Hire the best Kotlin Developers in Ukraine

Check out Kotlin Developers in Ukraine with the skills you need for your next job.
Clients rate Kotlin developers
Rating is 4.8 out of 5.
4.8/5
based on 510 client reviews
  • $45 hourly
    If you have an Idea, I can change your Idea to an Awesome App! Hello, I am a professional Android native app developer. I am having 6+ year of experience developing native android apps. I always use "Best Practices & new technologies" in my practice. Please note an important point. In addition to the quality application, the product of my activity is a very high quality code. In my work, I use most of the known patterns (MVVM, MVP/MVC, etc.), which in turn extends the life of your project for many years to come. Thus, it greatly simplifies the maintenance of the project or the addition of new functionality in the future. Your android apps will be made using following tools/technologies: Android Studio Kotlin/Java ( whichever you want ) Jetpack Compose Navigation component Other of the tools you can see in the tab "Mobile App Development" . I can also provide advice for your ideas. My hourly rates are not accurate. Because the real price may depend on your needs, time and resources.
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    Trello
    Jira
    Concurrent Versions System
    XML
    Android SDK
    RESTful Architecture
    In-App Advertising
    Android
    Android Studio
    Java
    Retrofit
    Native App Development
  • $38 hourly
    Hi 👋, I'm Pavlo - I am the leader & co-founder of a fascinating senior-level development team. More than 7️⃣ years of experience in end-to-end development. From the country of steel hearts - Ukraine 🇺🇦 📌 𝐒𝐨𝐦𝐞 𝐩𝐨𝐢𝐧𝐭𝐬 𝐈'𝐦 𝐩𝐫𝐨𝐮𝐝 𝐨𝐟: 🏆 being CTO of the startup that was featured by Apple(Hapday); 🧑‍💻 More than 40 projects were successfully released to AppStore / Google Play Market; 📈 Creating projects with 1kk MAU, 99.9% crash-free and > 100% ROI; I am an IT specialist with cross-area knowledge including but not limited to different types of Mobile applications for iOS and Android platforms. My experience allows me to achieve the highest production standards. Even for MVPs, we are using the best technologies and practices that help to achieve the highest benchmarks. 𝐘𝐨𝐮 𝐜𝐚𝐧 𝐠𝐞𝐭 𝐭𝐡𝐞 𝐟𝐨𝐥𝐥𝐨𝐰𝐢𝐧𝐠 𝐬𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝐟𝐫𝐨𝐦 𝐏𝐨𝐥𝐲-𝐭𝐞𝐜𝐡: • Requirement analysis with all the documents: HLR, Tech specification, architectural design; • UI/UX services including but not limited to Prototyping, Wireframing, audit, UX, UI, and User journey; • High-loaded Web development; • Native mobile development, both from scratch and legacy support; • DevOps services on AWS; • Python&Django for backend/CRM development; We are not selling developer/team/solution. We sell our expertise, having a goal to become a partner for your business. Poly-tech services are not limited to just development or design, our focus is a global vision within the entire SDLC cycle, where we can provide all the services starting from BA until a successful market launch and upcoming user acquisition. 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐨𝐮𝐫 𝐭𝐞𝐚𝐦 𝐰𝐨𝐫𝐤 𝐰𝐢𝐭𝐡: • Swift for iOS; • Kotlin for Android; • Python&Django for backend/CRM development; • Firebase, Firestore, Authentication, Cloud Functions; • REST, Websocket, Push Notifications, Kafka, Celery, Lambda; • AWS (EC2, S3, EB, Route53, RDS) 🔥 Build the entire solution from scratch with us. Our team would be your partner that's highly involved in your business process and helps to increase not only tech expertise but grow your project in general until TOP 1 is achieved. Click "Invite" and start feeling the difference🔥
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    Secure SDLC
    Twilio API
    Firebase
    Django
    Python
    Swift
    Android
    iOS
    UX & UI
    Requirement Analysis
    Web Development
    SaaS Development
    CRM Development
    Mobile App Development
  • $45 hourly
    ⭐⭐⭐⭐⭐"Ruslan has incredible partnerships which allows your project to proceed smoothly without any hiccups. Ruslan is extremely easy to accomodate any changes, and is very patient with all the backs and forths. The project dragged on longer, but the freelancers were patient and still went on to make all relevant changes until the project was successfully delivered. Ruslan is always online; I mean always !!! and so he responds nearly instantly to any messages, which is very important when you have just started your first project and anxious about these things!!!" I'm the Top Rated Plus MVP Developer on Upwork with great communication routine and numerous 5-star reviews, including overly positive feedback. I've developed numerous MVPs and made massive performance improvements for my clients in different business domains and including the following to illustrate some of them: ☑️ Education Apps ☑️ Delivery Apps ☑️ Fitness Apps ☑️ Dating platforms ☑️ Online Booking Apps ☑️ Tourism Apps 
☑️ Uber-like-Apps ⭐ Here's what I can bring to your project ⭐ ✅ Delivery of brand & Logo designs, as well as identity kit (letters, colours, patterns, fonts etc) ✅ Delivery of a comprehensive UI/UX design for all app screens, demonstrating a comprehensive user flow ✅ Delivery of clickable prototype for the app, reviewed by MVP architect ✅ Delivery of comprehensive App Version 1.0 ✅ Development of an admin panel and landing page for marketing purposes ✅ Listing on stores and further maintenance. ⭐ Why you should choose me over other freelancers ⭐ ☑️ Client Reviews: I focus on providing value to all of my clients and earning their TRUST. ☑️ Over-Delivering: this is core to my work as a freelancer. My focus is on giving more than what I expect to receive. I take pride in leaving all of my clients saying "WOW" ☑️ Responsiveness: being extremely responsive and keeping all lines of communication readily open with my clients. ☑️ Resilience: reach out to any of my current or former clients and ask them about my resilience. For any issue that my clients face, I attack them and find a solution. ☑️ Kindness: one of the main aspects of my life that I implement in every facet. Treating everyone with respect, understanding all situations with empathy, and genuinely wanting to improve my client's situations. 🏆 Reviews and feedback from entrepreneurs and innovators that decided for me🏆 The client reviews below describe the quality of work and value that you can expect from working with me. "This is the second time I’ve worked with Ruslan and his team and they completed the Job with patience, professionalism and was within budget. Will definitely use again." "Working with Syject has been a pleasure. This was our second engagement with them and I am sure it will not be our last. Their work is always high quality, efficient and quick. Communication with the Syject team is good and they comport themselves professionally and personably. When we were not sure just what we needed, they are able to bring their creativity to the problem and suggest great solutions." "Professional flutter developer, highly recommended. All tasks on the project completed well. I liked communication and involvement. In addition to skilled and professional programming, he also suggested ideas about UX and UI. Good work, will definitely work in the future if I need flutter developer again."
