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Zlatko D.

Ohrid, North Macedonia

$30/hr
5.0
802 jobs
Full-stack developer with expertise in Next.js, React, WordPress, and PHP. I build modern, scalable web applications and custom websites. Skilled in TypeScript, MySQL, and more. Let's bring your project to life!
  • JSON
  • CSS
  • CSS 3
  • HTML5
  • jQuery
  • WordPress
  • Bootstrap
  • JavaScript
  • WordPress Plugin
  • MySQL
  • CodeIgniter
  • MySQL Programming
  • React Native
Amy H.

Madison, United States

$120/hr
5.0
322 jobs
With an extensive Upwork client history profile and having been Expert-vetted by Upwork as being in the top 1% of freelancers, I look forward to working with you soon! I am an integrations expert and am able to use tools such as Zapier, Microsoft Power Automate (formerly called Flow), and Make (formerly called Integromat), to create API integrations between many different applications. I have a keen understanding of backend data and how to easily get relevant information from one system to another. Integrating systems on the backend helps business workflow to be simplistic, efficient, and fast. I have been working on integrations since 2016, and have linked together numerous CRMs, accounting systems, marketing systems, spreadsheets, etc in a variety of ways, some simple and some extremely complex. Given API documentation, I am able to build custom connections, triggers, and actions in Zapier for many cloud based applications that do not yet have Zapier integration. Some of my other skills include Javascript, Airtable, Google Sheets, Google Forms, Fillable PDFs, Softr, JotForm, Typeform, Fillout Forms, X2CRM, Excel, Canvas, Planning Center, TeamUnify, Amateur Radio Operator, French language. As the owner of Glaive Consulting, I understand the needs of the small business owner to automate as much of the business as possible to allow focus on client work. Task tracking, time tracking and invoicing and customer followup are among some workflows that I have optimized for my business. Let me help you do the same!
  • JSON
  • SQL
  • Zapier
  • Jotform
  • HubSpot
  • API Integration
  • API
  • Relational Database
  • Automated Workflow
  • Report Writing
  • Make.com
  • Airtable
  • Microsoft Power Automate
  • Customer Relationship Management
  • Automation
Alaa E.

Aga City, Egypt

$50/hr
5.0
182 jobs
Hi, my name is Alaa and I am an expert in Motion designer/Animator. I would love to have the opportunity to work your project. My expertise spans across various fields, including:. Check out my reel. Shoot me a message, and let's make something awesome together! Services: - logo animation; -Lottie/Bodymovin Animations - 2D animation; - Slide shows; - Explainer videos; - Motion graphics animation; - Promotional videos; - Web site presentations; I create animation videos using: Adobe After Effects, Adobe Illustrator, Adobe Photoshop.
  • JSON
  • Animated Explainer
  • Adobe After Effects
  • Motion Graphics
  • Animated GIF
  • Adobe Illustrator
  • 2D Animation
  • Logo Animation
  • Logo Design
  • Video Intro & Outro
  • Vector Graphic
  • Lottie
  • Video Animation
  • Explainer Video
  • GIF
  • Character Animation
Ferhat K.

Istanbul, Turkey

$42/hr
5.0
120 jobs
Are you searching for a talented motion designer to bring life to your graphics with the perfect format? Look no further! As a 2D motion designer and expert in Lottie animations, I have completed over 200 projects with a high success rate, as evidenced by the positive reviews on my Upwork profile. Lottie, a JSON-based animation format, is ideal for use on any platform. These small files offer seamless performance on any device and are easily scalable without sacrificing quality. In addition to Lottie/JSON and Bodymovin, I specialize in creating custom and unique animations, such as: ✔️ Logo animations ✔️ Loader animations ✔️ Splash screen animations ✔️ Intro/Outro animations ✔️ Illustration animations ✔️ Onboarding screen animation Plus, I also provide optimized Lottie files, reducing file size by up to 30%. Feel free to contact me for a chat and live feedback on your project. Let's bring your vision to life with engaging animations.
  • JSON
  • Adobe Illustrator
  • Lottie
  • 2D Animation
  • Motion Graphics
  • Motion Design
  • Animated GIF
  • Adobe After Effects
  • Flat Animation
  • Logo Animation
  • UI Animation
  • Video Intro & Outro
Khalil M.

