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!

Od 181,159 recenzí, klienti hodnotí našeho pracovníka API Developers 4.9 z 5 hvězd.
Zaměstnat API Developers

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!

Od 181,159 recenzí, klienti hodnotí našeho pracovníka API Developers 4.9 z 5 hvězd.
Zaměstnat API Developers

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    35 Nalezené pracovní možnosti

    I'm seeking a skilled developer experienced with PrimeNG and Angular 18 LTS to deliver a ready-made website with a few static pages in English and another language. (The additional languages are loaded from an external file that you provide.). ETA : Saturday 18th Jan. This is a rapid development. Step for the candidate: - Answer the questionnaire provided before contacting me. - Sliced milestones by modules Requirements: - Design the modules as described on the document (the detailed will be given after considering the answers to the questionnaire). - Include translation support as external (not hardcoded) for both English and Arabic (Right to Left layout) with a language switch button. The Arabic can be automatically generated from english. - Application is been onpremise. - Im...

    €140 Average bid
    €140 Průměr. nabídka
    38 nabídky
    n8n and vapi AI Workflow Setup
    6 dní left
    Ověřený

    I'm looking to develop a basic workflow with n8n and vapi AI. The primary purpose of this workflow is to automate customer interactions via a voice AI. Key Components: 1) Trigger - The workflow will be initiated by a call from a customer. 2) vapi AI - This will handle the call. 3) Google Sheets - All transcriptions from the call will be stored here. 4) Various Databases - The workflow will connect to different databases, including those for contracts and customer data. 5) Data Recording - vapi AI will record data for future interactions. 6) Calendly Integration - The workflow will also incorporate data from Calendly. Critical Integrations: - The most crucial integration for this workflow is the database for contracts and customer data. Please note, the type of databases for contrac...

    €121 Average bid
    €121 Průměr. nabídka
    7 nabídky

    I'm looking for an experienced software developer or data analyst who can help me review the solar Google API Calculator.

    €22 Average bid
    €22 Průměr. nabídka
    13 nabídky

    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

    €7 / hr Average bid
    €7 / hr Průměr. nabídka
    6 nabídky

    I'm facing a problem with my Google Cloud Platform (GCP) Cloud Function. The function isn't executing when triggered by an HTTP request. I need an experienced GCP developer to help diagnose and resolve this issue.

    €21 Average bid
    €21 Průměr. nabídka
    7 nabídky

    We are looking for a professional who can assist with the maintenance of our Terra platform including integration of both real-time and historical data through the Terra APIs. This project primarily focuses on data integration from various sources including databases, APIs, and wearables. Key Requirements: - Experience with data integration and APIs - Familiarity with handling both real-time and historical data - Proficiency in working with databases and wearables - Excellent problem-solving skills and attention to detail Ideal Skills and Experience: - Previous projects involving Terra APIs or similar - Strong programming background - Expertise in data analytics and visualization - Ability to work under tight deadlines and deliver quality results

    €36 / hr Average bid
    €36 / hr Průměr. nabídka
    65 nabídky

    Projektbeschreibung: Schnittstelle zwischen WHMCS und Alfahosting DNS Robot Einleitung Das Ziel dieses Projekts ist die Entwicklung einer Schnittstelle zwischen dem Webhosting Management System WHMCS und dem Alfahosting DNS Robot. Die Schnittstelle soll es ermöglichen, Domains direkt über WHMCS zu registrieren, zu verwalten und die zugehörigen DNS-Einträge zu bearbeiten. Dadurch wird eine effiziente und automatisierte Domainverwaltung für Endnutzer und Administratoren gewährleistet. Funktionsumfang Domainverwaltung Überprüfung der Verfügbarkeit einer Domain Registrierung neuer Domains Transfer bestehender Domains Verlängerung und Löschung von Domains Abfrage des aktuellen Domainstatus Domainkauf Automatisierte Registrierung ...

    €166 Average bid
    €166 Průměr. nabídka
    4 nabídky

    We need a skilled developer to review our cryptotrading webapp(FARM Stack), adding a Admin Panel Frontend Layout and ultimately fix and improve our code. The frontend should be built with NextJS or React, we're want to use MongoDB for data storage, and AWS to host our Python application. The project requires exceptional knowledge in: Python, FastAPI, NextJS/React, MongoDB, CCXT, API, Websockets and an expert level understanding of the API docs of the following exchanges: Bybit, Bitget and OKX. Key requirements: - Fixing backend functionality and API issues - Implementing frontend - Enhancing Error Handling, Data Synchronization, Connection Stability, Security and AWS efficiency - Reviewing and Enhancing our code. At the end of the project, we would need a tutorial on how to set ever...