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    Firebase
    Web Design
    MongoDB
    Java
    Dart
    Map Integration
    Unity
    Social Media Account Integration
    Game
    Figma
    Flutter
    Android
    Tablet
  • $60 hourly
    👨‍💻 Howdy, I'm a CTO and Founder at Nonamedigital. Looking for 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 Development? I got your back! We have got for you 𝗮𝗹𝗹-𝗶𝗻-𝗼𝗻𝗲 𝗯𝗼𝘅𝗲𝗱 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 that combines the most important types of mechanics: staking, vesting, drop, craft, loot boxes and metadata modification. 🔥 5-star client review with recommendations ⏳ 9 years of production experience in the web3 business My expertise is delivering world-class applications to tech startups and small/medium businesses. I can provide a full-cycle solution starting with the idea or an existing project with legacy code. My main interests and expertise are in the creation of P2E games like: 📲 Latest projects; Undeads, Fitburn I can help you with: ✅ MVP development from concept to happy users ✅ Agile methodology process optimization at every stage of development. ✅ Managing your in-house developers, enhancing the team, and setting up an efficient development process ✅ Remote CTO on-demand and covering all technical aspects of your business ✅ Migrating to new technologies and refactoring the existing application ✅ Brainstorming and Troubleshooting about increasing key business metrics in mobile apps As part of the scoping process, I am able to develop wireframes and specifications prior to getting started. Each time, I collect app details in order to understand the logic of the application and to provide an in-depth estimate, which later serves as a backlog for the project. 💡 In this approach, all work is specified, so it's easy to support and scale. The timeline and budget are predicted, and all work stays within the budget. 𝗢𝘂𝗿 𝗸𝗲𝘆 𝗮𝗿𝗲𝗮𝘀 𝗼𝗳 𝗲𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 🔒 You can run your NFT, a DeFi asset, or a crypto exchange with us. We'll assist you in determining which path will yield the greatest profit. You may sit back and relax while your project generates revenue for you. 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 🏥 We assist healthcare innovators by connecting them with the most valuable resource available: industry leaders. 𝐅𝐢𝐧𝐓𝐞𝐜𝐡 💰 We provide dedicated development teams to assist startups and tech titans in delivering meaningful customer experiences and increasing earnings by driving digital transformation in the financial industry. 𝐞𝐂𝐨𝐦𝐦𝐞𝐫𝐜𝐞 🛒 We will create a website or an app to market what you need to offer. We know that people prefer fast and simple interfaces that allow them to shop with ease. 🛠 My mobile technical expertise covers the solutions below: ▪️ Front-end: React.js, React Native, Next.js, JavaScript, Tailwind CSS, SCSS, Sass. ▪️ Back-end: Node.js, Express, Nest.js, Microservices. ▪️ Databases: MongoDB, MySQL, PostgreSQL ▪️ Blockchain: Ethereum, Polygon, Avalanche, TON, Near. ▪️ Cloud Services: Azure, AWS, Google Cloud. ▪️ DevOps: Docker, Kubernetes. 💌 Don’t hesitate to send the invitation to your job post or book a consultation with me. I'm always looking forward to engaging opportunities! 💙💛
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    Vue.js
    CSS
    HTML
    Next.js
    Reactive Programming
    iOS
    JavaScript
    Swift
    Angular
    React
    C#
    C++
    Java
    React Native
  • $40 hourly
    I am an upwork Top-Rated full-stack iOS/Android developer with over 6 years of robust experience, having successfully crafted a diverse range of applications across industries such as Social Networking, Sports, Entertainment, Finance, and Health. ✅ Services I Provide: iOS Application Development Android Application Development ✅ Programming Languages and Frameworks: - iOS: Swift, Objective-C - Android: Kotlin, Java - Cross-Platform: Flutter, React Native, Ionic ✅ Key Stages of Mobile App Development: 1. Planning and Design: - Thoroughly understand business goals and target audience. - Develop a user-centric design prioritizing seamless navigation and intuitive interactions. - Create wireframes and prototypes for visualizing functionality and user interface. 2. Development: - Utilize robust programming languages and frameworks for stability and scalability. - Implement advanced features and integrations for an enhanced user experience. - Adhere to industry best practices and security protocols to safeguard data and privacy. 3. Testing and Quality Assurance: - Conduct rigorous testing across various devices and operating systems. - Identify and resolve bugs for seamless performance. - Gather user feedback for refining the app and optimizing usability. 4. Deployment and Launch: - Prepare app submissions for respective app stores. - Ensure compliance with app store guidelines and policies. - Implement effective marketing strategies to drive app downloads and engagement. I am dedicated to delivering high-quality mobile applications that align with your business objectives and resonate with your target audience.
