JSON stands for JavaScript Object Notation and it is a data-interchange format that is used for storing and exchanging information. It is more lightweight than the traditional XML format and is even used to send data across the internet from a web server. JSON developers are experts in understanding the syntax of this technology, but also in designing and coding up solutions for a wide range of problems for clients. JSON developers have an essential role in developing a variety of applications such as databases, websites and server-side applications.

Here's some projects that our expert JSON Developers made real:

  • Troubleshooting and creating scripts to transfer data through JSON into webpages
  • Developing modules to integrate dynamic solutions with transport APIs
  • Writing scripts using PHP, Java or Python to store, read and update databases
  • Building search result interfaces or flight search results
  • Connecting websites with local servers using JSON solutions
  • Providing solutions to scrape data from various sites
  • Developing product bundling rules using Dynamic Discounts in eCommerce platforms
  • Automating AWS documents involving sending emails with all outputs with SSM Document
  • Creating PowerShell scripts to convert data to CSV from an API

Overall, hiring a skilled JSON developer can enable businesses to harness the power of a wide range of web solutions — from report automation scripts, eCommerce shopping rules to flight search result interfaces — that be customised for any application or platform. With the help of Freelancer Platform, clients can find experienced and reliable professionals that have collaborated with businesses globally. With access to experts in the field, businesses can rest assured that their projects are being handled by specialized professionals that are well versed with this technology. We invite you to post your project on Freelancer Platform so you can find the most suitable professional for your needs.

From 147,377 reviews, clients rate our JSON Developers 4.9 out of 5 stars.
Hire JSON Developers

JSON stands for JavaScript Object Notation and it is a data-interchange format that is used for storing and exchanging information. It is more lightweight than the traditional XML format and is even used to send data across the internet from a web server. JSON developers are experts in understanding the syntax of this technology, but also in designing and coding up solutions for a wide range of problems for clients. JSON developers have an essential role in developing a variety of applications such as databases, websites and server-side applications.

Here's some projects that our expert JSON Developers made real:

  • Troubleshooting and creating scripts to transfer data through JSON into webpages
  • Developing modules to integrate dynamic solutions with transport APIs
  • Writing scripts using PHP, Java or Python to store, read and update databases
  • Building search result interfaces or flight search results
  • Connecting websites with local servers using JSON solutions
  • Providing solutions to scrape data from various sites
  • Developing product bundling rules using Dynamic Discounts in eCommerce platforms
  • Automating AWS documents involving sending emails with all outputs with SSM Document
  • Creating PowerShell scripts to convert data to CSV from an API

Overall, hiring a skilled JSON developer can enable businesses to harness the power of a wide range of web solutions — from report automation scripts, eCommerce shopping rules to flight search result interfaces — that be customised for any application or platform. With the help of Freelancer Platform, clients can find experienced and reliable professionals that have collaborated with businesses globally. With access to experts in the field, businesses can rest assured that their projects are being handled by specialized professionals that are well versed with this technology. We invite you to post your project on Freelancer Platform so you can find the most suitable professional for your needs.

From 147,377 reviews, clients rate our JSON Developers 4.9 out of 5 stars.
Hire JSON Developers

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    19 jobs found

    iOS Developer for Kid-Friendly Safe Search App Features (Swift) Kidos is a child-safe, privacy-first search engine app for iOS, built to provide a clean, distraction-free, and secure browsing experience for kids. The app is live on the App Store and built using Swift. We’re now looking to expand its Pro features to deliver more value to parents and children. App Link: Implement following premium features within the existing iOS app codebase: Parental Control Features ========================== Search activity logs (keywords only – no personal data) Custom whitelist/blacklist (allow/block specific sites or keywords) Daily time limit and scheduled usage lock (e.g., no access after 9 PM) Settings lock via parental PIN Learning & Engagement Features for Kids =====...

