Hire the best JSON Developers in Warsaw, PL

Check out JSON Developers in Warsaw, PL with the skills you need for your next job.
  • $45 hourly
    I ensure a quick turnaround and the ability to offer great quality animations under short deadlines. "...Her technical skills are more than I expected and her creativity was something special." "...Irina has an incredible talent too for observing animals and bringing them to life in beautiful, delightful ways, which is exactly what I was looking for. Furthermore, I found her to be very reliable, trustworthy, hardworking, and 100% communicative. She would send me draft animations to look at, I'd give her feedback overnight, and just a few hours later she had brand new animations ready." I draw individually all illustrations for your animation myself. Why me?: ✅ My expertise covers After Effects, Adobe Illustrator, Adobe Photoshop, and freestyle drawing and sketching. ✅ Top Rated Motion designer ✅ Creativity, efficiency and always meet deadlines ✅ High-quality work ✅ Regular Communication ✅ Keep attention to details I will help your animation project run successfully! Cheers, Irina
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    Adobe After Effects
    Morphing
    Animated GIF
    SVG
    Video Animation
    Logo Animation
    Character Animation
    Video Intro & Outro
    Spine 2D
    2D Animation
    UI Animation
    Lottie
    Motion Design
    GIF
    Animation
  • $56 hourly
    Upwork Top 5%. Are you looking for a detail-oriented and meticulous Frontend developer? If so, you are at the right place! Here is what my clients think about me: 💬 "Firdavs was a pleasure to work with, the work was done efficiently and to a great standard. Would definitely work with him again, he is responsible and gets back quickly" 💬 "He’s quick, resilient and technically sound. Felt like we were working with someone from our team. Always available and top-notch work." Key Facts: ✔️ Worked and completed over 100 projects; ✔️ Have plugins and custom themes for sale in marketplaces; ✔️ Expert in Javascript frameworks (React JS/ React Native) ✔️ Over 3 years of solid coding experience. Do you need to build Progressive Web Apps or Single-page applications? I am here to help you! Few things that I can do: ✔️ Creating UI with Next.js and React js; ✔️ Redux, Firebase, Sanity.io, Stripe, Prismic, and other great tools; ✔️ React-router, Material UI, Styled-components, Tailwind; ✔️ Single page applications, Progressive web applications; I can offer you: ✔️ Pixel-perfect web pages ✔️ Building UI with SPAs ✔️ Building whole CRMs from scratch ✔️ Architecturing the whole structure of the website from scratch ✔️ Refactoring old websites and making improvements on the existing applications/projects I achieve high-quality products with a proven software development process. Take a look at my profile and, let's chat!
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    Business with 1-9 Employees
    HTML
    API
    HTML5
    XHTML
    Material UI
    PSD to HTML
    Bootstrap
    Git
    React
    RESTful API
    web3.js
    CSS
    JavaScript
  • $40 hourly
    3+ years in Motion design & Illustration INTRO/EXPLAINER video/LOTTIE/2d Motion graphics/LOGO Animation/ any other moving stuff you can find here! Animated visual graphic attracts the attention of users and customers for 100%. Professional one attracts for 1000%. I'm here to tell your story through professional video/animation/motion graphics.
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    Character Animation
    Motion Design
    Social Media Advertising
    Logo Animation
    Animated Explainer
    Lottie
    2D Animation
    Explainer Video
    Video Intro & Outro
    Animated GIF
    Motion Graphics
    Illustration
    UI Animation
    Vector Art
  • $50 hourly
    I am a software engineer with a solid background in high performance business applications, automation and distributed systems. With great communication business skills with multiple companies, I am passionate about maximizing my team's full potential while improving work-life balance and overall joy. I am very motivated and active, focused on achieving goals, open-minded and communicative.
