
Đã hoàn thành
Đã đăng vào
Thanh toán khi bàn giao
Description: We are looking for an experienced developer to integrate an API into our web application. The front-end is under development, and we want to connect the interfaces to back-end services via the API. Required Skills: Strong experience with REST or GraphQL API integrations Experience with [specify framework or language, e.g., React, Vue, Angular, PHP, Node.js] Good understanding of JSON exchanges and error handling Ability to collaborate with the front-end team and meet deadlines Project Details: Delivery deadlines will be specified during the meeting Expected Deliverables: Complete API integration with the front-end Brief documentation on the integration for future maintenance Functional testing to ensure proper operation Please specify in your application: Your experience with similar API integrations Your availability and estimated timeline for the project
Mã dự án: 40246883
250 đề xuất
Dự án từ xa
Hoạt động 22 ngày trước
Thiết lập ngân sách và thời gian
Nhận thanh toán cho công việc
Phác thảo đề xuất của bạn
Miễn phí đăng ký và cháo giá cho công việc
250 freelancer chào giá trung bình $467 USD cho công việc này

⭐⭐⭐⭐⭐ Dear Valuable Client, CnELIndia, led by Raman Ladhani, brings extensive experience in API integration and front-end/back-end connectivity. We specialize in REST and GraphQL API integrations across PHP, Node.js, and modern JavaScript frameworks, ensuring seamless JSON data exchanges and robust error handling. Our team collaborates closely with front-end developers to align interfaces with back-end services and deliver functional, maintainable solutions on schedule. For your project, we propose: Reviewing existing front-end architecture to plan API endpoints integration. Implementing and testing API connections with proper error handling. Conducting end-to-end functional testing to ensure reliability. Delivering concise documentation for future maintenance. Our prior projects demonstrate successful API integration under tight timelines. We can start immediately and will provide an estimated completion timeline after reviewing your front-end setup. We are confident in delivering a fully integrated, tested, and documented solution.
$500 USD trong 7 ngày
9,1
9,1

Hi there! I’m Muhammad Awais and I’m ready to wire your web app to the backend via a solid API integration. I’ll start by understanding your API specs (REST or GraphQL), map the data contracts to the front-end needs, and build reliable adapters that handle JSON exchanges and errors gracefully. I’ll coordinate with your front-end team to ensure smooth integration, implement authentication if required, and set up clean, light-weight documentation for future maintenance. I’ll also run functional tests to verify end-to-end flow and provide a brief integration guide for your team. What is the primary API authentication method and expected rate limits for the integration?
$750 USD trong 28 ngày
8,8
8,8

Hello, I understand you need a skilled developer to integrate APIs (REST/GraphQL) into your web application, ensuring smooth front-end and back-end communication. I will handle complete API integration, error handling, JSON exchanges, and provide brief documentation for future maintenance. With 10+ years of experience working on complex API integrations across frameworks like React, Node.js, and PHP, I’ve delivered reliable, well-tested solutions. Let’s connect in chat to discuss your timeline, project specifics, and next steps. thank you Regards Gaurav Garg
$250 USD trong 7 ngày
8,6
8,6

Hi there, I specialize in REST/GraphQL API integrations with 8+ years in React front-ends and Node.js back-ends, handling JSON exchanges, robust error handling, and team collaboration. I'll deliver seamless front-end connections, full testing, and maintenance docs on time. Available for a call to align on deadlines. Thanks, Singh
$350 USD trong 7 ngày
8,3
8,3

API EXPERT is here to achieve your given goals——————I have extensive expereince with similar project. I am API/Full stack developer having expereince with so many technologies.I will deliver you high Quality work. Thanks!
$450 USD trong 7 ngày
8,2
8,2

As an experienced developer with over 12 years in the field, I possess a strong track record in API integrations, specifically REST and GraphQL. My expertise extends to various frameworks and languages like Node.js, React.js,\\ and PHP, which aligns perfectly with your project needs. My focus on robust JSON exchanges and meticulous error handling ensures smooth integration and proper operation of the application. Moreover, having worked extensively on healthcare projects among other domains such as NFTs, Fintech, and Supply Chain management, I understand the unique challenges and requirements that come with healthcare solutions. My thorough knowledge of the health industry will enable me to successfully execute your vision within agreed timelines. Lastly, my availability of minimum 40 hours per week and familiarity with various project management tools will ensure efficient collaboration with your front-end team, adhering to strict deadlines. Thanks.....
$750 USD trong 7 ngày
8,2
8,2

