Hire the best JSON developers

Check out JSON developers with the skills you need for your next job.
Clients rate JSON developers
Rating is 4.8 out of 5.
4.8/5
based on 6,007 client reviews
  • $35 hourly
    Numerous years of experience developing web applications using React. Wealth of knowledge coupled with a compelling urge to demonstrate perfection developing a structured codebase as well as the overall application has enabled me to continuously grow and be more efficient as ever.
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    React Native
    Web Application
    Git
    JavaScript
    CSS
    jQuery
    Bootstrap
    HTML
    React
  • $40 hourly
    I have been working with Shopify since my freelancing career started, and I have witnessed the rapid change/upgrade in the Shopify platform. These changes have opened the way to providing solutions in a manner never possible earlier. I can find an optimum solution to your custom Shopify requirement by using all possible ways that Shopify provides: Shopify Functions, Checkout Extensions, Metafields, ShopifyQL, Segmentation, Theme-GitHub Integration, App Proxy, Sections Rendering, Generate shipping rates, and many more. Here are a few of the things that I have done in the Shopify store ✔Shopify Custom Applications ✔Shopify Public Applications ✔Shopify Theme GitHub integration ✔Shopify Theme 2.0 migration ✔Shopify checkout customization (for the plus store) ✔Shopify line_item and shipping scripts (for the plus store) ✔Shopify Theme customization - new sections, blocks, landing page, template ✔Shopify Bug fixes My Techstack - Liquid - HTML - CSS - Javascript - React - Node - Express - MongoDB - Remix - Polaris - REST - GraphQL Version control: GitHub - BitBucket Project Management: Jira - Asana - ClickUp - YouTrack Deploy: Heroku, Google Cloud Run, Fly.io
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    Shopify
    Shopify Plus
    Shopify Development
    MERN Stack
    Liquid
    Shopify Theme
    Shopify Apps
    React
    Node.js
    JavaScript
  • $20 hourly
    I am a highly skilled and experienced Drupal developer with over 10 years of experience. I have a strong background in web and mobile app development, specializing in Drupal CMS, Responsive websites, themes, modules in Drupal ,WordPress, PHP,React, Node JS, HTML, CSS, JavaScript, and responsive design. I have successfully completed numerous projects for clients ranging from small businesses to enterprise-level organizations. My goal is to deliver high-quality, scalable, and user-friendly solutions that meet the unique requirements of each client. Area of Expertise: ✅ Drupal/WordPress Installation & Configuration ✅ Drupal/WordPress theme integration ✅Custom Drupal web application development ✅Migration Drupal7/8 to Drupal9. ✅Drupal site development. ✅Drupal customization. ✅Drupal module development. ✅Drupal theming ✅Drupal E-commerce solution. ✅WordPress plugins development. Our Skills Set: ✅ Core PHP,Node Js, Angular, HTML5,CSS3, jQuery, WEB SERVICES, Responsive website Design ✅ Server configuration , Linux Server configuration , SSH , Putty, Git. Our work is 100% standard and customer satisfaction is guaranteed. We offer Upgrade Website Version , Custom Design and Developing websites, having lots of clients happy with my completed work. * 273+ Projects Completed. * 26,000+ Hours completed.
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    Android App Development
    Web Design
    API
    Drupal
    PHP
    Landing Page
    Angular
    Node.js
    Website Redesign
    CSS
    WordPress
    AJAX
    HTML5
    jQuery
  • $65 hourly
    I bring over five years of expertise as a Retool Developer, having actively contributed to Retool development since 2019. Over this period, I've crafted over 1200+ Retool applications for clients globally. As a seasoned software engineer proficient in Ruby on Rails, I specialize in delivering low-code and no-code development solutions. As an early adopter of Retool, having joined the Retool in its inception year of 2018, I've been immersed in Retool since 2019. My proficiency lies in leveraging Retool components to swiftly and effectively create high-quality retool, consistently meeting retool project deadlines, and staying within budget constraints. Technical Skills: Retool Javascript Python Professional Skill: Retool Agile Development Retool Database Architecture Design Retool UI/UX Design Retool Data Analysis Retool Data Engineering **How to find us** Retool Developer Retool Development Retool Application Developer Retool Expert Developer Retool Mobile Apps **Agency Details** Retool Pro is the agency to provides Retool solutions to startups, growth businesses, and enterprises. Please feel free to start a contract for bigger projects. **Wanna Schedule a Meeting** I love to listen to my client's requirements in detail and understand their business module before starting the job to deliver excellence. Please feel free to talk in person to resolve business problems to intellectual solutions. I am ready to provide solutions. Are you ready to give me problems? Regards, Salman Maqbool Your Trusted Retool Expert
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    ChatGPT
    SQL
    Ruby on Rails
    MongoDB
    PostgreSQL
    API
    Ruby
    Data Visualization
    JavaScript
    Amazon Web Services
    Data Analysis
    NoSQL Database
    Firebase
    Database
  • $50 hourly
    Analytical Accurate Customer oriented Dedicated Team player Time management Enthusiastic Knowledgeable Respectful Serious Trustworthy
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    Project Management
    Agile Project Management
    XML
    ASP
    Visual Basic
    WordPress Plugin
    Laravel
    JavaScript
    CSS
    jQuery
    PHP
    WordPress
    WooCommerce
    HTML
  • $16 hourly
    I'm a professional web developer with more than 5 year of experience. I develop and manage website and web application in custom php, framework like CodeIgniter, Laraval and Wordpress Specialty in voice and sms clouding website specially in Twilio and Plivo, Payment gateways like Stripe,Pa-yPal and braintree . Strong concept of jquery,javascript,CSS,html,ajax and build webiste with powerful client side libraries. Hand on experience in google api's like google map, google calendar, google weather etc. Hand on experience in integrating email api's like Mailgun, Sendgrid, Mailchip etc.