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    JetPack
    OpenAI API
    Firebase
    Apache Cordova
    Ionic Framework
    FlutterFlow
    Flutter
    React Native
    iPhone
    Java
    Android
    iOS
    Objective-C
    Swift
  • $35 hourly
    I am a full-stack mobile application developer who have - Ability to develop unique, cutting edge applications for different handset and user requirements - In-depth knowledge of industry practices and application development protocols - Knowledge of application testing, debugging and troubleshooting - Ability to work for long hours without losing patience and enthusiasm - Passionate to update my knowledge and skills though continuous self learning
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    Java
    Android
    Swift
    Objective-C
    iOS
  • $35 hourly
    With a passion for technology and solving complex problems, I am a dedicated Full Stack Web Developer and Machine Learning/AI engineer. My strengths lie in my programming skills, ability to quickly grasp new technologies, and understanding of both frontend and backend aspects of web development. Also, my interest in Artificial Intelligence has led me to specialize in machine learning algorithms, deep learning and data science. Technical Skills - Programming Languages: Python, JavaScript (ES6+), Java, C++, C#, SQL. - Web Development: Node.js, Asp.NET, Django, React.js, AngularJS, Express.js, HTML5, CSS3, Bootstrap. - Databases: MySQL, MongoDB, PostgreSQL. - Machine Learning/Deep Learning Tools: TensorFlow, Keras, PyTorch, Scikit-Learn. - Data Science: Pandas, NumPy, SciPy, Matplotlib. - Version Control/Git: Good understanding of Git commands, and experience with merge conflicts, rebasing, and other such events. - Deployment Tools: Docker, AWS, Google Cloud Platform, Heroku. I am always eager to learn more and take on challenging projects because I believe that the best way to grow is to step out of your comfort zone. My ultimate goal is to use technology to solve important problems and have a positive impact on the world.
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    React Native
    Next.js
    pandas
    PyTorch
    Keras
    TensorFlow
    ASP.NET
    Angular
    React
    Node.js
    C#
    Python
  • $60 hourly
    Developer with 20+ years of experience. Had projects in different industries: from enterprise, web & mobile projects to game development. Also worked on big projects in developing complex product management systems / dashboards. Highly motivated, perfect result-oriented, reliable. Attentive to details, self organized. I am an individual full-stack engineer with extensive experience. Technical skills: ✔️ Responsive HTML5, CSS3 from PSD / Invision / Figma / XD ✔️ SASS / SCSS / Bootstrap ✔️ JavaScript: Browser Scripts / Plugin Usage ✔️ Experience with ReactJS (see portfolio), React Native, Vue.js ✔️ Node.js ✔️ Java ✔️ Kotlin ✔️ Semantic coding / BEM methodology ✔️ PSD to HTML / Invision to HTML / PSD to WordPress ✔️ Experience with WordPress (+WPML), Pimcore, ShopWare ✔️ Tools: Git, Gulp What you can expect from me: - Creating pixel-perfect responsive pages - Writing maintainable, structured and well-commented code - Able to work up to 30 hours per week - Can work in an unsupervised environment - Good spoken/written English I like working on projects that challenge me because I have an ever growing need to discover something new, they make my life more interesting. I hope we can have effective cooperation regarding these principles.
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    Sequelize
    API Development
    ExpressJS
    Node.js
    React
    JavaScript
    TypeScript
    React Native
    Android
  • $50 hourly
    I am a Top-rated developer to bring all your product ideas into a success story. My experience in mobile software and web development field is ready to serve your business. I was working on Healthcare and Fitness apps, social and e-commerce solutions. There is a lot of experience in (but not limited to) Finance, Education, Travel and other entertaining and business apps. If you need a mobile app or website I'm happy to provide you with the solution. I have an extensive background in leading and driving all phases of software projects and client engagements with the largest brands as well as with tiny startups. Key facts: • Good references and happy clients, • Successful apps on the marketplaces, • Software Development Experience – over 15 years • Mobile Software Development • Web Development Software development is my passion. I achieve high quality of products with proven software development process. I can work both as individual and as a part of software agency which gives you bigger opportunities for scaling the work. Over the time has built various complex solutions for a diverse range of businesses and industries (Health&Fitness. IoT, Finances, Retail, IT management, e-Commerce, Marketing&Advertising, Transport&Logistics, Media&Publishing, Social networks, Entertainment). Sergey and his team can guarantee the highest quality of our services, quick turnaround, professional communication and 24/7 Skype/email support for our clients. Please get in touch with me for our references or to request a quote.