Islamabad, Pakistan

$50/hr
5.0
109 jobs
I am a highly skilled Full-Stack Developer with over a decade of experience delivering scalable, high-performance applications across backend, cloud, and enterprise solutions. I have worked with global clients, including the United Nations, Guest supply, and multiple startups, building solutions for AI-powered applications, cloud automation, APIs, enterprise integrations, and performance optimization. 💡 What I Offer: 🔹 Backend Expertise – .NET (Core & Full Framework), Java, Node.js, Python, GoLang 🔹 Frontend Proficiency – React.js, Vue.js, Angular 🔹 Cloud & DevOps – Azure, AWS, GCP, Docker, Kubernetes, Terraform, CI/CD 🔹 Database Management – SQL Server, PostgreSQL, MySQL, MongoDB, Azure SQL 🔹 API Development – REST,SOAP, GraphQL, OAuth, Webhooks, Microservices 🔹 Automation & AI – Enterprise AI, Web Scraping, Bots, Performance Optimization 🚀 Why Work With Me? ✔ Proven Track Record – Worked with enterprise clients & startups on complex, large-scale applications. ✔ Full-Stack & Cloud Expertise – Backend-heavy enterprise app development with cloud automation. ✔ Scalable & High-Performance Solutions – Specialized in building optimized, production-ready applications. ✔ Seamless Communication & Collaboration – Proactive, reliable, and committed to delivering quality work on time. 🔹 Need a reliable, experienced developer for your project? Let's discuss how I can help!
  • JSON
  • NoSQL Database
  • JavaScript
  • ASP.NET Core
  • Python
  • SOAP
  • SQL
  • C#
  • API Integration
  • Automation
  • API Development
  • Cloud Architecture
  • React
  • Node.js
  • RESTful Architecture
Milan Š.

Kamnik, Slovenia

$70/hr
5.0
73 jobs
With over 25 years of international experience in software development, quality assurance, and project management, I specialize in delivering top-notch solutions. My expertise spans software automation, performance optimization, and database programming, with a focus on storage and meter data management. Key Technologies: Domains: Data/Web Scraping, Integration, Reporting, Automation, Optimization, Analytics, GIS, Meter Data Management Programming Languages: Python, Java, SQL, HTML, JavaScript, PHP, C/C++ Scripting Languages: Python, Perl, PowerShell Platforms: Linux, Windows, Arduino, Raspberry Pi Environments: PyCharm, SQL Developer, Eclipse, Salesforce, MS Office Suite Databases: Oracle, MS SQL, MySQL/MariaDB, Postgres Frameworks: React, Node Career Highlights: Developed web scraping tools, communication protocols, and automation solutions for various industries. Designed and operated multi-GPU cryptocurrency mining rigs. Created a customizable automated testing framework for embedded Linux-based power management solutions. Implemented integration and reporting modules for leading European clean energy storage companies. Consulted on performance testing environments for major utility companies. Awards and Recognition: Employee of the Year 2001, Hermes SoftLab d.d. Received multiple client commendations for exceptional project performance. Languages: Slovenian: Native/Active English: Active German: Passive Serbo-Croatian: Active Hobbies: Technical literature, winemaking, cycling, skiing, photography, following science and technology developments. Education: Bachelor's degree in Computer Science from the University of Ljubljana. Licenses & Trainings: Cryptocurrency trading & mining optimization. Advanced Python and Java programming. Expertise in IEE/SAP integration, cybersecurity, and GIS applications.
  • JSON
  • Data Scraping
  • Raspberry Pi
  • Scripts & Utilities
  • System Automation
  • Perl
  • Automation
  • SQL Programming
  • Selenium
  • Scripting
  • Python
  • Data Analysis
  • XML
  • Arduino
  • Testing

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JSON FAQs

What is JSON?

JSON (JavaScript Object Notation) is a data interchange format that has vastly improved server-to-browser communications—especially when it comes to AJAX. It’s a language that’s similar to XML, syntactically identical to JavaScript code, and the fastest data-interchange format to be used with AJAX (Asynchronous JavaScript + XML), making it not far behind HTML when it comes to skills no front-end developer should go without.

JSON is a syntax designed to store and move data that’s sent between server and browser. It’s similar to a markup language in its syntax and how it’s used, but it’s not a markup language at its core. If you think of how XML functions in the scheme of a site—XML describes elements of data, while HTML displays that data—JSON does the same thing, just in a more streamlined way, both for the developer and the browser.

Why hire a JSON specialist?

A front-end developer who specialists in JSON can help you to create interactive, high-performance sites and apps. 

JSON was the first format that allowed servers and browsers to communicate without a browser plug-in like Flash or Java. But where JSON really shines—and sets the standard—is how it functions within AJAX operations. AJAX essentially allows parts of a web page to be updated without requiring a full-page refresh, something that vastly changed the way users interact with web applications. It immediately solved problems that were caused by limited bandwidth, prevented server overload, and kept things from slowing down in the app.

AJAX was originally created in the mid-2000s with XML as its data interchange format. In that first model, after a page was loaded, new data could be called up from the server using XML as the data interchange format. JSON has improved the data retrieval process by being front-end compatible by nature with its JavaScript roots. With JSON and JSON Web Services, AJAX runs faster—it’s instantaneous and highly efficient.

JSON’s core differentiator is that it’s written in JavaScript syntax, but it’s text-only. This allows it to logically skip a front-end step: Whereas XML requires a parser to be read by a JavaScript program, JSON doesn’t require any extra software. It’s a subset of JavaScript, and so it’s compatible with the front end, right off the bat. A JavaScript program will convert JSON elements directly into JavaScript objects.

Like XML, JSON:

  • Is “self-describing,” meaning humans can read it
  • Uses hierarchical values
  • Can be read by many programming languages
  • Is able to be “fetched” by an XMLHttpRequest

How JSON is different than XML:

  • Doesn’t require an end tag and won’t “break” without one
  • Is shorter to read and quicker to write
  • Uses arrays, which are logical ways to bulk similar data formats in an element
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