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    Stripe
    Plivo
    CodeIgniter
    Laravel
    Twilio API
    PHP
    Android App Development
    Payment Processing
    HTML
    JavaScript
    WordPress
    jQuery
  • $25 hourly
    Over 20 years experience as a web developer, and 10+ years experience as Wordpress developer makes it almost nothing that I can't do. Parts of my code were used in Wordpress 3.x core. Wordpress API, PSD-to-Wordpress, custom themes, custom plugins, sites from scratch. Ecommerce, payment solutions integration, website speed boost, high load. PHP, MySQL, HTML, CSS, JavaScript, jQuery, AJAX, Wordpress, Woocommerce, Elementor, WPBakery, Gutenberg. Quality counts. If you want to invite me to your project, I will also consider general PHP projects, but Wordpress is preferred.
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    API
    WooCommerce
    Ecommerce Website Development
    Plugin Development
    WordPress Development
    jQuery
    PHP
    Web Development
    WordPress
    AJAX
    CSS 3
    HTML5
    JavaScript
    WordPress Plugin
  • $22 hourly
    ✔ 18+ Years of experience total ✔ 100% Job Success ✔ High-Quality Work ✔ Long-term oriented ✔ Open to contract to hire Back-end skills: 🔹 MySQL/MariaDB, MSSql, PostgreSQL 🔹 PHP, GoLang 🔹 Symfony 🔹 Elasticsearch, Sphinx 🔹 Rabbitmq 🔹 Redis, Memcached 🔹 Comet 🔹 XSLT 🔹 Nodejs 🔹 Git, Mercurial Front-end skills: 🔹 Javascript, TypeScript, HTML 5, CSS 3 🔹 Bootstrap, jQuery 🔹 VueJS 🔹 NuxtJS 🔹 REST API 🔹 React 🔹 Git, Mercurial Additional skills: 🔹 AWS servers 🔹 Firebase (DB, Storage Hosting) 🔹 Linux/Ubuntu/Windows 🔹 NGINX, Apache 🔹 Google Tag Manager / Google Analytics Have knowledges and worked with: 🔹 Java 🔹 Laravel, Yii, Phalcon 🔹 C++ 🔹 Docker 🔹 Joomla, WordPress Worked with this above technologies before in some projects I started my career in 2002. My first commercial product is software for medical clinics (PHP, Java, MySQL). The next major project is software for a pharmaceutical company and a network of pharmacies (PHP, Delphi, MSSQL, PostgreSQL), and at the same time I started working as a freelancer on upwork. I worked (in a team, lead developer, as the only developer) in complex economic projects, in high-load, entertainment. Strictly observe the terms of the project. Attentive to the wishes of the customer. Demanding of himself. I do not like potboilers. I carry out my work in a high-quality, creative and maximum manner. Aimed at long-term cooperation.