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    Airtable
    Automation Framework
    Webflow
    Business Presentation
    Firebase
    API
    ActionScript
    Intuit QuickBooks
    Automation
    Python
    Selenium
    Zapier
    JavaScript
    Make.com
  • $35 hourly
    I am experienced in developing software solutions for AEC professionals. - Python automation - C# plugin development -Full-stack webapp development using Typescript, Javascript, Python, React, Next.js, AWS, MongoDB, Firebase, Lambda functions, API gateway, REST API, Flask - Three.js, IFC.js, Keras, Numpy, Pandas, SciPy and other libraries - Carbon Footprint, LCA, GHG emissions tracking and estimation (One Click LCA, LCA Byg, custom plugins) - Environmental optimization (Daylight, Energy etc.) - BIM, IFC Regular communication in the development process Consulting on Revit, Grasshopper and other AEC sector software development.
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    Next.js
    React
    IFC
    JavaScript
    Product Development
    Grasshopper 3D
    Software Development
    C#
    API
    Python
    TypeScript
  • $40 hourly
    I'm full stack software developer with more than 18 years experience. ✨✨✨ I've built over 10 large CRM/ERP systems from scratch using C# .NET. I have very large experience in data scraping and data collection tools. I've done over 100 different scrapers and bots for different purposes. Last 12+ years I provide services of web apps development using PHP, JavaScript, JQuery, CSS3. I know well all popular content management systems such as WordPress, PrestaShop, Shopify and others. I've used successfully Symfony and Laravel platforms in my projects. I deeply faced with all popular databases MySQL, MS SQL, SQLite. I have strong skills in Linux and Windows Server administrate.
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    Web Application
    Windows App Development
    MySQL
    .NET Framework
    C#
    SQL
    Desktop Application
    jQuery
    Selenium
    JavaScript
    Data Scraping
    PHP
    Data Mining
  • $50 hourly
    Android development and maintenance Complete applications, prototypes, proof of concept, maintenance, legacy support Integration with popular social media platforms Google resources e.g. Maps, Analytics, ads E-commerce, in-app purchases, point-of-sale tools Technology: - Programming languages: Java, Kotlin, SQL - Architecture: MVVM, MVP, clean code - Professional software engineering tools and methodologies
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    RESTful Architecture
    JavaFX
    Git
    Kotlin
    Java
    Android App Development
    In-App Advertising
    Smartphone
    Android SDK
    API Integration
    SQLite Programming
    Chat & Messaging Software
    Android
  • $16 hourly
    I possess a strong motivation and the ability to tackle complex problems by leveraging appropriate tools and resources at my disposal. With proficient skills in HTML, CSS, and JavaScript, I am well-versed in working with React and Redux frameworks. Additionally, my expertise extends to Node.js and MySQL, allowing me to efficiently handle backend development and database management tasks. Throughout my professional journey, I have demonstrated a high level of competence in utilizing these technologies to create robust and scalable web applications. My solid understanding of HTML, CSS, and JavaScript enables me to craft engaging and visually appealing user interfaces. Moreover, my proficiency in React and Redux empowers me to build dynamic and interactive front-end components that enhance user experiences. When it comes to backend development, my expertise in Node.js allows me to develop server-side applications with efficiency and reliability. I am adept at utilizing Node.js to build RESTful APIs, handle server-side logic, and integrate with various databases. In particular, my proficiency in MySQL ensures effective data management and seamless integration of database functionalities. Overall, my comprehensive skill set in HTML, CSS, JavaScript, React, Redux, Node.js, and MySQL equips me with the necessary tools to excel in developing robust, user-friendly, and efficient web applications. I am driven by a strong motivation to deliver high-quality solutions while effectively addressing complex challenges.
