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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    30 trabajados encontrados, precios en USD

    There is an existing back end codebase, we need to finish all missing requirements in 3 weeks, and 1 week for testing and bug fixes. There are two parallel tasks: 1- To fulfill the missing requirements, using MongoDB. This involves cooperation with the front-end team (a separate existing team). 2- To migrate existing (and new) queries from MongoDB to PostgreSQL using Liquibase. Multiple hires would happen, and each contract would be evaluated twice: one after two days, another one after one week. We would start by one member for each task, and add more whenever needed. The current OpenAPI (Swagger) is in - Latest versions are used (except using Java 18 because of Heroku). - Code first API - The application is automatically deployed, with updated OpenAPI, to be used by the front-end ...

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    25 ofertas

    I am looking for an experienced .net developer to build an M-Files plugin. The plugin will be built with C# or vb.net and it will connect to an external WEB Api to send invoice info and retrive a qr code to put it in the m-files invoice , It is important that the developer has experience with the M-Files API and basic knowledege in web API, as this is necessary for the plugin's success. Additionally, having experience developing desktop applications and knowledge of Windows services would be beneficial. If you have what it takes to build this plugin, please get in touch!

    $142 (Avg Bid)
    $142 Oferta promedio
    7 ofertas

    I am looking to create an interactive voice response (IVR) bot that can handle incoming telephone calls and provide customer assistance. The technology required for this project is audio-based. Ideally it can onboard as many phone number as possible, not limit to one number. Use twilio API or other similar APIs is one option. For now the response can be some test audio file. We can go from there.

    $36 / hr (Avg Bid)
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    Hello I am looking to have someone develop a FIRESTICK APP that will be able to log into a server over an API I provide, it will only ask for a 6 digit verification code, and then check if that code is active, no need for password or resets or anything like that. After the server authenticates the code then it will display one screen that will have text on it and send a REST API call every 30 seconds to check for updated text. I have attached a sample file of the screen after log in, it will change a little bit on what the text says but it will be very basic like that nothing complicated for version 1. Version 2 down the road I Want to be able to add in ADM, and then have the user be able to take the remote through different screens of text to show more windows. For now please give me...

    $200 (Avg Bid)
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    SvelteKit Portal 6 días left
    VERIFICADO

    I need an estimate for the following project. It is a portal which must be developed in SvelteKit 1.0. The technology to be used can be TypeScript or JavaScript. At the styling level, you can use a library such as Tailwind or similar. The portal must connect to a Restful API (VTiger) which we have hosted on a server. As for the API documentation, we already have a POSTMAN file with all the calls and examples. Regarding the functionality of the portal, the following are the points to be taken into account. 1. Access through login and password. 2. Once we have accessed, it should show a screen which will have a header, sidebar, main and footer (attached an example of the concept). 3. In the header there should be a logo on the left side and a user icon (avatar) with a menu showing th...

    $552 (Avg Bid)
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    47 ofertas

    Create API between Moodle and Assessment Test Server. Score Reports for Test Takers & Groups in moodle. After completing the test, results are appearing on Assessment Test Server instead of our moodle. So we should integrate Rest API so that results can appear on our moodle.

    $19 / hr (Avg Bid)
    $19 / hr Oferta promedio
    71 ofertas
    Flutter Mobile App for IOS/Android 5 días left
    VERIFICADO

    I will move fast. Don't bid if you can not invest time in a professional proposal (file) not just bid. If I see bogus bid with wrong time/cost/ content, it will be deleted. Read first. I am looking to develop a Flutter mobile app for both IOS and Android platforms. I need help with the design, development,, hosting, QA of this app. We will be incorporating 5-7 API providers for data which we will render/change in app. This is V1 app and must be released on June 15. V2 is on Sept 15 and then V3 is on Dec 15.

