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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    37 kazi zimepatikana, bei imeletwa USD

    Actualizar stocks en wordpress por sku de productos en base a sistema de stock con un cron configurable. Se adjunta documentación.

    $41 (Avg Bid)
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    24 zabuni

    I am looking for a skilled developer who can help me fix my Auth0 authentication issue. Specifically, I am unable to login to my web application with iphone. Ideal skills and experience: - Strong experience with Auth0 authentication - Expertise in JavaScript, specifically Node.js and Express - Previous experience in fixing login issues for web applications - Familiarity with web application security measures If you meet these requirements and have the skills to help me fix my authentication issue, please reach out to me with your proposal. Thank you.

    $256 (Avg Bid)
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    I’m looking for someone to help me with a project which involves PLC, API and App development. I have 6 sauna machines, they have a keypad to turn them on/off and button to adjust temperature. I need a PLC to control this remotely which will interface with a booking system. When a customer books a session this will preheat the sauna 10 to 20 minute prior and turn off the sauna after booking end time. They book through a custom mobile app which they need to create an account first. I also need to integrate a card access system which I have an API for. I have attached a flow diagram to completely explain the work.

    $191 (Avg Bid)
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    6 zabuni

    The objective is to develop a new connector for Llama Hub that will interface with WordLift's GraphQL endpoint. This connector should allow for seamless and reliable data exchange between Llama Hub and WordLift Knowledge Graphs, promoting interoperability and data integration. The connector should be able to handle the WordLift GraphQL endpoint and execute queries to fetch data according to the provided parameters. For the initial version of the connector, we will focus on obtaining articles from WordLift's Knowledge Graph (KG). The connector shall be able to query also other classes such as schema:Products, schema:FAQpage and schema:Thing. The goal is to translate data in the KG into a docstore in Llama. See the attached requirement for more details.

    $405 (Avg Bid)
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    17 zabuni

    I am looking for an experienced Google Ad API expert who can assist me with authenticating my Google Ad API login. The ideal candidate should have expertise in OAuth2, API Key and JWT authentication methods. Requirements: - Experience in Google Ad API authentication - Strong communication skills If you are an expert in Google Ad API authentication and have the necessary skills, please apply for this project.

    $9 / hr (Avg Bid)
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    9 zabuni
    Email enrichment 6 siku left

    Hello, I am curious to know how difficult it would be to create a tool (please ask me for a reference tool in private, I basically want a 1:1 copy of it, but cannot post the link here in public). It’s basically a tool for email enrichment that uses different enrichment providers and does so by using their API. So basically in email enrichment, there are different providers and each of them offers a different tool. Using only one provider often only results in finding 50% of your clients' emails (your input is first/last name, company name). That’s why using different providers is smart to do, thus often finding up to 80% of emails. Now, the tool I want, links those providers and first uses one tool, and for those leads where an email has not been found, another tool is u...

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    Hi, I hope you read first. I need to create automate labels from my shopify orders fastest and automate. For that reason I talked with the transport company and they decided to give me the API to create labels. So I attached the API docs from the transport company named Tramaco. Please read it and remember that I only have shopify, so you must to find the best and easy way to create my labels from shopify with just one click fast and quickly. Please let me know if can you do that and send me your idea, your time and your budget for this case.

    $207 (Avg Bid)
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    23 zabuni

    I am looking for someone experienced to help me integrate a Xendit Payment Gateway to my Zoho Books account. I already have an account with Xendit, but I need assistance with using the Zoho Books API. I would like this project to be completed in 1-2 weeks. I am open to any suggestions that may help this project run smoother. Please let me know if you require any additional information. Thank you.

    $196 (Avg Bid)
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    17 zabuni
    Google Ads API Fix ASAP Imeisha left
    DHIBITISHWA

    I have an urgent need to fix an issue with the Google Ads API. We updated to V13 and having some issues with Customer Match calls to Google Ads. The developer rolled the server back, and now we have v10 which has been deprecated for months. Right now I need to make a call to the API to Google Ads to remove records from a customer list. There are 50+ lists, so not possible to do manually. I have names, ID’s etc., just need the API fixed asap. My issue isn't one of the most common issues, being neither authentication errors or a lack of data in API requests; it is something slightly different and I need it fixed ASAP. I need to be able to have the API requests return the data I need, so that I can efficiently manage my ads. Time is of the essence, so we need to get this resolv...

