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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    I'm looking for an expert developer who's proficient with AWS services, particularly EventBridge, and has experience integrating with Shopify webhooks. Key requirements: - Setting up and pushing code into fresh AWS servers - Creating and configuring AWS EventBridge to handle large volume webhook events from Shopify - Routing these events to either SQS or Lambda Your primary task will be to ensure that Shopify webhooks are efficiently processed through AWS EventBridge. Ideal skills and experience for this job: - Proficiency in AWS services, especially EventBridge - Experience with Shopify webhooks - Knowledge of server setup and configuration - Prior experience with middleware systems and large volume event handling - shopify graphql and restful api Please note that while the ...

    €193 (Avg Bid)
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    I'm looking for a competent developer to create a Multi Vendor Ecommerce Auction Marketplace on Shopify. The project involves integrating the Shopify platform with a 3rd party platform's API, specifically GAP (documetation to be provided). Key Project Details: - Development of a Multi Vendor Ecommerce platform on Shopify - Implementation of Auction functionality - Ensuring seamless integration with a 3rd party platform (ATG) through its API - Strong reporting features to easily export to Xero - Built Modular - App with push notifications Ideal Skills and Experience: - Previous experience in developing and launching Ecommerce Auction Marketplaces, preferably on Shopify - Profound understanding and experience with Shopify platform and API integrations - Proven track record of int...

    €4776 (Avg Bid)
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    I'm looking for a skilled developer to help us in creating a seamless connection between Wufoo (form builder) and our CRM Hirehop, using their respective APIs. Ideal Skills and Experience: - Proficient in working with APIs - Solid experience in integrations between Wufoo and CRMs - Skilled in real-time data synchronization - Familiar with creating triggers for data transfer Key Deliverables: - Set up a real-time synchronization process between Wufoo and Hirehop - Ensure that only 'Order Details' data is transferred - Create a trigger for data transfer upon form submission on Wufoo Prior to responding please take a look at the HireHop API documentation here:

    €210 (Avg Bid)
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    40 ponudb

    I'm seeking an experienced Flutter developer to assist in the creation of an Android application. Key Points: - The main purpose of the app is not yet defined. We are open to ideas and suggestions. - We don't have a specific design in mind, so I'll need the developer to lead the design process. - The primary platform for this app is Android. Requirements: - Proficiency in Flutter and Dart - Experience in designing mobile applications - Strong problem-solving skills and creativity - Ability to work independently and think critically

    €56 / hr (Avg Bid)
    €56 / hr Povprečna ponudba
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    Hello, I need a tool that use API Riot and display all information of active game with require informations: 1. The next elemental dragon 2. All the champion 3. The time of the game 4. Champion's name Please show me an example of display these information, I will buy it, thanks!

    €171 (Avg Bid)
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    I'm looking for a Laravel expert to integrate Google Sheets into my system. Specifically, I want to connect it with a form on my site for seamless data handling. I have an html form php file on my server (built in laravel). I would like a passcode (no username) added to the form that captures the user connected to the passcode when the form is submitted. I would like the data sent to Google Sheets when a user submits the form. The Google sheet is complex. I would like the form data sent to 1 of 13 sheets. It should search for the sheet name, date, and user (from the html form) to find the correct sheet and row to insert the data from 5 fields.

    €21 (Avg Bid)
    €21 Povprečna ponudba
    8 ponudb

    I'm looking for an expert developer who's proficient with AWS services, particularly EventBridge, and has experience integrating with Shopify webhooks. Key requirements: - Setting up and pushing code into fresh AWS servers - Creating and configuring AWS EventBridge to handle large volume webhook events from Shopify - Routing these events to either SQS or Lambda Your primary task will be to ensure that Shopify webhooks are efficiently processed through AWS EventBridge. Ideal skills and experience for this job: - Proficiency in AWS services, especially EventBridge - Experience with Shopify webhooks - Knowledge of server setup and configuration - Prior experience with middleware systems and large volume event handling - shopify graphql and restful api Please note that while the ...

    €240 (Avg Bid)
    €240 Povprečna ponudba
    41 ponudb

    I need a CRM solution designed around the latest version of Odoo, Odoo 13 or Zoho. I'm looking for developers with specific skills and experience customizing Odoo CRM or Zoho Creator (CRM). Key features I need to integrate: - Contact management - Management of the Contracted Services pipeline - Customer support tickets - Agenda management with confirmations via automation via email and Whatsapp - Patient Medical Records - Integration and Management of WhatsApp messages - Built-in video calling appointments Additionally, the project requires specific design and branding elements that will be explained in more detail during the selection process. An eye for detail and a creative mindset are required to meet the specifics of the project. Thanks.

