Hire the best Object Oriented Programming (OOP) Specialists in Ukraine

Check out Object Oriented Programming (OOP) Specialists in Ukraine with the skills you need for your next job.
  • $50 hourly
    Full-stack developer with 3+ years of experience. Write in TypeScript and NodeJS. Have worked in both startups and large companies. Can write highly efficient code, as well as adjust to fast time-to-market rate. I am passionate about information technologies and how they help build successful businesses. Front-End: HTML, CSS, JavaScript, React, Redux, Next, Apollo, StoryBook, Webpack Back-End: NodeJS, Nest/Fastify/Express, Postgresql/MongoDB/Prisma, Redis, Docker Tools: TypeScript, git, CI, Feature Sliced Design, LangChain, Jest
    Featured Skill Object Oriented Programming (OOP)
    Object-Oriented Programming
    Storybook
    Jest
    CSS
    Responsive Design
    JavaScript
    React
    Agile Software Development
    Kubernetes
    Node.js
    HTML
    Git
    Redux
    Front-End Development
    TypeScript
  • $50 hourly
    Capable of managing projects of the highest complexity. We take over projects at any stage of development whether it is just a single idea or a detailed specification written or an already functioning system to be improved /fixed. -architecture (writing system specifications & making wire-frames) -designs (logo, corporate style, website design) -layout (including responsive one) -programming (front & back ends) PHP preferably We use MVC Framework: Zend & Symfony CMS: Magento
    Featured Skill Object Oriented Programming (OOP)
    Magento 2
    Software QA
    Magento
    PSD to HTML
    Object-Oriented Programming
    Sass
    Ecommerce Website
    PHP
    JavaScript
  • $60 hourly
    Key Information - Unity 3D (C#) - 14 years, now use (creating project architecture, user interfaces, game logic, multiplayer, artificial intelligence, plugin integration) - OOP - Design patterns - Programming principles (SOLID, DRY, YAGNI, KISS) - Experience in managing teams (up to 12 people) - Experience in plugin integration (Facebook SDK, analytics SDK, IAP, local and Push notifications, Google Play Game Services) - Experience in custom editor tools development - Experience in application optimization on Unity3d on iOS and android - Experience in multiplayer games using cloud solutions Unity Photon Network and Photon Server for Unity
    Featured Skill Object Oriented Programming (OOP)
    Game Development
    Game Prototype
    Mobile Game Development
    Agile Software Development
    Git
    Unity
    Photon Unity Networking
    Leadership Skills
    C#
    Android
    Teaching Programming
    Object-Oriented Programming
    Software Architecture & Design
    Scrum
  • $10 hourly
    Skills and Experience Desired: Strong proficiency in PHP and experience with Laravel framework (version 8-10). Familiarity with CodeIgniter (version 3) and understanding of its principles. Proficiency in Object-Oriented Programming (OOP) concepts. Experience with PHPUnit for unit testing. Thorough knowledge of Blade templating engine. Familiarity with Moonshine deployment tool for Laravel. Strong knowledfe of RESTful API development and integration. Also Jwt and Swagger. Proficiency in using SQL and MySQL for database management. Knowledge of programming patterns such as SOLID, KISS, and DRY. For development I use Linux + Docker (LAMP, LEMP)
    Featured Skill Object Oriented Programming (OOP)
    PHPUnit
    Object-Oriented Programming
    API
    HTML5
    Vue.js
    JavaScript
    CodeIgniter
    Bootstrap
    MySQL
    CSS
    Laravel
    PHP
    HTML
    SQL
  • $30 hourly
    With over 8 years of industry experience, I am a highly skilled C++ engineer with extended experience in Desktop Software/Architecture development. Have created and extended both: console and GUI applications. The applications I create are developed using best practices and design patterns, including GoF, GRASP, and SOLID. Technical Expertise: - Programming Languages: C++ (11, 14, 17, 20), Assembly, SQL, Python; - Technologies: STL, Qt 4.x – 6.x, WinAPI, MFC, ATL, Boost, WebView2; - Development Tools: Microsoft Visual Studio (2003 - 2022), MSBuild, vcpkg, GitHub, VS Code, CMake, QtCreator, GCC, WSL2, Keil 5, AVR Studio, Atmel Studio; - Database Systems: SQLite, MS-SQL; - Version Control: Git, Perforce, SVN; - UML: Any GUI UML editor, PlantUML; Core Competencies: - High-performance GUI applications using Qt Framework (QtWidgets, QML); - Multithreading; - Console applications, pure WinAPI applications, Windows Services, and system applications Interprocess communication; - Serial communication, hardware integration, and custom protocol design; Let’s connect and explore how I can contribute to your next project!
