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!

Från 186,646 betyg, betygsätter kunder vår API Developers 4.86 av 5 stjärnor.
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    32 jobb har hittats, med prissättning USD

    Looking for a skilled freelancer who can develop a simple process of click few buttons and select input file to extract numeric digits from JPEG images hosted on a cloud server using the Google Vision API with their TEXT_DETECTION. More detail information from google on text extraction on remote image: The task involves extracting numeric digits using Google's TEXT_DETECTION feature from JPEG images hosted on a cloud server.: - Image URLs are provided in an Excel file (sample attached), with over 200 URLs. - The extracted numeric digits need to be added to the same Excel file in columns next to each corresponding image URL. We require only the digits with a length between 4 to 8 digits. Other text information is not needed. Google Vision API supports offline asynchronous batch im...

    $54 (Avg Bid)
    $54 Snittbud
    22 bud
    Zoho Creator Order Management App 6 dagar left
    VERIFIERAD

    I need a dedicated expert to complete an order management application using Zoho Creator. The App is 75% completed by a former freelancer who has gone MIA. The application manages Mobile SIM Card ordering and ongoing support. The system is integrated with Zoho WorkDrive, Zoho CRM and Zoho Desk presently, however the Zoho Desk integration for the submission and updating of support requests seems to have some errors. The application is integrated to our soft switch to provide a testing function which I will go into more detail about with the successful freelancer. This has currently been tested through API integration to Enswitch, however needs finishing. We need further integration to our carrier/s through API for ordering, updating and cancelling of services. I have attached some d...

    $366 (Avg Bid)
    $366 Snittbud
    35 bud

    I'm looking for a Laravel expert who can help me with the continued development of a web application. You should have extremley strong experience with FilamentPhp with package creation, multi-tenant, User authentication, Database integration, and API development. Key Requirements: - Strong experience in Laravel, particularly working with Laravel 11 - Expertise in integrating and optimizing a database within Laravel - Proficiency in creating secure user authentication systems - Previous experience with API development is a must - Knowledge in FilamentPHP is essential with good eye for design The ideal candidate should have a good understanding of modern web development techniques and be able to deliver clean, maintainable and well-documented code. A keen eye for detail, problem-solv...

    $13 / hr (Avg Bid)
    $13 / hr Snittbud
    112 bud
    ManyChat WooCommerce Integration 6 dagar left
    VERIFIERAD

    I'm searching for a skilled ManyChat developer to integrate the platform with my WooCommerce store. Key features and marketing flow should be implemented. Key Functionalities Required: - Automated order notifications: I need to ensure my customers receive real-time updates regarding their orders. This feature is crucial for customer satisfaction and retention. - Abandoned cart reminders: An effective way to recover potential lost sales and enhance user experience. The system should intelligently send reminders to customers who abandoned items in their carts. - Marketing flow: I'm looking to implement a comprehensive marketing flow that enhances customer engagement and drives sales. This includes: - Welcome messages and product recommendations for new customers: This is a key ...

    $470 (Avg Bid)
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    105 bud

    Project: Development of a server and API for integration with an external distributor API and providing functionality to partners through a proprietary API. Objective: To create a reliable API gateway integrated with an external distributor's API, automating the processes of topping up gaming accounts, retrieving information about available games and pricing, and offering services to partners for their own use. Main Tasks and Requirements: Server Development: Setup and support of a server to handle API requests. Ensure continuous operation of the server and fast processing of requests. API Development and Implementation: Integration with the distributor's API to perform top-up operations, retrieve information about available games, prices, and denominations. Implementation of...

    $1232 (Avg Bid)
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    57 bud

    I'm in need of a skilled and experienced web developer who can work with Tonapi. Tools for: - Get Wallet Portfolio: example - Wallet PNL: example or (not finished yet) - Show Last 20 swap transactions Build membership system for Tools: - Admin dashboard to manage user, package, sales report, referral, email - Payment system using Toncoin - Referral system User dashboard member: - Add wallet to favorites - Upgrade membership

    $494 (Avg Bid)
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    108 bud
    Crypto Algo Trading - Python 5 dagar left
    VERIFIERAD

    I am looking for a skilled programmer with experience in algo trading using Python - preferably with experience with crypto exchange API. I already have a specific strategy in mind, so I would like someone who can work with me to implement it. Ideal skills for this job include proficiency in Python and experience in API trading. I am looking for a programmer who can work with me on a long term basis with support. Details can be discussed.

