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.

จาก 131,923 รีวิว ลูกค้าให้คะแนน JSON Developers 4.9 จาก 5 ดาว
จ้าง 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.

จาก 131,923 รีวิว ลูกค้าให้คะแนน JSON Developers 4.9 จาก 5 ดาว
จ้าง JSON Developers

ตัวกรอง

การค้นหาล่าสุดของฉัน
คัดกรองโดย:
งบประมาณ
ถึง
ถึง
ถึง
ประเภท
ทักษะ
ภาษา
    สถานะงาน
    16 งานที่พบ

    I want a small, self-contained PHP application that lets me enter a YouTube channel name (or URL) and immediately pulls back the key public statistics from that channel.

    $13 Average bid
    $13 การประมูลเฉลี่ย
    27 คำเสนอราคา

    I need a hardened PowerShell script that an IT service-desk analyst can run to remove all applicable group memberships from a specified Microsoft Entra ID (Azure AD) user as part of the employee leaver/offboarding process. The current proof-of-concept works, but it needs additional robustness, security controls, error handling and operational documentation to make it suitable for regular service-desk use. What needs to be built * A single .ps1 PowerShell script that connects to Microsoft Entra ID using the Microsoft Graph PowerShell SDK. * Validate that the target user account exists before making any changes. * Enumerate the user’s current group memberships. * Safely remove the applicable group memberships. * Include appropriate safeguards to prevent accidental processing of the ...

    $194 Average bid
    $194 การประมูลเฉลี่ย
    92 คำเสนอราคา
    Animación de Personaje 2D en Spine 4.2
    5 วัน left
    ยืนยันแล้ว

    Animador 2D en Spine 4.2 para personaje de videojuego Busco una persona con experiencia en animación 2D y Spine 4.2 para preparar y animar un personaje destinado a un videojuego tipo slot. El personaje ya está diseñado y proporcionaré una imagen PNG de alta resolución. No cuento con PSD ni archivo editable, por lo que la persona contratada deberá realizar directamente desde el PNG la separación de las piezas necesarias, reconstruir únicamente las zonas ocultas necesarias para el movimiento, crear el rig y realizar las animaciones. Trabajo requerido - Separación de las piezas del personaje necesarias para el rig. - Reconstrucción puntual de zonas ocultas cuando sea necesario. - Creación del rig en Spine 4.2. - ...

    $5 / hr Average bid
    $5 / hr การประมูลเฉลี่ย
    11 คำเสนอราคา
    Android Text Chat & Activity Feed
    4 วัน left
    ยืนยันแล้ว

    I’m enhancing an existing Android application and need two key upgrades: 1. Real-time text chat • In-app conversation screen with message history, read/typing indicators and offline persistence. • Scalable backend or third-party SDK of your choice (Firebase, , or similar) fully integrated, with clean, well-documented code so I can maintain it later. 2. Activity feed • A dedicated screen that pulls and displays a chronological feed of user activities (likes, follows, posts, etc.). • Smooth, paginated scrolling and a simple JSON endpoint or local database schema to keep the feed in sync. Acceptance criteria • Messages appear instantly on both devices and remain after app restart. • Feed loads in under two seconds on a typical 4...

    $118 Average bid
    $118 การประมูลเฉลี่ย
    69 คำเสนอราคา

    I need a clean, well-documented PHP script that takes raw financial data as input, runs the necessary analysis, and returns structured results I can feed straight into my reporting stack. Scope of work • Ingest financial datasets (CSV, JSON, or an array passed in memory). • Perform the core data-analysis routines I specify—totals, averages, growth calculations, and any other metrics we agree on. • Output should be available both as an associative array and, on demand, as a downloadable CSV so I can drop it into Excel or Power BI without extra steps. • Code must stay framework-agnostic (pure PHP 8.x) and avoid heavy external dependencies; if you rely on a helper library, clear it with me first. • Efficiency matters: typical files sit around 50 MB, s...