    Featured Skill Object Oriented Programming (OOP)
    UML Diagram
    Multithreaded Programming
    Boost
    Unit Testing
    Software Design Pattern
    Qt Creator
    Microsoft Windows
    Desktop Application
    Microsoft Visual Studio
    Microsoft Foundation Class Library
    Qt Framework
    Git
    Standard Template Library
    Object-Oriented Programming
    C++
  • $30 hourly
    Skilled Mobile Engineer with more than 8 years of development experience. Started as an Android developer and then move to work with Flutter and deliver applications to both platforms. Core skills: Strong knowledge of Dart, Kotlin, Java Core, Flutter, Android SDK Good understanding of OOP principles, REST, JSON, design patterns, Android Jetpack tools Proficient in XML, SQLite, Git IDEs: Android studio, IntelliJ IDEA, NetBeans English – upper intermediate Industry aware, good problem solving skills Experince in working with third-party libraries: Retrofit, RxJava, Volley, Dagger2, Butter knife, Gson, GraphView, Retrofit, Picasso, Realm, Social networks integration( Facebook, Twitter, Instagram), Google Maps API, Youtube API
    Featured Skill Object Oriented Programming (OOP)
    Google Maps API
    Object-Oriented Programming
    XML
    Core Java
    JSON
    SQLite Programming
    Material Design
    Android SDK
    Mobile App Development
    iOS Development
    Firebase
    Android App Development
    Dart
    Flutter
    Android
  • $25 hourly
    Game Developer | Unity / Unreal | Web3 & Backend Solutions | Mobile & Web Apps Hi, I’m Danyil — a Unity/C# developer with over 6 years in game development. I help studios, startups, and game producers build and ship stable, scalable games — from prototype to launch, and beyond. I’ve worked on 50+ games released on iOS, Android, PC, Web and VR platforms, covering both single-player and multiplayer projects. My goal is always the same: clean architecture, production-ready builds, and clear communication. 📊 Games I’ve worked on have been downloaded 300k+ times, featured on stores, and played by users across the US, Europe, and Asia. 🛠 What I Do: 🎮 Full-cycle game development (GDD → prototyping → release); 🔁 Multiplayer systems (Photon, Mirror, custom sockets); 🧩 UI logic, transitions, animation, asset integration; 🧠 Game economy, IAP, rewarded ads, analytics (Firebase, PlayFab); 🛡 QA support, bug fixing, optimization, crash tracking; 🌐 WebGL & mobile publishing (Unity, App Store, Google Play). ⚙️Platforms I develop for: 📱 Mobile (iOS / Android – casual, mid-core, hybrid monetization); 💻 PC, Steam, Xbox, Nintendo (indie and AA-level projects); 🥽 VR/AR (physics-based games, multiplayer experiences); 💬 Telegram Games (with analytics and admin panels); 🎲 GameFi & Gambling (secure payments, licensing support). 🧠 How I work ✔️Initial consultation & scope definition; ✔️Prototype or vertical slice; ✔️Weekly updates and demos; ✔️QA, bug fixing & optimization; ✔️Publishing support and LiveOps maintenance. 💬 Why Clients Choose Me 🚀$30K+ Upwork earnings | 100% Job Success | 5★ reviews; 🚀Clear communication, fast feedback, flexible sync; 🚀Clean code, strong architecture, and full documentation; 🚀I care about player experience — and your business goals. If you’re looking for a reliable developer who understands product goals, user experience, and delivery — let’s talk. I’ll help you turn your idea into a live, stable and scalable product.
