Hire the best Xamarin Specialists in Kyiv, UA

Check out Xamarin Specialists in Kyiv, UA with the skills you need for your next job.
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based on 131 client reviews
  • $20 hourly
    Senior iOS developer with 7 years of experience of iOS development, keeping up with the times in the world of iOS. I quickly immerse myself in the project and provide results, enjoying applying my skills and knowledge to create engaging and user-friendly products that meet the needs and expectations of the customers. With 7 years of work experience under my guidance, over 30 successful projects have been released on the App Store. Personally, as a solo developer, I have launched 15 projects on the App Store. I possess skills in conducting interviews like interviewer, mentoring, and teaching individuals. In development, I take a proactive stance, contributing my suggestions and making adjustments. Top rated UpWork developer. Senior iOS Developer Oct 2023 - Nov 2023 NDA, Remote (Contract) - Worked on 2 iOS POS applications with a team of 8 people. - Integrate NeedleFoundation and separate each feature into individual components - Introduce Xcode Cloud for delivering builds to QAs - Implemented mTLS using URLSession - Implemented X.509 certificate validation using the Swift-Certificates library - Refactor SDK to modern Swift concurrency Team Lead iOS Developer Manager Sep 2022 - Sep 2023 Ruliad, Remote (Full-time) - Worked on an online encyclopedia of alcohol and cocktails with a team of 7. Implement DataDriven UI - Optimized application performance, resulting in a 30% improvement. Implemented efficient algorithms, identified and resolved bottlenecks, and fine-tuned critical components to enhance overall responsiveness and user experience - Established seamless communication between iOS and backend teams for efficient project coordination Senior iOS Developer Aug 2020 - Aug 2022 GlobalLogic, Remote (Full-time) - Worked on OTT platforms for famous broadcasting companies, with different team sizes from 20 to 8 developers. - Enhanced app performance by 20% through the recreation of the shared Electronic Program Guide (EPG) across three applications - Implemented a ChromeCast module enabling casting of both 'On Demand' (including DRM) and live content to devices with ChromeCast capability - Integrate IMA DAI - Worked closely with tvOS, iOS, and iPadOS. Organized shared code into Swift Package Manager, making it easy to reuse across all projects. Customized specific logic within each project Middle iOS Developer Aug 2019 - June 2020 Teamwork Commerce, Kharkiv (Full-time) - Worked on an mPOS platform for famous clothing brands with a team size of 40 people. - Implemented NF525 fiscalization with my colleague - Resolved database synchronization issues, deadlocks, race conditions, tracked memory leaks, and implemented fixes. - Synchronized the main mPOS app with the Self Checkout app using Bonjour for seamless communication between the two applications. Middle iOS Developer Aug 2018 - May 2019 Nebula labs Technologies, Remote (Full-time) - Developed sports, emoji, and corporate applications with team size of 3 people. - Converted a Cordova application into a native iOS application, starting from scratch and delivering to the release candidate stage - Worked with a team on a sports application Junior iOS Developer Feb 2018 - Aug 2018 BOVA LLC, Remote (Full-time) - Worked on an astrology app. - Implement Birth charts Junior iOS Developer Aug 2017 - Jan 2018 Syject, Kharkiv, (Full-time) - Developed various projects as a solo developer, including readers, quizzes, time trackers, and forums. - Developed apps from scratch to release candidates and successfully published them on the App Store.
