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!

Müşterilerimiz, API Developers freelancerlarımızı 182,302 değerlendirme içinden 5 üzerinden 4.9 ile derecelendirdi.
API Developers İşe Alın

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!

Müşterilerimiz, API Developers freelancerlarımızı 182,302 değerlendirme içinden 5 üzerinden 4.9 ile derecelendirdi.
API Developers İşe Alın

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    33 iş bulundu

    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...

    €575 Average bid
    €575 Ortalama Teklif
    21 teklifler

    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

    €487 Average bid
    €487 Ortalama Teklif
    20 teklifler

    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 Ortalama Teklif
    37 teklifler

    1. Need to pull Nifty & Sensex Live Option Chain data for Current Expiry 2. This need to be pulled in to Google Sheets automatically as real time 3. Google Sheet should be refreshed every 1 minutes to get the latest data 4. These all process must be run independently without any regular login or third party app (Prefer with Zerodha Kind of API)

    €11 Average bid
    €11 Ortalama Teklif
    10 teklifler

    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 Ortalama Teklif
    35 teklifler

    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.

    €160 Average bid
    €160 Ortalama Teklif
    44 teklifler

    We're building a paper trading app focused on the Indian stock market. Our app is fully developed, and we need an expert to integrate real-time stock market data into it. (API) Key Responsibilities: - Provide or recommend a reliable API source. - Collaborate with our development team to integrate the data source into our app. Ideal Candidate: - Has experience with financial APIs. - Possesses knowledge of the Indian stock market. - Can suggest trustworthy data sources. - Excellent collaborative skills for seamless teamwork with our developers. Please note, we don't require ongoing support after the integration, nor do we need help troubleshooting initial issues. This is the first time we're integrating real-time data into our app.

    €123 Average bid
    €123 Ortalama Teklif
    10 teklifler

    I'm looking for a talented trader with proven skills in Nifty options. The main goal of this project is to develop a balanced strategy that aims to optimize both profits and risks. Key Requirements: - Creation of an 'Indicators and Signal Based' Nifty options strategy - Use of weekly options for trading - Prior experience and proof of profitability in similar projects Ideal Skills: - Deep understanding of Nifty market and options trading - Proficiency in developing and implementing indicators and signals based strategies - Excellent risk management skills - Ability to provide evidence of past successful strategies I need someone who can create a comprehensive, effective strategy with clear indicators for buying and selling. Please provide any relevant proof of your past s...

    €86 Average bid
    €86 Ortalama Teklif
    7 teklifler

    I need an OCR solution specifically designed to recognize cursive handwriting. The text is in Vietnamese and the final output should be in a formatted text similar to a Word document. Ideal Skills: - Expertise in OCR technology - Proficiency in recognizing cursive handwriting - Fluency in Vietnamese - Experience in formatting text like a Word document Please provide relevant past work examples in your bid.

    €19 / hr Average bid
    €19 / hr Ortalama Teklif
    69 teklifler

    READ CAREFULY: I'm looking for a professional who can help me find the PHP script for that websites that provide free social media engagement, specifically Instagram and TikTok such as: Instagram Likes Instagram Story Views Instagram Followers Instagram Video/Reel/IGTV Views Instagram Saves TikTok Video Views TikTok Video Likes TikTok Video Saves/Favorites TikTok Video Shares Some sample websites (they use the same idea and script only theme changed): It's important to find the source code in somewhere or find me the seller of this source code. Otherwise you can give me your proposal for creating the same type system.

    €512 Average bid
    €512 Ortalama Teklif
    39 teklifler

    I'm looking for a seasoned professional with extensive experience in the Oracle Micros RS platform, specifically for retrieving payment information. The specific tasks will include: - Data Analysis and APi integration Ideal candidates should have: - Proven experience with the Oracle Micros platform, particularly withAPi developing and a keen eye for detail. - Previous experience in retrieving data using APis from micros rs

    €532 Average bid
    €532 Ortalama Teklif
    32 teklifler

    I need a Python-based program that integrates with the Odds API and Airtable, calculates hit percentages for specific prop types (e.g., assists, points, rebounds, threes), and updates Airtable with the results. This program will run locally on my computer and will be delivered as an executable file .exe for windows. Key Deliverables: - A working Python script or executable that: - Retrieves data from the Odds API (player name, prop category, odds, and line value). - Filters the data based on a specific odds threshold (-400 to -1200). - Checks Airtable to avoid duplicate records (player name, prop category, and line value). - Inserts the data into Airtable if the combination of player, prop, and line doesn't already exist. - Retrieves totals for the relevant prop category (e.g., assis...