    $241 Average bid
    $241 การประมูลเฉลี่ย
    61 คำเสนอราคา

    I have a batch of scanned bank statements that must be run through OCR and parsed so I receive clean, structured JSON containing only the account-holder information (name, address, account number and any other clearly labeled personal identifiers that appear on the statements). Accuracy and consistency are critical. I will verify the JSON against the original PDFs, so the output must match every field exactly as it appears, without spelling mistakes or truncation. Feel free to employ any combination of Tesseract, ABBYY FineReader, AWS Textract, or another OCR engine that can handle mixed fonts and occasional background noise—use whatever delivers the best character recognition rate. Deliverables • A single JSON file per statement, named to match the original document &bull...

    $422 Average bid
    $422 การประมูลเฉลี่ย
    73 คำเสนอราคา

    I’m assembling a small, highly-skilled team of mathematics domain experts to help me refine a large-language model. Your main responsibility will be data annotation: taking raw mathematical questions, proofs, theorems, solution outlines, and related explanatory text and tagging them with the precise metadata the model needs (topic, sub-topic, difficulty level, prerequisite concepts, step-by-step reasoning, common misconceptions, etc.). Because this work directly feeds the model’s training loop and later evaluation, accuracy matters more than speed. You should feel comfortable distinguishing between, say, elementary number theory and analytic number theory, or spotting a subtle gap in a proof that could mislead the model. Familiarity with JSON-based annotation formats, Python...

    $18 / hr Average bid
    $18 / hr การประมูลเฉลี่ย
    43 คำเสนอราคา

    I need a clean, well-documented Python script that can pick up CSV files from a watched folder, process them according to my business rules, and then push the results to a designated output location. The workflow breaks down into three core parts. 1. File I/O handling • Automatically read incoming CSV files. • After processing, write the transformed data to a separate folder. • Rename each source file to a timestamped archive name and move it to an “_archive” sub-directory so nothing is re-processed by mistake. 2. Data processing & algorithmic checks The CSVs include a fixed header row followed by transactional records. For every row the script must: • Run field-level validation (type, range, mandatory columns). • A...

    $6 / hr Average bid
    $6 / hr การประมูลเฉลี่ย
    51 คำเสนอราคา
    Gladia Web Voice Order Module
    2 วัน left
    ยืนยันแล้ว

    I need a JavaScript module that lets customers dictate complex hardware orders directly inside my web store. Using the Gladia speech-to-text API, the module must: • stream microphone input, display a simple push-to-talk UI, and show live transcription • recognise technical terms such as lengths, diameters, part numbers, and quantities, then convert each spoken line into clean JSON that my cart can consume (e.g., { "sku": "AB-45-ST", "qty": 12, "length": "1.25m" }) • expose hooks so I can pass the JSON straight to existing checkout code • allow easy extension of the custom vocabulary so future parts or units can be added without code rewrites Deliverables 1. Well-commented source code for the Gladia integrati...

    $72 Average bid
    $72 การประมูลเฉลี่ย
    163 คำเสนอราคา
    Alignerr RL Task Implementation -- 2
    2 วัน left
    ยืนยันแล้ว

    **Project Title:** Create an Alignerr RL Task from Template Repository I'm looking for an experienced Python/AI developer who has worked with Docker, GitHub, and machine learning environments. ### Project Requirements * Set up the provided Alignerr RL task template repository. * Create a new task under the `problems/` directory using the appropriate starter template. * Configure task metadata and Docker environment. * Implement `` for deterministic scoring/rubric. * Create the required solution and task files. * Validate the task using the provided harness. * Generate the required `` and other validation artifacts. * Ensure the project passes all local validation checks and is ready for GitHub PR submission. ### Skills Required * Python * Docker * Git/GitHub * Machine Learning / ...

    $245 Average bid
    $245 การประมูลเฉลี่ย
    52 คำเสนอราคา

    I’m extending an existing Spring Boot web application and need a solid Java backend developer to craft a brand-new REST feature. The focus is the API layer: creating endpoints that let clients both fetch and submit data. All logic must respect clean Core-Java OOP principles, integrate smoothly with a MySQL database, and expose predictable JSON responses over HTTP. Here’s what the work involves: • Design and implement the new endpoints in Spring Boot, wiring them through controller, service, and repository layers. • Map the required tables or queries in MyBatis/JPA (whichever you prefer) so data retrieval and insertion remain performant and secure. • Write unit and integration tests, mocking dependencies where appropriate, and run end-to-end tests with Postm...

