API stands for Application Programming Interface, and it is an layer of interface that allows programs to interact with each other. An experienced API developer can build complex interactions between applications, making them faster, more reliable, and accurate. Whether you need a second opinion on your existing application or you want to create an entirely new application for your business, an expert API Developer can do the job for you.

An API Developer's job does not stop at developing. They can also work on design and implementation testing, guide through the entire architect process from prototyping to implementation, create custom system integration solution based on the project requirements, and collaborate with other teams to develop systems that meet customer expectations.

When hiring an API Developer through Freelancer.com, rest assured that they are as competent as any hired onsite software engineer.

Here’s some projects our experts have worked on:

  • Building custom interfaces to move large amounts of data efficiently between applications
  • Working with Javascript to allow websites to access external information relating to weather conditions
  • Creating Grafana dashboards for quick and easy visualization of data points
  • Developing scripts to connect external APIs with more heavy-duty platforms like Microsoft Azure
  • Debugging mobile apps involving fishing
  • Integrating AI capabilities into online shops
  • Automating regression tests so developers can work faster and more accurately

No matter what your business needs are in terms of API development, our expert freelancers are ready to take on the challenge and provide support whenever you need it. With expertise in debugging applications and web development, you're guaranteed to find the right developer for your project! So why wait? Post your project today at Freelancers.com and reap the benefits of working with an expert API Developer now!

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    Fast Track Booking App 6 dní left
    OVĚŘENÉ

    We're a startup in need of a skilled Native developer to expedite the launch of our booking application. The goal is to quickly establish an online presence. Project Requirements: User Management: User registration and login system. Profile management for users. Booking System: Users can select different types of bookings. View available slots based on selected criteria. Real-time booking and availability check. Payment Integration: Integrate popular payment gateways (PayPal, Stripe, etc.). Secure payment processing. Admin and Manager Dashboards: Admin: Manage users, bookings, and payments. Manager: Oversee bookings and user details. Security: Implement security best practices. Ensure the application is SSL certified. Ideal Skills: - Proficiency in Native development, with a ...

    €288 (Avg Bid)
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    Hey there! I am looking for someone who can take the example of an API with ComfyUI and adapt it to my needs. Here is the example - What I need to happen is that the JSON which is the ComfyUI workflow is dynamic so I can provide that in an API file / raw JSON to trigger the start of a workflow. I would also like the websocket to be hardcoded to a channel that I operate and that it is connected by default when the machine is on so that everytime that the script is run, it does not try to connect again. The final part is packaging this up with instructions so I know how to turn it on and run it on my local machine and then how I would call the endpoint. I have familiarity with using Ngrok for Automatic1111 in AI image generation so I plan to use Ngrok again to turn this locally into som...

    €107 (Avg Bid)
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    Dibutuhkan / dicari jasa pembuatan website slot/casino/judi online, yang sudah berpengalaman dalam pembuatan website slot/casino online, atau yang sudah menyediakan dengan white lable Tolong lampirkan juga portofolio website slot/casino online yang sudah pernah dibuat Di utamakan dari Indonesia Terima kasih

    €18 / hr (Avg Bid)
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    I'm looking for an expert who can assist me in understanding and utilizing the Pingen or Postgrid API specifically for the purpose of sending mail. Key Requirements: - Assist in explaining the APIs in Postman: I have a document that I need to send via mail using these APIs. I need someone familiar with these services to help me understand the process in detail. Ideal Skillset: - Expertise in Pingen or Postgrid API: A deep understanding of the API services provided by Pingen or Postgrid is essential. - Strong Communication Skills: The ability to explain the API concepts clearly and concisely is critical for this project. - Experience with Postman: Proficiency in using Postman for API testing and development is an advantage. It's important that you are able to provide a comprehe...

    €11 (Avg Bid)
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    I'm looking for a developer with experience in PowerApps and Azure integration to build a robust, online-only PowerApps application. Key requirements: - **Azure Resources Integration:** You'll need to set up the PowerApps application to retrieve and display data from our Azure resources or cloudspace - **Functionalities:** i will provide you detail information if you have worked on powerapps integration with azure servcies or cloudspace.. The ideal candidate should have hands-on experience with PowerApps, Azure, and prior experience with similar integration projects is a plus.