    $1079 (Avg Bid)
    Dharura
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    47 zabuni

    full time only, Web cam tracking 4+ years experience in Laravel and API integration, Must be able to do the follwoing tasks: a- building and customizing laravel shopping cart, b- WhatsApp API integration with the shoping cart: - A customer gets a whatsapp message with links: Accept/ Delcine/ Modify Order If a customer click the whatsapp message link>> the shopping cart gets updated without the need to visit our website, - A customer can review our menu from whatsapp, without the need to visit the website directly

    $6 / hr (Avg Bid)
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    A freelance developer to work with the development team of an Asia-based startup to plan, develop, test our platform.

    $6 / hr (Avg Bid)
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    68 zabuni

    I am looking for a skilled web developer to complete the functionality improvements on my website. I need someone experienced in this platform. The specific tasks that need to be completed include: - Implementing API functions - Adding a payment gateway for online purchases (I'll provide API here as well) - Integrate a chatbot for customer support I have 2 weeks deadline, but I am looking for someone who can work efficiently and communicate well throughout the process. If you have experience with custom-built websites and can complete these tasks, please submit your proposal.

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    I am looking for a freelancer who can connect my Woocommerce store to an API to fetch product data. The product data that I need to retrieve includes the product name, price, description, and images. I do not require any specific filtering or sorting options for the fetched data. The preferred programming language for the API connection is PHP. Ideal skills and experience: - Strong experience with Woocommerce API - Proficient in PHP programming language - Familiarity with product data retrieval and manipulation - Attention to detail to ensure accurate and complete product data is retrieved - Excellent communication skills to provide updates and progress reports.

    $64 (Avg Bid)
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    *************PLEASE ONLY BID ONCE HAVE READ AND UNDERSTOOD ATTACHED DOCUMENT************ This project is two parts. 1 is adding the option of multiple shipping on the shopify front end site and 2. is getting orders from Shopify API and creating a fulfilment dashboard. Document attached. 1. Multiple Shipping option details in document. 2. Fulfilment system that is built on PHP and MySQL to pull in information from Shopify API. We need to pull orders in from Shopify backend and then use to create the fulfilment process, this will include organising and grouping orders in order for warehouse staff to easily be able to pick and pack the orders. This system will be used daily so it needs to be secure and reliable. More details are in the document attached. The majority of the ...

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    Asesor app 4 siku left
    DHIBITISHWA

    Necesito un asesor y experto en desarrollo de aplicaciones y Api. Busco alguien para guiarme, reunirse con los desarrolladores, comprobar que todo este llegando bien y sobre todo aconsejar y mejorar cosas

    $60 (Avg Bid)
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    1. Integrar um API única para outros estados no nosso site e painel 2. Integrar o Active Campaing no site para receber os leads que consultam e caso haja um atualização no status do lead retornar para active. 3. Migração de banco de dados de um tema blog wordpress para outro tema wordpress 4. Ajustes no front da tela final de cotação de seguro via API TEX TELEPORT

    $2153 (Avg Bid)
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    I have the story and I have the template but I don’t know how to put in a perfect executive deck. I work for API Security and looking in to hire someone contractor or full time based on their expertise. I want to come mostly what target state is, the POC use cases and comparison with the current state and gaps.

    $130 (Avg Bid)
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    12 zabuni
    Develop an API 3 siku left
    DHIBITISHWA

    Need an API made that can act as a reverse search engine using images from Google to show similar results against pictures taken on an app.

    $64 (Avg Bid)
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    15 zabuni
    Flutter app - Websockets 3 siku left
    DHIBITISHWA

    Good day! We need a Flutter Developer to create an app for us. We have the wireframes ready and below are screens list. We will share wireframes and API endpoints once we finalize the bidder. Please bid EXACT amount and mention the EXACT time that you will need to complete the project. If you bid low and then change your bid, we will reject you. All APIs will be shared with you once you're selected. App Permissions needed - Foreground and Background Location - Bluetooth - Internet SCREENS / FEATURES ----------------------------- (1) Phone number + OTP screen -- When logging in, device details need to be sent as part of request - Save login user details in local storage (HIVE) (2) Home screen -- Home screen will contain a GPS map + some statistics. These need to be shown in real...

    $850 (Avg Bid)
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    21 zabuni

    Busco un profesional con experiencia comprobable en el uso de plataformas de gestión de contactos de WhatsApp. Necesito a alguien que pueda configurar la plataforma para recibir los números telefónicos y nombres de mis clientes, los cuales se envían a través de una API desde la plataforma de pago con la que trabajo. Responsabilidades clave: - Configurar y optimizar la plataforma de gestión de contactos de WhatsApp para recibir y almacenar los números telefónicos y nombres de mis clientes. - Explicar de manera clara y detallada cómo utilizar la plataforma para que yo pueda comprender y manejar su funcionamiento de forma autónoma. - Automatizar el envío de mensajes promocionales a través de la plataforma,...

