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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    27 trabalhos encontrados, preços em USD

    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...

    $6 / hr (Avg Bid)
    $6 / hr Média
    17 ofertas

    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...

    $91 (Avg Bid)
    $91 Média
    28 ofertas
    LLM and LangChain Expert Needed 6 dias left
    VERIFICADO

    I am seeking an expert well-versed in LLM and LangChain technologies. I an using a script in my prompt in the Playground which is working fine, but when I call it via APIs, it is giving wrong errors. I want someone with expertise in this to help us fix it. Currently using, Claude 3 Haiku (because of speed) - open to other models

    $16 (Avg Bid)
    $16 Média
    4 ofertas

    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.

    $1169 (Avg Bid)
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    24 ofertas
    React Coder for API Integration 6 dias left
    VERIFICADO

    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

    $133 (Avg Bid)
    $133 Média
    93 ofertas

    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!

    $185 (Avg Bid)
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    142 ofertas

    Hello All, We are an established IT services provider with 13 years of experience and a team of 25 in-house developers. Currently, we are looking to hire some freelancers because we are at full capacity and do not have sufficient resources to handle some of our work. We are seeking a long-term partnership and are willing to provide 20-30 hours of work per week. We welcome both experienced freelancers and those new to this platform who have significant prior experience, such as working in a company before starting their freelance career. This job post is open to all qualified candidates. Now, let's discuss the job requirements, which are urgently needed: We require an expert Laravel Developer who is well-versed in third-party APIs. The candidate must have experience working on inco...

    $5 - $8 / hr
    Secreto
    $5 - $8 / hr
    74 ofertas

    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...

    $11 / hr (Avg Bid)
    $11 / hr Média
    6 ofertas

    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.

    $100 (Avg Bid)
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    11 ofertas
    Immobiliendaten Schweiz mit KI 3 dias left
    VERIFICADO

    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

    $282 (Avg Bid)
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    13 ofertas

    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.

    $103 (Avg Bid)
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    13 ofertas

    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

    $20 / hr (Avg Bid)
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    41 ofertas

    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.

    $123 (Avg Bid)
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    73 ofertas
    Kodi XBMC Addon Development 2 dias left
    VERIFICADO

    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 ().

    $16 / hr (Avg Bid)
    Destacado
    $16 / hr Média
    14 ofertas

    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.

    $268 (Avg Bid)
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    23 ofertas
    Quick React Native Task with API 2 dias left
    VERIFICADO

    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...

    $25 (Avg Bid)
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    15 ofertas
    A/B Test with VWO.com 1 dia left
    VERIFICADO

    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...

    $24 (Avg Bid)
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    12 ofertas

    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.

    $135 (Avg Bid)
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    22 ofertas

    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.

    $30 (Avg Bid)
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    16 ofertas
    Automate Daily API Data to HTML 1 dia left
    VERIFICADO

    I'm in need of a professional who can help me create an automated workflow that will take data from an external API and present it in HTML format. The workflow should refresh the HTML output on a daily basis. Key Responsibilities: - Establish an automatic system to retrieve data from an external API. - Translate the data in JSON format to an HTML layout. - Implement a daily update function for the HTML output. - Ensure the workflow is resilient and minimizes the risk of data loss. Expectations: - You should be skilled in working with APIs and transforming JSON data. - Strong proficiency in HTML and web development. - Experience with automation and scheduling tools. - A keen eye for detail and the ability to follow provided styling guidelines. Please note: - I will provide specific ...

    $205 (Avg Bid)
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    70 ofertas

    NOTE : this is for futures .. max budget is $300 *** please submit, only if you have worked on BOT projects for crypto exchange*** I'm seeking a skilled developer to create an automated trading system that can execute trades on the MEXC platform. Key Requirements: - Development of automated trading strategy: I have a specific trading strategy in mind that I would like to automate. You will need to work with me to understand and implement this strategy in the trading bot. - Automatic execution of trades: The system should be able to automatically execute trades based on predefined criteria. This will require seamless integration with the MEXC platform. Skills and Experience Required: - Strong knowledge of algorithmic trading and cryptocurrency markets - Proficiency in building aut...