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    OpenCV
    React Native
    Firebase
    Flutter
    Google Protocol Buffers
    Apple Xcode
    Python
    Objective-C
    Swift
    UIKit
    SwiftUI
    iOS Development
    iOS
    Mobile App Development
  • $45 hourly
    🚀 Greetings! With over 11 years in the mobile development realm, I am a full-cycle mobile developer equipped to construct entire mobile applications from the ground up, spanning from design to implementation. Here's a snapshot of the technologies I wield: ✅ Languages: Swift, Objective-C, Java, Kotlin, Javascript, Dart ✅ Frameworks: React Native, Flutter, Node.js ✅ Databases: Firebase, MySQL, MS SQL, Cassandra, MongoDB, PostgreSQL, Redis ✅ SCMs: Github, Gitlab, BitBucket ✅ CI/CD tools: Jenkins, TeamCity, CircleCI, GitLabCI, GitHub Actions, Bitbucket Pipelines, Docker, Kubernetes ✅ Testing Approaches: TDD, BDD My expertise extends to microservices and event-driven architectures, with a wealth of experience in handling scalable applications. Beyond coding, I excel in working with legacy code, optimizing and automating processes, and crafting efficient workflows. Proficient and skilled in both design and mobile development, I can transform your ideas into market-ready solutions. Here are some of my specialties: 🍔 Food/Retail Delivery and Pickup Platforms for Drivers, Staff, and Customers 👥 Social Networks for Friends/Groups with Chat, Feeds, Profiles, Signup, and Log in 🔄 Buy and Sell Marketplace Apps with Commissions and Payments 📊 Task Management, Expense Management, and more. Let's collaborate to bring your visions to life and make a significant impact in the digital landscape! 💻✨
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    JavaScript
    Node.js
    Tablet
    Objective-C
    Java
    Hybrid App Development
    Firebase
    Mobile App Development
    Android
    iOS
    Flutter
    Smartphone
    Smartwatch
    iOS Development
    React Native
    Swift
    Native App Development
    Android App Development
    Kotlin
  • $50 hourly
    * Over 15 years of hands-on experience in leading a team of software developers. * Extensive experience in developing mobile, desktop, web, blockchain, IoT, and corporate solutions. * Expert knowledge of Object-Oriented Programming. * Expert knowledge in cross-platform software development for mobile (Android, iOS, WebOS, Tizen) and desktop operating systems (Windows, Linux, macOS) using C++ with wxWidgets, and C# with Xamarin. * Proven experience in successfully managing Blockchain startups. * 20 years of experience in software development. * wxWidgets Technology Evangelist in Eastern Europe.
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    Windows API Development
    WxWidgets
    Blockchain
    IT Project Management
    Python
    Node.js
    Web Development
    iOS Development
    Project Management
    Standard Template Library
    TCP/IP
    Mobile App Development
    Android App Development
    C++
    C#
  • $30 hourly
    I am a developer with over 10 years of microsoft stack experience: -.net core -MS Sql -vue js -angular js -ef core -pg sql -wep api -xamarin -oracle -...
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    Desktop Application Bug Fix
    .NET Core
    OpenCV
    WordPress
    C#
    PostgreSQL
    Microsoft SQL Server
    Vue.js
    Entity Framework
    .NET Framework
    ASP.NET Core
    ASP.NET Web API
    ASP.NET MVC
    Desktop Application
  • $45 hourly
    Snihur Maksym I'm experienced and talented C# developer. Mainly aimed to Xamarin.Forms/MAUI. I have good understanding of API development, modern mobile and desktop applications trends. I always prefer establish good communication level with customers to provide exactly what they need and adapt fast to changing requirements. I'm confident, selfmotivated and result-oriented person who can work under minimal observation. I can work both efficiently as team player and as individual. I've built and managed projects for individuals and startups.
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    Cross-Device Compatibility
    API Development
    Desktop Application
    Microsoft SQL Server
    .NET Framework
  • $36 hourly
    Developer of cross-platform .net MAUI mobile applications and web architecture (ASP .net). Help you with your projects.
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    C#
  • $70 hourly
    I'm experienced Xamarin Native developer. I use MvvmCross framework. Please check my personal portfolio fir-what-to-watch.web.app/about_us.html I have good understanding of modern mobile applications trends, you can check my portfolio. I always prefer establish good communication level with customers to provide exactly what they need and adapt fast to changing requirements. I'm confident, self-motivated and result-oriented person who can work under minimal observation. I can work both efficiently as team player and as individual. I've built and managed projects for individuals and startups. Business logic, API, database layers are in core project(.net standard library), platform projects are only for data showing and some platforms specific features with native UI and UX guidelines. Xamarin utilizes C# as its key programming language. This enables more than 70% of the code to be reused between iOS, Android and other platforms. An app built with Xamarin offers the same level of performance as that of a natively developed app. Expertise: ✅ 8 years experience in software development and more than 6 years in mobile development. ✅ Languages: C#, Objective-C, Swift, Java ✅ Strong knowledge in Android and iOS SDKs. ✅ ASP.NET, Web.Api, WCF, Windows Services, WinForms, WPF ✅ MSSQL, Oracle PL/SQL ✅ Binding Java(.aar) and Objective-C or Swift libraries(CocoaPods) ✅ Native mobile app development for iPhone, iPad, Android phone and tablet ✅ Creating complex UI iOS(Storyboard, .xib or AutoLayout), Android(xml) ✅ Database: SQLite, Realm ✅ Razor cshtml templates ✅ Communication: REST(HttpClient), WebSocket(websocket-sharp, SignalR) ✅ Social network integration: Facebook, Twitter, Instagram, VKontakte, Google+, etc ✅ Barcode scanning(Firebase, ZXing) ✅ Chatting protocol: XMPP(eJabber), Meteor(rocket.chat) ✅ Map integration: Google Maps(iOS, Android), MapKit(iOS), OpenStreetMap(Android) ✅ Payment services: In-App Purchase, Stripe ✅ AdMob (Banner, Full screen, Video) ✅ Analytics services: Google Analytics, Firebase Analytics, AppCenter, AppsFlyer ✅ CI/CD & Crash Reporting: AppCenter, Azure DevOps ✅ iOS, Android Linker(link all), proguard, r8 ✅ Distribution: Apple Store, Google Play ✅ Design Tools: Sketch, Zeplin, XD
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    Model View ViewModel
    SQLite Programming
    Apple Xcode
    iOS SDK
    Android SDK
    iOS Development
    Android App Development
    Mobile App Development
    Chat & Messaging Software
    Tablet
    Smartphone
    Java
    Realm Database
    Android Studio
  • $75 hourly
    I have 7 years of production experience in creating mobile apps with Xamarin.Native (both iOS and Android), Xamarin.Forms and .NET MAUI. I've started my career by joining startup which was about creating new messaging app. After that i've been working for a couple of years for a small company in Ukraine. After that I was hired in big Ukrainian outsource company with 8000+ employees. Knowledge areas: 7 years in mobile development using Xamarin, Xamarin.Forms .NET MAUI WPF development experience Strong knowledge in C#, Android & iOS SDK Languages: C# Binding native android libraries, binding native iOS libraries Creating Android UI in axml and code Creating iOS UI in storyboards, xib files, code MvvmCross framework MvvmLight framework Azure Mobile Services SQLite database Network communication through REST and WebSocket Social networks API integration (Facebook, Google+) Android media services (Camera, Audio recording and playback) iOS media services (Camera, Audio recording and playback) Android geolocation iOS geolocation In-App purchases Google ads api integration Google Analytics, Facebook Analytics, AppCenter analytics CI/CD: Jenkins, Azure DevOps, AppCenter, TestFlight Publishing iOS/Android apps to markets
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    Android
    Visual Studio Team Services
    iOS Development
    Kanban Methodology
    C#
    Microsoft Visual Studio
    Azure DevOps
    Scrum
  • $50 hourly
    I have 6+ years of experience in building mobile apps from scratch, working closely in a team, taking the lead, and having a success by doing more, than expected. I have been working on many enterprise projects, startups, market leaders. Finances, retail, corporal communication, betting, home workout, all-in-one applications for employees. Applications are built for iOS and Android, using .NET stack, primarily Xamarin.Native + MvvmCross. I have a Bachelor of Engineering degree
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    C#
    iOS
    Android
  • $30 hourly
    Having computer science degree been in web-applications development area since ASP.NET 2.0 release days (14+ years), being involved into full stack of various .NET-related projects. Recently also expanded to Xamarin Apps development and Azure Environment and Data Warehouse. Paying much attention to UIX/UI during the development process. Interested in long-term collaboration as well as it was with most of my previous projects. What I can help you with:   – building native iOS, Android, Windows Store applications;   – building a SPA-website with Angular frontend;   – building a website backend based on ASP.NET MVC/ASP.NET API/ASP.NET Core;   – analyzing and reviewing of existing applications architecture to decide if any     (and what exactly) approaches can solve the issues you have with the app,     and then …;   – … fixing and improving of existing code;   – migrating your existing app and setting up a new environment with new code deployment;   – documenting of current code/app features. What if you…   – … have a backend built with some other (different from .NET) technology already?     No problems, still possible to use it for connecting of existing frontend code to it;   – … don’t have a developer to support legacy-code built with other technologies?     I can help you to find such person and still continue the development;   – … not sure what approach to choose?     Just provide me with your generic requirements regarding the results     you want to have as result, and we come up with appropriate solution;   – … have a project being left unfinished by previous developer?     I can analyze it and we should work it out.   – … are in a rush?     I can provide you some overtime for a short term (long-term overtime is good     neither for you nor for me, let's better find more help outside!);   – … already have a mobile app built with different (from Xamarin) technology     (like Objective-C, Java, PhoneGap, Cordova etc.) waiting for upgrade?     I can explore existing source code of the app and with extensive communication     and your help we can build a great new app;   – … will need more developers once your project starts growing?     