    €189 Average bid
    €189 Ortalama Teklif
    44 teklifler
    Pendekar 188
    4 gün left

    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

    €6 / hr Average bid
    €6 / hr Ortalama Teklif
    5 teklifler

    I'm in need of a WordPress whiz with extensive experience in plugin development, custom template creation, Elementor templates, and API development. The job will be executed on my PC, so please provide a screenshot of your internet speed and include 'ultraviewer' in your proposal; bids lacking this will be disregarded. The project is segmented into several phases: - Admin Portal Setup & Data Migration - Phase 2: API Development & Testing - Phase 3: Template Creation (This phase is deemed the most critical for the project's success) - Phase 4: Frontend Integration (Search & Filtering Systems) Key Responsibilities: - Creating templates for WordPress: This is crucial for the project's success. You should have a strong background in template creation. -...

    €19 / hr Average bid
    €19 / hr Ortalama Teklif
    236 teklifler

    Main Goals Fix the error preventing profile_id retrieval from Amazon Advertising API. Ensure seamless campaign data fetching using Postman and Python scripts. Current Errors/Work Done Working: Successfully generated access and refresh tokens via Postman and Python. Error: API fails when fetching profile_id despite valid tokens. Tasks Debug and resolve the profile_id fetching issue in Postman and Python. Verify data fetching for campaigns post-resolution. Document the steps for clarity and future reference. Deliverables Fully functional Postman and Python scripts fetching profile_id. Comprehensive documentation of the debugging and resolution process. Validation that campaign data fetching works correctly post-resolution. Resources: In this section you get the required resources and f...

    €12 Average bid
    €12 Ortalama Teklif
    9 teklifler

    Resolve "Profile_ID" Fetching Issue with Amazon Advertising API Problem Statement We are encountering an issue while attempting to fetch the profile_id from the Amazon Advertising API. Despite successfully generating access and refresh tokens through both Postman and a Python script, the API fails when fetching the profile_id. ---Required credentials will be provided when needed--- API Scopes Attempted: advertising::campaign_management advertising::audiences profile:read cpc_advertising:campaign_management Steps Performed and Observations Postman Steps (Working and Non-Working Parts): Downloading and Importing Files Download the mandatory JSON files (environment and collection) from the GitHub repository: Amazon Ads Advanced Tools. Import the files into Postman. Credenti...

    €15 Average bid
    €15 Ortalama Teklif
    7 teklifler

    Consultation and assistance to integrate the following api to have my current web app which is middleware for most ai models api, to where when i chat to the ai and ask to do tasks from the following list, it can do it for me. Here is the web app: Here are the api tasks i want to have the ai do: Here’s a list of companies providing APIs that can handle various business tasks, sorted by category: --- 1. Communication Twilio SendGrid WhatsApp Business Telegram Zoom Vonage --- 2. Scheduling and Calendar Google Calendar Outlook Calendly --- 3. Accounting and Finance QuickBooks Xero FreshBooks Wave Stripe PayPal Square Plaid --- 4. E-Commerce and Inventory Shopify WooCommerce Amazon eBay TradeGecko (QuickBooks Commerce) --- 5. Customer Relations...

    €17 Average bid
    €17 Ortalama Teklif
    20 teklifler
    Finaliza um aplicativo
    1 gün left
    Onaylı

    I need a competent developer to finalize an application. The application is already prepared, but an integration API is missing. I couldn't find this integration API as Uber and 99 did not provide it to me. So, if someone already has these authorized APIs, they will be five steps ahead because the application only needs this integration to work. Therefore, I am looking for someone who already has these API credentials.

