RESTful API Jobs

RESTful API stands for Representational State Transfer Application Programming Interface, a term coined by Roy Fielding in 2000. A RESTful API allows an application to communicate with other applications. It is based on the structure of a website, where the data and information are stored in the form of resources. RESTful APIs make use of these resources to provide a certain level of accessibility and data exchange between different systems. This makes web development more efficient, as resources can be accessed easily and quickly.

A RESTful API Developer is responsible for designing and developing APIs to facilitate communication between different applications. The Developer will use their existing skills in web development to create APIs that are secure and reliable, that can provide clients with the ability to access resources for different types of usage. The Developer will also ensure that the APIs are well documented so that any updates or changes to their backend programming environment don't cause any disruptions with existing communication workflows.

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

  • Creating browser extensions using Microsoft Graph API
  • Building webpages for flight searches & results
  • Developing applications for React Native in PHP
  • Retrieving data through various APIs, presenting it in a table format & sending email notifications
  • Developing & integrating simple authentication functions into Laravel apps
  • Integrating WordPress REST APIs into mobile apps via PHP
  • Building middleware systems to convert HTTP GET requests into REST calls
  • Developing programs in C# .NET using the WordPressPCL Package Library
  • Developing cloud services programs using Cloud Flare's API
  • Creating tools to trigger Customer orders with CSV file uploads

At Freelancer.com, our RESTful API Developers are highly experienced professionals dedicated to delivering innovative solutions that meet our clients' specific needs! Our Developers have successfully completed various projects for a wide range of clients, enabling quick and secure data exchange between applications. If you’re looking for an experienced developer to create an efficient, reliable and secure API system, then post your project now and hire the most suitable API developer here on Freelancer.com!

From 104,225 reviews, clients rate our RESTful API Developers 4.87 out of 5 stars.
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    18 jobs found, pricing in USD
    NextJS Typescript Developer 6 days left
    VERIFIED

    I am looking for a NextJS Developer to help my team with a web based project we are working on. I already have designs and wireframes ready. Your role will be developing the designs and if possible, integrating the APIs. The ideal candidate should have experience with NextJS, Typescript , Material UI, SCSS, Rest APIs and be able to work within a tight time frame of one to two weeks. I will be making payments based on the number of pages developed from our figma. So let me know your quote for. 1. Developing a page? 2. Developing the page and integrating the API(APIs will be provided)?

    $1140 (Avg Bid)
    $1140 Avg Bid
    107 bids

    Urgent Requirement I am looking for a skilled Asp.Net Core RESTful API and Angular developer to work on my project. Asp.Net Core Version: 6.0 Database Integration: Yes, there is an existing database that needs to be integrated with the RESTful API. Angular Front-end Features: Custom UI Design Ideal Skills and Experience: - Proficiency in Asp.Net Core API and Angular development - Experience in integrating databases with RESTful APIs - Strong UI/UX design skills - Knowledge of User Authentication and Data Visualization is a plus Please provide examples of previous projects and relevant experience when applying for this job.

    $150 - $451
    Sealed
    $150 - $451
    14 bids
    wordpress plugin 4 days left

    We need a developer who can develop a plugin according to industry standards. We need a plugin for restaurant management system. User can order from the website while dine in and restaurant staff must get a dashboard where they should be able to track orders, payments, menu.

    $93 (Avg Bid)
    $93 Avg Bid
    11 bids
    Odoo integration 4 days left

    Odoo Integration Project all APIs/ documentation will be provided. I'm looking for an experienced Odoo developer who can: 1- integrate custom module and accounting module with mobile application. 2- integrate accounting module with bank . Skills Required: - Strong experience in Odoo development and integration - Proficiency in Python programming language - Expertise in Odoo modules such as purchase and Accounting - Familiarity with custom module development The expected timeframe for completion is more than 2 weeks. The developer should be able to deliver the integrated solution within the specified timeframe. If you have the necessary skills and experience in Odoo integration, please provide examples of your previous Odoo projects and explain your approach to integrating diffe...

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    30 bids

    I want 4 web pages which are similar to mobile.de.