    $13 / hr (Avg Bid)
    $13 / hr Snittbud
    31 bud

    I am looking for a skilled programmer with experience in algo trading using Python - preferably with experience with crypto exchange API. I already have a specific strategy in mind, so I would like someone who can work with me to implement it. Ideal skills for this job include proficiency in Python and experience in API trading. I am looking for a programmer who can work with me on a long term basis with support. Details can be discussed.

    $24 / hr (Avg Bid)
    $24 / hr Snittbud
    71 bud
    Python Twilio Voice Integration 4 dagar left
    VERIFIERAD

    I'm looking for a Python developer proficient in Twilio to help me integrate 2-way voice functionality into my application. Key Requirements: - Integration of Twilio's Voice API: The primary focus of this project is on handling voice calls in a 2-way manner through Twilio's Voice API. We are using third party applications for STT, TTS and we are able to stream live calls from Twilio to our APIs, however, we are unable to send the new voice generated back to Twilio, error is coming. So kindly quote only if you have expertise in twilio and have worked on similar or same use case earlier. If satisfied, we will consult you again and again in our platform development using multiple features/integrations from Twilio.

    $48 (Avg Bid)
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    7 bud
    AboutNerd 3 dagar left

    "AboutNerd" é um destino online para entusiastas de tecnologia que buscam os últimos gadgets, dispositivos eletrônicos e acessórios inovadores. Com uma ampla gama de produtos tecnológicos de alta qualidade, desde smartphones e laptops até gadgets inteligentes e wearables, o AboutNerd oferece uma experiência de compra conveniente e inspiradora para os aficionados por tecnologia de todas as idades. Preciso de um especialista para fazer páginas de venda e dar manutenção ao e-commerce.

    $404 (Avg Bid)
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    35 bud
    B2B Maintenance and upgrades v2 3 dagar left
    VERIFIERAD

    We would like to extend into a new phase of the B2B project with maintenance and upgrades.

    $19 / hr (Avg Bid)
    $19 / hr Snittbud
    79 bud

    We are looking for a talented and adaptable developer to join our team and work on a variety of website development projects. The ideal candidate should be comfortable working without a precise task description and should be able to create high quality websites, replicating the functionality and design of existing portals. Task: Create a site similar to: - Analyse the specified website portal and replicate its functionality, design and user experience. - Create a visually appealing and user-friendly design based on the aesthetics and layout of the existing portal, without exact design specifications. - Experience with Wordpress or building CMS on frameworks. - Experience with web scraping tasks. - Working through APIs including AI services. - Full-stack website programming experience. - ...

    $1063 (Avg Bid)
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    I am looking for a Big Commerce developer who can customize my online store based on my specific requirements. The focus of this project will be on enhancing the functionality and features of the store. I have a detailed list of the desired features that I would like to be implemented, and I am looking for a developer who can work on going based. Ideal skills and experience: - Strong experience with Big Commerce customization and development - Able to change some functionality. - Knowledge of HTML, CSS, and JavaScript - Ability to work efficiently and meet deadlines. -Our store is live so need to work on sandbox first

    $18 - $150
    Försegla Sekretessavtal
    $18 - $150
    10 bud

    I'm seeking a skilled developer with substantial experience in REST API endpoints and Esri. The role will involve the following tasks: - Implementing a REST API Endpoint. You should have a solid understanding of secure and effective API Restful Endpoints - Ensuring the API supports Esri for both Server and Portal Consumption. This requires an adeptness in managing data flows and integrating varied format support systems. - Accessing and managing the Map services and Feature services functionalities on the Esri Server and Portal. A strong grasp on Esri's map and feature services, and the ability to extract or manipulate data as required, will be key for this task. I have the data, I just need Portal and Server to consume the data. WFS does not work.

    $1199 (Avg Bid)
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    69 bud

    I am seeking an experienced API developer to integrate Zenbooker and ActiveCampaign seamlessly. Primary Tasks: - Develop a strong integration that syncs customer contact data in real-time between the two platforms. - Implement email marketing automation capabilities through this integration. Qualifications: - Proven expertise in API integration specifically with both Zenbooker and ActiveCampaign. - Familiarity with CRM systems and their functionalities. - Reliable and efficient, with a track record of delivering on tight deadlines. The objective is to have a smooth and consistent data flow between the two CRMs, ensuring all customer data is real-time and our marketing automation efforts are efficient.