    €203 Average bid
    €203 Ortalama Teklif
    19 teklifler

    Title: Freelance Developer Needed for Stripe Integration with 3D Secure in Project Description: We are looking for a freelance developer experienced in to integrate a payment system with support for 3D Secure (3DS) into our Pre Check-in platform for vacation rentals. The main goals are to securely collect user information and process payments in compliance with current standards. The project will be deployed on Vercel. We currently use native components but are open to implementing React if needed for an efficient Stripe integration using libraries like @stripe/react-stripe-js. Responsibilities: • Set up and deploy Stripe’s Payment Intents API in the backend using Next.js. • Build a secure payment form on the frontend using efficient components, either n...

    €1157 Average bid
    €1157 Ortalama Teklif
    102 teklifler

    Our quote engine at has built-in automation that hasn't been working since we paused operations. Prior to this, we had a seamless process where user data inputs would trigger lead imports to SuiteCRM, email quotes, send SMS messages via Clicksend, and schedule phone calls through Justdeliverit. Your task is to reconnect and fix the existing code, which is still intact, or hook it up to a new account and APIs. The automation should include: - Correctly importing leads to SuiteCRM - Ensuring automated email and SMS sending - Facilitating scheduled phone calls The key issue currently is that the automations are not triggering. Skills and experience ideal for this job include: - Expertise in (formerly Integromat) - Proficient in API integrations, specifically SuiteCRM, Clicksend...

    €25 Average bid
    €25 Ortalama Teklif
    18 teklifler

    I have my project APIs I need someone experienced in this field to check and verify that the apis work as expected. They are supposed to be used in my Flutter app and I want to ensure they are working as expected. i have the Postman collection file for testing and can provide the APIs too.

    €30 Average bid
    €30 Ortalama Teklif
    40 teklifler

    I'm looking for a professional with extensive experience in setting up eCommerce sites on Wix to assist me in creating a datafeed from my supplier, Ingram Micro, to my Wix shop. Key Tasks: - Advise on the best method to set up the datafeed (whether directly or through a 3rd party tool like Zapier) and implement it. The setup should be maintainable on my end. - Ensure the datafeed includes product descriptions, quantity, price and possibly pictures. - If using a 3rd party tool, assist me in managing price mark ups. If Wix has this functionality, guide me on how to use it. - Help set up the shop front including categories, sub-categories and any other recommended elements. - Link my online payment system, Zeller. - Configure notification emails for placed orders. Please only respond...

    €457 Average bid
    €457 Ortalama Teklif
    102 teklifler

    Project Overview: We are seeking a developer to build a real-time audio processing backend system. The system should process audio data from the frontend, transcribe it, analyze the content type (instruction or response), and generate appropriate outputs using a natural language model (e.g., ChatGPT). Key Requirements: 1. Audio Data Handling: - Ability to receive raw audio data in real-time from the frontend. - Efficient processing of continuous data streams. 2. Speech-to-Text Processing: - Convert the received audio data into text using advanced speech-to-text technology. 3. Content Analysis: - Determine whether the transcribed text is an instruction or a response. - Implement logic to handle both scenarios effectively. 4. Natural Language Processing: ...

    €97 Average bid
    €97 Ortalama Teklif
    11 teklifler

    Se busca un técnico altamente cualificado para llevar a cabo la implementación completa y el despliegue final de una herramienta avanzada de análisis deportivo. El desarrollo de esta herramienta ya está finalizado y listo para ser implementado en un entorno de producción. El proyecto se encuentra actualmente en su fase de preparación para lanzamiento, por lo que la tarea se centrará en instalación, integración y optimización final.

    €12 / hr Average bid
    €12 / hr Ortalama Teklif
    9 teklifler
    NFT Minting
    11 saat left

    I'm looking to integrate Project 2 into Project 1's codebase while ensuring proper wallet connection functionality. The project involves NFT minting with specific requirements. Key Tasks: 1. Multi-Minting Functionality: - Implement both single and multiple minting options. - For multiple minting, ensure NFTs have the same description and sequential naming (e.g., agent#1, agent#2, etc.). 2. Commission Integration: - Add a 5% commission to the minting cost. - Set up the transfer of this commission to a designated address. Please review both codebases thoroughly before providing a budget and accepting the project. Familiarity with NFT minting and wallet connection integration is essential.