    Featured Skill Object Oriented Programming (OOP)
    Game Art
    Multiplayer
    Design Concept
    3D Modeling
    Gamification
    Game Design
    UI/UX Prototyping
    Blockchain
    Object-Oriented Programming
    3D Animation
    AR & VR
    Game
    Game Development
    C#
    Unity
  • $15 hourly
    Greetings! My name is Vadim, and I am a Python Middle Developer / Software Engineer with more than one year of professional experience. I have a strong background in building web applications using the Django framework or Flask, and I also excel in creating custom Telegram bots. Additionally, I possess extensive knowledge of working with APIs, web scraping, object-oriented programming (OOP), and Python coding across various domains. My proficiency extends to Unix systems, allowing me to work comfortably in diverse environments. I also have experience working with such languages as PHP, C++, C, JS, jQuery. I actively showcase my projects on GitHub, where you can explore my portfolio in detail. Among my notable accomplishments, I have taken the initiative to organize and conduct numerous Python meetups aimed at educating and inspiring young children. These meetups have provided me with the opportunity to share my knowledge and passion for programming, further fueling my commitment to the field. Moreover, I have excelled as a team leader in a large-scale project, where my strong leadership skills and technical expertise were instrumental in delivering successful outcomes. Currently, I am engaged as a developer in an exciting crypto wallet project called RedCat Wallet. This role allows me to contribute to the development of secure and efficient solutions within the cryptocurrency domain. In addition to my core skills, I have hands-on experience working with various databases, including PostgreSQL, MySQL, SQLite and Oracle DB. I am well-versed in version control tools such as Git, enabling effective collaboration and code management. My dedication to writing clean, maintainable code drives me to stay updated with the latest technologies and industry best practices, ensuring that my work is of the highest quality. Full technology stack I work with: 1. Languages - Python, PHP, C, C++ 2. FrontEnd - JS, JQuery, HTML, CSS, SCSS, SASS, WordPress, Figma 3. Databases - PostgreSQL, MySQL, SQLite, Oracle DB 4. Unix - Linux, MacOS 5. GIT - GitHub, GitLab, GitHub Actions If you are interested in collaborating with me or would like to learn more about my projects, please feel free to reach out. Thank you for considering my portfolio, and I look forward to the possibility of working together in the future.
    Featured Skill Object Oriented Programming (OOP)
    Unix
    Git
    API
    Object-Oriented Programming
    Bot Development
    Full-Stack Development
    Web Development
    Flask
    Django
    HTML
    PHP
    Python
    SQLite
    MySQL
    PostgreSQL
  • $35 hourly
    I'm expert web development - Front-end | Back-end, with experience over 5 years. I'm hard-working developer. My services: ✅ WordPress Website Development ✅ E-Commerce website development ✅ WooCommerce Website Development ✅ WordPress Themes ✅ Wordpress Plugins ✅ Error correction ✅ Responsive/Bootstrap/Tailwindcss Frameworks ✅ CSS3 / HTML 5 (CSS semantic markup) ✅ JavaScript / JQuery ✅ Cross Browser HTML and CSS ✅ Figma, Zeplin, Avocode, Photoshop to Responsive HTML5, CSS3, Bootstrap, Tailwindcss ✅ Responsive website design and redesign ✅ Support for existing projects and consultations Why choose me? ✅ 100% clean code. ✅ 100% meeting deadlines. ✅ Over 3 years of experience ✅ Excellent customer and technical support. I am proficient in WordPress, HTML5/CSS3 (SASS), JavaScript (jQuery), PHP/MySQL, Figma/Zeplin/Avocode/Photoshop I will be glad to cooperate with you!