    $151 (Avg Bid)
    $151 Avg Bid
    96 bids

    We are seeking an experienced developer to create a custom plugin app for our Shopline e-commerce platform. The primary functionality of this plugin will be to modify the standard URL structure Shopline generates, specifically by removing the 'collections' and 'products' segments from the URLs. Objectives: URL Customisation: The plugin must allow Shopline store administrators to customise their URL structure by removing unnecessary path segments like '/collections/' and '/products/' from the standard URL structure. The goal is to have cleaner, more concise, and user-friendly URLs. SEO Maintenance: While altering the URL structure, it's crucial to maintain SEO best practices. The plugin should automatically handle 301 redirects to ensure...

    $305 - $914
    Sealed
    $305 - $914
    68 bids
    implement post api 3 days left
    VERIFIED

    I am looking for a skilled developer to implement a post API in Python/Java/Node.js using Flutter. The ideal candidate should have experience with Flutter and be proficient in the chosen programming language. Requirements: - Proficiency in Python/Java/Node.js and Flutter - Ability to implement a post API for sending data - Familiarity with API endpoint design and implementation - Attention to detail and ability to follow a detailed design Responsibilities: - Implementing the post API functionality for sending data - Collaborating with the client to ensure the API endpoints align with their design - Testing and debugging the API to ensure functionality and accuracy If you have experience with Flutter and the chosen programming language, and you are confident in your ability to implement ...

    $42 (Avg Bid)
    $42 Avg Bid
    13 bids
    SMART on FHIR 2 days left
    VERIFIED

    ***Must be FHIR/HL7 Certified with Proof*** We are seeking a skilled freelance contractor to spearhead the integration of our existing mobile app with Epic and Cerner electronic health record (EHR) systems using the Fast Healthcare Interoperability Resources (FHIR) standard. Role and Responsibilities: As a Health Tech Expert specializing in FHIR integration, you will be responsible for: Collaborating remotely with our development team to grasp the mobile app's architecture and functionalities. Conceptualizing and executing FHIR-based integration strategies to seamlessly connect the mobile app with Epic and Cerner EHR systems. Ensuring unwavering adherence to HIPAA compliance and robust security protocols throughout the integration lifecycle. Configuring the app to proficiently exch...

    $1500 - $3000
    Sealed
    $1500 - $3000
    11 bids

    We aim to develop a desktop application to compete with MacGPT, which facilitates seamless native interaction with ChatGPT from the menu bar of a Mac computer. The core functionalities should mirror those of MacGPT including: * Global Access: A central textfield like the search bar, for interacting with ChatGPT anywhere on the desktop by using a keyboard shortcut. * Inline Typing Assistance: Trigger-based text assistance within text fields (ie in Notes, Ms Word, Browser etc…) * Menu Bar Access: Quick access to the ChatGPT Web interface or natively, via the drop down menu bar. * Application Window Access: Enable access to a dedicated window that mimics the menu bar access drop down. * Easy Copying: Functionality to copy entire transcripts of conversations. * Compatibility wi...

    $4706 (Avg Bid)
    NDA
    $4706 Avg Bid
    25 bids
    I need help with app login 9 hours left
    VERIFIED

    i am creating an app but i have attached the endpoints it work perfectly testing with postman but it not working on the app and i have passed all necessary quires but still no success

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

    We are looking for an expert who can define an openAPI yaml definition for the opensource variant of vtiger 7.4.0/7.5.0 The openAPI definition shall be used for generating API clients from the definition. E.g. we will use maven openapi-generator-maven-plugin 7.0.0 We require an expert on vtiger API along an even better expert on openAPI definition creation. Postman collection is available: delivery: - in our git on our premise (access will be granted to you) - working on our CI - working on our environment (access to a test env will be granted to you)

    $64 (Avg Bid)
    $64 Avg Bid
    6 bids

    We look for Java Spring-Boog and Core-Java senior expert developer Your job will be to re-implement this api in java / spring-boot Mandatory!!!! You have to have a installed the docker environment on you PC/Laptop and You document EACH step step to make the up and running along with a docker compose environment to make the new spring-boot api running with it. Milestones MS1: suggest if an openAPI definition would reduce your workload, since REST server and client can be generated MS2: reImplement as spring boot service the endpoints documented here: and: MS3: provide a docker compose incl. all steps to make your code available in a container Implementations: - best practices with openAPI - best practices with spring boot NO UI for now required! NO database required! No REST en...