    $27 (Avg Bid)
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    36 bud

    No placeholder amount/ bid. Give me range at least in bid.. Read project first and mention "read voice conversion" as a password in bid so I know you read it. Now you know why your bid is deleted. I am in need of a skilled developer to integrate a text-to-voice conversion feature into my existing website. You will use API to get data from III party. It can be web based/ stand alone utility or whatever. What your bid must have so I don't delete it: - Show me a project where you had to do text to voice. Send me maximum 3. Minimum 1. Not more. - Show me an email where you had to send voice over file . While the language preference for the text-to-speech conversion is not necessary - you will get data using API and convert it to voice and then send by email. I'm excit...

    $624 (Avg Bid)
    $624 Snittbud
    34 bud

    I wish to incorporate Tuya API into my smart locks to manage temporary passwords. Key requirements include: - Configure Tuya API to interact with Smart locks for the creation and management of temporary passwords. - Develop a system that enables temporary passwords to be active for 1 to 7 days. - Ensure a secure and reliable integration, maintaining the overall efficiency of the smart locks. Ideal Skillsets: - Proficiency in Tuya API is a must. - Prior experience with smart locks integration is highly preferred. - Competency in developing secure password management systems. - Strong communication skills to ensure smooth integration and operation of the system. Please include any relevant experience and similar projects you have worked on in your proposal. We have obtained these locks ,...

    $25 (Avg Bid)
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    31 bud

    I wish to incorporate Tuya API into my smart locks to manage temporary passwords. Key requirements include: - Configure Tuya API to interact with Smart locks for the creation and management of temporary passwords. - Develop a system that enables temporary passwords to be active for 1 to 7 days. - Ensure a secure and reliable integration, maintaining the overall efficiency of the smart locks. Ideal Skillsets: - Proficiency in Tuya API is a must. - Prior experience with smart locks integration is highly preferred. - Competency in developing secure password management systems. - Strong communication skills to ensure smooth integration and operation of the system. Please include any relevant experience and similar projects you have worked on in your proposal. We have obtained these locks...

    $153 (Avg Bid)
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    I am looking for an experienced individual specialized in developing large language models and implementing advanced techniques such as retrieval-augmented generation and reinforcement learning from human feedback. The main goal of this project is to create a sophisticated conversational AI and content generation tool. The scope of the work is to develop an LLM application using an open-LLM integrated with a Reinforcement Learning from Human Feedback (RLHF) mechanism to improve performance. The expected level of implementation is that one of a to Minimum Value Product. Since the LLM must be specialized on a specific industrial sector, it is necessary that it is trained on a set of additional documentation, for example using a RAG (Retrieval-Augmented Generation) mechanism. Consider that ...

    $577 (Avg Bid)
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    I will send you the necessary work diagrams and billing instructions. I don’t accept template messages, I block them immediately. Develop an API gateway for integration with [Company 1] to facilitate the transfer of games, subscriptions, and other services while ensuring the anonymity of connected aggregators from [Company 1]. Main Tasks and Requirements: Integration with [Company 1]: Develop a secure and reliable API for integration with [Company 1], enabling the transfer of games, subscriptions, and other services. Hide information about connected aggregators from [Company 1], presenting data on available products under the Code Games brand. Content and Commission Management: Implement a content management system to manage the product catalog available to [Company 1] and its c...

    $2435 (Avg Bid)
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    I am looking to integrate with N8N to create a comprehensive appointment reminder bot. The main aim for this project is to set up an automated reminder system that will alert our clients about their appointments. Key Project Requirements: - The system should send reminders through multiple channels namely Email, SMS and Voice Call. This multi-channel approach is meant to ensure that clients receive their reminders regardless of their preferred communication channel. - The system should be integrated with and N8N. N8N will serve as the central platform for automation of the reminder system. Ideal Skills and Experience: - Proficient with integration tools like N8N - Familiarity with - Experience in setting up reminder systems - Knowledge of platforms such as Twilio and Gmail for SMS ...

    $508 (Avg Bid)
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    Job Title: Freelance Solutions Architect for Social Impact Collaboration Software Company Overview: Peopled is an early-stage startup dedicated to developing social impact collaboration software aimed at accelerating social impact initiatives by fostering partnerships and enhancing traceability of social impact outcomes. Our beta app () has recently been launched, and we are now gearing up for the development of our full MVP. Project Objectives: We are seeking a Freelance Solutions Architect to help us achieve three critical objectives: Integration with Existing Tools: We prioritize integrating with existing market tools (both free open source and pay-per-use) rather than reinventing the wheel. This approach not only accelerates our time to market but also enhances our product offering....

