API Development Jobs

API Development is an effective way for software to communicate and interact with each other over the internet. It’s a great way for developers to expand the capabilities of a program or systems by creating interfaces and allow data to be shared between different types of technology. With an API, existing systems can connect and more advanced solutions can be made. Hiring an API Developer can enable businesses to streamline processes and enable a much faster integration of existing software solutions.

API Developers are skilled engineers specialized in creating new APIs and maintaining existing ones. They are responsible for developing and troubleshooting current APIs, designing APIs from standards-based web services, maintaining inventory and implementing authorization mechanisms. Additionally, they incorporate different technologies together to create advanced software solutions that integrate cloud systems like Amazon Web Services or MongoDB and APIs with point-and-click platforms, like WordPress or HubSpot.

Here’s some projects that our expert API Developer made real:

  • Creating advanced databases on different cloud systems
  • Linking between two cameras from a microscope
  • Interfacing with customizing Wordpress themes, Woocommerce themes and SMS services
  • Building secure back end systems to analyze different public APIs
  • Applying sophisticated authorization mechanisms
  • Creating comprehensive ecommerce websites using MERN Stack
  • Developing node APIs for exchange markets using Node.js, Web3.js, Ether.js
  • Automatically out of stocking items from supplier’s stock through an API system.

It is no surprise that good API Development is the cornerstone of many successful software solutions. Our expert API Developers are well experienced in developing suitable solutions for projects ranging from app development to SaaS applications, game development to enterprise system integrations. WithFreelancer.com, businesses can easily hire one of these skilled professionals to build their own bespoke projects that are perfectly tailored for their needs. So why not post your own project on Freelancer today and hire an expert API Developer?

From 51,128 reviews, clients rate our API Developers 4.84 out of 5 stars.
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    6 jobs found, pricing in USD

    I'm looking for an experienced WordPress developer to create a custom shipping calculator plugin that integrates the international services of Japan Post into my e-commerce website. The main functions of this plugin will be: - Calculating Shipping Costs: The plugin should calculate the shipping costs based on the weight of the products. It's crucial that the shipping rates accurately reflect Japan Post's pricing structure for both standard and express shipping options. - Multiple Shipping Options: The plugin should support both express and standard shipping options. This will allow customers on my e-commerce site to choose their preferred shipping speed. Ideal candidates for this project should have: - Strong experience with WordPress plugin development - Prior ex...

    $1129 (Avg Bid)
    $1129 Avg Bid
    88 bids
    API Integrations on WordPress 5 days left
    VERIFIED

    I need a capable developer with extensive experience in API integrations, specifically with WordPress, to integrate the PayPal API and a bank transfer payment method into my site. Key requirements include: - Fluent understanding and experience working with APIs, particularly PayPal's - Proficiency in WordPress and its various functions - Experience creating secure and reliable payment gateways One main feature that must be integrated within these payment methods is the functionality for subscription payments. This should be built with a user-friendly interface and have flawless functionality. Looking forward to people with the right skills sending in their bids for this project.

    $30 (Avg Bid)
    $30 Avg Bid
    28 bids

    I'm looking for a knowledgeable and experienced individual who can create a custom Endpoint for us. Here's what's important: - We want to go back to the Promo Standards API, and create a new connection for the Order Status API. This is the Endpoint Connection we want to work on first. Promo Standards - Order Status 2.0.0 Here is the M2 site - nvspromo.com. You cannot place orders on but Yes, the customer orders on nvspromo.com. Orders are accessed when a client logs into their user account - it is connected to our Zoho CRM and they can see their order history. Those Orders however, do not have any sort of Order Status connected to them. We will need to add the Order Status from our CRM onto the Magento Orders. Ideal candidates should have significant experience...

    $210 (Avg Bid)
    $210 Avg Bid
    20 bids

    If you are bidding on this project you will need to register at and watch our presentation so that you can understand the full scope of our project. Inside the presentation there is an animated segment on our marketing video that you must pay special attention to. Please mention the name of the main character in the explainer video so I know you watched it. Bids that failure to register and mention the character’s name will receive no reply. I am looking to build an automotive marketplace app that will have a range of features to make it user-friendly for both buyers and sellers. Key Features: - User registration and login, Search functionality, Listing creation and management - 24-7 Ai agents support, API integrations from multiple service providers - In app purchases, C...

    $2414 (Avg Bid)
    $2414 Avg Bid
    125 bids

    We are currently seeking a skilled developer to create a Chrome extension and associated API. This project will involve the development of an extension designed to interface with a specified financial website, which features dynamic data changes. The primary function of this extension will be to monitor the data displayed on the website's user interface (UI). When any alterations in this data occur, the extension should perform API calls to transmit this data to an API that stores it within a database. Additionally, there may be instances where the extension needs to make API calls based on UI events, retrieve data from the database, and display this information on the UI. There will also be certain situations requiring the extraction of data from external sources for storage in...

    $30 / hr (Avg Bid)
    $30 / hr Avg Bid
    44 bids

    I need to create an AWS Lambda function for user creation in DynamoDB. For Endpoint creation - API Gateway For User auth - JWT

    $178 (Avg Bid)
    $178 Avg Bid
    39 bids

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