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    Graphic Design
    WordPress Theme
    Adaptive Web Design
    BEM
    Adobe Illustrator
    Figma
    MySQL
    CSS 3
    JavaScript
    HTML5
    Redux
    React
    Node.js
  • $30 hourly
    I am an experienced and motivated strong senior iOS developer, interested in skillfully creating creative mobile applications and utilities. I understand the importance of creating easy-to-read, reusable, and easily maintained source code. I constantly strive to learn new technologies and look for ways to improve myself in this rapidly changing industry. My strengths and skills: - 7 years of iOS development - Degree in Computer Science - Experience developer native iOS application - Knowledge of APIs and design patterns (MVC, MVP etc) - Push notifications - REST API development skills - Experience MapKit, MapBox - Stripe - Firebase - Firestore - Crashlytics - In-App purchases - etc
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    Websockets
    SnapKit
    Mixpanel
    Mapbox
    MapKit
    Push Notifications
    iOS Development
    iOS
    Firebase
    Alamofire
    Swift
  • $40 hourly
    I'm a Motion Designer experienced in production high quality 2D animated videos for all types of companies and startups.
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    Video Editing
    Adobe Photoshop
    Adobe Illustrator
    Adobe After Effects
    Logo Animation
    Lottie
    UI Animation
    2D Animation
    Character
  • $999 hourly
    Help people get to know you at a glance. What work do you do best? Tell them clearly, using paragraphs or bullet points. You can always edit later; just make sure you proofread now. Help people get to know you at a glance. What work do you do best? Tell them clearly, using paragraphs or bullet points. You can always edit later; just make sure you proofread now.
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    PHP
    PHP Script
    Custom PHP
    Laravel
  • $15 hourly
    Email: yegor.laba@gmail.com Skype: labaegor1998 GitHub: github.com/EgorLaba I have almost 3 years of professional experience and in that time I have gained responsibility and attention to detail. I always strive to do my job to the best of my ability. Empathy, feeling people and details is what helps me to quickly find solutions to a lot of issues. Rationality and understanding of my emotions gives me the ability to not only solve a problem logically but also to approach it as creatively as possible from an unexpected side. Working in a team brings me great satisfaction and motivation, inspiring me to new achievements. I am the person who is passionately engaged in the process of programming, it is like solving incredible problems and be something like Sherlock Holmes, who after collecting all the incredible data finds the criminal (bugs).
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    Core Graphics
    Figma
    Architecture
    Git
    Software Debugging
    Object-Oriented Programming
    Mobile App
    GitHub
    Apple Xcode
    Firebase
    UIKit
    Swift
  • $5 hourly
    I'm a highly motivated self-taught java developer who's not afraid of new technologies. Programming is my passion so work is a plesure for me. It allows me to be efficient, has an ongoing desire for growth to become a better programmer, and keep fun of coding. I primarly focus on building backend application using Java, Spring, Hibernate, MySQL.
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    MySQL Programming
    Spring Boot
    XML
    Atlassian Bamboo
    GitLab
    Git
    Mockito
    JUnit
    REST API
    RESTful API
    Apache Maven
    Hibernate
    Java
  • $10 hourly
    I am a training QA engineer, capable of learning and with a great desire to develop. If you need to test a program or website manually or automatically, I can help. I'm looking for experience in interesting projects.
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    Visual Studio Team Services
    Git
    Kanban Methodology
    Scrum
    API
    Selenium
    TestRail
    Microsoft SQL Server
    Trello
    Jira
    Fiddler
    Postman
    CSS
    HTML
  • $8 hourly
    🚀 I'm a web developer with a passion for the world of code and technology. Here is the technology stack I use for development: Front-End: • HTML + CSS (basic SASS) + Bootstrap • AJAX, JSON • JavaScript, TypeScript, JQuery, React Back-End: • PHP Laravel • C# ASP.NET • WordPress Databases: • MySQL • MSSQL • PostgreSQL • MongoDB Other: • Git • Linux • Apache • Nginx • Web Sockets 👀 If you have interesting ideas or projects on the web development part, contact me. I'd be happy to take a look at your project and discuss how I can contribute!
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    API Development
    API Integration
    Web API
    Web Application
    MySQL
    Laravel
    jQuery
    JavaScript
    Git
    ASP.NET MVC
    ASP.NET Core
    ASP.NET
    C#
    PHP
  • $16 hourly
    PROFESSIONAL SUMMARY Hello! My name is Kate. I am a Front-End developer with 5 years of experience in the commercial sphere. I can create high-quality solutions using key skills: HTML5/CSS3, Javascript, JQuery, Magento 2, Shopify, Shopware 6, PrestaShop, WordPress, there are other skills, they are described in my resume. Highly organized and attentive to detail. Able to analyze data, develop strategies, and propose solutions to complex problems. I strive to use skills and knowledge to contribute to the success of the team.