    $28 / hr (Avg Bid)
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    20 bud

    Project Overview: I've developed a Python-based tool that automates Instagram interactions. It runs on user computer hence the future updates need to be send to user computer . I need to implement a robust license key validation system (so that only paid user can access it ) and a process to securely deliver code updates to users(future updates). Your Mission: Design and implement a backend system that securely validates license keys against our database. Create API endpoints for the client-side application to communicate with the key validation system. Develop a mechanism to securely package and deliver updated code to users. Collaborate with me to integrate the update system seamlessly into my existing Python code. Required Skills & Experience: Strong Python development ex...

    $103 (Avg Bid)
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    Se solicita alquiler de cuenta Wechat, con número de teléfono chino configurado con acceso a la API para enviar y recibir mensajes durante 1 o 2 meses. Debe estar configurado y verificado.

    $17 (Avg Bid)
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    I have a customer base of Wellness users some of which use Strava on their phone. With their consent I want to be able to access the Strava API to download their activity to my Zoho CRM instance and record all the activity in fields created in Zoho for this purpose. Freelancer requires knowledge of API data requests (Strava experience a plus but this is clearly documented) and knowledge of Zoho CRM for the setup and import of the data.

    $200 (Avg Bid)
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    I need a python script that can pass in prompt to OpenAI. To understand what is needed, imagine creating a landing page with more than 1000 words using ChatGPT. Where a series of prompts was entered manually. i.e a chat or conversation with ChatGPT. Now this inputs that were manually insert to ChatGPT are provided to you. And you are to create a script that can automatically create the landing page using the prompts and OpenAI API. I need a script that I can either put in the series of prompts as one prompt or loop through the prompts as an array of input. The output can be a sub text that I can combine to form the landing page in question or the complete landing page. When creating the sub text from the series of prompts, OpenAI should see the individual prompts and outputs as a chain of ...

    $154 (Avg Bid)
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    Seeking a Python programmer to develop a script (that I can paste into Jupyter with my existing LSEG access and API key) to retrieve the historical issuer-level credit ratings for every American firm rated by Moody's and/or Fitch for the 20 years ending 2023-12-31, as at the end of each calendar month. Key Requirements: - Long-term issuer-level credit ratings from Moody's and/or Fitch (my LSEG subscription doesn't include S&P). - As at the end of each month from 2003-01-31 to 2023-12-31. Refinitiv returns rating changes, so where a rating is unchanged (i.e., not reported in a particular month) forward-filled from the most recent rating change event. - Formatted with the following columns: TICKER, COMMON NAME, CUSIP, MOODY's RATING, FITCH RATING, DATE (YYYY-MM-DD)....

    $326 (Avg Bid)
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    87 bud
    Node.js Runtime Error Resolution 18 timmar left
    VERIFIERAD

    Hello, I'm experiencing a network error in the server-side script of my Node.js project, specifically in handling API requests. I'm looking for a skilled and experienced developer who can troubleshoot and fix this issue. cause: Error: connect ETIMEDOUT at [as oncomplete] (node:net:1278:16) { errno: -4039, code: 'ETIMEDOUT', syscall: 'connect', address: '', port: 443 } If you have fixed such issue before then please contact me. Thanks

    $10 / hr (Avg Bid)
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    34 bud
    Wordpress and Traccar 6 timmar left
    VERIFIERAD

    I have a Wordpress built with ACF which should send via API information to Traccar GPS platform, like: - create/modify/delete device - change group settings And then I need to send data from Traccar to WP, like: - send odometer - create CPT and update information

    $131 (Avg Bid)
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    Javascript Interface redesign Company configuration and onboarding system Authentication Open AI integration with WhatsApp and existing ticket system. Telegram, Facebook, Instagram integrations with ticket system and OpenAI agent. Quick responses integration with aforementioned social media and messaging platforms Contacts integration with aforementioned social media and messaging platforms Agents-related features. (Management of Agent accounts, rating) Internal Chat Analytics / Dashboard metrics Schedules PABX setup and integration Billing setup for application instance. Testing, fixes, fine tuning.

    $602 (Avg Bid)
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    ----- this is a project for freelancers only, i'm not looking for a companies. please state that you're a freelancer at the top or your offer ------ ----- please specify your experience with OPENAI API and Python ----- I need to develop a project for matchmaking between real estate brokers (seller and buyers) this project need to be implemented using Python and OPENAI API the project requirements can be found here:

    $1443 (Avg Bid)
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    Explicit Filtering Phase -- 2 Avslutades left
    VERIFIERAD

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

    $470 (Avg Bid)
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