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    MySQL
    RESTful API
    Sphinx
    RabbitMQ
    Memcached
    Elasticsearch
    SQL
    Custom PHP
    Redis
    AJAX
    Golang
    GitLab
    XML
    PHP
    JavaScript
  • $20 hourly
    I can build that feature that your users have been asking for for months. I can take your best idea and turn it into an app on the Apple App Store, or It doesn't matter what it is, if it's iOS, I can do it. I have 4+ years of experience developing with Swift. I specialize in building realtime and API data driven iOS apps, building amazing UI/UX (with user focused design and awesome animations), as well as advanced architecture design. App Security is a strength of mine, as I have years of jailbreaking experience. I know how to protect your apps against runtime code injection, Objective-C runtime method swizzling, Man-in-the-middle attacks, as well as jailbreak detection. The Checkra1n jailbreak effects all devices iPhone X and older, and no iOS update can fix this. If jailbreak security wasn't a priority before, it should be now. Unsure if your app is subject to jailbreak exploits? Send me a message, I can find the critical areas of your app that could be compromised and design a solution to prevent it from happening. App security is not something to be taken lightly. I'd love to hear about your project! Send me a message and let's talk about it. Some of the frameworks and APIs I have worked with include: * Foundation. * UIKit for creation of UI using both Storyboards and NIB files, and also programmatically. * Core Location and MapKit to get user current location and display information on maps. * Core Image and Core Graphics for image processing. * Core Data, Plist for persistence store, and UserDefaults. * Experience with networking, consuming RESTful web services, and working with XML and JSON Parsing. * Worked with third-party APIs such as Facebook, Instagram, and Twitter. * Security Framework, storing values in the Keychain. * Localization and Internationalization to different languages and regions. * AVFoundation for playing and streaming video, and capturing photo/video with the camera. * AVDepthData to create 3D images for devices with Dual Camera or TrueDepth Camera, like: iPhone 7 Plus, iPhone 8 Plus, iPhone X. * Metal, for rendering images in 3D with depth. * CoreBluetooth for connecting/reading/sending commands to BLE devices. * Firebase, Xmpp protocol for real database, authentication, storage, and analytics. * Speech for speech recognition. * Managed third-party dependencies with CocoaPods: Alamofire, CocoaMQTT, Crashlytics, Helpshift, JSONWebToken, JustLog, Kingfisher, Mixpanel-swift, PhoneNumberKit, ProtocolBuffers-Swift, QRCode, ReachabilitySwift, SwiftLint, SwiftyJSON, lottie-ios, AudioKit. * integration All Payments Gateway, paypal, creadtitCards and ApplePay * Creat Jitsi Meet SDK and built apps like realtime meeting as zoom App
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    Mobile App Development
    Mobile App Localization
    Apple Xcode
    iOS Development
    API Integration
    Firebase
    Swift
    XMPP
  • $30 hourly
    Hey, I am Jayant, a full stack web developer. I love working in JavaScript. I have over three years of experience working in frameworks like React and Node. I have built landing pages which doubled the conversion rates. Also I specialise in building custom web apps integrating different APIs for the best results. Once you press the INVITE button, here's what we would do. 1. I will take all the details of the project from you and suggest you if I have anything in mind. 2. I will answer all the queries you have regarding the project and make unlimited revisions as per your wish. 3. I will always be available for helping you out with this or any other project.
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    3D Animation
    GSAP
    Mapbox
    HTML5 Canvas
    Animation
    Fabric.js
    D3.js
    API Integration
    Web Application
    React
    Node.js
    JavaScript
    MongoDB
  • $65 hourly
    Hello and welcome to my profile. I'm Markian Tsybran. I am a full-stack developer with a sharp eye in design and outstanding hands-on experience in web development. I specialize in: *UI/UX Design *Web Development *Unit Testing _________________________ My main tech spec: *HTML/5, Haml *CSS/3, Less, Sass, Stylus *JavaScript (ECMA4-6), TypeScript, jQuery *ReactJS + Redux, AngularJS, Backbone *Ruby, NodeJS *Jasmine, Karma, Mocha, Chai, Sinon *VCS, NPM, Gulp, Grunt, Webpack/2 *Adobe Photoshop, Adobe Illustrator, Adobe XD, Figma, Sketch, Zeplin _________________________ I am passionate about creating a high quality, fully cross-browser and responsible websites. Using only semantic HTML for better SEO as well as all the best practices and techniques for the shortest page load time. I pay attention to every detail on the page and want to make it perfect! Here is what my clients say about that: *It was a pleasure to work with this freelancer. He follows instructions carefully and I'm pleased and amazed by the attention-to-detail he displays when he's designing. I recommend him and I will be hiring him again.* - Funky Buddah _________________________ WHY YOU WOULD LIKE TO WORK WITH ME: 1) strong background and large experience A large number of projects, both caught up in progress and from scratch, successfully finished in a deadline-oriented period. Over 5 years’ in web-development. Managing all facets of site development, from initial design and architecture to site deployment and client management. Able to effectively communicate with a wide range of clients and coworkers. My skill set covers a huge list of libraries and frameworks I can easily and productively work with. 2) I want my clients to be satisfied Sometimes it happens that client can see some gaps or small changes he would like to change in the final result. I consider it as part of my work to make these things good for you! Even long after the contract is closed - could you have any notes/questions regarding the scope of the task I did for you, feel free to ping me! 3) fluent English The proper understanding of client needs - is the main key to build a successful co-working experience. Language won't bring any problems for us. 4) listen - analyze - suggest - fulfill I want to share the same details with the client, both from his and my points of view. You explain what you want, then I tell what improvements I can see in your project. The decision is always up to you, I want you to have my warning, though, if there is any, *Markian is a deeply skilled and knowledgeable individual who considers the requirements carefully before proposing the solution. He has been able to manage changing requirements very skillfully and with minimal interruption. Working with him was like working with a teammate.* - Naman Kumar _________________________ Want to have your website fast loading, fully responsible and high quality..? Developed using only the best practices? Give me a shout! Let's create a wonderful web-project together! Regards, Markian T.