    $880 Average bid
    NDA
    $880 Avg Bid
    3 bids

    I'm seeking an experienced developer to build a lightweight, browser-based MVP tool tailored for structured logic building, file upload and analysis, and data labeling. The platform consists of three core modules: - A drag-and-drop editor that exports structured data in JSON, YAML, or CSV formats. - Must include customizable components, pre-built templates, and a live preview feature during editing. - A file analysis tool that checks for issues and generates a report in PDF or JSON format. - A data viewer equipped with a timeline-based labeling UI. This tool will be utilized by technical teams within a niche industry and is not consumer-facing. Therefore, while AI, live control, and real-time execution are not necessary for the MVP, a clean design, high usability, and export ...

    $785 Average bid
    $785 Avg Bid
    162 bids

    Job Title: Python Dev for AI-Powered Trading Signal System (Google Sheets + Telegram Automation) ⸻ Project Description: I’m building a proprietary AI-driven trading signal system and I’m looking for a Python developer to help automate key modules. The system is powered by GPT-style logic and interprets structured AI outputs to generate high-confidence trading alerts. Your job is to create the automation layer that connects: • AI-generated signal outputs (JSON format) • Google Sheets (for dynamic display, tracking, and logic) • Telegram Bot (for daily alerts and simple commands) ⸻ Core Components 1. Google Sheets Sync • Read/write from a structured Google Sheet using gspread or pygsheets • Maintain statuses: OK, Invalid, Pending • ...

    $397 Average bid
    $397 Avg Bid
    32 bids
    Website Performance Audit
    6 days left
    Verified

    I'm looking for a thorough evaluation of my blog/informational website. The focus areas are: - Check if search results are displaying correctly, particularly for date-based searches. - Verify all data binding is accurate. - Assess page load speed and ensure error-free functionality across the site. Ideal skills and experience: - Experience with performance testing tools - Strong understanding of website architecture - Familiarity with error tracking and debugging - Ability to provide a detailed report with actionable recommendations

    $266 Average bid
    $266 Avg Bid
    53 bids

    AI Integration Developer Job Title: AI Integration Developer for LINE → Notion Auto Quotation System Job Description: We are a Hong Kong & Malaysia-based seafood trading group looking to automate our daily quotation process between our Japanese partners and our internal sales team. Project Scope: We receive hundreds of daily product quotations from our Japanese sourcing partner via LINE, including: Product images (e.g. sea urchin, toro, shellfish, fresh fish) Product name (in Japanese or English) Pricing (per box, kg, etc.) Product specifications (size, grade, weight) We want to automate the extraction and conversion of this data into a structured Excel or Notion database, using: LINE Messaging API to fetch messages and media GPT-4 API (or other LLMs) to recognize text, ...

    $458 Average bid
    $458 Avg Bid
    104 bids

    The following API endpoints are required from the Microsoft Business Central backend to support the Encore mobile application’s full functionality. All endpoints must use RESTful architecture, JSON payloads, and HTTPS. To comply with Apple App Store and Google Play Store requirements, certain endpoints (e.g., item search, top items) must be accessible to guest users without authentication to allow limited app exploration before login. This list provides function names and endpoint URLs for all app modules, ensuring seamless integration with the Flutter front-end. Payment-related endpoints are excluded, as payments are not part of the initial release. Guest-Accessible Endpoints To meet App Store and Play Store guidelines, the following endpoints must be accessible without authenticat...

    $351 Average bid
    $351 Avg Bid
    35 bids

    I need a professional developer to build a PC-based interactive quiz game inspired by Family Feud, functional on Windows within 24 hours. Core Features Required: - Display questions and multiple possible answers in card format - Allow user to input answers via multiple choice selection and check against correct ones - Reveal answers on screen when guessed - Auto-score system based on answer ranking - Simple interface (not necessarily high-end graphics) - Basic sound effects (correct/wrong answer, win, etc.) - Questions can be loaded from a JSON file or Excel/CSV Ideal Skills and Experience: - Proficiency in Windows application development - Experience with UI design for interactive games - Knowledge of JSON and Excel/CSV data handling - Ability to implement audio effects and scoring syst...