    €766 Average bid
    €766 Průměr. nabídka
    113 nabídky

    Wir möchten gerne auf einigen Marktplätzen Stripe als Zahlungsmöglichkeit anbieten und benötigen daher die Möglichkeit, Stripe-Transaktion in das Zahlungsmodul von JTL zu laden (nicht JTL-Shop, sondern die WaWi). Entweder wird aus Stripe direkt eine CSV generiert und in google drive gespeichert, welche wir einfach manuell einlesen können. Oder es wird mittels ein Workflow gebaut der über die Stripe-API die erfolgreichen Transaktionen abruft und im google drive als CSV abspeichert. Wichtig: Diese CSV muss immer aktualisiert werden, sprich neue Transaktion müssen hinzugefügt werden. Alte Transaktionen müssen nach 7 Tagen automatisch aus der CSV wieder gelöscht werden, sonst läuft die CSV ins Unermessliche voll. Sollte es eine a...

    €141 Average bid
    €141 Průměr. nabídka
    7 nabídky

    I'm looking for a skilled developer to integrate Facebook login and the WhatsApp Business API into my PHP web platform. Key Requirements: - Simplifying user login with Facebook - Enabling users to link their accounts with WhatsApp - Allowing users to create new WhatsApp numbers via the platform The ultimate goal is to allow users to send messages through the platform only. I already have the necessary credentials for both Facebook and WhatsApp Business API. Your role will also encompass managing permissions and implementing the actual integrations. Ideal Skills: - Proficiency in PHP and web development - Experience with Facebook and WhatsApp Business API integrations - Understanding of user permission management

    €31 Average bid
    €31 Průměr. nabídka
    17 nabídky

    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

    €462 Average bid
    €462 Průměr. nabídka
    17 nabídky

    I'm seeking a WordPress expert for custom modifications. The primary focus of this project will be utilizing APIs for data synchronization across my site. Trello board: Areas of Expertise: - Theme Customization: Not a priority for this project, but a plus. - Plugin Development: Any necessary custom plugins may need to be created for optimal API use. - Performance Optimization: Ensure the site maintains its speed and efficiency post-modification. Ideal Skills: - Extensive WordPress experience: Particularly in using APIs. - Strong understanding of data synchronization processes. - Ability to create and modify plugins as necessary. The goal is to have a smoother, more cohesive site experience through effective data synchronization. Please include examples of similar projects you...

    €192 Average bid
    €192 Průměr. nabídka
    94 nabídky

    We are seeking a professional developer with expertise in **CodeIgniter** and **Flutter** to work on our educational platform, which is based on the **EduAppGT Pro School System** Over the years, the platform has been heavily customized, and we aim to further enhance it while integrating it with a newly developed mobile application. #### Scope of Work: 1. **Mobile Application Development (Flutter)**: - Develop a completely new mobile application using **Flutter**, fully integrated with our existing educational platform (for student Users Only). - The app will provide key features such as student and teacher dashboards, interactive learning tools, notifications, and more. 2. **Ongoing Platform Development (CodeIgniter)**: - Customize, enhance, and maintain our existi...

    €18 / hr Average bid
    €18 / hr Průměr. nabídka
    46 nabídky

    We are seeking a professional developer with expertise in **CodeIgniter** and **Flutter** to work on our educational platform, which is based on the **EduAppGT Pro School System** Over the years, the platform has been heavily customized, and we aim to further enhance it while integrating it with a newly developed mobile application. #### Scope of Work: 1. **Mobile Application Development (Flutter)**: - Develop a completely new mobile application using **Flutter**, fully integrated with our existing educational platform. - The app will provide key features such as student and teacher dashboards, interactive learning tools, notifications, and more. 2. **Ongoing Platform Development (CodeIgniter)**: - Customize, enhance, and maintain our existing web-based platform. ...