    €65 Average bid
    €65 Ortalama Teklif
    53 teklifler

    Looking for a Laravel Developer to Build a "Prop Forex" App Integrated with cTrader API Hello, I am looking for a skilled Laravel developer to create a "Prop Forex" application, a funding account system similar to platforms like FTMO and Funded Next. Key Requirements: Develop a user-friendly dashboard for traders and admin. Implement trading rules such as profit targets, daily loss limits, maximum drawdown, etc. Integrate the app with the cTrader API to track trader performance in real-time. Create a secure payment system for processing fees and payouts. Admin control panel with detailed reports on accounts and trader performance. Design a professional and user-friendly UI/UX. Required Skills: Strong expertise in Laravel and PHP. Solid experience with API integratio...

    €3736 Average bid
    €3736 Ortalama Teklif
    109 teklifler

    I'm seeking a skilled developer to build backend software for my B2B company. The software should have functionalities for order management, customer relationship management, and inventory management. Key Responsibilities: - Develop and implement the software using MongoDB and Google Cloud. - Utilize Google Cloud's Storage Solutions for data storage. - Implement Cloud Firestore (NoSQL document database) for our data storage needs. Ideal Skills: - Proficient in MongoDB and Google Cloud. - Experience with B2B software development. - Knowledge and experience with Cloud Firestore. The goal is to create a robust, efficient and scalable backend software that meets the needs of our B2B operations.

    €1207 Average bid
    €1207 Ortalama Teklif
    120 teklifler

    I'm in need of a skilled developer to create an automated trading bot for Sierra Chart using the Interactive Brokers API for trades. This bot's key function will be executing trades on my behalf, based on a set of very simple custom trading signals I have already created. Key Requirements: - Proficiency in Sierra Chart and Interactive Brokers - Experience in developing automated trading bots - Ability to implement custom trading signals into the bot The ideal candidate for this project would be someone with a strong background in algorithmic trading and a knack for understanding and applying specific trading criteria. If you have experience with Sierra Chart and Interactive Brokers, and can deliver a fully functional automated trading bot, I would be keen to discuss this projec...

    €555 Average bid
    €555 Ortalama Teklif
    32 teklifler

    I'm looking for a Python developer skilled in working with the Amazon Product Advertising API (PA-API). The goal is to scrape data from all product categories on Amazon, focusing on specific details like price, discounts, coupon information, and availability. Key Requirements: - Proficient in Python - Experience with Amazon PA-API - Capable of fetching comprehensive product details - Able to deliver data for personal analysis The data will be used for personal analysis. Therefore, I need someone who can ensure the data is retrieved accurately and efficiently.

    €189 Average bid
    €189 Ortalama Teklif
    37 teklifler

    I'm in need of a regular Tally TDL developer who can create a new module focused on Invoice Management. The module should primarily automate the handling of Purchase Bills. Key Requirements: - Expert in Tally TDL with a proven track record of developing new modules - Experience in creating Invoice Management systems - Ability to implement automation features - Ability to have experience on Third Party API's and AWS Server Ideal Skills: - Tally TDL - Module Development - Automation - Invoice Management Systems Please share examples of your previous work in your bid.

    €260 Average bid
    €260 Ortalama Teklif
    10 teklifler
    Python Dev - API Guru
    Bitti left
    Onaylı

    We are looking for a Junior Python Developer to join our team and assist with API integrations and scripting tasks. The ideal candidate will have experience working with RESTful and Open APIs, writing clean and efficient Python scripts, and troubleshooting integration issues. Main tasks will include getting data from APIs, storing them in a database then writing formulas to display them in the required output. Key Responsibilities: Develop and maintain Python scripts for API integrations. Work with RESTful APIs and JSON data formats. Test and debug scripts to ensure reliability and performance. To be considered you must reply to the below 1) Please share your experience with APIs and your skillset with? 2) whats is the biggest API project you worked on? 3) What are your python and da...

    €692 Average bid
    €692 Ortalama Teklif
    131 teklifler

    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 Ortalama Teklif
    19 teklifler

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

    €456 Average bid
    €456 Ortalama Teklif
    29 teklifler

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