    $15 / hr Average bid
    $15 / hr การประมูลเฉลี่ย
    167 คำเสนอราคา
    Advanced PWA Web based QR-vCard Platform
    1 วัน left
    ยืนยันแล้ว

    I’m building a production-grade Progressive Web App that runs smoothly as a PWA/Web app on both iOS and Android. Its primary job is to display and / or scan QR codes. Where it scans QR code, it pulls from a link to our secure web link a vCard from my backend and present that contact card so the user can add it to their phone in one tap. The platform can be updated from the front-end IOS/Android and control what fields in the vCard that handle multiple phone numbers, emails, physical addresses, social channels, company fields and free-text comments—essentially every field the spec allows—and it has to do so dynamically because the data can vary from one QR to the next. Scanning itself isn’t just “point and read.” I need robust error correction plus e...

    $338 Average bid
    $338 การประมูลเฉลี่ย
    337 คำเสนอราคา

    I need a Python 3 script that uses Selenium (ChromeDriver) to visit one or more dynamic web pages, wait for their tables to finish rendering, and export the complete content to a clean CSV (JSON as a secondary option). The pages rely on JavaScript pagination and lazy loading, so simple HTTP libraries won’t work—reliable browser automation is essential. Key points of the job • Employ explicit waits to ensure every row, even those revealed by “Next” buttons or infinite scroll, is captured. • Keep column headers intact and map each cell accurately. • Handle common hurdles such as cookie pop-ups, login prompts (if I supply credentials), and unexpected client-side alerts. • Write clear, modular code with comments so I can tweak selectors or e...

    $27 Average bid
    $27 การประมูลเฉลี่ย
    118 คำเสนอราคา
    Dynamics 365 Franchise Notifications
    11 ชั่วโมง left
    ยืนยันแล้ว

    I already have Microsoft Dynamics 365 Field Service creating Work Orders and, at the moment a Work Order is created, a Power Automate flow fires off an email and a Twilio SMS/MMS to the customer. The challenge is that the same instance also dispatches for multiple franchisees, each with its own name style, street address, local phone number and logo. I want the flow to look at the customer’s assigned Business Unit or Territory and automatically merge the correct franchise data into every message. See attached Franchise-Aware Customer Email, SMS and for details and instructions but not limited. What the message must hold every time it goes out: • Customer details • Franchisee details (name style, address, local phone number) • Work Order details • The fr...

    $461 Average bid
    $461 การประมูลเฉลี่ย
    164 คำเสนอราคา
    Android Application Development
    8 ชั่วโมง left

    Android Developer Required for app Development & Maintenance About the Project We are developing app, a work and services platform designed to connect people who are looking for work with customers/businesses who need workers and services. The platform allows users to discover, post, and book different types of jobs and services in their local area. We are looking for an experienced Android developer who can work with us on the Android application for both current development and long-term improvements. What We Need We need a developer who can: - Develop new features for the app Android app - Maintain and improve the existing application - Fix bugs and crashes - Improve app performance and stability - Integrate REST APIs - Integrate Firebase services - Implement push notificatio...

    $6 / hr Average bid
    $6 / hr การประมูลเฉลี่ย
    40 คำเสนอราคา
    PHP Integration Specialist Needed
    370 วัน left
    ยืนยันแล้ว

    I’m enhancing an existing PHP application and now need an experienced developer to wire in several third-party services. The core of the job is to analyse each provider’s endpoint requirements, extend or refactor the current codebase where necessary, and make sure the new integrations run smoothly alongside what is already in production. You will be working with modern PHP (object-oriented, namespaced) on a LAMP stack, so familiarity with RESTful requests, webhooks, JSON handling, and robust error logging is essential. Security is a must—token management, input sanitisation, and graceful failure states all have to be considered from the outset. I’ll give you access to the repository, environment details and any documentation the vendors supply. Your work should pl...

    $8 / hr Average bid
    $8 / hr การประมูลเฉลี่ย
    103 คำเสนอราคา

    บทความแนะนำสำหรับคุณโดยเฉพาะ