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    Web Development
    WordPress
    HTML
    SCSS
    Angular 2
    Web Design
    TypeScript
    AngularJS
    HTML5
    CSS 3
    JavaScript
    LeSS Framework
    jQuery
    React
  • $40 hourly
    I have 10+ years of experience in web-based software development. I have a first-class degree in Master of Computer Applications from MDU Rohtak. My areas of expertise include developing web applications using PHP as a primary server-side scripting language. I also have a good grasp of client-side web programming using JavaScript. I am very good at utilizing API and web services to integrate them into existing/new applications. I have hands-on solid Object-Oriented programming. My favorite Framework is Laravel/CodeIgnitor, and CMS is WordPress, and I can accomplish all sorts of customization regarding these two. Apart from it, I do have expertise in front-end JS Frameworks like ReactJs and Angular. I can manage server-level administration like setup Apache, PHP, MySQL, and other required dependencies using SSH on VPS. I prefer Ubuntu but can take care of different Unix systems too. I have helped many organisations to to automate their work, and build tools and utility to help their businesses. Having a sound understanding of ins and outs of the technical flow I can guarantee the success of a prospective client.
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    Android App Development
    XMPP
    Database Architecture
    Web Development
    WordPress
    API Integration
    MySQL
    WordPress Plugin
    React
    PHP
    Laravel
    JavaScript
    Custom PHP
  • $75 hourly
    🏆 Top-Rated Plus Bubble-Certified Developer and Bubble.io Silver Partner Agency 🌟 7+ Years of Proven Experience Working with Bubble 🌟 50+ Apps Built on Bubble.io 🌟 11,500+ Hours as a Full-Time Bubble Developer 🚀 Launch your Bubble MVP in just 4-8 weeks 📈 Supercharge Growth with a Customer-Centric UI/UX Bubble Design 📉 Slash Costs by 20-40% with Optimized Bubble Workflows 🔐 Safeguard your Business and Customer Data with Bubble Privacy Rules 🦄 Attract Pre-Seed and Seed Funding with Confidence for your Bubble App If you or your company have a app or website idea or issue, I'm here to support you through the entire process from conception until the maintenance of your app. Exactly, it doesn't mind the size of your project, and I'm here to help you using all of my experience and knowledge in platforms like Bubble.io. For me, the most crucial thing will be the trust relationship we will establish during the job. You can count on a person compromised with delivery time, focused on problem-solving, and making user-friendly interfaces (UI / UX) and working well. I've been working with IT for 25+ years, own Bachelor's Degree in Business Management and MBA in IT Management. I also know Agile Methods as DevOps and Scrum. During this period, I founded my own company in 2007, with a core business in IT technical support. I've developed apps and websites using MySQL and PHP in the backend and CSS, HTML, and JavaScript in the frontend. I have hands-on experience in configuring, developing, migrating, and optimizing apps/websites, as well as working with several plugins and widgets in Bubble.io. I hope we can talk about your next need, whether for a job opportunity, or share a little of my experiences and ideas about how to help you out. Anyway, please get to know you can count on me.
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    API Integration
    Zapier
    No-Code Landing Page
    UI/UX Prototyping
    Bubble.io
    App Development
    No-Code Development
    Ecommerce Website Development
    No-Code Website
    Responsys Development
    GPT-3
    Web Development
    CSS
    HTML
    JavaScript
  • $34 hourly
    I LOVE what I do — and what I do is SHOPIFY! I am Specialized in Shopify and eCommerce industry for more than 9 years. I am passionate and experienced Shopify Developer. I know the challenges, it's solutions and how to make you stand out of crowd and competition. I turn your ideas into Brand E-commerce store offering infinite Solutions to your business needs, overall improving Conversion Rate and make you ahead from your competitors. with proven custom functionality, 3rd party app integrations, store designs, and everything in between. I'm up to date on all modern web design trends and standards and can build you a site you are proud of. I'm a certified Shopify Expert and can take your shop to the next level. Let's discuss your project goals. My Skills : ✓ Shopify Store Development from scratch ✓ Provide a modern, unique, responsive and conversion-optimized UI/UX ✓ Set up Shopify Store from PSD/ Figma/ Sketch. ✓ App integration meeting your needs. ✓ Automating the