    €18 / hr Average bid
    €18 / hr Průměr. nabídka
    60 nabídky
    Blockchain Development
    3 dní left
    Ověřený

    We are seeking a skilled developer to create a Solana trading bot that replicates the functionalities of an existing trading bot. The ideal candidate should have experience in blockchain technology, specifically with Solana, and a strong understanding of trading algorithms. You will be responsible for coding, testing, and ensuring smooth operation of the bot. If you have a passion for trading technologies and a proactive approach to problem-solving, we want to hear from you! What are advantage and disadvantage in this bot I want to implement? Share the screenshot marked or video.

    €21 / hr Average bid
    €21 / hr Průměr. nabídka
    64 nabídky

    Project Overview Create a Python module that calculates NBA player statistics using the balldontlie API. The module should fetch and process player game statistics across multiple seasons, providing both rolling averages and game-by-game totals in specific formats. Key Requirements Data Source Use the balldontlie API () API endpoints to be used: /players (for player search) /stats (for game statistics) Core Functionality Player Identification: - Accept player name as input - Convert player name to player_id using the API - Handle cases where player isn't found Game Data Collection - Fetch game statistics sorted by most recent first - Only include games where the player logged minutes played (min > 0) - Pull data across multiple seasons if needed - Must collect enough game...

    €162 Average bid
    €162 Průměr. nabídka
    41 nabídky

    I'm seeking a professional to refine the English to Punjabi transliteration system on my Shopify website. Currently, the transliterations are often incorrect, and the system does not convert natural English input accurately. The ideal candidate will integrate the Google Input Tools API to improve this system, however, alternative solutions may be considered if they can offer a better service. Key Requirements: - Natural English text input support: Users should be able to input regular English text and have it accurately converted to Gurmukhi. - Accurate Punjabi (Gurmukhi) output: The transliterations need to be precise, eliminating the need for users to type in specific Gurmukhi-style English fonts. - Real-time transliteration: The system should provide instant transliteration as us...

    €59 Average bid
    €59 Průměr. nabídka
    28 nabídky
    Instagram Overlay for Twitch
    2 dní left
    Ověřený

    I'm a streamer. I need a program/overlay that can show the number of my Instagram followers on my stream in real time. They must update in real time.

    €96 Average bid
    €96 Průměr. nabídka
    13 nabídky

    I'm in need of a skilled freelancer with extensive experience in Zoho CRM and database management to synchronize our Zoho CRM with our database. Key Responsibilities: 1. Data Update & Cleanup: - Align our CRM with the database by adding missing fields, such as 'Subscription', 'Rating'. - Identify and clean duplicate and dead records, i.e. blocked email addresses. 2. Database Synchronization: - Develop a Python script for fetching data from our database and updating or adding records in Zoho CRM. - Ensure the script is capable of handling incremental updates and can operate on a set schedule. 3. Documentation & Automation: - Create clear and concise documentation detailing the cleanup and synchronization processes. - Automate the sync ...

    €132 Average bid
    €132 Průměr. nabídka
    59 nabídky

    I'm in need of an automation specialist familiar with Selenium, Zapier or Make.com. The task involves pushing and pulling most LIVE sales data from into my Knack app. The idea is to completely remove the need to use eBay's seller hub website for finding information. We also use ebay to purchase items and need to have that data imported into the app. Purpose of Data: The primary purpose of this data transfer is for customer service/sales tracking, automate purchase order information, and move the following information to knack: Order statuses of our customers orders returns cancellations cases or requests new purchases(we're the buyer) customer shipping tracking numbers(we're the seller) purchase shipping tracking numbers(we're the buyer) Active listing data that...

    €527 Average bid
    €527 Průměr. nabídka
    47 nabídky

    I am looking for an experienced freelancer with in-depth knowledge of OpenApply to support our school’s admissions and re-enrollment processes. The ideal candidate will have either worked directly at OpenApply or at a school/schools that use OpenApply extensively. The scope of this project includes: • Customizing the admissions process to suit our school’s unique needs. • Enhancing communications and setting up custom notifications throughout the admissions flow. • Designing and improving forms, including application and re-enrollment forms. • Optimizing the use of OpenApply for more efficient workflows and better functionality. • Configuring API integration to PowerBI, PowerAutomate, SharePoint. • Configuring API integration to iSAMS. &bu...

