Creation and Planning - Help in publishing apps on AppStore And PlayStore. - AWS Web services creation. - MEAN STACK Development - Creation of APIs for Apps - Blockchain & Dapps.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    RESTful API
    Model View ViewModel
    Flutter
    Mockito
    Butter Knife
    Swift
    Kendo UI
    React Native
    Xamarin
  • $33 hourly
    I’m a software developer who is interested in backend development on Kotlin mainly in web development.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    API
    API Documentation
    API Development
    SQL
    Spring Boot
    Web Development
    Web Application
    Product Development
    International Development
  • $20 hourly
    Hello Upwork. Looking for a professional Full Stack developer? I am a Full Stack developer with 6+ years of experience. My experience includes both development and design, I have experience in Web/Mobile app development and Software development. My usual workflow with clients: - At first, I carefully listening, what the client needed. - then asking questions, to fully understand what he needs. - at the end of each working day - I always make a git push and prepare a day report with screens and details of current progress + asking questions that appear on this day. I have proven myself as a true team player, I always try something new, I try to summit every top of this industry and it will be sublime and fun to work on this platform. You can find my overall skills down below. • Java, Spring, Hibernate, Grails • Ruby, Rails • WordPress, Elementor, Divi • Shopify, Woocommerce, Bigcommerce • Node Js, Express Js, Meteor Js, • React Js, React Bootstrap, ToolBox • PHP, Laravel,Symfony, CodeIgniter • JavaScript/JQuery, Typescript • Python, Django, Flask, Falcon, Dash,Bottle • Azure DevOps • Oracle • C#, Umbraco • ASP .net Thank you for your time, I am sure we will create many successful project. Looking forward to our cooperation. Mary.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android App Development
    iOS Development
    MongoDB
    Java
    Laravel
    JavaScript
    React
    Node.js
    PHP
    Vue.js
    Bootstrap
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