process to convert visitors into Sales. ✓ Shopify Theme Development from scratch for custom designs. Customizing any template/section / page or fixing bugs ✓ Creating 3D product customizer. ✓ Creating Bundle Builder ✓ Creating Custom Discounts based on several conditions ✓ Creating Custom Reporting for B2B. ✓ Link your domain with the Shopify store. ✓ Migrate the Store from any e-commerce platform to Shopify ✓ Make any changes to your existing Shopify store as you want. ✓ Offering dynamic updates so you change the website content / Color Scheme / Images, everything as per Sale Strategy or Campaign. ✓ Optimizing Website loading speed with Guaranteed Google Page speed insights Score to 95+ and A grade for GTMetrix ✓ Making Mobile/tablet responsive website ✓ Making Cross Browser Optimized Website ✓ Designing a Beautiful Mega menu ( easy Sitemap Navigation ) without any app ✓ Creating Filters, Smart Search, and Sorting feature ✓ Integrating Buy Now Pay Later payment methods like Klarna, Afterpay, Affirm ✓ Creating Metafields for Dynamic Fields ✓ Offering Infinite Variants ✓ Creating Inventory Sync and auto management ✓ Creating DropShipping Store and integrating Ali-express and Oberlo ✓ Creating a Dynamic Newsletter and integrating Klaviyo for email automation ✓ Offering Pre Order and Post Order Upsell & Cross-sell ✓ One Page Checkout ✓ Boosting Conversion Rate ✓ Lazy Load and Automatic image compression ✓ Image cropping to represent all products in similar pattern ✓ Breadcrumbs for easy navigation ✓ Cart Drawer / Mini Cart setup with Free Shipping eligibility conditions and Upsell ✓ Upgrading to 2.0 Shopify API: ✓ Shopify Private App and Public App. ✓ Custom Shopify API for Products, Order, Customers, Discounts, Collections, Custom Fields, Custom Reporting, Inventory ✓ Shopify app error handling. ✓ App Installation and setup. Now, let's discuss your dream project
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    Custom Ecommerce Store
    Custom Ecommerce Platform Development
    API Development
    Ecommerce Website Development
    PSD to HTML
    Ecommerce Website
    Shopify Templates
    Shopify Plus
    Shopify Apps
    Shopify Theme
    Figma
    WordPress
    Shopify
  • $100 hourly
    My websites helped my clients generate $2M+ in revenue and generate thousands of new leads every day. My clients are using their website as a revenue-generating tool and here is what they are saying: 🌟 "Adrian did a job well done. quick, efficient & great communication!" 🌟 "He stepped up and helped us with both our creative and our functionality when we did not have proper direction." 🌟 "Adrian’s knowledge of Wordpress and ability to create custom solutions is incredible." My Clients can get 2X more leads with the same traffic and at least 2X in revenue 👇You might be a good fit if 👇 ➙ You want a high-converting website ➙ You want a great-looking website with an excellent user experience ➙ You want to build a membership website ➙ You want to build an e-commerce website ➙ You want a custom-developed complex website or platform ➙ You want to integrate multiple APIs for Content Delivery or Tracking. ➙ You want a custom Wordpress Plugin By Working with me You will: ✔Stop the endless search for a great developer that understands marketing goals ✔Have A Website/Platform that is designed and built with ROI in mind ✔Get your project done fast and efficiently ✔ Get a developer that will lead the way and go the extra mile. ✔ Ongoing support Here is what some of my clients say about me: ⭐WOWWWW!!!! I love it!!! Thank you Adrian. Great job!!!! - Marketing director at a 7 figure agency ⭐"He did a good job seeing how our vision need to be coded and transferred to a new platform" - Marketing director of a government institution ⭐ "GREAT HIRE! Adrian has been a total angel! He came on board to a job that he didn't even start and was able to work, complete, and launch the project." - Founder at a 7 figure SMMA Not everyone can be my client. We might not be a good fit if: ❌ You are looking for a cheap developer ❌ You have a tight budget ❌ You are not open to any suggestions ❌ You are looking for a quick fix. Who am I: ➥I generated 2M+ in sales for my clients ➥I developed a multi-million dollar platform for a Fortune 100 company ➥Over 10 years of Wordpress Development experience ➥Over 100 projects delivered. What I am looking for in a new client: ● Integrity ● Open mind ● Great service & offer ● Focused on results and not on flashy things ● Knows the real cost of good development Sounds like you? Here are the next steps: 🟢 Click the green ‘Invite to Job’ button in the top right-hand corner My Experience: Wordpress Development | Wordpress Plugin Development | Wordpress Learning Platform | Wordpress Membership Platform | WooCommerce .