    €25 / hr Average bid
    €25 / hr Průměr. nabídka
    14 nabídky

    I am looking for an experienced developer to create a custom VPS control panel integrated with Proxmox, specifically designed for managing KVM-based virtual machines. The control panel should include features similar to platforms like Virtualizor, ConvoyPanel or Virtfusion. Below are the key features and requirements: - Key Features Proxmox Integration: Seamless integration with Proxmox for managing KVM virtual machines, including creating, deleting, and managing VMs, accessing the VNC console, and configuring disk and network settings. - VPS Management: Full control over VPS instances, such as starting, stopping, restarting, and other management capabilities. - Resource Monitoring: Real-time performance statistics (CPU, RAM, disk usage, network bandwidth) for each VPS, ensuring efficie...

    €241 Average bid
    €241 Průměr. nabídka
    35 nabídky
    AI Agents Creation Platform
    2 dní left
    Ověřený

    Proyect 1: 1. Implementing a platform for the creation, training, and management of AMCO AI agents is an integrated system designed to streamline the creation, training, monitoring, and deployment of artificial intelligence agents. These agents are programmed to execute specific tasks, such as analyzing data, interacting with users through natural language, predicting behaviors, or automating processes. The platform will enable users, even those without advanced programming knowledge, to develop and manage customized AI agents tailored to their operational needs. 2. Create a first AI agent capable of accessing the cadastral database and resolving queries for AMCO staff PROPOSED ARCHITECTURE: Frontend (User Interface): Streamlit: To create an intuitive interface where users can: Create ...

    €32 / hr Average bid
    €32 / hr Průměr. nabídka
    36 nabídky

    I'm in urgent need of a pre-existing, cloud-based payroll system that can seamlessly integrate with my ERP system. The payroll program must possess the following functionalities: - Automatic tax calculations - Direct deposit processing Please note, I do not wish to entertain bids proposing to construct a payroll system from scratch. This project is for a ready-to-go solution that can be implemented immediately. The payroll will include tax tables for all 50 US states, direct deposit, and automatic tax payments to state and federal government The integration with my ERP system will be through an API. Therefore, experience in API integration is essential. Proficiency in payroll systems, ERP systems and cloud technology will greatly enhance your chances of being awarded this project....

    €2231 Average bid
    €2231 Průměr. nabídka
    94 nabídky

    Collaboration Opportunity for Automation Projects Hello, D.N.E Hasharon Diamonds LTD is seeking an experienced automation developer to collaborate on various projects. Our current focus includes: Automation with WhatsApp API integration: We are currently evaluating providers such as Twilio, , and SendPulse to determine the best fit for our needs. API development WordPress integration Integration of AI technologies, including OpenAI's ChatGPT and Whisper APIs We aim to enhance our systems by incorporating advanced AI capabilities, such as natural language processing and speech-to-text functionalities. We are interested in both project-based collaborations and hourly sessions via Zoom for joint development and knowledge sharing. Could you please provide: An overview of your exper...

    €19 / hr Average bid
    €19 / hr Průměr. nabídka
    57 nabídky
    Proeycto Tesis
    1 den left

    Descripción: “Donde salimos” va a generarle a los usuarios varias opciones de lugares posibles para salir ya sea por ranking proporcionados por los mismos usuarios, por tipo de gastronomía, música, o género del lugar. Los beneficios van a ser tanto para los usuarios como para los dueños de los bares y boliches. Por el lado de los usuarios podrán elegir la mejor opción ya sea por precio, horarios, ranking, Etc. Por el otro lado tenemos a los dueños de los bares y boliches quienes podrán promocionar sus locales y generará una competencia sana entre ellos para mejorar sus lugares y proporcionar un mejor servicio. Categoría: Programación y Tecnología Subcategoría: Programación ...

    €559 Average bid
    €559 Průměr. nabídka
    27 nabídky

    The concept of my software is as follows: I provide an input in this format: :70255400-zone-custom-sessid-OV8O1koo-sessTime-15:184fERnR From this line, the IP address () is automatically extracted and checked against the following websites: : To determine the proxy type. If the proxy type is identified as Residential or Cellular, the process continues. : To check the fraud score of the IP address. If the fraud score is below 10, the original proxy line is included in the output. The software delivers only the valid proxy lines that meet these criteria as the final output.

