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!

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    Hi there, we need you to integrate data coming from our own GPS tracking system (GPSWOX) towards a route provider called PROJECT44. they gave us the documentaion available here, plus the link to test our data: Owner ID: MasSystem

    $34 (Avg Bid)
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    VPN Mobile App 5 zile left

    We are seeking a skilled React Native mobile app developer to join our team and create a VPN mobile app compatible with both Android and iOS platforms. Our timeline for project completion is less than 1 month. UI Design: The desired UI for the app should be similar to the design found at the following link: However, the colour code and logo images will be provided by us. Responsibilities: Collaborate with our team to define app requirements and features. Develop and maintain a secure and user-friendly VPN mobile application. Implement encryption and security protocols to protect user data. Ensure compatibility with both Android and iOS platforms. Work within tight deadlines to deliver high-quality results. Ideal skills and experience for this job include: Proficiency in React Nativ...

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    Cloud Portal Development 4 zile left
    VERIFICAT

    Cloud Portal Development Features required for the cloud portal: - Customizable user interface Users of the portal: - Both internal and external users Preferred development platform: - Microsoft Azure We are looking for a skilled developer to create a cloud portal with a customizable user interface. The portal will be used by both internal employees and external customers. The preferred development platform for this project is Microsoft Azure. Scope of Work: The scope of work for this freelance project includes but is not limited to the following: Project Kickoff: Conduct a project kickoff meeting with the client to discuss project goals, requirements, and expectations. Requirements Gathering: Collaborate with the client to gather detailed project requirements. Define user stories,...

    $81 (Avg Bid)
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    We are looking for an expert who can define an openAPI definition for the openSource variant of vtiger 7.4.0/7.5.0 The openAPI definition shll 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:

    $64 (Avg Bid)
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    I have a C# .NET framework 4.8 Windows Forms Application that interacts with a website using digital signature and Web Requests. I need to integrate an external auth provider that issues a token and I need to get that token and attach it to requests. The external auth provider uses a digital signature to sign the login requests, and issues the token that needs to be captured. We need proficiency in using tools like Fiddle to understand all requests and replies, and replicate them in the C# code with HTTPClient / HTTPRequests and similar, since all must be executed in background. I would prefer to avoid using of external tools or libraries like Selenium. I will pay until the login is finished and the application is returning valid responses (not error pages because of authentication). ...

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    I am looking for an experienced Android and IOS developer to create an innovative SocialMedia mobile application. This project is a social media project in which we will be creating mobile application for Android and IOS what will be in React -Native. It will be connecting it to the API’s of the server. What mean we will provide u these Server as well. What we have ready: - Figma Design for the Mobile App done by 90% rest it have to done by u - Laravel Backoffice done by 75% rest have to be done by u - Laravel Dashboard has no API and DB ready only static design - u have to create the API and we need the API Document fo that and this must be deliverd after u have done any Steps. - Also we have to asign a agreement before we start and also on Freelancer.com as well The App work of...

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    Backend Node Developer with Some React Experience I am looking for a skilled Backend Node Developer with some experience in React.js for a project that involves API development. Specific Backend Tasks: - API development Framework Preference: - Frontend Development: - Some experience in React.js is required Ideal Skills and Experience: - Strong knowledge and experience in Node.js and backend development - Proficiency in API development using - Familiarity with React.js for frontend development - Ability to manage databases and server configurations - Strong problem-solving skills and ability to work independently If you have the necessary skills and experience, and are available to work on this project, please apply. Steps 1. There will be a short trial 2. This project is started ...

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    We're looking for a skilled mobile app developer to create a comprehensive health and fitness app. The app will feature: User Authentication: Offering social sign-in, account creation, and guest options. Personalized Meal and Workout Plan Generator: A chatbot interface powered by GPT-4 will ask users questions and generate customized meal and workout plans based on their responses. Supplement Catalogue: A searchable, database-driven supplement catalogue with detailed product information. General Chat Feature: Another chatbot interface for general queries, also powered by GPT-4. This chatbot will need to have access to the supplement database via a middleware layer to answer real-time questions about all the supplements listed in the catalogue. Opt-In for Promotional Content: User...

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    Web API for Licensing Software 2 zile left
    VERIFICAT

    Web API for Licensing Software I am looking for a developer to build a web API for licensing software. The ideal candidate should have experience in PHP programming language. You will also need to know, or be willing to learn, how to work with FastSpring and its Web API, since it is my e-commerce provider. Database Creation: - I have a database created with a couple of tables, but open to creating a new one. It will be very simple (a users table and a licenses table basically) Security Requirements: - The API should have reasonable security measures to ensure the protection of sensitive data. The software I sell runs on desktop, Windows only, and it needs to query the API every so often to ensure the license is valid. The API will, in turn, need to communicate with the FastSpring API to...