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    Website
    WordPress Theme
    API
    CSS
    React
    API Integration
    WordPress
    HTML
    jQuery
    WordPress Plugin
    Web Development
    JavaScript
    PHP
  • $60 hourly
    ✅ Top rated developer with 100% job satisfaction on Upwork ✅ 5 years working as a freelancer on Upwork ✅ Senior full stack engineer at multiple startups What they say (from my LinkedIn profile): --- "David impressed me from the beginning, from the initial interview call to his last day on my team, he outperformed in every possible way. A couple of skills that make him unique: - He has the perfect mix of understanding a business need and using the right technology to solve it. - His quality standards are high, yet he appreciates delivering over perfection. - Put people around him, he'll be friendly and help them grow. Without hesitation, I'd work with David again, and I'm convinced he'll excel in whatever position he works in the future." --- Excellence doesn't quite cut it when describing David as an Engineer. His skill, dedication, and talent are something you don't really see quite often. I was honored to see his growth from the moment he joined the company as a support engineer, to now being the most talented and prominent backend developer of the entire company. There is not one aspect of product development he does not excel at. He: - Knows and is very proficient at architecturing systems and databases. - Displays remarkable skill at both FrontEnd and BackEnd development. - Understands and can comfortably handle product and business-level interactions with clients and stakeholders alike. All this is alongside an innate skill at troubleshooting, extreme adaptability even in a fast-changing environment, and being an overall delight to work with. Engineers and people like David don't come along too often, and I will honestly envy any business with the luck and honor to have him. --- My work experience can be divided into 2 categories: * Full Stack Engineer * I have worked as a Senior Full Stack engineer in 2 SaaS startups where I have been responsible for system design, DevOps CI/CD management, designing scalable and robust applications and writing clear and efficient code. 🟢 Backend: Python (Flask, FastAPI), Node.js (Express), GraphQL (Strawberry, Apollo, Postgraphile) 🟢 Frontend: React, NextJS, TypeScript, Redux, Zustand 🟢 Databases: PostgreSQL, DynamoDB, Firebase 🟢 Cloud & DevOps: AWS, GCP, Heroku, GitHub Actions, Terraform, Kubernetes *Automation Consultant* On Upwork, I have worked with a variety of small businesses as the go-to automation consultant. I have many long-term relationships where I act as the on-call consultant for designing, implementing, and maintaining automation solutions for streamlining processes and workflows. Some of the tools that I have used for this: 🟢 Google Apps Script 🟢 Firebase (functions, real time database, firestore) 🟢 Google App Engine (python, typescript, golang apps) 🟢 No code tools - (Zapier, Make, Pipedream etc) I am familiar with the APIs of many popular SaaS tools such as Jira, Asana, Clickup, Monday.com, Shopify, Wix, Trello, to name a few. I am also very familiar with the most popular AI APIs such as OpenAI, Claude, Ollama. If you want to integrate a tool or automate a workflow, there's a good chance I've worked with it before. Why Work With Me? Proven Track Record: 5+ years of successful projects on Upwork with 100% client satisfaction. Full Stack Expertise: From database design to user interface, I can handle every aspect of your project. Scalable Solutions: Experience in designing and implementing applications that can grow with your business. Automation Specialist: Streamline your workflows and integrate your favorite tools for maximum efficiency. Clear Communication: Fluent in English and Spanish, with a background in education ensuring clear explanations of technical concepts. Whether you need a robust full-stack application or a custom automation solution, I have the skills and experience to bring your project to life. Let's discuss how I can help you achieve your technical goals!
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    Tailwind CSS
    SQLAlchemy
    Google APIs
    React
    Node.js
    RESTful API
    PostgreSQL
    API Integration
    Google Apps Script
    TypeScript
    Docker
    Next.js
    GraphQL
    JavaScript
  • $35 hourly
    I am an experienced full-stack web developer with deep understanding of how the web is organized and with 8+ years professional experience working for start-ups and clients. I believe my strong points are my Responsibility and Punctuality. When working on a new project, I like to listen the client, so that I can have a clear understanding of his/her needs and vision of the project and my goal is to deliver quality solution to every client.
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    Web Development
    GitHub
    MySQL Programming
    Magento 2
    MySQL
    WooCommerce
    PHP
    HTML5
    JavaScript
    jQuery
    CSS 3
  • $33 hourly
    Skilled Mobile Engineer with more than 6 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
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    Google Maps API
    Object-Oriented Programming
    XML
    Core Java
    SQLite Programming
    Material Design
    Android SDK
    Mobile App Development
    iOS Development
    Firebase
    Android App Development
    Dart
    Flutter
    Android
  • $20 hourly
    What Should You Know About Me and What Sort of Work I have done? I am a Front-End Engineer. I have more than 5 years of experience. I have worked on different web applications including Products and high-Quality Projects. I have created CRM systems, Point Of Sale (POS) systems, Invoice Management Systems, Payment solution systems, and many others. . What Sort of Technologies I am Working On? I worked almost on all versions of angular and build large-scale applications, from being a team player to a team leader. I fulfilled all these responsibilities in these years with 100% percent dedication. Experience in: - Angular 2+ / Angular CLI / Angular Material - NestJS - React - Flutter - HTML5, CSS3, Bootstrap, Tailwind - Javascript, Typescript - RxJS - NGRX - NodeJS - Firebase - ExpressJS - MongoDB - GitHub / GitLab / BitBucket - NGINX / Apache server - Jira What I will Provide you? Benefits you'll have Fully Documented source code. Project Delivery within the deadline. Deployment on cheap servers (Heroku, Gh pages). Version Controlling (GIT) If you have any questions I am inviting you to contact me and feel free to ask.