    $118 (Avg Bid)
    $118 Avg Bid
    22 bids

    We look for Java Spring-Boog and Core-Java senior expert developer for vtiger integration Your job will be to implement requirements which are mutually agreed on this API You will get a postman collection, which is already working well. And you need to convert it into a openapi 3.0.x yaml file. This openapi definition shall create java api-classes per each vtiger module/type listed in "?operation=listtypes" api call. Mandatory!!!! You have to have a installed vtiger on your local environment to be able to use it properly and to test it properly! you can run locally via: Milestones are wrapper implementations ontop of openapi for making the access to vtiger easier: MS1: provide existing openapi yml or json file (preferably ver3.x) Implement a REST api call to - find all us...

    $59 (Avg Bid)
    $59 Avg Bid
    19 bids

    We look for Java Spring-Boog and Core-Java senior expert developer Your job will be to implement requirements which are mutually agreed on this API (cora-api) and You will get the java client implementation to access the API. Your job is to provide the functions to be more from the UX perspective and to implement them as serivce methods and to call the service-class as junit tests. Mandatory!!!! You have to have a installed proxmox on your local environment to be able to use it properly and to test it properly! you can run locally via: Milestones MS1: Delivery of to reproduce your steps of the proxmox installation on virtualBox Implement a REST api call to CRUD users and groups - find all users and return the users as full DTO (use jsonschema2pojo to get all fields generated) Li...

    $146 (Avg Bid)
    $146 Avg Bid
    26 bids

    We look for Java Spring-Boog and Core-Java senior expert developer Your job will be to implement requirements which are mutually agreed on this API (cora-api) Mandatory!!!! You have to have a installed opnSense on your local environment to be able to use it properly and to test it properly! you can run locally via: Milestones MS1: provide existing openapi yml or json file (preferably ver3.x) Delivery of to reproduce your steps of the opnSense installation on virtualBox Implement a REST api call to List<VoucherDTO> listAllVouchers() List<VoucherGroupDTO> listAllVoucherGroups() List<VoucherProviderDTO> listAllVoucherProviders() List<VoucherDTO> expireVouchers(List<VoucherDTO>) List<VoucherDTO> createVouchers(List<VoucherDTO>) same for templa...

    $78 (Avg Bid)
    $78 Avg Bid
    13 bids

    We look for Java Spring-Boog and Core-Java senior expert developer Your job will be to implement requirements which are mutually agreed on this API Mandatory!!!! You have to have a installed gitlab CE on your local environment to be able to use it properly and to test it properly! you can run locally via: Milestones MS1: Implement a rest api call to - find all users and return the users as full DTO (use jsonschema2pojo to get all fields generated) List<UserDTO> findAllUsers() List<UserDTO> findUsers(List<UserDTO> pUsersByExampleToFind) - add users List<UserDTO> addUsers(List<UserDTO> pUsersToAdd) - update update users List<UserDTO> updateUsers(List<UserDTO> pUsersToUpdate) - block/ban users List<UserDTO> blockUsers(List&l...

    $77 (Avg Bid)
    $77 Avg Bid
    36 bids
    Aplicacion SmartTV 6 days left
    VERIFIED

    Necesito una App para SmartTV para Android y Tizen. Basicamente es una presentación de Imagenes y Texto, Separada por Secciones. Con un timer, pero que también sea navegable con el control remoto. La fuente de datos es una API Rest. Preferentemente podría ser una PWA, aunque escucho sugerencias.

    $186 (Avg Bid)
    $186 Avg Bid
    11 bids

    [POSIZIONE] Sviluppatore Web Full Stack [REQUISITI] - Conoscenza di Php, HTML, CSS, JavaScript e MySQL; - Familiarità con almeno 2 framework (php + javascript); - Conoscenza approfondita delle principali piattaforme e soluzioni all'interno dell'ecosistema WordPress; - Esperienza con i software di controllo di versione, in particolare Git; - Competenza nella creazione e nell'utilizzo di API RESTful; - Forti capacità di comunicazione verbale e scritta in inglese. [IL RUOLO] In qualità di Full Stack Web Developer, le vostre responsabilità principali comprenderanno: - Sviluppare software web utilizzando le tecnologie indicate nei requisiti; - Mantenere e migliorare le soluzioni software aziendali; - Gestione dei progetti e coordinamen...

    $12 / hr (Avg Bid)
    $12 / hr Avg Bid
    45 bids

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