    $4785 (Avg Bid)
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    Kaspa Coin Mining Pool 5 días left
    VERIFICADO

    Development of a Mining pool backend for KASPA coin. Functionalities: stratum server with variable difficult payment (payment frequency, pool fee and minimum payment configurable) All info must be persisted on a PostgreSQL DB REST API end points with the following information: kaspa network difficult / network hashrate pool hashrate connected wallets workers connected pool lucky mined blocks Miner Statistics by Wallet (total payment, pending payment, total hashrate, current round total shares) Suggested Endpoint Structure: /api/pools /api/blocks /api/payments /api/miners /api/stats /api/miners/<miner-wallet-address> /api/miners/<miner-wallet-address>/payments /api/miners/<miner-wallet-address>/stats Info: Reference for Stratum servers: Language: No restriction DB: P...

    $2251 (Avg Bid)
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    45 ofertas

    Criar aplicativo em C para Windows e Linux para monitorar pastas e enviar arquivos específicos via API JSON. O Aplicativo deve funcionar em versões de Windows XP até 11. Linux Ubuntu seria o primeiro requisito. Pode ser desenvolvido um fonte só ou dois fontes separados. A aplicação terá um arquivo de configuração para determinar o comportamento do aplicativo. Ele deverá monitorar pasta e/ou sub-pastas específicas, buscando arquivos .xml e, ao encontrá-los, compactá-los em .zip e enviá-los via API JSON já pronta. A aplicação deve gerar logs em um servidor ELK já disponível. Será necessário também criar um segundo aplicativo que verifique ...

    $1925 (Avg Bid)
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    6 ofertas

    Our company is seeking a highly skilled and experienced Lead Developer to oversee our development team and contribute to the development of our products. The Lead Developer will be responsible for designing, developing, and implementing software solutions while leading a team of developers to ensure projects are completed on time and to the highest standards. We are working on few legacy application to cloud native application transformation projects which includes the application of latest technologies concepts like re-factoring of apps, implement Microservice Architecture, Micro-frontend etc. *Please bid with your per month charges* - Role is a full time role - 40 hours per week. - Fluency in english is mandatory. - NDA will be signed before the contract will be offered. Requireme...

    $1310 (Avg Bid)
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    38 ofertas
    plesk user creation using rest api 4 días left
    VERIFICADO

    I am looking for an experienced programmer who is able to help me set up users on a Plesk web hosting service using REST API. My hosting platform is UpCloud, and I need to create users who want to host their website on the server. For the API calls, I will be using the PHP language. The programmer should be familiar with Plesk and how to use its systems and tools in order to achieve the desired result. The programmer must have experience with programming for hosting platforms, with a focus on both UpCloud and Plesk. Additionally, experience with the REST API (particularly in PHP) would be greatly appreciated. I need someone who can understand my project requirements, and create a custom solution that meets those needs. Please let me know if you have experience working on similar projec...

    $23 (Avg Bid)
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    3 ofertas

    Hello, we need to integrate our GPS tracking system software with a software of a company called ANAS. It regards the sections below, according to what they wrote us. I attach you also a word document, that they provided us, with all the requirements. It's written in ITALIAN only, so please take your time to translate it. "Di seguito le url di accesso per i protocolli: - SOAP Standard (solo localizzazione) - SOAP Esteso (localizzazione + telemetrie + diagnostica +allarmi) - REST (solo localizzazione) Il formato dei dati è illustrato sia nel documento che troverà in allegato e sia nel descrittore del servizio fornito dalle url sopra citate. Non esiste ambiente di Test, ma solo il server di produzione (). Si resta a dispos...

    $742 (Avg Bid)
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    MERN Stack 4 días left

    Hello, my name is [Shivam]. I am looking for experienced back end developers to build a MERN stack API. I need someone with expertise in Node.js to build the backend architecture. No front end development is required. This project requires strong knowledge of Node.js and MongoDB so that all components integrate seamlessly. Accurate and timely delivery is expected, and knowledge of the MERN stack ecosystem is recommended. If you have any questions, please feel free to reach out. Thank you for your time.