    €110 (Avg Bid)
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    I have a Java-based pipeline project set up in IntelliJ that processes CSV and JSON files to generate some output. I'm looking for a freelancer to enhance this project, specifically the following: - Handling Multiple Files: Currently it is handling one single csv and single json file and generating single output . The project needs to be made capable of processing multiple CSV and JSON files dynamically. The pipeline should process each file individually, generating triples for the Graph DB. - Scheduling: The enhancement should include setting up the pipeline to run on a scheduled basis. This means the pipeline should automatically pick up new files in a specified directory and process them at predefined intervals. Ideal applicants for this project should have: - Proficiency in Jav...

    €13 (Avg Bid)
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    Ich habe eine Kassen App für mein Lokal die heißt ready2order ich möchte es gerne mit Lieferrando und Dish Order verbinden. Wer kann mir da helfen?

    €475 (Avg Bid)
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    Adapt my Shopify API PHP Script 3 dní left
    OVĚŘENÉ

    I've an existing php file, which will set my orders as "fulfilled". I need another script which will mark my order as "ready_for_pickup" in Shopify. The scripts are triggered by monday.com. Only make an offer, if you are aware of the procedure to mark a Shopify order as "read_for_pickup". The current script is a one page script with around 200 lines. So it is a very fast task if you are aware of shopify api endpoints.

    €24 (Avg Bid)
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    I am in need of a skilled developer to create an API for my upcoming Android and iOS application. The API will be responsible for handling the login and logout functionality of the app. The API itself should: - Implement secure authentication, ensuring user data is handled safely - Successfully manage user logins and logouts across Android and iOS platforms Please note that I have not finalized the type of authentication mechanism to be used, so the freelancer will have the opportunity to suggest and implement the best method.

    €205 (Avg Bid)
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    I'm seeking an experienced developer to: - Design an intuitive, user-centric web interface that will interact with the Voiceflow API - Engineer a secure method for storing API credentials in Bubble's datastore - Ensure seamless data viewing and interaction for our anticipated user base of 100-1000 The primary aim of this web app is to easily integrate with APIs, offering a dynamic representation of the data returned by the Voiceflow API, facilitating effortless interaction and engagement from users. Ideal skills and experience: - Profound knowledge and experience with and its data store - Proven expertise in API integration, particularly with Voiceflow API - Track record of designing intuitive user interfaces - Proficiency in front-end development and user experience - Exp...

    €1223 (Avg Bid)
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    I am looking for a talented web developer to create a user management platform with a focus on document uploads. Key Features: - Quiz Functionality: The website should include a quizz feature that comes up after choosing one path of the website. - Document Upload Option: Users should be able to upload documents through the interface. - User and Owner Interface: I need a user-friendly interface for both regular users and owners of the platform. API Integration: - The website needs to have an integrated API that allows for seamless interaction with the uploaded files. Timeline: - The project should be completed within a month. Ideal skills and experience for the job: - Proficient in web development and user management platforms. - Experienced in API integration. - Skilled in providing ...

    €5638 (Avg Bid)
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    I'm creating a chatbot on the “Hello TARS” platform and need a freelancer to help me integrate it with Zapier. The chatbot's main functionalities will include sending user input data to a spreadsheet or database and fetching user-specific data as search results. Key Project Requirements: - Connect the chatbot with Zapier: I need the freelancer to establish a seamless connection between the chatbot and the Zapier platform. - Data Update and Management: The chatbot should be able to send user input data to a spreadsheet or database. This will involve creating a Zap that can handle this data transfer effectively and updating the database with the information. - Search Results: The chatbot should fetch user-specific data as search results. This functionality will help th...