Hi there, I’m ready to start immediately and will integrate the API into your web application. I have solid experience with REST API integrations and have successfully connected back-end services to front-end interfaces in previous projects. I will ensure proper documentation for future maintenance and conduct functional testing to confirm everything works as expected. Could you clarify which specific API you are looking to integrate? Regards, Burhan Ahmad
$500 USD trong 5 ngày
8,4
8,4

Hi, I have integrated multiple APIs into websites and web applications. I can work with your design team to complete this. Thank you Rohit
$300 USD trong 7 ngày
7,9
7,9

Hello, I can handle the full API integration for your web application, ensuring clean communication between the front-end and back-end services. I have strong experience integrating REST and GraphQL APIs within modern stacks (React, Vue, Node.js, PHP), with structured handling of JSON payloads, authentication flows, and robust error management. I focus on clean service layers, reusable API utilities, and proper validation so the integration remains maintainable and scalable. I collaborate closely with front-end teams to align on data contracts, edge cases, and performance expectations. You will receive fully connected interfaces, functional testing to confirm stability, and concise documentation outlining endpoints, request/response structures, and error handling logic. The Bid amount is subject to change and will be finalized after a complete project discussion. I am available to begin immediately and can align timeline once scope details are confirmed. Regards, Smile Mittal
$250 USD trong 5 ngày
8,1
8,1

Hello I hope you are well. I will help you integrate your API seamlessly into your web application, connecting the front-end to back-end services with clean, reliable code that handles JSON exchanges, errors, and edge cases efficiently. I have strong experience with REST and GraphQL integrations across frameworks like React, Vue, Angular, Node.js, and PHP, and I ensure smooth collaboration with front-end teams to meet deadlines without delays. The integration will include thorough testing, clear documentation for future maintenance, and a stable connection so your application functions flawlessly. Let us discuss your timeline and requirements so I can deliver a fully functional API integration that works from day one. Discover my professional portfolio: https://www.freelancer.com/u/Hammadhassan21 If my offer meets your expectations, we would be happy to discuss your project in more detail. Best Regards, Hammad Hassan
$500 USD trong 7 ngày
7,8
7,8

⭐⭐⭐⭐⭐ API Integration for Your Web Application Made Easy ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project needs and see you are looking for an experienced developer for API integration. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed 50+ similar projects focused on API integrations. I will work closely with your front-end team to connect the interfaces to back-end services, ensuring a smooth and efficient process. ➡️ Why Me? I can easily handle your API integration as I have 5 years of experience in REST and GraphQL API integrations, working with frameworks like React and Node.js. My expertise includes JSON exchanges, error handling, and collaborating effectively with teams to meet deadlines. I also have a strong grip on testing and documentation, which will add value to your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I'm looking forward to discussing this with you! ➡️ Skills & Experience: ✅ API Integration ✅ REST & GraphQL ✅ React ✅ Node.js ✅ JSON Handling ✅ Error Handling ✅ Front-end Collaboration ✅ Functional Testing ✅ Documentation ✅ Project Management ✅ Time Management ✅ Teamwork Waiting for your response! Best Regards, Zohaib
$350 USD trong 2 ngày
7,7
7,7

Hi, I am experienced in connecting front-end interfaces with REST/GraphQL APIs and handling JSON data, validation and error cases properly. I can work closely with your front-end team to integrate the endpoints cleanly and keep everything stable. I’ll also test all flows and provide short documentation so future updates are easy. I’m available to start right away and can share a clear timeline after reviewing the API details. Timeline will be determined following a thorough conversation discussion. I'm available right now to talk about the specifications so that I can go to work right away. With you, I hope to establish a long-term commercial connection. With gratitude and best wishes, Harpreet Singh
$250 USD trong 7 ngày
7,9
7,9

Hello, I HAVE CREATED SIMILAR APPS BEFORE AND I CAN SHOW YOU I am an experienced developer with 10+ years of hands-on expertise in API integrations using REST/GraphQL, working with modern front-end frameworks and robust back-end services. I can efficiently connect your front-end interfaces with back-end APIs, ensuring clean JSON exchanges, proper error handling, and smooth collaboration with your front-end team. I have delivered similar integrations across multiple projects and can share relevant examples. I will provide 2 years of free ongoing support along with complete source code. We will follow an Agile methodology, keeping you updated at every stage, and I will assist you from zero to final deployment/publishing as required. Clear documentation and functional testing will be included to ensure long-term maintainability. I am available to start immediately and can align with your deadlines after discussion. I eagerly await your positive response. Thanks
$500 USD trong 7 ngày
7,8
7,8