    €81 Average bid
    €81 Průměr. nabídka
    25 nabídky

    I'm seeking a full-time Python Django freelancer to assist with API development for a web application. Key Responsibilities: - Implement user authentication - Oversee database integration - Enable real-time updates - Develop an admin panel - Integrate with 3rd party APIs The API will cater to both internal and external users, so experience in creating secure, scalable and efficient APIs is crucial. The ideal candidate should have: - Extensive experience with Python and Django - Proficiency in API development - Knowledge of implementing user authentication and database integration - Capability to facilitate real-time updates - Skill in developing admin panels - Familiarity with 3rd party API integration - Understanding of both internal and external API requirements

    €1 - €5 / hr
    Zapečetěný DOM
    €1 - €5 / hr
    19 nabídky

    I'm in need of a robust SaaS platform that can support small businesses in their marketing and sales efforts. The software should seamlessly integrate functionalities like email marketing automation, lead generation and tracking, and social media management. Key Features: - Email Marketing Automation: Craft and distribute engaging email campaigns. - Lead Generation & Tracking: Proactively identify and monitor potential sales leads. - Social Media Integration: Manage and track social media interactions. - SDR (Sales Development Representative) Functionality: Pre-qualify leads, schedule calls, and follow up on potential sales. - Sales Team Management: Oversee the sales team, create sales funnel dashboards, and set KPIs. - Support Services: Copywriting, video editing, and sales coac...

    €551 Average bid
    €551 Průměr. nabídka
    39 nabídky

    I need a skilled professional with experience in using the Adobe Acrobat API/SDK. The task involves adding 10x10 point red squares to a text-based PDF file. These squares should be placed over specific two-digit numbers, located at coordinates I will provide. Key Responsibilities: - Utilize Adobe Acrobat API/SDK to modify the PDF - Accurately place red squares over specified numbers Ideal Skills and Experience: - Proficient in Adobe Acrobat API/SDK - Attention to detail - Able to follow provided instructions accurately

    €488 Average bid
    €488 Průměr. nabídka
    20 nabídky

    I'm seeking a webMethods specialist to optimize existing recipes for orchestrating unstructured data transfer to and from an AI LLM. Your role will also involve automating the verification of the LLM output with provided lookup tables. Key Responsibilities: - Fine-tune existing webMethods recipes to enhance data transfer efficiency and accuracy. - Orchestrate the transfer of unstructured data, specifically text files, to and from the AI LLM. - Implement automated systems for verifying LLM output against provided lookup tables. Ideal Skills: - Proficient in webMethods with proven experience in fine-tuning recipes. - Familiarity with handling unstructured data, particularly CSV files. - Competence in setting up automated verification systems. Experience with AI LLMs and lookup tables...

    €31 / hr Average bid
    €31 / hr Průměr. nabídka
    39 nabídky

    I'm seeking a seasoned Full-Stack Developer to assist with integrating a RESTful API into my existing project. The task requires both frontend and backend expertise. Key Responsibilities: - Seamlessly integrate a third-party RESTful API into the project. - Ensure the integration is smooth and does not disrupt existing functionality. - Potentially develop new features or fix existing bugs as necessary during the integration process. Ideal Skills and Experience: - Proficient in both frontend and backend development. - Extensive experience with RESTful API integration. - Strong problem-solving skills for debugging and feature enhancement. - Ability to work efficiently and meet project deadlines.

    €100 Average bid
    €100 Průměr. nabídka
    35 nabídky

    Se necesita integrar una API externa con un sitio web en Wordpress, con el fin de extraer datos de esta API y mostrarlos en una sección de la web. Los datos son referentes a propiedades que ya están cargadas en esta API, y se deben extraer datos relevantes como nombre de propiedad, precio, cantidad de dormitorios, superficie e imagen referencial, para luego dar la posibilidad de cotizar la unidad seleccionada.

    €159 Average bid
    €159 Průměr. nabídka
    49 nabídky

    We are looking for a highly skilled freelance AI Agent Developer to design and build a robust AI-powered conversational bot that seamlessly interacts with customers, answers inquiries about our business, and integrates with data APIs to deliver real-time, value-driven information. Responsibilities: - Develop a sophisticated AI agent capable of handling diverse customer queries. Integrate the bot with third-party APIs and proprietary data sources to fetch and deliver accurate information. - Design a knowledge base for the AI agent, ensuring comprehensive coverage of business operations and offerings. - Optimize the conversation flow for accuracy, efficiency, and a natural user experience. - Test, debug, and fine-tune the bot to enhance performance and reliability. - Collaborate with intern...

    €13 / hr Average bid
    €13 / hr Průměr. nabídka
    19 nabídky
    Explicit Filtering Phase -- 2
    Ukončeno left
    Ověřený

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

    €457 Average bid
    €457 Průměr. nabídka
    29 nabídky

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