    Featured Skill Object Oriented Programming (OOP)
    gulp
    Object-Oriented Programming
    Flexbox
    SQL
    jQuery
    Bug Fix
    WordPress e-Commerce
    CSS Grid
    WooCommerce
    WordPress
    CSS 3
    Figma
    HTML5
    PHP
    Elementor
  • $33 hourly
    Hi, I'm a Senior Full Stack .NET Developer / Team Lead with 10+ years of experience. I have experience as Team Leader of 4 developers, 1 Project Manager, 1 QA. I'm a responsible motivated developer and I would be glad to do any development work for you. - Software development: C#, .NET Framework, .NET Core, Java, JavaEE, Spring Framework - Web development skills: ASP.NET MVC, ASP.NET Core, Blazor, MudBlazor, Entity Framework, Entity Framework Core, ADO.NET, WebAPI, SignalR, HTML, CSS, XML, JSON, JavaScript, TypeScript, AJAX, jQuery, REST, SOAP, Bootstrap - JavaScript frameworks: AngularJS, jQuery, jQuery UI, ChartJs - Desktop development: WPF, Windows Forms, XAML - Databases: MSSQL, SQLite, MySQL, PostgreSQL - IoC: Ninject, Autofac, Unity, Castle Windsor - Testing: NUnit, XUnit, Selenium - Logging: log4net, Serilog, NLog - Tools: Quartz.NET, Swagger, Fiddler, PuTTY, WinSCP, FileZilla, Postman, Wireshark, PowerShell, .NET Reflector - Understanding: OOP, GRASP, GOF, SOLID, DDD, CQRS, Event sourcing - Managing: Agile, Scrum - Collaboration: Jira, Trello - Source control systems: TFS, Git, Svn, BitBucket - IDE: Visual Studio, Resharper, VSCode, Eclipse, NetBeans - Other: SIP, TAPI I can work in a team and as an individual developer. I understand other developer's code and can work on ongoing projects. Always try to meet deadlines, learn and improve my skills.
    Featured Skill Object Oriented Programming (OOP)
    Object-Oriented Programming
    Web API
    .NET Core
    Blazor
    ASP.NET MVC
    TypeScript
    Windows Presentation Foundation
    Entity Framework
    JavaScript
    CSS
    HTML
    SQL
    .NET Framework
    ASP.NET Core
    C#
  • $45 hourly
    A bright, talented, and ambitious Ruby Developer. I have good knowledge in Web development, from concept to implementation and optimization. I always try to do my best to fit all the requirements of my clients. Looking forward to your messages!
    Featured Skill Object Oriented Programming (OOP)
    API
    Jira
    Object-Oriented Programming
    JSON
    MySQL
    Sinatra
    JavaScript
    Ruby on Rails
    jQuery
    Ruby
  • $40 hourly
    Thanks for reviewing my profile. My name is Dmytro Vasyliev and have a lot of experience in website development. My core skills are: -Frontend: Html, CSS, Javascript, Typescript, Angular, React -Backend: Node.js, Django(Python) -Database: MongoDB, MySQL, PostgreSQL, Redis I am a highly-detailed person and realized that the quality of the results is a key point for the successful business. So I'll always try to deliver the high-qaulity results for my clients' successes. Also I am very crazy about learing new technologies and love team-working as well. Please feel free to contact me if you are looking for a professional website developer.
    Featured Skill Object Oriented Programming (OOP)
    Django
    Koa
    Front-End Development
    Object-Oriented Programming
    Socket.io
    API Integration
    SCSS
    Tailwind CSS
    Redux
    Python
    Node.js
    React
    TypeScript
    JavaScript
  • $38 hourly
    Experienced in development of web-applications. Great product-oriented skills, focus on competitive advantage.