    $638 Average bid
    $638 Avg Bid
    46 bids

    I'm seeking an experienced WooCommerce developer to create a custom payment gateway plugin, mirroring the functionality and structure of the official WooCommerce Stripe Gateway. Key Requirements: - Integration with MTN Payment API via REST - Core Functionalities: - Automated terminal activation - Invoice creation - Payment processing via phone number & SMS verification - Refunds management - Security: - Digital signature (X-Signature) - Secure handling of keys and customer data - Easy configuration through WooCommerce backend Ideal Skills & Experience: - Proficiency in WooCommerce & WordPress plugin development - Strong knowledge of PHP, REST API integration, and JSON - Prior experience with payment gateway integration

    $158 Average bid
    $158 Avg Bid
    109 bids

    I'm looking for a developer experienced with the Tuya OpenAPI to create a PHP script that automatically adds a 6-digit temporary code to a Tuya smart keyboard lock. Objective: Develop a PHP script that: Authenticates using Tuya API (Access ID and Secret) Generates and sends a 6-digit numeric code to the smart lock Sets an expiration date/time for the code (e.g., valid for 24 hours) Returns the generated code and confirmation of success Technical Details: I already have: Access ID, Access Secret, Project Code, and Device ID The device is a Tuya Smart Lock with Keypad (supports temporary passwords) Language required: PHP Output should be JSON or logged to a file Deliverables: Clean, well-documented PHP code Optional support with testing using my Tuya account Possibility to...

    $19 / hr Average bid
    $19 / hr Avg Bid
    153 bids

    I'm looking for a developer (language and framework are up to you – e.g., Flutter, React Native, Python + Kivy, Kotlin, etc.) to build a mobile application for Android, intended for personal/local use only (no need to publish on Google Play). The app must allow automatic trade execution on Pocket Option, based on signals/alerts from TradingView. - Main Features: Integration with TradingView Alerts: The app should receive alerts from TradingView, ideally using a single webhook URL (e.g., ), Alternatively, other methods can be used (e.g., reading a file, local server, polling a database) – the goal is that alerts trigger automatic trades, Alerts are in JSON format and contain basic trading data. Pocket Option Trade Execution: The app should automatically open trades (...

    $27 Average bid
    $27 Avg Bid
    35 bids

    I'm looking for a skilled ReactJS developer to integrate APIs into our existing frontend. This project involves connecting with backend APIs to enable dynamic functionalities across various components. It's a short-term gig, but there's potential for ongoing work based on your performance. Key Responsibilities: - Integrate RESTful APIs into our ReactJS frontend - Manage asynchronous data (GET/POST) and update UI accordingly Components to Work On: - Login/authentication modules (priority) - Product catalog and filtering - Category-wise navigation - Contact & enquiry forms Requirements: - Implement error handling and loading states - Optimize data flow and performance - Collaborate with our backend team as needed Ideal Skills & Experience: - Proficiency in ReactJS ...

    $90 Average bid
    $90 Avg Bid
    104 bids

    Task: Build a Node.js CLI tool that monitors and stores live DCA transaction data from Jupiter (). exemple in the picture attached Requirements: Data Capture: Monitor the live feed on the page above. Continuously fetch new rows of DCA transactions from the table with columns: Signature | Time | Action | From | Amount (SWAP token a and token b)| Value | Platform | Source the cell amount have to be Storage: Save all captured rows as JSON locally for later querying/export. CLI/Script: A single Node.js script (CLI-friendly) that: Starts the data capture loop with one command. Prints progress logs to the terminal. Uses .env file for any required RPC credentials or environment config. Documentation: Provide a minimal explaining: How to install dependencies. How to run the scrip...

    $184 Average bid
    $184 Avg Bid
    68 bids

    I need a skilled professional to help with converting incoming JSON triggers to SOAP XML using Zoho Catalyst. The JSON data will contain TCI Express details to create an order. The SOAP XML needs to include: - Order ID - Customer details - Product details - Box Dimension (Loop) Ideal skills and experience: - Proficiency in Zoho Catalyst - Strong knowledge of JSON and SOAP XML - Experience with data transformation and integration Please provide relevant experience in your bids.