    €30 (Avg Bid)
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    Seeking talented developers to create a dynamic feature for a Bubble app. The goal is to develop a code snippet generator where users can create, edit, save, and use snippets effortlessly. The ideal solution would be user-friendly and seamless. Innovation, functionality, and ease of use are key! Prize: $75

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    "Free history of sales, prices and damage insurance cars in the United States at Copart and insurance auctions IAAI" I am looking for someone who can make website similar to , , , autoauctionhistory.com. Idea is to check by VIN car lot from or - ended Auction with Final Price Open website, NO login area for users.

    €514 (Avg Bid)
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    We are seeking a skilled developer to integrate WhatsApp messaging into our existing hotel management system via API. The goal is to enable automatic notifications into the hotel staff's whatsapp account. They will serve the customers according to the items ordered from the hotel management system which will be sent via push notification to their whatsapp account. Key Requirements: 1. Implement WhatsApp API to send automated alerts from our system (e.g., transport booking confirmations, room service orders). 2. Enable two-way messaging capabilities for guests to communicate with hotel staff via WhatsApp. 3. Develop a method to scrape or extract necessary data from our current system to send accurate and timely information to guests. 4. Assess whether to use a third-party API or a cu...

    €176 (Avg Bid)
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    Integration Description for Shipment APIs **Objective:** Integrate the shipment creation API from `` into your shipping platform, enabling your users to create shipments directly through your system. **Endpoint:** `POST ` **Parameters and Description:** 1. **token (Required)** - **Description:** Authentication token for the API. - **Details:** It must be sent in the header. - **Example Value:** `OF4XbUwuQ0yj2bSO2Ejyg8PcllMGKzyRr0nA3W62JCLWi8siNk0IxwgUDNzDCopy` 2. **Shipment[type] (Required)** - **Description:** Type of shipment. - **Allowed Values:** `1` (Pickup) / `2` (Drop off) 3. **Shipment[branch_id] (Required)** - **Description:** ID of the branch. - **Allowed Values:** `1`, `2`, `3`, `4`, `5`, `6`, `7` 4. **Shipment[shipping_date] (Required)** - **Descr...

    €14 / hr (Avg Bid)
    €14 / hr Průměr. nabídka
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    I'm in need of a capable freelancer with proficiency in API integration, Google Sheets, and WhatsApp. The project's main focus is to enable a fluid integration between WhatsApp and Google Sheets. This is to automate and streamline the process of sending our clients updates about their specific orders. Key information to be sent to clients include: - Status of the order - Estimated delivery date - Information about the assigned tailor/installer. Freelancers who have experience in similar projects are greatly preferred. Strong communication skills are a must for this project to be able to grasp and fulfil our exact needs.

    €188 (Avg Bid)
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    I need a simple, yet effective digital product selling site. It will be a WordPress platform. The site is set up to sell digital products with a mobile money payment method. Here's what I need: - Digital Product Selling: The site will be selling digital products exclusively. It should be set up for easy mobile friendly - Mobile Money Payment: The primary payment gateway will be mobile money. I have the API for this and would need it properly integrated into the site. - WordPress: The site should be built using WordPress, allowing for easy maintenance and future updates. The site should be designed to handle the sales process seamlessly. The user experience should be smooth and intuitive, as I intend to allow guest checkout – no requirement for user accounts. This means the pay...

    €196 (Avg Bid)
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    I am looking for a Shopify expert to integrate the Fastlo API into my existing store. My primary goal is to enable faster shipping options through this integration. Key Requirements: - High level of customization: I need unique configurations and features to be set up in order to make the most of the Fastlo API. You should be able to tailor the integration to fit specific needs of my store. Your Responsibilities: - Assessing my current platform and its shipping processes. - Developing a customized integration plan for Fastlo. - Implementing the plan with thorough testing to ensure reliable functionality. - Providing clear documentation or guidance on managing the new system. Ideal Skills and Experience: - Extensive experience with Shopify and its APIs. - Proven track record of successfu...