    €271 (Avg Bid)
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    I urgently need an expert in C# to integrate my Point of Sale/Enterprise Resource Planning (POS/ERP) system with QuickBooks Online. The goal is seamless syncing of different modules, including, but not limited to: - Customer Information - Inventory Status - Purchase History - Sales Records - Products, Categories, etc... Familiarity with QuickBooks Online APIs and proficiency in C# .net Core is imperative for this role. Past experience with similar projects will be highly valued. The timeline is urgent; I need this integration done ASAP. we already have a code we made integration with SAP Business One, we can share this code to have the fastest development, and also we have the code of a previous developer who made of Quickbooks so it would help to see how to integrate

    €165 (Avg Bid)
    €165 Povprečna ponudba
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    I am looking for a professional Laravel developer who can help in creating a Laravel dashboard. Your experience and skills in working with Laravel will be key in accomplishing this project. This job includes: - Developing a Laravel application for a dashboard - Incorporating specific features into the dashboard, such as: * User Management * Data Visualization * Report Generation * External API Mapping to frontend Your Profile: - Expert Laravel Developer - Extensive experience in creating unique, efficient dashboards - Proficient in user-management systems - Strong background in data visualization - Exemplary skills in report creation and generation Excellent project understanding and creativity are essential in bringing my visions to reality. Looking forward to working wit...

    €315 (Avg Bid)
    €315 Povprečna ponudba
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    Hola! Como están? Somos un grupo de emprendedores que buscamos un front y back, para una plataforma de casino online que tenga conocimiento de las API necesarias para el proyecto, hacer la maquetacion y el diseño de la pagina, con paneles para que pueda haber administradores. Estos administradores proveeran los creditos que se utilicen en el casino y el CEO (unicamente los lideres) podrán crear estos creditos. Sin sistema de pagos, ya que el sistema de pagos iria por fuera de la pagina. Idealmente nos gustaría encontrar a alguien que tenga experiencia integrando MercadoPago. --- Hello! How are you? We are a group of entrepreneurs who are looking for a front and back end for an online casino platform that has knowledge of the APIs necessary for the proj...

    €1436 (Avg Bid)
    Pogodba o nerazkritju informacij
    €1436 Povprečna ponudba
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    API for UE4 and export to V.R. 5 dni left
    VERIFICIRAN/A

    Hello! I have a small video game project (art installation in the form of a video game) in Unreal Engine 4.27 and I need your help. I need you to: 1) make an API that collects "hate speech" from social media (one version for English, one for Serbian) and make it appear periodically in my game level 2) make it so that a robot voice reads that text (one version for English, one for Serbian) 3) export it for a virtual reality headset (making it app-store ready) I already made the environment , UI design and particle effects. Please let me know how much time you will need for this project.

    €411 (Avg Bid)
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    I need a custom WHMCS module that will take my DNS management to the next level. This module should: - Offer comprehensive DNS record management capabilities - Provide advanced DNS zone management options In terms of the user interface, I'm looking for a blend of simplicity and modernity. So, the UI should be: - Simple and intuitive for users to easily navigate and use - Modern and sleek to align with the current design trends The key part of this project is integrating with a custom DNS service. This means the module will need to be: - Compatible with the custom DNS service I use (API) is available - Highly functional for smooth integration and operation Ideal candidates should have experience with: - WHMCS module development - DNS management systems - Custom UI/UX design - ...

    €33 (Avg Bid)
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    11 ponudb

    I'm looking for an experienced developer to help with real-time text data scraping via API and management using BeautifulSoup. This project is primarily focused on retrieving text data and storing it in a database. Key Responsibilities: - Implement an API scraper to continuously retrieve text data in real-time - Utilize BeautifulSoup for data extraction and management - Develop a robust database to store all the scraped text data The ideal candidate should have: - Proficiency in Python programming language - Strong experience with API scraping and BeautifulSoup - Previous work involving real-time data scraping - A good understanding of database management It is important that the data scraping runs seamlessly and accurately in real-time. Prior experience with similar projects wil...

    €4 / hr (Avg Bid)
    €4 / hr Povprečna ponudba
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    I have a web application that runs on PHP and I'm looking to integrate it with APIs provided by multiple suppliers. These suppliers will send us three specific types of data through their APIs - customer information, product information, and order information. Key Requirements: - Connect the webapp with Supplier A, Supplier B, and Supplier C APIs. - Extract and process customer information, product information, and order information sent by these suppliers. - Display this data on the webpages of the application. - Store this data efficiently in a database. Skills and Experience: - Proficient in PHP and API integration. - Strong understanding of database management. - Experience in handling customer, product, and order data. - Detail-oriented to ensure accurate data extraction and di...

