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 111,233 reviews, clients rate our RESTful API Developers 4.86 out of 5 stars.
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    17 jobs found, pricing in AUD

    I need a romanian backend developer to integrate an existing invoice/billing software (project is 4-5 years old and got updated quite often, so code is pretty clean) with the ANAF e-factura system via their API. The software is live and functioning, written in Symfony PHP (both frontend and backend). Key responsibilities: - Modify the software to send invoices via e-factura API to ANAF. Ideal skills: - Experience with API integrations or e-factura API.

    $725 (Avg Bid)
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    We are looking for a company which are expert in frontend and backend development to help us develop the following components: 1) Mobile App development (Android and iPhone packages): using Flutter language. 2) Backend development: using JavaScript or Python. The backend should be built as a microservice architecture to be able to handle thousands of requests per minute with ability to scale up and down and ability to have multiple databases read instance. For data storage we need your recommendation to use SQL or/and no-SQL data storage. 3) Web Console Development (Salon Console and Central Console): using HTML5/CSS/JavaScript (NodeJS) 4) Simple Website to present our service to the public: using HTML5/CSS/JavaScript (NodeJS) The design already made for all the components; PDF-exported...

    $6651 (Avg Bid)
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    I'm in need of an experienced Python developer with experience in python clients for restful APIs. An existing asynchronous client has been developed. The existing client includes an and separate endpoint api files. This project will: 1. Develop Pydantic models for all endpoints. API Documentation () Please note, there is mention of an OpenAPI documentation. This is for a v2 API that is not yet complete. The URL above includes a page with endpoint documentation at the end of the page. I need models for all endpoints. I can provide a sample json extract. You can use or similar and this will get you 90% there. However, the json extract does include empty values, which translate to None via the codegen tool. If you go this route, you will need to manually change the None values in ...

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    NDA
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    Hi , Need react develops who can help me with resolving issues . I will pay monthly basis

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    We are looking for a skilled professional to thoroughly test our cloud IoT solution focusing on backend services, APIs, web interfaces, and data processing pipelines, which are all hosted on Azure Cloud Services. The job requires: - An in-depth understanding of APIs and backend services - Experience with data processing pipelines - Azure cloud proficiency - Problem-solving attitude; - Proficiency in test automation frameworks and tools, such as Selenium, Appium, or similar technologies. - Familiarity with scripting languages (e.g., Python, JavaScript) for test automation and data manipulation. - Strong analytical and problem-solving skills, with a keen attention to detail. - Strong communication skills, verbal and written in both Portuguese and English languages.

    $44 / hr (Avg Bid)
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    Are You Ready to Dive into a Realm of Possibilities? Seize the opportunity to join a tech powerhouse with an exceptional team and a world of diverse opportunities. Make-it Insight invites you to embark on a journey as a frontend developer. Where you'll be part of an extraordinary team, engage in exciting activities, work with fascinating clients, tackle varied and challenging tasks, and enjoy exceptional benefits. Who You Are We are looking for an experienced and passionate frontend developer with strong skills in TypeScript and React to join our team and be a key player in developing our innovative IoT solutions. As a frontend developer, you will work closely with our UX designers and product owners to create user-friendly and scalable applications that deliver an exceptional user...

    $50 / hr (Avg Bid)
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    I am in need of a versatile full stack developer with a broad understanding of a variety of technologies for a web development project. Though specific programming languages weren't specified, familiarity with JavaScript, Python, and Ruby are desirable. Key aspects of your application should include: - Your professional experience: Detail your extensive experience in full stack web development, making sure to highlight the range of projects you were involved in. The successful bidder will work on: - Web Development: The core focus of this project revolves around web development. Please provide evidence of your proficiency and versatility in this field. Ideal skills and experience for the job include competency in JavaScript, dot net and web api along with practical experience in...

    $262 (Avg Bid)
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    I am looking for a skilled Asterisk developer to customize and integrate my existing AI systems into Asterisk. Specific tasks include: - Integrating Asterisk with intelligent speech recognition and natural language processing systems. - Incorporating chatbot functionality for automated customer support. - Implementing AI-powered call routing and prioritization. The ideal candidate should have prior experience in Asterisk customization, AI integration, and development. Knowledge of speech recognition, natural language processing, chatbot technology, and AI-based routing is crucial for this project.

    $79 / hr (Avg Bid)
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    I'm seeking an experienced developer versed in API testing using existing tools such as JMeter and others. The project focus is on API testing automation and the key aim here is to ensure API functionality. Scope necessary for the role includes: - Configure an existing tool to test all of our API endpoints. - Checking and guaranteeing the functionality of the API. - Proficiency in at least one API testing tool The API in question is used as a files check layer before uploading to S3. The users can upload files, list, download, and more. The API allow synchronous requests and async requests. We need to automate the testing in order to answer the following questions. - Are all the endpoints of the API working? - How much time is taking every endpoint (average time maybe)? - What was...