    Featured Skill Object Oriented Programming (OOP)
    Protractor
    Object-Oriented Programming
    Redux
    TypeScript
    PHP
    JavaScript
    RxJS
    Angular
    React
    Node.js
    Symfony
    SQL
    Ruby on Rails
    Ruby
    webpack
  • $45 hourly
    Hello! 🚀 I’m a driven back-end developer, passionate about delivering beyond expectations. My focus? Your project’s success. You'll find that I work efficiently, and more often than not, ahead of schedule. My journey through various startup ventures has chiseled me into a professional who can swiftly adapt and resolve challenges. I'm all set to be a part of your team, grasp your needs, and breathe life into your business goals. 📌 Key Skills: Languages: JavaScript, TypeScript 📜 Server-side Tech: Node.js, Fastify, Express, Nest.js, Koa 🌐 ORM Tools: TypeOrm, Knex/Objection, Sequelize, Prisma 🛢️ Databases: PostgreSQL, Redis, OneSearch, MongoDB, MySQL 📂 DevOps: Docker, CI/CD tools, AWS, Kubernetes 🚢 Testing: Jest, Node:test/Tap, and more 🧪 Middleware & More: GraphQL, Apollo Server, RabbitMQ 📡 Authentication: From Passport.js to OAuth2 🔐 Engaging with me promises a smooth and efficient collaboration. Ready to jump-start our journey together and make your project a success?
    Featured Skill Object Oriented Programming (OOP)
    Sequelize
    Amazon S3
    Fastify
    Node.js
    ExpressJS
    Firebase
    Angular
    NestJS
    Next.js
    Object-Oriented Programming
    Redux
    React
    PostgreSQL
  • $40 hourly
    Prototyping | VR/XR | Unity2D/3D | Programming C# | Game Development 🔥 5 years experience ⭐️ 5 stars rating 🏆 𝟑𝟬+ 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗲𝗱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 🦾 any complexity and project size ★★★★★"Loved working with Yura. Clear communication, fast turnaround, great results. Highly recommend!" ★★★★★ “Yura demonstrated high professionalism and experience working first on the prototype and then on the alpha version of my mobile game.” 🎯 If you're seeking someone to bring your vision to life, feel free to reach out to me via messages. Let's collaborate and build something great—I'm confident I can assist you in achieving your goals. ⭐️ Expertise ranging from hyper-casual and match-3 games to deck building and visual novels ⭐️ Five years of experience in the industry ⭐️ You will get what you need fast with good quality ⭐️ You can expect fast delivery of high-quality results tailored to your needs ⭐️ Ongoing or new project ⭐️ Speed, quality, results ⭐️ Available online 24/7 for your convenience ▔▔▔▔ 🎲 𝐆𝐄𝐍𝐑𝐄𝐒 : 🌍 𝙈𝙪𝙡𝙩𝙞𝙥𝙡𝙖𝙮𝙚𝙧 🧩 𝘾𝙖𝙨𝙪𝙖𝙡, 𝙈𝙖𝙩𝙘𝙝 3, 𝙋𝙪𝙯𝙯𝙡𝙚, 𝙋𝙪𝙯𝙯𝙡𝙚 𝙋𝙡𝙖𝙩𝙛𝙤𝙧𝙢𝙚𝙧, 𝐈𝐳𝐨𝐦𝐞𝐭𝐫𝐢𝐜 🕹️ 𝙍𝙋𝙂, 𝙏𝙤𝙬𝙚𝙧 𝘿𝙚𝙛𝙚𝙣𝙨𝙚, 𝘼𝙘𝙩𝙞𝙤𝙣 🔫 𝙎𝙝𝙤𝙤𝙩𝙚𝙧𝙨, 𝙈𝙈𝙊, 𝙎𝙩𝙧𝙖𝙩𝙚𝙜𝙮 🏝️ 𝙎𝙪𝙧𝙫𝙞𝙫𝙖𝙡, 𝙃𝙤𝙧𝙧𝙤𝙧, 𝘼𝙙𝙫𝙚𝙣𝙩𝙪𝙧𝙚 ✈️ 𝙎𝙞𝙢𝙪𝙡𝙖𝙩𝙤𝙧, 𝙍𝙤𝙜𝙪𝙚𝙡𝙞𝙠𝙚𝙨, 𝘽𝙖𝙩𝙩𝙡𝙚 𝙍𝙤𝙮𝙖𝙡𝙚 ▔▔▔▔ 👨‍💻 𝐒𝐊𝐈𝐋𝐋𝐒: ✅ C#, C++, Python ✅ Unity ✅ VR/XR ✅ Plug-ins (Unity Ads, AdMob, Firebase, etc.); ✅ Particles ✅ UI/UX ✅ Animations ✅ Node system ✅ Multiplayer ✅ Prototyping ✅ Mobile games ✅ PC games ✅ Creativity ▔▔▔▔ Interactive stories | Visual novels 🔎I know what my client wants: ✅ Create a system for visual novels that can be reused across multiple games. This way, we can develop one system that supports an infinite number of stories, avoiding the need to reinvent the wheel. We only need to expand specific mechanics for special features, making it more practical and cost-effective. ✅ Writers are the core of interactive novels. Let’s make