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    Health & Fitness
    Apple Watch
    Front-End Development
    Healthcare IT
    Swift
    React
    PHP
    iOS Development
    watchOS
    React Native
    HealthKit
    Android
    iOS
  • $40 hourly
    I am lead software engineer with more than 9 years of development experience and more than 40 projects successfully released. I have a solid background in OOP concepts and modern software architecture approaches. I worked on projects from different business areas and different team sizes. First of all I do my best for everybody involved in a project to understand the problem that the software should solve. It brings a lot of benefits to both business and development sides as everybody has a clear vision of what to do. Some technologies I am familiar with are listed below. Mobile - Android(Java/Kotlin), ios(Objective C/Swift), Flutter. Web(back-end) - Spring, SpringBoot, Node js, AWS. Database - Sqlite, MongoDB, MySQL, Postgresql. APIs, services and integrations - Facebook API, Google APIs(Places, Drive, Fit, Plus, Nearby, etc), Firebase, NDK, Stripe, Square, Nethunt and a lot of other.
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    iOS SDK
    iOS Development
    Flutter
    TypeScript
    Dart
    Node.js
    MongoDB
    Objective-C
    Swift
    Android
  • $80 hourly
    🌍 Currently working from Europe ✅ 10+ years of experience in different technologies. 🚀 Application from idea to release ⌨️ Post-release maintenance and support 📱 30+ successfully developed applications ✅ Upwork Verified Top Rated Plus Developer ⭐⭐⭐⭐⭐ rating Welcome to my profile! With over a decade of dedicated development experience, I specialize in creating cutting-edge applications that deliver user-friendly, engaging, and performant experiences. My proficiency in product development enables me to bring any app idea from concept to launch seamlessly. My approach is collaborative and transparent, ensuring that communication is clear and expectations are aligned from the outset. I pride myself on my ability to solve complex problems and adapt to new challenges, which is reflected in the diverse range of projects in my portfolio. Clients appreciate my commitment to quality and attention to detail, whether I'm working on innovative startups or established enterprises. My goal is to not only meet but exceed your mobile app development needs, providing post-release support to ensure your application evolves with your business. I am Upwork Verified and have a track record of success, with consistent five-star feedback. If you're looking for a reliable, skilled, and proactive mobile developer, let's connect and bring your vision to life.
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    Project Management
    FinTech
    Dart
    User Authentication
    Smartphone
    Chat & Messaging Software
    JavaScript
    Swift
    Flutter
    Java
    TypeScript
    Android
    iOS
    Native App Development
  • $45 hourly
    Hey, thanks for dropping by! 👋 Let's skip the lengthy introduction and jump straight to discussing how I can help you with your project. Sound good? 😉 I'm a Senior Android Developer and Tech Lead at Onix-Systems Team, with over a decade of experience under my belt. My expertise lies in developing Android apps for various industries, including: ➡️Travel ➡️Fintech ➡️Sport/Fitness ➡️Social Media ➡️Chats ➡️Real Estate ➡️E-commerce. To achieve the best results, I use top-notch technologies such as: ✔️ Kotlin ✔️ Java ✔️ Retrofit ✔️ Koin ✔️ Dagger2 ✔️ Fresco ✔️ Picasso ✔️ Glide ✔️ Koil and more. I'm also familiar with various frameworks, libraries, DBMS, VCS, CI/CD, and code review tools. Apart from my technical skills, I also possess a strong understanding of UI/UX, web analytics, Agile methodologies, and the full software development lifecycle. I'm always on the lookout for new technologies and ideas to boost development efficiency and create innovative applications. Lastly, our team consists of UX/UI designers, QA testers, and DevOps engineers who can offer valuable assistance to your project development. So, let's connect and discuss how I can help bring your project to life. Looking forward to chatting with you soon!
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    Android App
    Android
    Mobile App Development
    Java
    Android App Development
    Android NDK
    Android UI Design
    Android SDK
    Mobile App
  • $40 hourly
    Hello everyone, I am the CEO of Ein-des-ein, Top Rated Upwork full-cycle development company! Our expertise includes: - Web development (front-end + back-end + QA) - Native iOS/Android development - Complex UX/UI design - Dedicated teams (Outstaffing) - Branding & Graphic design READ MORE⬇️ INDUSTRIES - HealthTech, Sport & Fitness - Environment - Logistics & Food Delivery - E-Commerce - Construction - EduTech & Social Networking - SaaS and more! Our team is experienced in working with the following TECH STACK (but not limited to it!): JavaScript, PHP, including Vue.js, React.js, plane JS, PHP Symfony, PHP Laravel. CMS systems: WP, Drupal, OpenCart, Shopify, Woocommerce, Magento. Apps: Swift, Kotlin. Our proven track record for delivering projects on time and within budget ensures our clients get the most out of their applications, websites, SaaS platforms and other products. Let's arrange a call with me and my team to discuss your idea! Take a look at our PORTFOLIO of projects we’ve developed. We look forward to working with you soon! (buzzwords: Node.js, Node.js developer, .Net development, Java, javascript, javascript developer, js developer, js development, web developer, web development, e-commerce, web design, website creation, react.js, bootstrap, Swift, Kotlin, SQL, MySQL, HTML, CSS, database administration, frontend, frontend developer, backend, backend developer, full-stack developer, restful, restful web services, micro services, rest api, mobile api)