We can surely start collaborating with more people in future;   – … want to use Linux for your apps backend hosting?     Sure, generally that’s possible with ASP.NET Core these days;   – … need your services to be upgraded/enhanced, but your clients base is large enough,     so it’s critical to stay on?     We can definitely apply updates step-by-step with performed testing on Stage     environment before the deployment;   – … are located far from my working place and we have large time difference?     We can agree on particular hours during the day when we definitely get connected. Technologies/approaches I use/try to follow in my work:   – Xamarin Native (iOS with Core Graphics animations, Android)     with SQLite db as local storage;   – Xamarin.Forms having views built with XAML;   – MVVM-pattern (preferably with MvvmCross framework using);   – Mobile apps Push Notifications handling with Azure Notification Hub involving;   – Microservices architecture built with SOLID principles;   – ASP.NET MVC/Razor/ASP.NET Core (as far as the framework progressing) for backend;   – SPA-frontend based Angular (1.6 and 2.0) (including HTML5, CSS3, SASS/LESS)     with responsive mobile-friendly UI;   – SVG (D3) and CSS3 frontend animations;   – MS SQL, MySql data storage with EF/EF Core ORM (with LINQ), or Azure SQL     and Azure infrastructure to connect to the data sources;   – RESTfull data services (ASP.NET API/ASP.NET Core or Azure Mobile Services) to deliver     data to the mobile app (possibly, WebSockets/SignalR but REST is more preferable);   – Git/SVN/TFS repositories with Github or Bitbucket hosting (I do prefer Git, for sure);   – Unit testing for the most important part of the app;   – Using Azure App/Web services with possibility of further migrating to Azure Service Fabric;   – Using Visual Studio, Xcode, Resharper, Visual Studio code     and basic development environments, also Adobe Photoshop/Illustrator, CorelDraw;   – Scrum/Agile approach with regular reporting? Sure! Technologies I have experience to work with in the past as well:   – VBA, VB.NET, Coffee Script, TypeScript, RegexSQL (Transact-SQL);   – Win32, WCF, Oracle and PostgreSql Databases, ADO.NET, Crystal Reports, Elastic Search;   – Ruby, PHP, Node.js, F# (common exploration);   – Durandal/Knockout, Bootstrap;   – Objective-C (Xcode);   – NancyFx framework;   – Flutter (common exploration);   – RubyMine, PHPStorm IDE;   – Swagger, MailChimp, Mailtrap, Pivotal Tracker, Amazon E2/S3 and other services;   – Adobe Flash.
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    .NET Core
    Blazor
    Selenium
    iOS Development
    Telegram API
    JavaScript
    Android App Development
    C#
    ASP.NET
    ASP.NET Core
  • $20 hourly
    Evgen, graphic designer, Photoshop specialist It’s not that I always dreamed of this profession - I just didn’t even know that you could earn money with it. Photoshop became interesting to me when I got my first digital camera and on the disk with instructions for it there was some simple program with frames and stupid effects - a mini-editor where I took my first steps in graphic design. Somehow, a project of a family tree had to be brought to school: everyone drew by hand on whatman paper, and for one girl the tree was made just in Photoshop: photos of relatives were placed in apples and hung on an apple tree with signatures. I was very surprised, because I thought that only professionals who work on cool computers in large offices can do this. It turned out that it's all about Photoshop, which is available to everyone. My first version was, of course, installed in an artisanal way - the times were like that. I was very interested in design, I learned how to process photos and make different pictures. My parents supported my hobby and themselves threw the idea that this could be a good part-time job, so already in high school I was earning pocket money on small orders. Now I don’t work, I’m bombed by Russians every day, I’m looking for money for food, I take orders at home. At my last job, I often have to make presentations, design postcards and banners for the site, and at home there are many orders for processing and editing photos, developing logos and infographics. I am grateful to fate that I am alive, and I also once got acquainted with Photoshop. It helped me a lot in my studies and the transition to a new profession, that I always had a good command of the program.
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    C#
    CSS
    Desktop Application
    Windows App Development
    Windows Forms
    HTML
    Selenium
    ASP.NET
    JavaScript
  • $15 hourly
    I have been working in IT for many years, and I have a variety of experience, but mainly in the development of client solutions for mobile platforms. Recently, I have been working as a full stack developer (mobile client + .NET backend). I enjoyed developing microservices, so I made a willful decision to quit mobile development and focus on backend. At the current stage of my development as a backend programmer, I don't care what my position will be called and how much money I will get for my work, the main thing is gaining experience. I live in the city of Kyiv in Ukraine and have an ability to work remotely with flexible schedule
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    Microservice
    Software Design
    Test Automation
    Unit Testing
    Unity
    ASP.NET
    Flutter
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