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    Mobile App Development
    Web Design
    NestJS
    SCSS
    AngularJS
    HTML5
    JavaScript
    MySQL
    Angular
    Git
    Node.js
    TypeScript
    CSS 3
    ExpressJS
    Web Application
  • $30 hourly
    I'm a full-stack developer with expertise in Angular, React, Next.js, and Express.js. I also have strong skills in GIS and databases. Skills: *Fullstack: Angular, React, Next.js, Express.js, Nest.js. *JavaScript: Node.js, ES6+, TypeScript *Databases: MongoDB, MySQL, PostgreSQL *GIS: OpenLayers, Leaflet Experience: *Angular: 6 years creating scalable web applications. *React & Next.js: 3 years building dynamic frontend solutions. *Express.js: 4 years developing RESTful and Graphql APIs and web services. *GIS: Proficient in map creation with OpenLayers and Leaflet. *Databases: Expertise in MongoDB, MySQL, and PostgreSQL.
    vsuc_fltilesrefresh_TrophyIcon JSON
    NestJS
    Material Design
    Next.js
    Angular
    JavaScript
    ExpressJS
    Node.js
    React
    OpenLayers
    API Integration
    RESTful API
    PostgreSQL
    GraphQL
    MongoDB
    TypeScript
  • $35 hourly
    **I will embody your reality with professional applications👩🏻‍💻👩🏻‍💻** I'm iOS developer who specializes in building  iOS Apps, working on a variety of projects experience in creating unique and modern Mobile applications for iOS. I have excellent troubleshooting and debugging skills developed & high attention to detail, I can provide software development, testing/debugging. 📍.. Skilled in:
 ◉ Clean Code Architecture. [MVC,MVVM,MVP] ◉ source control [Git/ GitHub/ GitLab] ◉ Swift Programming Language ◉ Auto layout(StoryBoard).
 ◉ UIKit, StoreKit, AVFoundation, CoreGraphics, CoreImage, CoreAnimation, CoreLocation ◉ CoreData, Realm Database,Firebase
, Keychain. ◉ AlamoFire, Moya. ◉ Notifications ( APNs, FCM) ◉ ResetFull API (JSON, XML) ◉ Animation ◉ Maps ◉ Media player ◉Trello,Jira,Nifty, Slack, MS Teams ◉ Adobe XD, Figma and Photoshop Designing tools I always aim to maintain a long-term relationship with my clients. Whether you’ve lost your original developer, need additional resources, or want a brand new app, I can step in and Build your business with speed, accuracy, transparency, and a high quality Regards!

Never hesitate to contact me, I will start working now.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Testing
    Native App Development
    iOS SDK
    Swift
    Realm Database
    Firebase
    iOS
    Push Notifications
    Map Integration
    iOS Development
    Apple Xcode
    API
  • $40 hourly
    I am Front-end developer with 15+ years of experience and I only prefer to work with long term client relationships. I specialized in HTML5/CSS3, jQuery, Angular, javascript, twitter bootstrap, wordpress, PSD to Responsive html with W3C Valid, Semantic, Cross-Browser capable and SEO friendly code 100% hand-coded HTML/CSS My development and testing environment includes a Windows Desktop PC, iMac, iPad, iphone, Android Mobile, Windows Phone. I look forward to working with you.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Twitter/X Bootstrap
    Web Design
    Webflow
    WordPress Development
    PSD to HTML
    Front-End Development
    HTML
    CSS
    WordPress
    jQuery
    HTML5
    CSS 3
    JavaScript
  • $55 hourly
    I like to take on new tasks to expand my diversity in the field. Mostly familiar with .NET and PHP on the back end and front end coding, JavaScript and JQuery, and design as well.
    vsuc_fltilesrefresh_TrophyIcon JSON
    API
    Microsoft IIS
    Microsoft SQL Server
    MySQL
    C#
    WordPress
    Web Design
    jQuery
    HTML5
    JavaScript
    CSS
    Web Development
    PHP
    ASP.NET
  • $40 hourly
    Generally worked on Line of Business applications on both desktop and web. Clients include Shell, IBM, many national banks and government branches.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Windows App Development
    Microsoft Windows
    Microsoft SQL Server
    CSS
    ASP
    JavaScript
    ASP.NET MVC
    HTML
    Windows Communication Foundation
    .NET Framework
    C#
  • $40 hourly
    Hey! I'm Haseeb, a highly skilled Shopify developer with 4+ years of experience in e-commerce development. My passion for delivering top-notch solutions, combined with my exceptional communication skills, has made me an asset to my clients. ⚡ 4+ Years Of Experience In Online Store Development I have extensive experience in developing, customizing and maintaining Shopify stores that meet the unique needs of each business. My expertise includes creating custom themes, integrating third-party apps, and implementing advanced functionality such as sales reporting and inventory management. I'm well-versed in HTML, CSS, JavaScript, jQuery, Ajax, JSON and Liquid, and I always stay up-to-date with the latest industry developments to ensure that my clients receive the best possible solutions. I'm committed to providing excellent customer service and ensuring that each project is completed on-time, within budget, and to the highest standard. If you're looking for a reliable and experienced Shopify developer, look no further. Let's discuss your project and how I can help bring your vision to life. I look forward to the opportunity to work with you! Let's build your dream online store!