    $300 (Avg Bid)
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    15 zabuni
    Teamwork.com api 3 siku left

    We make extensive use of (Projects) and wish to explore API integration from and to From Syspro OBDC files into projects (desk) custom fields and from Teamwork Projects projects custom fields to PowerBI/Excel and back into Syspro.

    $498 (Avg Bid)
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    Estamos buscando un programador con sólidos conocimientos en servidores AWS EC2 para unirse a nuestro equipo y asumir el control de una API ya programada, con el objetivo de analizar en un primera fase que hay programado y como se ha hecho, ya que tan sólo disponemos de una breve documentación con las querys a las que responde. La persona elegida, será además el responsable de mantener y optimizar la infraestructura de servidores en la nube, garantizando un rendimiento óptimo y una alta disponibilidad para nuestra API. Responsabilidades: - Administrar y configurar servidores AWS EC2 para garantizar el funcionamiento fluido y eficiente de nuestra API. - Supervisar y optimizar el rendimiento de los servidores, asegurando la escalabilidad y la capaci...

    $32 / hr (Avg Bid)
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    7 zabuni

    Estamos buscando un programador con experiencia en la integración de múltiples plataformas para unirse a nuestro equipo. Específicamente, buscamos a alguien con experiencia en las siguientes integraciones: - Sage 50 <-> WooCommerce - WooCommerce <-> Mirakl - WooCommerce <-> Amazon FBA & FBM. Nuestro objetivo es desarrollar integraciones personalizadas que permitan mantener una sincronización constante de stocks de productos, pedidos y datos de clientes entre estas plataformas, de forma que el CRM Sage 50 esté siempre actualizado con los pedidos tanto de WooCommerce directos como de Amazon y de los distintos marketplaces con los que se integra Mirakl. Responsabilidades: - Desarrollar e implementar integraciones personalizadas para...

    $25 / hr (Avg Bid)
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    10 zabuni

    the broker has an API, i will provide keys changeable settings: high low: 60 (minutes. alert when new high/low of last X minutes. up to 12 hours/720m) rsi period: 7 (false = disabled) rsi levels: 30, 70 alert times: 1-20, 31-50 ((mm) hourly alert times. false = disabled. if you prefer any other way to list them thats ok) breaks: 5 (after alert X minutes no more alerts for particular asset) candle: 60 (seconds) candle data: openclose or highlow (if openclose, alerts focus only on open&close of candles, ignoring high&low. i’m guessing MarketDataSubscribe() returns high low open close, if not let me know) chart length: 7 (hours. when running script, do you get immediately data of past X hours or do you have to wait 5 hours to get 5 hours chart etc?) assets: 1, 100, etc (chart...

    $173 (Avg Bid)
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    27 zabuni
    Aliexpress API 2 siku left

    I am looking for a freelancer who can help me with an Aliexpress API project. Specifically, I need to extract product information and listings from Aliexpress using PHP. . The ideal candidate should have experience working with Aliexpress APIs and should be proficient in PHP. Additionally, I need the API to be integrated into an existing system. The freelancer should be able to work with my team to seamlessly integrate the API into our existing system. If you are interested in this project, please provide examples of similar projects you have worked on in the past.

    $33 / hr (Avg Bid)
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    51 zabuni
    API Market Researcher 2 siku left
    DHIBITISHWA

    Company: NFTTools About Us: NFTTools is a dynamic tech start-up with a unique focus on crafting tools to access hard-to-obtain data from various websites with limited or non-existent APIs. Our current product offerings revolve around APIs for notable NFT marketplaces, including Blur, OpenSea, LooksRare, and X2Y2. We are now looking to expand our scope beyond NFTs and venture into DEXs and other promising sectors. Job Description: We are on the hunt for an API Market Researcher who is both inquisitive and driven. This role calls for someone who is fascinated by the digital world, has an understanding of APIs, and is eager to uncover new opportunities for our business. Responsibilities: Conducting comprehensive research into websites that have a high user demand but offer limited data ...

    $5 / hr (Avg Bid)
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    Meal planner UI React 2 siku left
    DHIBITISHWA

    I am looking for a skilled React developer to create a meal planner responsive web application using latest reactjs. Only frontend is required, backend API and contract will be shared when it comes to development. High level project requirements include: 1. Screen to calculate daily calorie intake by using age, gender, height, weight etc -> call backend and display result 2. Choose calorie and input meal preference, like avoid certain food items, cuisine etc 3. Display weekly meal plan 4. Couple of html Email templates. 5. A home page for the website, logo, images etc If you have experience with similar projects and are available for this project, please submit your proposal.