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    PostMan Training. id230918 2 zile left
    VERIFICAT

    Postman Training for Beginners in API Testing - We are looking for a beginner-level Postman training. - About 1 hour of time. Ideal Skills and Experience: - Experience in API testing using Postman - Familiarity with RESTful APIs and HTTP methods - Knowledge of JSON - Ability to explain concepts and provide hands-on exercises for beginners. - Fluent English - Work over AnyDesk

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    Long Realtion Ship, best will be to have 2 Developer App and Laravel Developer, who can work with us directly and Step wise, follow our instruction is important We looking for an experienced Android developer and Laravel - vue.js developer Using MYSQL DB and RESTAPI to create an innovative SocialMedia mobile application. The design and branding of the app is already complete and ready to go. What we have ready: - Figma Design for the Mobile App done by 70% we working hard on it and we will Provide u that Step wise - Laravel Backoffice - ECommerce - FoodPortal we will Deliver by 90% rest have to be done by u - u have to create the API and the DB and we need the API Document - The DB and the APi going through Laravel - follow the document in the Attachment What our App have: 01. Feeds ...

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    API Connection to Betting Software Skills Required: - Experience with REST API integration - Familiarity with betting software providers - Proficiency in pulling data from APIs Project Description: I am looking for a developer who can establish a REST API connection to a betting software. The ideal candidate should have experience in integrating REST APIs and be familiar with betting software providers. Requirements: - The client already has an API key from the betting software provider, so the developer will not need to assist with obtaining one. - The primary data that needs to be pulled from the betting software is game results. If you have a strong background in REST API integration and are experienced with betting software providers, please submit your proposal.

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    We are a dynamic company specializing in multivendor e-commerce for the cycling industry, and we need a skilled Front End Developer. Our latest project revolves around a state-of-the-art marketplace built on the Vendure e-commerce framework, a headless solution powered by NodeJS. We need you to bring our vision to life by developing a polished front end for both our site and its admin panel (base design already functional, new design ready in figma) Primary Responsibilities: 1. Design, develop, test, and deploy the front end of our marketplace website (design in Figgma ready and approved). 2. Construct a user-friendly and intuitive admin panel for our internal operations (already designed in Figgma) 3. Collaborate closely with our backend team to integrate APIs and assure fluid communica...

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    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...

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    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 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 MS1: provide existing openapi yml or json file (preferably ver3.x) 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<User...

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    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 maybe helpful: Mandatory!!!! You have to have a installed matrix synapse on PC/Laptop and on your smartphone to run on your local environment. You document EACH step you can run locally via: Milestones MS1: provide existing openapi yml or json file (preferably ver3.x) Implement a spring boot service to invite users to the matrix. - sendNewUserRegistrations(List<UserDTO>) send a template e-mail to users to invite them to register an account - createNewPrivateGroupChats(List<GroupChatDto>, SpaceDto) create the list of (private) group chats into the given Space - inviteNewUsers(List<UserDTO>, List<GroupChatDto...

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    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 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 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) List<UserDTO> findAllUsers() List<UserDTO> findUsers(List<UserDTO> pUsersByExampleToFind) - add users List<UserDTO> addUsers(List<UserD...

    $156 (Avg Bid)
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    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 temp...

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    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 playground of mailcontrol / forcepoint cloud security gateway in access. Preferably as playground on a docker environment. (plz check this as part of your bid!) You document EACH step to reproduce a test/integration environment Milestones MS1: Implement a spring boot service to add new users to the e-mail subscription. - fetchEmailSubscriptionsAll() - fetchEmailSubscriptions(List<UserDto> pByExample) - addNewEmailSubscriptions(List<UserDto>) // UserDto contains a main e-mail => subscription e-mail and alias e-mail addresses, along with a details of add subscription screenshot - deleteEmailS...

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    30 oferte

    you are a fresher here? Require a quick win for gaining reputation here? this is a easy task, IF you are docker and java/springboot developer 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 maybe helpful: Mandatory!!!! You have to have a installed matrix synapse on PC/Laptop and on your smartphone to run on your local environment. You document EACH step you can run locally via: Milestones MS1: Implement a spring boot service to invite users to the matrix. - sendNewUserRegistrations(List<UserDTO>) send a template e-mail to users to invite them to register an account - createNewPrivateGroupChats(List<GroupChatDto>, SpaceDto) create the list of (private) group chat...

    $194 (Avg Bid)
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    25 oferte

    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...

    $80 (Avg Bid)
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    Hi There, Does anyone know how to stabilize the test cases together, for the test case of ag grid angular application with following framework structure page object model, data driven concept, TestNG and , selenium java. It's a freelance work. Please ping me if you are interested. Thanks

    $90 (Avg Bid)
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