    $37 (Avg Bid)
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    Our company is seeking a talented freelance Backend Developer to join our dynamic team. The ideal candidate will have a strong background in Spring Boot, Apache Kafka, and Restful API, and will be responsible for developing and maintaining our backend systems. Responsibilities: - Design, develop, and maintain backend systems using Spring Boot framework - Implement and maintain Apache Kafka for data streaming and messaging - Develop and maintain RESTful API endpoints for integration with front-end systems - Collaborate with front-end developers and product owner to ensure seamless integration of systems - Troubleshoot and resolve technical issues in a timely manner - Participate in code reviews, design discussions, and team meetings Requirements: - Hands-on experience with Apache Kafka ...

    $14 / hr (Avg Bid)
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    50 ofertas

    I want to build an app that a user can use to enter their details in and it prompts chat gpt to deliver customised specific information that can easily be adjusted by the user with further prompts/feedback. I also want chat gpt to suggest products for sale online to the user based on their responses.

    $2911 (Avg Bid)
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    147 ofertas

    I need help in Api automation using rest to complete a assignment in my project to create new api test script

    $13 (Avg Bid)
    $13 Oferta promedio
    10 ofertas
    REST APIs, JS experts 3 días left
    VERIFICADO

    Looking forward for experts in using Rest APIs and work as per staging, pre production and production environment

    $104 (Avg Bid)
    $104 Oferta promedio
    17 ofertas
    crud-api-nextjs--- 3 días left
    VERIFICADO

    I have a app that needs a CRUD API. I want to be able to create, update, duplicate, delete, and view a brief (category) and topic (post). Each brief will have briefUrl, briefTags, briefTitle, briefDetail, briefSummary, and briefPostedAt. Also, each topic will have topicUrl, topicTags, topicTitle, topicDetail, topicSummary, topicPostedAt, and topicBriefId. The URL field will be small caps separated by (-), the tag field will be separated by a comma (saved as an array), and the detail field will be a markdown editor. Here’s the demo video ~

    $22 (Avg Bid)
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    10 ofertas

    Requirement: Custom API Creation Implemented at : PHP-based Custom Warehouse Platform for which API needed : Emphasize on "BOL" as the primary focus. Familiarity with Opencart, Magento, and Exact platform would be advantageous." What data we need fetch : We need to get orders and order details in real-time. As client has WAREHOUSE so he wanted his end client's store ORDER get auto synch with the help of API Who can Apply : Those who have similar experience and having expertise in creating connection API Do we need 1 Company/Person do all API : If yes, its GOOD, if not even any 1 API can be created that also good to go. SUMMARY : We are seeking an expert Connector API Developer who specializes in creating bridging APIs between a custom warehouse and eCommerce st...

    $832 (Avg Bid)
    $832 Oferta promedio
    36 ofertas
    crud-api-nextjs-- 3 días left
    VERIFICADO

    I have a app that needs a CRUD API. I want to be able to create, update, duplicate, delete, and view a brief (category) and topic (post). Each brief will have briefUrl, briefTags, briefTitle, briefDetail, briefSummary, and briefPostedAt. Also, each topic will have topicUrl, topicTags, topicTitle, topicDetail, topicSummary, topicPostedAt, and topicBriefId. The URL field will be small caps separated by (-), the tag field will be separated by a comma (saved as an array), and the detail field will be a markdown editor. Here’s the demo video ~

    $25 (Avg Bid)
    $25 Oferta promedio
    15 ofertas
    crud-api-nextjs- 2 días left
    VERIFICADO

    I have a app that needs a CRUD API. I want to be able to create, update, duplicate, delete, and view a brief (category) and topic (post). Each brief will have briefUrl, briefTags, briefTitle, briefDetail, briefSummary, and briefPostedAt. Also, each topic will have topicUrl, topicTags, topicTitle, topicDetail, topicSummary, topicPostedAt, and topicBriefId. The URL field will be small caps separated by (-), the tag field will be separated by a comma (saved as an array), and the detail field will be a markdown editor. Here's the doc ~ Here’s the demo video ~

    $26 (Avg Bid)
    $26 Oferta promedio
    9 ofertas
    Build a Plugin for Rise CRM 2 días left
    VERIFICADO

    We have a couple of plugins that we are needing to have built for Rise CRM... Here is the documentation for building custom plugin If you are interested please respond.