    €77 (Avg Bid)
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    I need a cross-platform native mobile application for iOS and Android that will primarily be used for fund transfer, recharge, bill payment, tax accounts, and other utility services as per attachment. The app should have a user-friendly interface and must be fast, secure and reliable. Key requirements: - Develop a cross-platform native mobile application for iOS and Android. - The application should be able to facilitate fund transfers, recharge, bill payments, manage tax accounts, and provide utility services. - Ensure that the app is user-friendly, fast, secure, and reliable. I need this project completed ASAP. Please provide your portfolio and relevant experience when you submit your bid.

    €1231 (Avg Bid)
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    React Coder for API Integration 4 dni left
    VERIFICIRAN/A

    we are looking for react developer with experience in APIs to check api document and implement validations and fix the API posting . 90% of the code is already implemented , only validations and posting part needs to be fixed . this willl lead to more projects in future Key Requirements: - Proficiency in React development - Experience with API integration in React - Ability to determine and implement the most suitable React APIs for the project's needs

    €125 (Avg Bid)
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    I'm seeking a skilled developer to integrate the stock of my WooCommerce website with a Warehouse Management System via API. Key Requirements: - Integration: Develop a seamless connection between my WooCommerce store and a Warehouse Management System. - Frequency: Implement stock level updates from the API to WooCommerce once a day. Ideal Skills & Experience: - Proficient in WooCommerce and WordPress API - Experience with integrating external systems, particularly Warehouse Management Systems - Strong understanding of real-time data updates - Ability to write efficient, secure and scalable code - Good communication skills to ensure successful integration and project completion I have a few files and documents from the warehouse which I can share with you. Many thanks!

    €170 (Avg Bid)
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    In the quest to further enhance our customer experience, we are looking for a talented freelancer to help us develop an efficient customer support chatbot for our WhatsApp Business account. The successful candidate should also help us in the verification process of this account. Key tasks include: - Developing a chatbot tailored to offer customer support - Assisting in verifying WhatsApp Business account An Ideal freelancer should: - Have the acumen to write detailed and comprehensive project proposals - Have demonstrable experience in chatbot development, particularly on WhatsApp Business platform - Understand the dynamics of WhatsApp Business account verification - Be willing to provide support beyond project completion This is an opportunity to add a reputable brand to your portfoli...

    €10 / hr (Avg Bid)
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    I require a seasoned API developer to create a new API specifically for my Android application. The API should not only facilitate user authentication but also share relevant product information. Key Functions: - User Authentication: Implement functions to register new users, log in existing users and reset forgotten passwords. - Product Information: Provide product data access including descriptions, prices, and availabilities. Ideal Skills and Experience: - Experience creating APIs for Android applications. - Proficiency in user authentication processes. - Familiarity with handling product data through APIs. - Understanding of secure coding practices. By prioritizing data and user security, the API should also be designed to scale and accommodate potential future requirements.

    €93 (Avg Bid)
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    Immobiliendaten Schweiz mit KI 2 dni left
    VERIFICIRAN/A

    Ich suche einen Experten der sich auskennt mit Immobiliendaten für die Schweiz...Es soll ein System historische und live meldungen von inseraten oder sonstige informationen haben wie auch Kartenansichten für Grundstückgrösse Aussicht und sonstiges haben... Es soll mit einem KI Chat auch dazu sein weitere anweisungen können wir zusammen anschauen.. mit Bonus wenn gute Arbeit

    €260 (Avg Bid)
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    I need a skilled developer who is proficient in working with APIs and handling CORS issues. The task is to troubleshoot and rectify the current issues with my trading bot, which is supposed to fetch data from 's API but is not performing as expected. Requirements: - Expertise in API connections - Familiarity with trading bot logic and operation - Ability to work with the API - Understanding of CORS and experience resolving issues related to it Specifically, the bot should be able to fetch: - Account balance - Betting history - Current odds The ideal candidate should have a proven track record in solving similar issues and be able to deliver timely and effective solutions.