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    Figma
    jQuery
    WordPress
    Shopware
    PrestaShop
    Bootstrap
    React
    Magento 2
    Sass
    LeSS Framework
    CSS
    HTML
    JavaScript
    Git
  • $30 hourly
    5 years of object - oriented programming knowledge and experience in developing Professional Web applications and Enterprise solutions with complete SDLC from requirement gathering, analysis, designing, developing, testing, and deployment. Using Web Technologies like HTML5, CSS3, JavaScript, Ajax, React, Redux, Node, React Native, Angular, SAAS, ECMAScript5/6, and jQuery, DOM, JSON, XML and AJAX. Expertise in modern web architecture using various advanced JavaScript frameworks and libraries like Angular.js, Node.js, React.js/Redux, React Native, Bootstrap, Ember.js, Responsive web design (RWD). Working experience on ES5, ES6, ES7 and Typescript features for handling asynchronous data requests. Experience in developing MERN (MongoDB 3x, Express.js, React.js and Node.js) and MEAN (MongoDB 3x, Express JS, Angular JS 1.x and Node JS) stack application. Experience in developing single page application in MERN Stack. Experienced in building cross browser compatibility applications using HTML5 and CSS3. Hands on expertise on Redux, Flux, Webpack JavaScript based applications Hands on expertise in developing the Single Page Applications (SPAs) using React.js and Model View Controller (MVC) frameworks such as Angular.js. Extensively used the JavaScript frameworks jQuery. Experienced in designing Using Web Standards. Pleasant experience working with Bootstrap and CSS3 media queries to support Responsive Web Design (RWD) Expertise using React Components, Reducers, and Actions to implement MVC and Redux architecture and having experience with middleware. Good Understanding of Document Object Model (DOM) and DOM Functions. Extensively used package management tools such as NPM, Yarn and Bower to manage the modules and used it to install useful tools such as Grunt, Express, mongoose, mongo.js, and body-parser. Hands on experience with build tools such as webpack and Grunt. Experienced with version control tools such as GIT as project management tool. Experience working with various methodologies such as AGILE, SCRUM, and TDD. Experience in database programming using MySQL, Postgres 9.3 and proficiency in developing SQL. Experience developing web application on top of platform using Node.js, Express framework, Grunt, Gulp, Sync, fs, Winston npm modules. Experience working on cross-browser compatibility of UI for Firefox, Chrome, IE and Safari browsers. Experienced in Relational database such as SQL Server, MySQL and Firebase and Non-Relational database MongoDB. Good Working Knowledge on Jasmine, Enzyme and Jest.
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    Amazon Web Services
    Python
    Next.js
    CSS
    jQuery
    HTML
    PostgreSQL
    SQL
    REST API
    React Native
    Node.js
    TypeScript
    JavaScript
    React
  • $15 hourly
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    MA
    Yodiz
    Arrow
  • $10 hourly
    I’m a developer experienced in developing casino games clients on Java and Typescript/JS languages. Highly familiar with frontend applications development and support. Ready to extend my knowledges and portfolio with your projects :)
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    Application
    TypeScript
    JavaFX
    Java
    Product Development
    Software Development
    Desktop Application
  • $8 hourly
    I'm a Java developer with a fundamental understanding of web technologies and full stack development, ready to create or contribute to your website despite the actual difficulties. Know Java, Angular and SQL. Regular communication is important for project consistency, so let's keep in touch.
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    PostgreSQL
    MySQL
    Apache Maven
    TypeScript
    Kubernetes
    Docker
    Rest Assured
    REST API
    Integration Testing
    Spring Boot
    Angular
    Java
    Database
    Software Development
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