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    Java
    Mobile App Development
    Node.js
    Web3
    Swift
    ASP.NET
    React
    Typography
    WordPress
    User Interface Design
    Graphic Design
    Mobile UI Design
    Adobe Photoshop
    Adobe Illustrator
  • $75 hourly
    11+ years of developing Android applications, leading teams, and delivering successful products. I provide high-quality mobile, Android TV, Android Auto, and Android Automotive OS apps using the latest tech stack like Jetpack Compose, MVVM, Hilt, Room, and ExoPlayer. Professional skills and technologies: • Fluency in Java and Kotlin • AndroidX/JetPack, Compose, Leanback • MVVM/MVP/MVI • Experience in RESTfull APIs, OAuth • SQLite/Room, Realm • ExoPlayer, optimization and performance tuning, offline playback, caching • Creating media apps for Android Auto and Android Automotive OS • Security/Encryption, biometric • Firebase Auth/Cloud functions/Database/Storage • Troubleshooting performance problems Knowledge of best practices for developing secure software, mobile application vulnerabilities, and how to prevent them. Experience in reverse engineering, static, and dynamic analysis of Android apps: • Reverse engineering private APIs • Modification without source code • Bypass SSL certificates pinning • Working with ROOT, Magisk • Xposed/LSPosed modules development • Creating Frida scripts • Build automation tools for 3rd party apps
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    Reverse Engineering
    Android Room Persistence
    Android Debug Bridge
    SQLite
    Realm Database
    Firebase
    Git
    Google Maps API
    Google Play
    JetPack
    Android
    Android App Development
    Java
    Android SDK
  • $40 hourly
    I am a mobile developer with about eight years of experience. I took part in several projects, such as an application for venues and special offers search, a business application for traders, an application for a delivery company, an application for taxi drivers, a live video broadcasting application, audio/video player, downloaders, web-browser. My primary skills are: Flutter, Java Core, Android, Swift, iOS, Design Patterns, Multithreading, Networking, App Core, RxJava, SQL, SQLite, REST, JSON, Google API, Social Networks API, Fragments, XML, Kotlin, Admob, monetization, Proxy, VPN Services
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Payment Processing
    Google Maps API
    SQLite Programming
    Mobile UI Design
    GUI Design
    Map Integration
    User Authentication
    Swift
    iOS
    Android
    Java
  • $40 hourly
    10+ Skills | 15+ Years experience in Engineering field Android, Java/Kotlin/Python/C/SQL, UI/UX, Git, GitHub/GitLab/Bitbucket, Android Studio/IntelliJ IDEA/Eclipse, Trello/GitLab board, SOLID Firebase and much more - developing projects from scratch (setup, architecture, features development) - deveopment for embended devices - support legacy projects - integration of new technologies - working with Google guidelines I can just do any job for you, no matter how difficult the task you describe I do
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    Firebase
    Coroutine
    Retrofit
    Android Studio
    Java
    SQLite
    Android App Development
    Mobile UI Design
  • $50 hourly
    💪 15+ Skills and Technologies | 💼 6+ Years experience My mission is to shape the future of mobile applications through cutting-edge development! More than just code, I bring: 🔹Co-ownership mindset: Your success is mine. We'll partner closely, ensuring clear communication and exceeding expectations. 🔹Mobile mastery: Native apps that shine, bug fixes that disappear, and support that delivers peace of mind. 🔹Problem-solving superpower: Complex challenges? Bring them on! I thrive on finding creative solutions that bring your vision to life. 🔹AI edge: Want to infuse your app with intelligence? I'm adept at integrating AI to optimize results and push boundaries. 🔹Third-party pro: Seamless connections to the services you need, flawlessly integrated and ready to work for you. 📌 Don't hesitate to invite me at least for the best consulting
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    AI Mobile App Development
    API
    Bluetooth
    Bluetooth LE
    AI App Development
    Google Analytics
    API Integration
    In-App Advertising
    Android App Development
    Canvas
    Core Bluetooth
    Google APIs
    Android SDK
    Firebase
  • $32 hourly
    If U value a product-oriented mindset & honest advice on the fastest 🚀 & most budget-friendly 💸 development — I've got you covered! I'm the PO & CEO at Fulcrum.Rocks, where everyone is all about crafting usable & scalable apps for startups & growing companies worldwide (yes, no matter the time zone). 