    €89 (Avg Bid)
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    I'm looking for an experienced Unity Developer who can help me create a fully animated character integrated with ChatGPT. This character's primary goal will be to deliver educational content to Windows users. Key Requirements: - The character should be fully animated and engaging, with high-quality visual design and smooth motion. - It should be able to read the chatGPT response - Ensure smooth and realistic animations and lip-syncing for the meta-human during interactions. - An example role is meta human tutor You need to provide the unity project files and created API chatGPT, and Documentation

    €18 / hr (Avg Bid)
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    I'm in need of a skilled developer with experience in integrating into a WordPress website. The main goal of this project is to make use of its advanced image editing features on my existing site. The key tasks for this project include: - Installation of plugin to my WordPress site, as it has not been done yet. - Integration of the API to ensure full functionality. In this integration, I want to focus on the image enhancement and smart cropping features.

    €113 (Avg Bid)
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    Kodi XBMC Addon Development 1 dan left
    VERIFICIRAN/A

    I'm seeking a skilled developer who can Develop, a Kodi XBMC addon that features streaming content and a customizable user interface. - Experience with Kodi XBMC is required. - The addon should be capable of getting subtitles from subdl. - Create a user interface that is smooth, easy to navigate, and harmonizes with the Kodi XBMC environment. Despite no particular design preference, the interface ought to be comfortable to use and user-friendly. The ideal candidate should be experienced in Kodi XBMC. using API from subdl with the following ().

    €15 / hr (Avg Bid)
    Izpostavljeno
    €15 / hr Povprečna ponudba
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    I need an expert developer to integrate a custom GPT-4 model into my Telegram bot. The bot will be catering to Russian language users. Key requirements: - Experience in using GPT models, particularly GPT-4 - Fluent in Russian and English to ensure successful implementation - Proven proficiency in developing Telegram bots - Knowledge of interpreter API for a smooth integration of the GPT-4 model to the Telegram bot. This integration is essential in enhancing communication and interaction with the bot. Your attention to detail and adherence to the timeline will be crucial for this project's success.

    €247 (Avg Bid)
    €247 Povprečna ponudba
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    Quick React Native Task with API 1 dan left
    VERIFICIRAN/A

    I'm looking for a skilled React Native developer to help me with a quick project. The task involves designing and implementing a single API. Unfortunately, the specific task and API type are not defined in the project description. Your main responsibility will be understanding and implementing the API effectively. Therefore, the ideal candidate should have experience in designing and developing APIs, especially if they are RESTful or GraphQL. While the exact functionality of the API is not specified, the following are common functionalities that you might need to consider for implementation: - Create, read, update, and delete (CRUD) operations - Authentication and authorization - Data validation and error handling Please note that this project is time sensitive and thus requires...

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    I need an expert in CURL scripting who can help me retrieve specific account information from the Schwab and ThinkOrSwim APIs. The project is on an ASAP timeline and involves accessing the API endpoints for Account Information and Transaction History. The project involves writing cURL scripts (callable from a Windows command line) that: Retrieve a Refresh Token (every 7 days) Retrieve an Access Token (every 30 minutes) Retrieve account positions and balances Retrieve OHLC and current price information on listed stocks and futures I need someone who already has access to a Schwab account for testing purposes, since I am unable to shared my personal credentials. This will be a very simple job for anyone who has ever used the Schwab API.

    €124 (Avg Bid)
    €124 Povprečna ponudba
    22 ponudb
    A/B Test with VWO.com 7 ur left
    VERIFICIRAN/A

    I'm looking for a skilled professional to help me set up a 50% to 50% split test for Domain 1 and Domain 2 using VWO.com. The primary conversion goal for this test is purchases. Key requirements for the project include: - Ensuring a 50% split between the two domains throughout the test - Implementing the split test through - Focusing on measuring the success of the purchase conversion through the conversion rate The ideal candidate for this project will have: - Proficiency in setting up split tests using - Experience with conversion rate optimization, particularly around purchase goals - A strong understanding of web analytics and tracking Your task will be to ensure a fair and accurate split test between the two domains, with a specific focus on driving and measuring purchase c...

    €22 (Avg Bid)
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    I need a developer adept at integrating ZohoBooks with Power BI using REST API. The ideal candidate should possess these skills and deliverables: • Proficiency in ZohoBooks REST API and Power BI • Experience with complete, real-time data synchronization • Expertise in creating customizable dashboards on Power BI • Ability to visualize all types of data from ZohoBooks, including financial reports, customer data, and sales data. This should also cover timesheets, invoices, and profit/loss analysis • Capable of executing sales and financial analysis using Power BI The goal is to seamlessly analyze and monitor our data from ZohoBooks in Power BI. Developers with prior experience in similar projects will be preferred.

    €28 (Avg Bid)
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    Explicit Filtering Phase -- 2 Končano left
    VERIFICIRAN/A

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

    €433 (Avg Bid)
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