their job easier with a convenient, easy-to-use visual novel engine. ✅ Your writers want to see changes as soon as possible, ideally on the same day that changes are applied. They shouldn’t have to wait several days to see the results in the project. ✅ Visual novels involve collaboration between very different specialties—writers, artists (backgrounds, props, characters), and programmers. Your novel engine must be easy to use for everyone involved. ✅ If you see a game-changing idea, let's discuss it. There are many opportunities to create better stories. ▔▔▔▔ ⚙️𝐓𝐎𝐎𝐋𝐒: 👨‍💻 IDE: Visual Studio 2022 🚀 Game Engine: Unity 🌐 Multiplayer: Photon (Pun 2), Mirror 🎮 DoTween, Cinemachine, Odin, Puppet Master, etc 💉 Injector: Extenject 🛠️ ECS: Entitas 🧰 OOP, SOLID, Design Patterns 🗂️ Ver. Controll: Git, GitHub, GitLab ▶️ Google Play Developer Console 🎨 Figma, Photoshop, Blender 📈 Atlassian: Jira, Trello
    Featured Skill Object Oriented Programming (OOP)
    Prototyping
    Jira
    Photon Unity Networking
    Firebase
    .NET Framework
    Facebook SDK
    Programming Bug Fix
    Trello
    C#
    Object-Oriented Programming
    PC Game
    Mobile Game
    Unity
    AR & VR Development
    Game Development
  • $35 hourly
    Hi there! I'm software developer that interested in web development, highload systems, data analysis and a lot of other cool things, IT and open-source enthusiast. Today I’m focusing on Python development as backend engineer and looking for a new great stuff from JavaScript world as young Padawan. Generally, I was starting my “professional” life as a dude that created HTML templates with tables and images. But today, I’m the part of the talented Gaming Company Team and doing casino mobile games in a highly distributed server environment based in Amazon Web Services. Now I'm ready for new challenges: build IT community in my hometown Zaporizhzhya (meetups, users groups, conferences), try the role of the teacher/mentor, learn more in a few new areas of Software Development. More info - http://erlrange.com
    Featured Skill Object Oriented Programming (OOP)
    Python
    Object-Oriented Programming
    JavaScript
    MongoDB
    Twitter/X API
    Facebook Development
    MySQL
    Django
    Flask
    CSS
  • $31 hourly
    I have discovered for myself a good opportunity to work on the advanced and uncommon projects here in oDesk. My objective is creative, out of the ordinary, highly loaded and scalable projects to develop. I am looking for long-term relationships in project's development area in which I can use my creative forces on 200%. Because it is not possible to do that without studying something new I am also struggling to know more about latest technologies and innovations in Web development.
    Featured Skill Object Oriented Programming (OOP)
    Twitter/X Bootstrap
    Google Calendar
    Cubecart
    Facebook Development
    Twitter/X API
    Object-Oriented Programming
    Google Maps API
    jQuery
    HTML
    AJAX
    CSS
    PHP
    MySQL
    JavaScript
    CodeIgniter
  • $70 hourly
    WordPress Senior / Fullstack Web, 10+ years. Premium websites. WordPress' plugins and templates. Web applications. Why me? • Top Rated freelancer at UpWork (2020); • math degree and strong programming skills; • design skills, good eye and developed sense of beauty; • strong soft skills; • great team player and passionate developer. Look forward to working with you!