    $316 (Avg Bid)
    $316 Média
    7 ofertas

    **Only looking for Sharepoint Design - Please do not respond with custom web development solutions** I'm looking for a freelancer proficient in Power Automate and Sharepoint Design to assist me with Data Synchronisation with Xero Practice Manager (XPM): You will need to setup and synchronize SharePoint List with XPM API (2-way) I need you to setup lists and synchronize the following data: - Clients & Contacts - - Staff - - Jobs & Tasks - - Time - - 1 x Document Set for Clients, and 1 x Document Set for Jobs that are sync'd with the Clients and Jobs lists (e.g. New Client = Setup New Document Set) The lists above are linked so I want to columns to link to the appropriate list (e.g. Clients to their respective jobs). I won't be able to share the API key with y...

    $589 (Avg Bid)
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    37 ofertas

    I'm seeking an Android and iOS developer to create a sports-centric social networking app that exhibits cross-platform functionality. The application should incorporate key features such as: Register user, events, leagues, live scores, location based data display. Messaging: Send message via SMS, Email, Whatsapp. Ideal candidates should exhibit proficiency with both Android and iOS platforms, have experience in developing interactive social networking apps, and a fundamental understanding of sports is a plus. Applicants should demonstrate a knack for integrating messaging modules, user-profile systems, and creating dynamic news feeds in past projects.

    $807 (Avg Bid)
    $807 Média
    48 ofertas

    I need a skilled developer to create a bespoke cryptocurrency chart race video generator tool for personal use. This tool will utilise APIs from platforms like Magic Eden to fetch real-time data on token price movements. It will allow me to select specific time frames (daily, weekly, monthly) and generate a dynamic chart race video displaying the performance of the top ten cryptocurrency tokens, from a specific chain. Key Features to Implement: Data Source Integration: Integrate with cryptocurrency exchange APIs (e.g., Magic Eden) to fetch real-time data on token price movements. Date and Time Selection: I should be able to specify exact start and end times for data fetching and video generation. Chart Race Creation: Automatically generate a chart race video that show...

    $1445 (Avg Bid)
    $1445 Média
    59 ofertas

    I'm looking to integrate a real-time chat feature between our CRM (Bitrix24) and Omnichannel (Huggy) platforms. Key details include: - The integration must be comprehensive, i.e., there should be no missing features or functionalities on either platform during or after integration. - Real-time synchronization is crucial. This means that chat data should be immediately accessible and updated in both systems without delay. Ideal candidates for this job should have prior experience in real-time chat integration, especially with CRM and Omnichannel platforms. They should be able to deliver quality work that guarantees seamless communication without any glitches or delays in the chat feature. I appreciate developers who pay attention to details, as every aspect of this project is essenti...

    $519 (Avg Bid)
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    43 ofertas
    Google Maps API Integration 3 horas left
    VERIFICADO

    I'm in need of a skilled developer who can integrate Google Map API , I want to display the locations on the google map. We can push the location name through APIs and those locations should be populated on the Google map Requirements: - Display Locations: The developer should help in displaying locations on the map using an external API. - Generating Directions: The app should also be able to provide accurate directions to users based on the selected locations. - Custom Marker Designs: I'm looking to have a unique set of markers on the map. The developer should help in implementing this feature. Ideal Skills: - Proficiency in Google Map API: The ideal candidate should have a strong understanding of the Google Map API and its various functionalities. - Experience with Cu...

    $130 (Avg Bid)
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    28 ofertas
    Explicit Filtering Phase -- 2 Encerrado left
    VERIFICADO

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

    $470 (Avg Bid)
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    29 ofertas

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