    $15 / hr (Avg Bid)
    $15 / hr Oferta promedio
    49 ofertas

    I have a part-time job on php, html, css, javascript, REST API integration. Working knowledge with Sharepoint API, PowerApps would be plus but not required. You must be available to work and reply in EST business hours. Let me know if you are interested.

    $160 (Avg Bid)
    $160 Oferta promedio
    78 ofertas
    crud-api-nextjs 2 días left
    VERIFICADO

    I have a app that needs a CRUD API. I want to be able to create, update, duplicate, delete, and view a brief (category) and topic (post). Each brief will have briefUrl, briefTags, briefTitle, briefDetail, briefSummary, and briefPostedAt. Also, each topic will have topicUrl, topicTags, topicTitle, topicDetail, topicSummary, topicPostedAt, and topicBriefId. The URL field will be small caps separated by (-), the tag field will be separated by a comma (saved as an array), and the detail field will be a markdown editor. Here's the doc ~ Here’s the demo video ~

    $19 (Avg Bid)
    $19 Oferta promedio
    13 ofertas
    Excel Power Query Rest API 2 días left
    VERIFICADO

    I am looking for a freelancer to help me figure out how to use Excel Power Query in accessing REST API. I will share my screen and you will show step by step how to to do that. Kindly type AP on the top of your bid.

    $8 / hr (Avg Bid)
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    10 ofertas

    We already have a RESTFull swagger app running on a local domain. We want the RESTFull service to be externally accessible and secured.

    $162 (Avg Bid)
    $162 Oferta promedio
    9 ofertas

    Location - Nashik/Pune Price- 50k - 80k per month Experience - 4-5 years I'm looking for a freelance iOS Developer to work on a mobile app project. Specifically, I need an experienced individual who has experience with iOS app development and is well versed in the latest version of Swift 5. I'm not looking for a team of developers, as this project is relatively small and I need a single developer to create this project for me. I have some specific requirements for the project, so it is important to me that whoever takes the job has a good understanding of what I need. - Must have hands on experience with Swift, Cocoa Touch, Pods, Core Data, Core Animation, etc. - Experience with offline storage, RESTFUL API integration, Multi-Threading and performance tuning - Knowledge of UI/U...

    $1226 (Avg Bid)
    $1226 Oferta promedio
    24 ofertas
    laravel api with exist database 7 horas left
    VERIFICADO

    we are converting our project to react so we need laravel api from exist database only individual no company "HFHGJ%^$$##$#$" add in your bid otherwise report

    $160 (Avg Bid)
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    57 ofertas
    looking YII developer -- 2 7 horas left
    VERIFICADO

    i am looking YII developer who can do customize changes in API.

    $353 (Avg Bid)
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    10 ofertas

    Desenvolvedor com conhecimentos em NodeJS e Typescript, para integração da nossa plataforma com as api de cada uma destas plataformas e pagamento feito por integração feita e com valores para cada uma Amazon (valor por esta integração entregue R$800,00) Ali express BR (valor por esta integração entregue R$800,00) Netshoes (valor por esta integração entregue R$600,00) Magazine luiza (valor por esta integração entregue R$600,00) B2W (valor por esta integração entregue R$600,00) Via Varejo (valor por esta integração entregue R$800,00) shopify (valor por esta integração entregue R$800,00) Nuvem shop (valor por esta integração entregue R$800,00) loja inte...

    $842 (Avg Bid)
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    7 ofertas

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