    vsuc_fltilesrefresh_TrophyIcon JSON
    Quiz
    Squarespace
    Kajabi
    Shopify Apps
    Shopify SEO
    Shopify Theme
    Liquid
    Shopify Plus
    BigCommerce
    Shopify
    HTML5
    jQuery
    JavaScript
    AJAX
  • $40 hourly
    Hi there! Looking for a developer who can bring your ideas to life on Wordpress? You found me! I provide a full development cycle for popular CMS, as well as work with well-known frameworks for LAMP stack. I'm well versed in backend and front-end technologies and ready to create a website for you from beginning till end or improve its functionality / performance / speed. In my practice I often work with different 3rd party API's, built the forms with different behaviors, create from scratch and adjust plugins and themes. I ready for short projects as well as long term partnership. I'm best in provide services like: - Developing sites and parts of them like themes, plugins, components, modules from scratch. - Upgrading CMS versions, plugins, components, modules. - Integrate different 3rd party API with your code. - From PSD to HTML layout preparing. - Making responsive site layout (mobile friendly, adaptive). - Setting Google analytics, tag manager, custom events and goals tracking. - SEO audit and subsequent correction of identified technical errors. - Page speed optimization. - Malware and viruses removing from sites and servers. - Web data scraping and manipulating. - Migration to another server/hosting/domain. - Restoring site from backup. - Cloning existing site. - Urgently fixing small bugs and issues.
    vsuc_fltilesrefresh_TrophyIcon JSON
    Joomla
    SEO Audit
    React
    XML
    PSD to HTML
    RESTful API
    JavaScript
    CSS 3
    HTML5
    AJAX
    jQuery
    MySQL
    WordPress
    PHP
  • $32 hourly
    🏆 Netsuite SuiteCloud Developer II certification and Celigo Level 4 certification 🏆 8+ years of experience in Netsuite domain and 4+ years of experience in Celigo 🎁Experience of working with Netsuite customer's across different industries like Retail, Apparel, Footwear and Accessories,Health and Beauty,Manufacturing 🏆 In depth knowledge of Netsuite functional processes 🎁Free 30 days support for all completed tasks and projects. If you are looking for someone to Implement, customize or integrate Netsuite, then I might be the right person for you. I have 8+ years of experience in Netsuite domain. I have worked on all kinds of Implementation, Customization, Support and Integration Projects. I have experience of working with 100's of different customer's across different industries. I am not only good at providing technical solution but I also have good understanding of different business processes. This has helped me to do customization within Netsuite and also to integrate Netsuite with other popular system's like Shopify, Bigcommerce, Amazon, Paypal, Salesforce etc I have good understanding of the following tools and modules Netsuite Suitescripts : Client, User Event, Suitelet, Schedule, Restlet, Map Reduce, Mass Update and Portlet Implementing Celigo App's and Custom Flow's Netsuite Integration with other systems like Shopify, Salesforce, Paypal etc Reports, Saved Searches, Dashboards, Roles, Permissions, Centers, Center Tabs, Users, Business Intelligence. Custom Records, Fields, Custom Lists. Advance PDF Form Customization Data Migration, CSV imports/Export. Order To Cash Procure To Pay Inventory Management Sample Project Experience: Netsuite Shopify Integration This project involved syncing item, inventory, orders, customers, billing, refunds between NetSuite and Shopify. It had to built in such a way that it could accommodate around 20k orders per day. Netsuite Bigcommerce Integration Sync customer, orders, products between Bigcommerce and Netsuite Netsuite Paypal Integration Import payment details from paypal and create JE/Bank deposit in NS Development of electronic payment file and encrypting it for setting up EFT Payments for vendor. Setting up the EFT bundle and creating custom payment file using markup language. When payment is processed and file is generated, use the user event script to encrypt the text in the file. Integration with Sales Force using Restlet Sales force sends information to NetSuite restlet every time a new invoice is recorded. Restlet was created to read the input and create invoices based on that return back the invoice id. Printing GL Impact of a transaction. Development of customer statement page using Suitelet. Development of Vendor Approval Flow. Schedule script to create 1 lakh custom records Design Solution to track transactional change Information Single employee licensee is used by many employees to make changes in transaction. Use suitescript to record the exact name of user who made the change. This is done by assigning a secret key to everyone using that employee license. During edit, using suitescript user is asked to enter secret key and if it matches one of the correct values, retrieve the name of actual user and set in a custom record which is displayed as a subrecord in transaction record. Integration with DocuSign Use DocuSign bundle to integrate it with sales order and using suitescript allow the sales order pdf to be automatically retrieved when user clicks on send with DocuSign button. Integration with Other Systems: Loop, Radial, Ryder, Stripe, Salesforce, Concur, Return Logic, Returnly, Marketo etc
    vsuc_fltilesrefresh_TrophyIcon JSON
    Shopify
    ERP Software
    NetSuite Administration
    Salesforce
    RESTful API
    JavaScript
    Amazon Seller Central
    API Integration
    API
    SOAP
    Microsoft Dynamics CRM
    Software Integration
    NetSuite Development
    SuiteScript
    Oracle NetSuite
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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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