👥 20M users worldwide 🎯 TOP dev partner in UA by Clutch, GoodFirms, TechReviewer, and TopDevelopers 🔥 NICHES WE WORKED WITH: □ Healthcare ⛑️ □ EdTech 📚 □ FinTech 💸 □ HR 👥 □ Social 📣 □ Media 🎵 □ Automotive 🚘 □ Publishing 🗞️ □ Productivity 👣 □ eCommerce 🛒 🔥 SERVICES: □ Software Development (Mobile, Web, Desktop) □ UX/UI design □ UX research □ UX audit □ Code review □ Software Testing □ Solutions Architecture □ Business Analysis □ Product Management □ Cloud Migration Enablement □ DevOps □ Cloud Security 🔥 TECH & TOOLS WE MASTER: □ React (ReactJS, React.js) □ React Native (ReactNative) □ Swift □ Kotlin □ Node.js (Node, NodeJS) □ TypeScript (TypeScript) □ Meteor (MeteorJS, Meteor.js) □ Angular (AngularJS, Angular.js) □ Vue.js (Vue, VueJS) □ No/Low-code (Bubble, Webflow, WordPress & others) 🔗 Featured on Dribbble: /fulcrum_design 🔗 Top rated on Behance: /fulcrumrocks1 🤩 SOME TESTIMONIALS ABOUT OUR DEV WORK: “Their enthusiasm for what we’re building and sensitivity around these topics are helping a lot.” — Blair Matthews, Co-Founder & CEO at Zuri Fertility “We’ve been really impressed with the engagement results.” — Adam Pratt, Director of Innovation at Project Partners "The developments are also of the high quality we were looking for.” — CTO & Co-Founder at Launch.career 🚀 Have an idea? I would love to hear it! Drop me an invite and let’s rock the world together. ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ 🕵️ SO YOU DON’T STRUGGLE TO FIND ME: Startups, Startup, Corporate, Software Development, MERN, MEAN, Web Development, Mobile Development, Senior Developer, Senior Designer, CTO, Lead developer, PWA, UI, UX, Web Design, Mobile Design, Development Expert, Desktop, iPhone, Android, Cross Platform, Cross Mobile, Application, Website, Responsive, Adaptive, Long-term, SAAS, QA, Testing, Agency, Developing, Agile, Kanban, Scrum, Waterfall
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Ionic Framework
    Electron
    Lean Startup
    Startup Company
    Minimum Viable Product
    Swift
    AI Mobile App Development
    Mobile App Design
    React Native
    Mobile App Development
    AI Development
    React
    Front-End Development
    Node.js
    JavaScript
    Vue.js
  • $28 hourly
    I am a highly focused web and mobile developer with over 6 years of experience. I possess the requisite skill set to write well-structured, clean, and high quality code. I believe I am the software engineer you are looking for. Feel free to check technology in a greater detail below: Mobile👇 🔸Swift 🔸 Objective-C 🔸Core Image 🔸Core Location 🔸Core Animation 🔸Core Graphics 🔸 UIKit 🔸HealthKit 🔸SiriKit 🔸Firebase 🔸 iCloud 🔸REST API integration 🔸CocoaPods 🔸XCode 🔸Git Web 👇 🔸Python 🔸Node.JS 🔸 PHP 🔸JS 🔸 Vue.JS 🔸Nuxt.JS 👇 Skills: 🟢 Understanding and applying concepts of OOP and SOLID principles 🟢 Knowledge in multi-threading 🟢 Understanding and applying Human Interface Guidelines 🟢 Creating user interfaces using Auto layout, size classes, and code 🟢 Using Swift Package Manager and CocoaPods for connection libraries 🟢 Foundation 🟢 Push Notifications: local, remote (Firebase, OneSignal) 🟢 In App Purchases (RevenueCat, Native) 🟢 Realm Database 🟢 AVFoundation, AVKit (camera, audio, video) 🟢Core Animation, Core Graphics 🟢 Rest API, GraphQL, Socket 🟢 User Defaults, Keychain 🟢 WebKit, Messages (mail controller), Safari Services Our services for custom development:💪 ▪Custom CRM, ERP or other SaaS solutions to streamline business operations and improve performance ▪Custom platform development tailored to your specific business needs, enabling seamless online sales. ▪Corporate website development, designed to enhance your online presence and increase brand awareness. ▪High-converting landing pages that effectively communicate your message to your target audience and drive conversions. In case you require any more detail about my skills, do not hesitate to get in touch with me. I have already used my skills and technology stack on successful projects, please be so kind as to check my portfolio below.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    CRM Development
    Mobile App
    Full-Stack Development
    Vue.js
    SaaS Development
    Web Development
    Web Application Development
    Node.js
    Python
    React
    Mobile App Development
    iOS Development
    Objective-C
    Swift
  • $25 hourly
    Development of iOS mobile applications, work with UIKit SwiftUI technologies and other related ones. I use the Swift programming language. I also have php programming language skills in connection with laravel
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android App
    macOS
    iPhone & iPad Apps
    Java
    PHP
    watchOS
    tvOS
    iOS Development
    iOS
    iPadOS
    Objective-C
    UIKit
    Swift
    Native App Development
  • $30 hourly
    🚀 I'm like a mobile app wizard! 😃 I've helped startups and businesses create incredible mobile apps that secured over $10.5 million in investments to turn their ideas into reality. These apps were used by millions of people and raked in over $300,000 from users who couldn't get enough of them. Let's make magic together! 🎩📱💰🌟 With over 7 years in software development, I've dedicated 6 of those specifically to creating high-level applications for iOS and Android. My primary expertise lies in developing complex applications using Swift, SwiftUI, Objective-C, Java, and Kotlin. My portfolio includes: ✅ Client-server applications utilizing REST/GraphQL APIs (Apollo) ✅ Productivity tools ✅ Utility software ✅ Social networking applications ✅ Health and wellness platforms ✅ Sport applications ✅ AI-driven solutions, ChatGPT. ✅ Audio player apps I have a robust foundation in Object-Oriented Programming and Design (OOP/OOD). My skill set also extends to networking, Realm, and CoreData. I'm an advocate for design patterns and adhere to development methodologies like Scrum, and Agile, always aiming to enrich the development process with my insights. Key Skills: ✔️ iOS Development: Swift Programming, Objective-C, Xcode, Interface Builder, UIKit, Auto Layout, Core Data, Core Animation, SwiftUI, Combine, iOS Human Interface Guidelines, Core Bluetooth, Multithreading, Unit Testing, Debugging, App Store Submission, In-App Purchases, Performance Optimization, Dependency Management (CocoaPods, Carthage), Push Notifications, Localization, Facebook SDK, Google SDK, Firebase, Redux, TCA. ✔️ Android Development: Java/Kotlin Programming, Android Studio, XML Layouts, Activities and Fragments, Material Design, Android SDK, SQLite/Room Database, Gradle, Android App Architecture, Push Notifications, Firebase, RESTful API Integration, Recycler View, Dependency Injection (Dagger, Hilt), Jetpack components (ViewModel, LiveData, Navigation), UI/UX Design, Responsive Design, Geolocation and Maps (Google Maps API), Performance Tuning, Data Binding, Android NDK (Native Development Kit), Gradle Plugins, App Distribution, Accessibility, Firebase. ✔️ Cross-platform app development: Flutter, Dart.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Mobile App