    Featured Skill Object Oriented Programming (OOP)
    UX & UI
    WordPress e-Commerce
    User Experience Design
    WooCommerce
    Internet of Things
    Progressive Web App
    Object-Oriented Programming
    CSS
    WordPress
    JavaScript
    PHP
  • $55 hourly
    Always your best friend to solve your problems and make your idea come true! Who are that freelancer? Well, I am skilled web-developer and freelancer. My goal is to deliver simple and elegant solutions that suit your goals. I have developed a wide range of websites using: - PHP (5.6-7.3 only): Symfony 2, Doctrine, Laravel, YII, CodeIgniter, Kohana 3 - JavaScript: Require.js, Knockout.js MVVM, Bower.js, jQuery, Mootools vanilla.js, ember.js, AJAX (almost all modern sites/apps need this technology) - Node.js: harmony, express.js, hapi, koa, Sails.js, Derby, Meteor, Socket.IO, Nunjucks.js, HTML5 boilerplate - HTML (5 too): bootstrap (2-4), montage.js, less, sass - MySQL, PgSQL, NoSQL - LAMP / LNMP As you can see - all of this knowledge allows me to choose from a very wide range of instruments. I have experience in developing projects of any complexity, ranging from ordinary business pages to huge portals. My experience also includes moving sites from one hosting/server to another, backing up (My)SQL databases, installing and upgrading sites and servers administration. I don't want you spent a lot time for reading my description. Time - is money. Lets work. ;)
    Featured Skill Object Oriented Programming (OOP)
    MySQL
    HTML
    Sphinx
    AJAX
    Linux System Administration
    HTML5
    CSS 3
    Kohana
    Object-Oriented Programming
    MooTools
    Symfony
    XML
    jQuery
    PHP
    JavaScript
  • $40 hourly
    I'm talented and highly educated web developer with more than 7 years of experience. I' My core competency lies in creating complex solutions for startup companies and innovative businesses using cutting-edge technologies such PHP, MySQL, HTML5/CSS, JavaScript, JQuery, Ajax and Zend2, CodeIgniter ,YII2 and Laravel frameworks. Always pay attention to code style and documentation. I also have solid skills and strong experience in the following areas: - Database design, performance optimization, finding slow queries and bottlenecks - Building complex queries, stored procedures and functions - API implementation for mobile and financial application - Payment gateway integrations: PayPal, Authorize.NET, 2Checkout - Building tests (Unit testing, Codeception) - NodeJs/Angular2 applications developing
    Featured Skill Object Oriented Programming (OOP)
    MySQL Programming
    Object-Oriented Programming
    JavaScript
    PHP
    CodeIgniter
    CSS 3
    Laminas
    HTML5
    AJAX
    jQuery
  • $40 hourly
    Hello, I'm a top rated android developer with 5+ years of experience (100% success story). I write clean, scalable and testable code, easy to mantain, refactor or expand for new features. I have experience in: - Material design - retrofit - SQLite - Firebase - GCM/FCM - Google Play Services - Creating custom views with different complexity - Payment integration - a lot of commonly used libraries
    Featured Skill Object Oriented Programming (OOP)
    Game Development
    Object-Oriented Programming
    Mobile App Development
    Android App Development
    C#
    Kotlin
    Firebase
    Android
    Java
  • $50 hourly
    My name is Yevhen and I`m a Full-Stack Developer (Node, React.js). About me: * 8+ years proven track record (Web Application Development) * Solid experience in the development of user-friendly management solutions, content control tools, commenting platforms, review collection systems, real estate portals * Tech Stack: JavaScript, React, HandleBars, Catberry, Node.js, Express, hapi.js, Sails.js, PostgreSQL, Couchbase, ElasticSearch, Redis, MongoDB, Apache Kafka, RabbitMQ, SQS * Segments: E-commerce, ERP, Real Estate, CRM * Perfectly adapted to your business processes and can offer you my ideas for implementation Highlighted skills: Web development, Mobile development, Application Development, JavaScript (JS), Front-end Development, Back-end Development, React (ReactJS, React.js), Node.js (Node, NodeJS), TypeScript (Type Script)
    Featured Skill Object Oriented Programming (OOP)
    React Native