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    I'm urgently seeking knowledgeable developers who specialize in the LAMP stack, specifically: Linux, Apache, Python, and MySQL. Expertise in REST API is also a requirement. Key responsibilities: - Develop, test, and debug my project using LAMP stack and REST API. - Ensure the smooth operation of all system components. - Complete the project as soon as possible. While the preferred REST API framework has not been specified, experience with any renown REST API framework will be considered advantageous. To be successful in this role, you should have substantial experience with these technologies. Proven success in similar projects, alongside the ability to work quickly yet efficiently, will be highly valued. I need an expert who can hit the ground running due to the urgent timelin...

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    As someone keen on monitoring the Description fields from the Case Object, I am looking for a proficient Salesforce API developer. The individual will set up an API that can efficiently download custom reports on a schedule with an expansive 100 column capacity. This person should be skilled at: - Initiating automatic report downloads at designated times - Including specific fields in the reports, in this case, Description from the Case Object - Wrangling large datasets, as reports will require dealing with upwards of 100 columns. The chosen freelancer should have experience with Salesforce API and data handling. Familiarity with Salesforce's Case Objects is advantageous.

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    I am looking for a freelancer who can integrate the PayPal Checkout service into SendPulse service. The ideal candidate should have experience with API integration and be able to redirect users to a separate PayPal page for payment processing. We require this procedure: 1. SendPulse issues a PayPal link for the customer. 2. PayPal Payment page opens and there are option to pay by Debit Card , Credit Card. 3. After payment successful the api send back to SendPulse. 4. SendPulse receives the unique payment status as : successful payment , rejected payment or pending payment. Skills and experience needed for this project: - API integration - PayPal Checkout service integration - Strong problem-solving skills The job will be through Anydesk and Zoom Call

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    We are seeking an experienced IT professional or engineer to create a comprehensive guide and develop software for a prototype of a Raspberry Pi-based mobile hotspot, integrating 4G/5G/LTE modem capabilities. The prototype aims to demonstrate a pay-by-time access model for internet connectivity. Please read this description all the way down to the end and follow the rules of posting there said. RESPONSIBILITIES 1. Hardware Assembly Guide: - Develop a detailed, step-by-step documentation on assembling the Raspberry Pi with a 4G/5G/LTE modem kit. This should include a list of required components, wiring instructions, and any necessary configuration steps. 2. Software Development: - Code and implement software on the Raspberry Pi that enables the device to function as a mobile hot...

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    Overview: Seeking experienced Core PHP developer to update existing APIs and develop new ones for grocery app, admin panel, and driver app. 60-70% of API work already done; focus on updates and new features. Responsibilities: * Review existing API architecture and functionality. * Gather updated requirements for apps from team. * Update existing APIs to reflect new requirements. * Develop new APIs for additional features. * Ensure seamless integration with existing system. * Implement security measures and authentication. * Test thoroughly for bugs and optimize performance. * Coordinate with team for front-end integration. * Provide documentation and support. Requirements: * Proven Core PHP API development experience. * Familiarity with maintaining and updating APIs. * Proficiency in ...

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    I'm seeking an experienced Python engineer to automate testing for a RESTful API. This role requires proficiency in both data retrieval and manipulation functions. The ideal candidate must also be skilled in the following areas of data validation: - Validating the response data structure - Validating specific values in the response - Validating status codes This challenging task requires a keen eye for detail and a clear understanding of Python and RESTful APIs.

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    I currently have a website in React. The website is mostly to display users biometrics such as co2 levels, heart rate, hrv, spO2 etc. I need to integrate with the freestyle libre3 api and also the polar api. I need an interface for the end user to enter their details for both api. Their api details will be stored in postgres but the actual data from the api will be in influxdb which is a time-based db. Right now data is based on sessions. So with our app that measures co2 levels it creates a session which a start and end time. The data from freestyle libre3 has data 24/7 with glucose levels every minute or two. So the data from the api that we save has to match the time of currently stored sessions. In other words the data we save to that session will be only the data that were during t...

    $807 (Avg Bid)
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    Am un web app scris in Symfony PHP (front + back) si doresc sa integrez e-factura in el prin API-ul celor de la ANAF. Practic vreau sa am un buton in aplicatie pe care cand il apesi trimite toate facturile la ANAF (fara dubluri daca sunt deja incarcate). Aplicatia este deja functionala si live de vreo 4-5 ani, avand update-uri destul de frecvent.

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