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    We operate an insurance brokerage in Australia and require a payments solution to overcome a specific problem. Description: 1. When we sell car insurance on our website, our customers enter their details into a Stripe widget on our webform. 2. We collect the customer's payment in our account, and then face the problem of neededing to send that money to an insurance company. It cannot be done via credit card, as the customer's credit card informtion is encrypted, so we do it by way of bank transfer, which is extraordinarily difficult and time consuming. It's a large volume of payments. 3. We require a solution which can somehow securely collect a customer's credit card information and then communicate that information into an insurance company's credit card payme...

    €335 (Avg Bid)
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    I'm in need of a Magento developer who can handle both front-end and back-end tasks Magento headless Application with Vue.js. Key Responsibilities: - Implementing changes and enhancements to the website design and layout - Ensuring that the website design is responsive on all devices - Enhancing the user interface (UI) to improve overall user experience - Handling back-end tasks within the complete Magento stack - Magento APIs and GraphQL Ideal Skills and Experience: - Proven track record as a Magento developer - Proficient in both front-end and back-end development - Skilled in implementing responsive design and enhancing user interface - Experience with a variety of Magento themes I already have an existing Magento theme, so the chosen freelancer will have to incorporate the nece...

    €18 / hr (Avg Bid)
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    Consultor Experto en servicios Api WhatsApp Business Requerimientos : Hablar Español Consultor Experto

    €169 (Avg Bid)
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    I have both Yeastar Call Centre system and Ceipal API and I need a skilled professional to create a real-time integration between them. Key Integration Requirements: - Call logging in Ceipal - Click-to-dial from Ceipal - Automated contact creation in Ceipal from Yeastar calls and vice versa - Call Recording logging in Ceipal Ideal Skills and Experience: - Extensive experience with Yeastar Call Centre setup - Proficient in working with Ceipal API - Proven track record of successful real-time integrations - Knowledge of best practices in VOIP and API integration - Strong understanding of Call Centre and CRM operations If you have experience with Yeastar, Ceipal, API integrations and a good understanding of Call Centre operations, please get in touch. Your expertise will ensure a seam...

    €171 (Avg Bid)
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    I'm in need of a highly capable Sports Betting Bot that can automate the process of placing bets, monitor odds in real-time, and efficiently manage my bankroll. The bot should primarily support Bet365, FanDuel, Draft Kings, MGM, and Ceasars. Key Features: - Automated Bet Placement: The bot should be able to swiftly place bets on the selected platforms based on predefined criteria (Arbitrage betting). - Real-Time Odds Monitoring: It is crucial for the bot to monitor the odds continuously and place bets at the best possible odds available. - Bankroll Management: The bot needs to have a robust bankroll management system, ensuring optimal investment strategies and risk management. Skills and Experience: - Proficiency in sports betting and the specific platforms mentioned. - Strong ba...

    €554 (Avg Bid)
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    I'm in need of a skilled developer to establish a robust API connection between my E-commerce platform and host system. This is crucial for syncing key data that helps in the smooth operation and performance of my business. Key Data to Transfer: - Product Information - Inventory Levels (update real time) - Pricing Updates (update twice per week) - Shipping Costs (use the higher average provided by TopDawg) - Default markup to incoming costs (multiply incoming cost by 1.55) - Create Primary Category and then sub-categories (Primary Category Exists (TopDawg), the sub-categories are those that Top Dawg use to separate the listings. I believe there are about 12 +/- a few. - Typed tutorial on functions of API calls. - Create Master Category "NewItems" with sub-categories for ...

    €829 (Avg Bid)
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    I'm in need of a developer who can create a mobile and web maze game that will captivate players of all ages. Key Requirements: - Development for both mobile and web platforms - Maze game genre - Appeal to a broad audience (kids, teens, and adults) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- please note : * it is very sample and small game with 1 level (time from start until win is less than 4 minutes) * with 2 characters only (you will choice 1 chara...

    €1081 (Avg Bid)
    Doporučené DOM
    €1081 Průměr. nabídka
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    Explicit Filtering Phase -- 2 Ukončeno left
    OVĚŘENÉ

    Explicit Filtering Phase project as discussed in chat for phrase detection and resultant redirect.

    €433 (Avg Bid)
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