    AI App Development
    Flutter
    Android App Development
    Mobile App Development
    SwiftUI
    Health & Fitness
    In-App Purchases
    Swift
    Firebase
    API Integration
    Chat & Messaging Software
    iOS
    Android
  • $35 hourly
    Project Management is the thing that I enjoy and have skills for. I have been working in this sphere for more than 5 years and know how to deal with obstacles of any kind and solve the problems that may occur on the path of delivering a qualitative product which corresponds to all customer's requirements. If you want a reliable person who is capable of performing multiple tasks simultaneously with no loss in quality, I am ready to help you. To give you a small insight into my average working day here is an approximate list of my responsibilities: - Define the scope of work necessary for the project creation in close collaboration with the customer and the development team; - Develop a detailed project plan to track progress; - Coordinate internal resources for the flawless execution of their tasks and objectives; - Represent the client's interests and provide advice on the management side; - Establish and maintain the communication between the client and the team of developers; - Keep track of the project performance using appropriate systems, tools and techniques; - Manage changes in the work scope, schedule, and costs; - Review the quality of the work completed with the development team to ensure that it meets all the standards. I will stand by your side like a bodyguard and guarantee that the delivery of your product will go as smoothly as possible throughout all stages.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    .NET Core
    MySQL
    MongoDB
    SQLite
    Swift
    Map Integration
    Flutter
    Firebase
    Tablet
  • $20 hourly
    Hi there! My name is Valeriia and I`m a Mobile app developer with huge experience. Yeah, I mean it – ✨huge experience.✨ You are looking for modern, user-friendly, and professional app? Text me! I know exactly what you need. I guess you are interested in my tech skills. Let me show! 📌For iOS: Programming Languages: Objective-C, Swift iOS (UlKit, SwiftUI, Combine, Xcode, Core Data, MapKit, AVKitCore Graphics, Core Animation, Core Location, Core Motion, Storyboard, Foundation) Architecture Pattern (Clean-Swift, MVC, MVP, MVP+C, MVVM+С, Viper, Redux) Patterns (factory, builder, fabric, strategy, delegation, mediator, singleton, adapter, dependency injection, service locator, coordinator, router) CI/CD (Fastlane, Jenkins) Databases (SQLite, MySQL, NoSQL, Realm) Concurrency, KVC/KVO, ARC, REST API, Push Notifications/Local Notifications, KeyChain, WebRTC, Multithreading, MessageKit, PushKit, StoreKit, FSCalendar, Alamofire, SwiftGen, AutoLayout, CocoaPods, Table View, Collection View, UIWebView, Popovers, Google map API, Firebase push notifications, JSON, Autorisation, AFNetworking, SDWebImage, MagicalRecord, Firebase, RxSwift, RxCocoa, Crashlytics, Fabric, Bluetooth, Apollo, GraphQL, Google SDK, GoogleMaps, ARKit, UnitTest 📌For Android: Programming Languages: Java, Kotlin Technologies: Android SDK, OOP, RxJava/RxAndroid, Clean Architecture, Retrofit, LivaData, ViewModel, MVP, MVVM, MVI, Room, Koin, Retrofit 2, Gson, Moshi, Material design, CameraX, ExoPlayer, Daylimotion Player SDK, Google Cast, XMPP, WebRTC Google API’s (Maps API, Places API, Elevation API, etc.), Google Analytic, Chrome Custom Tab, Push Notification (GCM/FCM), REST, Activity,Fragments, IntentService, Observer, Canvas, hotspot, DI (Dagger 2 , Hilt), Multithreading (JobScheduler, Threads, Rx), VOIP, AWS, Chromecast, Android lifecycle components, Android annotation, custom views, AR Core, Epoxy, Data Binding, Flow, Coroutines, Jetpack Compose, KMP, Lottie, Microsoft Spech Recognition, OKHTTP, Glide Moreover, I have experience in various domains, such as - FinTech (Banking, Payments), E-commerce, IoT, Healthcare, InsurTech, Business Apps, Social, New apps, Telecommunications, Apps with Wearable Devices, Entertainment/ Media Logistics/Travel and tourism. I also have experience with different trend deployment solutions such as Internet of Things (IoT), Artificial Intelligence & Machine Learning. Impressed? And it`s before you`ve seen case studies 😋By the way, about case studies, you really have to see them. You can find out more about my recent projects and used technologies by looking through it in my portfolio. If you need your app to be done professionally and clear, you might need me. I can provide you the most modern and competitive solution! 💎 Wow, you read this far. I'm glad because I want to tell you what else you can get by hiring me or the CHI Software agency I work for: ▪️ IT consulting ▪️ Staff augmentation ▪️ Product development ▪️ Web development ▪️ Mobile development ▪️ Software testing & QA ▪️ UI/UX design ▪️ DevOps Yes, you are right! We can provide you a full-development lifecycle including BA/PM and all engineers you need! Send me a message whenever you’re ready, and let's bring your idea to life together! 🤝