    $373 (Avg Bid)
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    Hi, i am looking for some one who can make tool like bsccheck . eu let me know if you can do it, thanks

    $121 (Avg Bid)
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    5 zabuni

    Hello, I am looking for a programmer for regular collaboration, who can write an upload/download tool for usenet in the first step. Please read completely before placing a bid ! Please bid only if you also plan to respond... Please make realistic offers and no fake offers where the price multiplies afterwards. Please keep in mind that changes can still be made during the testing phase ! Thank you! My Requirements are: -Combine the settings of the programs mentioned (ngPost, Nyuu, NewsUP, SabNZBd) -download functions like the program "sabNZBd" -for Windows (With a proper installation routine and as an .exe file!!) -Python -NNTP (Network News Transfer Protocol) -modern GUI and a nice logo :) -source code, commenting on the source code properly ! -expandable ! -API usage -work...

    $274 (Avg Bid)
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    9 zabuni

    Hello, i´m looking for a programmer to write an rename tool to rename Animes, Series and Movies. Please read completely before placing a bid ! Please bid only if you also plan to respond... Please make realistic offers and no fake offers where the price multiplies afterwards. Please keep in mind that changes can still be made during the testing phase ! My Requirements are: -rebuilt app like and (MetaX) -easy license system, username/email and password or a reg file? -for Windows (With a proper installation routine and as an .exe file!!) -python -modern GUI and (CLI) Command Line usage, powerful and full-featured cmdline interface and scripting interface for any kind of automation -source code !! (properly documented) -Naming Synthax: -expandable -API usage -option for (hidden) ...

    $194 (Avg Bid)
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    13 zabuni

    I am looking for someone to fix my Google Merchant account for product listing via API. I have already set up my Google Merchant Center account, but I am experiencing a product disapproval issue with my product listings. I need someone who is experienced in fixing product disapproval issues to help me resolve this problem. The ideal candidate should have the following skills and experience: - Proficient in using the Google Merchant Center API - Experience in fixing product disapproval issues - Knowledge of Google policies and guidelines for product listings - Experience in optimizing product data for better performance - Attention to detail and ability to troubleshoot issues quickly If you have the required skills and experience, please bid on this project and let's get started.

    $33 (Avg Bid)
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    2 zabuni
    Vercel. Subabase. -- 3 18 masaa left
    DHIBITISHWA

    project we have is to deploy the following AI examples via Vercel: Let me know if you have capacity. We will also supply an API key to use. For file QA we have a pinecone account or can use supabase if easier.

    $167 (Avg Bid)
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    11 zabuni

    I am looking for a skilled Native Android developer or freelancer who can assist me with the following query and help launch my app on the Google Play Store. I am interested in purchasing the source code for the ChatGPT AI app from and would like to reskin and launch it on the Google Play Store. Here is the link to the app: [ConversAI ChatGPT AI Native Android Chat App](). The app features are as follows: - Built using 100% Kotlin - Native Android development - Utilizes Jetpack Compose - Supports Markdown formatting - Includes chat history functionality - Provides full access to the source code - Offers comprehensive documentation - Includes in-app purchase option to unlock the PRO version - Integrates Admob ads for monetization - Allows users to watch rewarded ads to earn additional m...

    $115 (Avg Bid)
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    12 zabuni
    Mobile Math App 3 siku left
    DHIBITISHWA

    We are looking for an experienced and skilled AI developer to create a fully functional math app that uses Chat GPTs API key. The app will be designed to cater to the needs of college and high school students who want to solve math problems, learn math, or do busy work with convenience, speed, and results. The ideal candidate will have experience in developing AI-powered math apps and possess expertise in understanding equations, drawing graphs, and processing imaging. The app should allow users to upload pictures of problems, and the app/website/chrome extension should be able to read and process the images. In addition like Chat GPT it should be able to answer in a natural way if the user is looking for steps, or help on a problem. We have already designed the logo, the colors, and...

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    Sports API Intergration 11 siku left
    DHIBITISHWA

    I have the front end,I need my API Intergrated and I need to see previous work of the individual for this job...b/c all I've been getting is promises. I need this done asap. The site should look like It should have all the functions and there are 22 sports Thank you

    $3183 (Avg Bid)
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    86 zabuni
    Explicit Filtering Phase -- 2 Imeisha left
    DHIBITISHWA

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

    $470 (Avg Bid)
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    29 zabuni

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