    Object-Oriented Programming
    RESTful Architecture
    Node.js
    React
    MongoDB
    GraphQL
    JavaScript
    PostgreSQL
  • $40 hourly
    Currently working as Senior software developer/System Achitect/System analyst in Ukrainian Software Company, I am looking for application of my skills and experience for relevant professional job offers (long-term contractual opportunities are preferred). Offering:  a) over twenty years winning experience in software design, development and life-cycle implementation;  b) particularly over eight years of C#, .NET, MS SQL, Web development experience; c) delivering results within time & udget constraints;  experience working in small and middle size international teams;  d) as well as a big practice in rendering of consulting, configuration and usability management services I am willing apply that well, for prospective customer(s), creating new opportunities for grow
    Featured Skill Object Oriented Programming (OOP)
    Software Architecture
    API
    ASP.NET Core
    .NET Core
    Object-Oriented Programming
    SQL Programming
    Web Development
    Database Modeling
    Systems Development
    ASP.NET
    JavaScript
    XML
    .NET Framework
    C#
  • $70 hourly
    Web solutions of any complexity. Attention to details from brief to code delivery. · Laravel framework on top with Livewire, Vue or React · Opencart (logic modifications, themes, extensions etc.) · E-Commerce & Payment gateways (Stripe, PayPal, PayU etc) · REST APIs (creation / modification / maintaining) · Social auth · Web server environment (setup / maintaining) · Custom lightweight PHP scripts · Interactive Bots
    Featured Skill Object Oriented Programming (OOP)
    Swift
    OpenCart
    Object-Oriented Programming
    Database Architecture
    API Development
    PHP
    RESTful Architecture
    Laravel
    Ecommerce Website
    Vue.js
    Git
    WordPress
    Custom PHP
  • $44 hourly
    I believe that a clean and beautiful code is backed up not only by the technical side, but a purpose driven decision to try, challenge yourself and finally accomplish it with all due attitude, quality and creativity thus meeting clients` requirements. This character determines both my team and me.
    Featured Skill Object Oriented Programming (OOP)
    JSON
    Internet of Things
    Git
    Object-Oriented Programming
    Android App Development
    iOS Development
    In-App Purchases
    Swift
    Java
    SQLite
  • $40 hourly
    Software developer specializing in the backend, frontend, UI development, computer hacking. A man who loves UNIX, Networking, TeX, and C. Free-software enthusiast. Interested in devising a better problem-solving method for challenging tasks, and learning new technologies and tools if the need arises.
    Featured Skill Object Oriented Programming (OOP)
    DevOps
    Docker
    Network Administration
    Network Software
    FreeBSD
    Gentoo Linux Operating System
    Linux
    Linux System Administration
    Unix System Administration
    LaTeX
    Object-Oriented Programming
    Bash
    Python
    C++
    C
  • $33 hourly
    I am a web developer experienced in front/back-end development. PHP (Laravel), MySQL, JavaScript (jQuery, Vue.js) are my favorite instruments. I have experience with database query optimization and deploying sites. I am comfortable with Linux and Docker. Have good experience in API development. Postman is an excellent instrument to test API. I like object-oriented programing, familiar with programming patterns, and like to write readable and well-structured code covered by tests. I work mostly in Laravel and have big experience in it (about 5 years). Have experience with big projects and commands. If you like to get fast and well-done work, if you want a responsible and attentive details developer, you can hire me. I think we will have a nice work experience together. Contact me, and I'll be glad to talk about your project!
    Featured Skill Object Oriented Programming (OOP)
    API
    Object-Oriented Programming
    API Development
    Vue.js
    MySQL
    Laravel
    React
    Web Development
    PHP
    JavaScript
    API Integration
    HTML
    jQuery
    TypeScript
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.