    $90 Average bid
    $90 Avg Bid
    11 bids

    I'm seeking an experienced Shopify developer to support multiple client projects. Key Requirements: - Strong proficiency in Shopify theme customization and Liquid templating - Experience with front-end technologies, especially HTML - Ability to integrate third-party apps and APIs - Familiarity with performance optimization and cross-browser compatibility - Clear communication and adherence to project timelines Ideal Skills and Experience: - 3–5 years of hands-on Shopify development experience - Experience in building and customizing Shopify apps - Troubleshooting and resolving platform-specific issues independently - Reliable, detail-oriented, and ownership of development tasks - Experience in collaborative team environments with designers and analysts If you have a proven t...

    $6 / hr Average bid
    $6 / hr Avg Bid
    50 bids

    Project Title: WooCommerce Plugin for TopOn API Integration (Digital Voucher Fulfillment) Project Brief: We need a custom WooCommerce plugin developed to integrate with TopOn Global's voucher fulfillment API. The goal is to automatically trigger a TopOn API call when an order is placed and deliver the voucher to the customer upon successful response. The integration must support callback handling for status updates (e.g., SUCCESS, FAILED, REFUNDED) and store voucher codes securely. Core Requirements: Trigger TopOn API topUp call upon WooCommerce order completion Include SKU (denomination/variant) and customer order data in API request Handle asynchronous callback from TopOn with status updates Store returned voucher code (if available) and attach to WooCommerce order Automatica...

    $351 Average bid
    $351 Avg Bid
    87 bids
    JSON URL for Smiirl Integration
    10 hours left
    Verified

    I need a JSON URL to connect my Smiirl to our Google Review link. The link is a Place ID link, and I already have it. The JSON URL should specifically include the review count. Ideal Skills and Experience: - Proficiency in creating and handling JSON - Experience with Google APIs, especially related to Places and Reviews - Familiarity with Smiirl products and integrations Please ensure the solution is reliable and easy to implement.

    $30 - $250
    Sealed
    $30 - $250
    59 bids

    Kindly apply only if you have relevant experience and are available to contribute full-time (9 hours per day) for a 6 month contract. Thank you. We are seeking an experienced Senior Power Automate Developer to lead the design, development, and deployment of business process automation solutions using the Microsoft Power Platform, with a strong focus on Power Automate (Flow). The ideal candidate will have a deep understanding of: ● Microsoft 365 ● Power Apps ● SharePoint Online ● Integration with various enterprise systems Key Responsibilities: ● Lead end-to-end automation initiatives: requirements gathering, development, testing, deployment, and ongoing support ● Design and develop flows using Power Automate (Cloud and Desktop) ● Collaborate with cross-functional teams to integrate solu...

    $3546 Average bid
    $3546 Avg Bid
    26 bids

    Project Title: WhatsApp Business API & RCS Integration with Laravel System Project Description: We are looking for an experienced developer or agency to assist us in registering and integrating WhatsApp Business API and Google RCS messaging into our existing Laravel-based web system. Our platform is already built in Laravel and includes modules for file sharing, campaign sending (SMS, Email), and customer data management. Now we want to expand by adding WhatsApp Business Messaging and RCS messaging capabilities directly from the dashboard. Project Scope: WhatsApp Business API Guide and assist in WhatsApp Business API registration (via Meta/Facebook or BSP if required). Help set up verified business profiles. Generate permanent access tokens and setup webhook for incoming message...

    $140 Average bid
    $140 Avg Bid
    19 bids

    Para un proyecto de orientado a nutrición, necesito desarrollador que utilice GHL (GoHightLevel) y N8N para programas una IA para interactuar por WhatsApp.

    $158 Average bid
    $158 Avg Bid
    12 bids

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