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    CI/CD
    Core Data
    Flutter
    Clean Architecture
    Android
    iOS
    Java
    RESTful API
    Google APIs
    UIKit
    Swift
    Room
    Objective-C
    Mobile App Development
  • $15 hourly
    My current stack: kotlin android studio(viewBinding+Fragment+navGraph) Hilt Room(Sqlite databases) Glide Firebase My first education and work are related to pedagogy. Given the specifics of this field, in my opinion, I quickly adapt to new conditions and learn quickly. I love programming, it's like math, only better. Because here we create new rules, and not just play with already created ones. I have experience with the following languages: kotlin, java, python, I also have basic knowledge of C, C++, C#, php, js.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Android Room Persistence
    Android Smartphone
    Android UI Design
    Android App
    OkHttp
    Mobile Game Development
    Android SDK
    Firebase
    Android App Development
    Java
    Android Studio
    Mobile App Development
    Android
  • $23 hourly
    Greetings! I am a highly experienced and top-rated mobile developer from Lviv with over 14,000 working hours on Upwork. My expertise lies in developing native iOS and Android apps, as well as cross-platform apps using React Native and Flutter. Over the years, I have worked on a wide range of projects, from simple utility apps to complex enterprise-level solutions. My skills include: • Strong knowledge of Swift, SwiftUI, Objective-C, Java, Kotlin, React Native, and Flutter • Experience working with various APIs and SDKs, including Firebase, Google Maps, and AWS • Proficiency in using version control systems such as Git and SVN • Ability to design scalable, maintainable, and reusable code • Strong debugging and troubleshooting skills • Familiarity with Agile methodologies In addition to my technical skills, I am also an excellent communicator and team player. I have worked with clients from various industries, and I understand the importance of clear communication, timely delivery, and excellent customer service. If you're looking for a reliable and skilled mobile developer, I am here to help. Feel free to get in touch to discuss your project requirements in detail. Thank you for your time, and I look forward to working with you! Best regards, Oleksii .
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    iOS SDK
    React Native
    Flutter
    In-App Purchases
    Java
    Objective-C
    Android App Development
    iOS Development
    Swift
    Smartphone
    Mobile App Development
    SwiftUI
    Android
    iOS
  • $45 hourly
    Hello, I'm Mykhailo from Blackthorn Vision 🚀, a premier custom software development company based in Ukraine, Eastern Europe. With over a decade of experience, we specialize in empowering technology companies by expanding their tech teams or managing their projects entirely. Here are some quick facts about us: 14 Years of Industry Experience: We have been on the market for over 14 years 📆, consistently delivering high-quality software solutions. Microsoft Partnership: Our collaboration with Microsoft enables us to stay at the forefront of technology and innovation 🔧. Global Presence: With 2 development centers in Ukraine and a team of 120+ professionals 👥, we have successfully completed 73+ long-term projects for Fortune 500 companies, serving clients across 25+ countries 🌍. Long-Term Client Relationships: Our client engagements last for 5+ years on average ⏳, a testament to our commitment and quality. Technology Expertise: We excel in a wide range of technologies including .NET, Golang, JavaScript (React.js, Angular.js, TypeScript), Electron.js, Node.js, mobile development (iOS Swift, Android Kotlin, Xamarin), and cloud services (AWS, Azure, Google Cloud) 💻. Industry Focus: We have profound expertise in various domains such as Energy, Oil & Gas, FinTech, Biotechnology, Healthcare, Budgeting & Accounting, Hospitality, Industrial Automation, Manufacturing, Internet of Things, Computer Software, Clouds & CyberSecurity 🏭. Our track record on Upwork speaks for itself: $300K+ in Total Earnings 💰 74 Total Jobs Completed ✅ 9,846 Total Hours Worked ⏲️ We believe in building success stories 🌟. You can find more about our achievements and client feedback on our website blackthorn-vision.com and our Clutch profile clutch.co/profile/blackthorn-vision#highlights. Connect with us on Instagram @blackthorn_vision and Facebook @blackthornvision to stay updated with our latest projects and community engagements 📲. Let's collaborate to turn your vision into reality with our cutting-edge solutions and experienced team 🌈. Reach out to discuss how we can support your next project.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Python
    .NET Core
    Golang
    UX & UI
    ASP.NET
    Swift
    React
    Node.js
    iOS
    Android
    Xamarin
    AngularJS
    C#
    JavaScript
  • $15 hourly
    I started his career as a programmer in Delphi, I work more than 15 years. There are also skills in C # (winforms) . (MSSQL, Oracle, MySQL, SQLite, PostgreSQL), also has skills with api functions, sound, theards etc. Working with REST API, like Elation, SureScript. Wrote simple backend server. Mobile develop on Delphi and Java. Have skill with https, ftps, sftp (etc) protocols.
    vsuc_fltilesrefresh_TrophyIcon Kotlin
    Object Pascal
    Delphi
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