With over a decade of experience in custom web and mobile application development, WellSpring Infotech is the ideal partner for your API integration project. We've successfully implemented numerous REST and GraphQL API integrations and have a strong grasp of JSON exchanges and error handling. Additionally, we're well-versed in an array of frameworks and languages, including React, Vue, Node.js, PHP – all the skills required for your project. Our extensive portfolio demonstrates our capabilities across various industries including healthcare – similar to your niche. This gives us an added advantage as we can easily comprehend the complexities and nuances associated with integrating APIs specific to this sector. Meeting deadlines collaboratively is second nature to us, ensuring you're consistently informed about project progress and milestones. Hiring WellSpring Infotech will not only mean seamless integration between your front-end interfaces and back-end services but also confidence in the quality of our deliverables. We don't just provide outputs; we create solutions that accelerate growth and improve profitability. In addition to delivering a fully functioning API integration, we'll provide you with detailed documentation for future maintenance and ensure thorough functional testing to guarantee safe operation at all levels. Thanks....
$750 USD trong 7 ngày
8,0
8,0

Hello, Can you please share more details about the APIs that needs to be integrated, also can you please share the frontend, so I can get the idea about the work. I have done several such kind of projects. I am available to start the work immediately. Can we discuss further. Regards
$400 USD trong 7 ngày
7,1
7,1

Greetings, I see that you're looking for an experienced developer to integrate an API into your healthcare web application. This involves connecting the front-end, currently in development, to back-end services through the API. My approach would be to first analyze the existing front-end structure and then implement a seamless integration using REST or GraphQL, ensuring efficient data exchange while handling any errors that may arise. With a solid background in PHP and experience working with various frameworks, I’ve successfully completed similar API integrations in the past. I’m comfortable collaborating with front-end teams to ensure smooth communication and timely delivery of the project. Additionally, I will provide brief documentation to assist with future maintenance and conduct functional testing to verify everything operates correctly. Best regards, Saba Ehsan
$350 USD trong 4 ngày
6,9
6,9

Hi, I have solid experience integrating both REST and GraphQL APIs into React and Node.js applications, including authentication flows, error handling, and structured JSON data management. I’ve worked closely with front-end teams to connect UI components cleanly to backend services while keeping the code maintainable and well-documented. My approach is to first review the API structure and frontend architecture, define clear data contracts, implement robust error handling, and ensure proper testing before final delivery. I also provide concise documentation so future updates are straightforward. I’m available to start immediately. Timeline depends on scope, but most API integrations of this type take 3–7 days. Happy to discuss details and give a precise estimate after reviewing the requirements.
$500 USD trong 7 ngày
7,1
7,1

With my expansive range of skills and extensive experience in website development, mobile app engineering, and even creative design, I would not only be an excellent fit for your API integration project but a valuable addition to your team.
$500 USD trong 9 ngày
7,1
7,1

Hi there, I’m excited to help you securely connect your healthcare web application to your backend services through a clean, robust API integration. With extensive experience integrating REST and GraphQL APIs across React, Node.js, and similar stacks, I’ve delivered resilient data flows, precise JSON handling, and clear error management that keeps front-end and back-end teams in perfect sync. ★ Why I’m a strong fit for this project - Proven track record integrating REST/GraphQL APIs with modern front-ends (React, Vue, Angular) and back-end services (Node.js, PHP/Laravel, .NET). - Deep understanding of JSON exchanges, API versioning, error handling, retry strategies, and secure data transfer in healthcare contexts. - Strong collaboration with front-end teams to align on contract design, data models, and UI requirements to meet deadlines. - Documentation skills to provide concise integration guides and change logs for future maintenance. ★ Proposed approach 1) API contract analysis: review endpoints, authentication, rate limits, and sample payloads with your front-end team. 2) Implementation: integrate endpoints into the front-end proxy or service layer, ensure robust error handling, and align data shapes with UI needs. 3) Validation & testing: unit and integration tests, simulate real-world scenarios, and perform end-to-end checks with the front-end. 4) Documentation: publish a concise integration guide, including error codes, data mappings, and troubleshooting steps. 5) Ha
$400 USD trong 4 ngày
6,7
6,7

Hello, I’m pleased to submit my application for the API integration project. I have extensive experience integrating RESTful and GraphQL APIs into modern web applications, ensuring seamless communication between front-end interfaces and back-end services. In previous projects, I’ve worked with React and Vue on the front end and Node.js and PHP (Laravel) on the back end. My responsibilities included authentication flows (JWT/OAuth), handling complex JSON payloads, implementing robust error handling, managing async state, and optimising API performance. I also ensure clean abstraction layers for maintainability and scalability. For your project, I would begin by reviewing the API documentation and front-end architecture to define clear integration points. I focus on structured request handling, centralised error management, loading states, and fallback strategies to ensure a smooth user experience. I also conduct functional testing to validate data consistency, edge cases, and error scenarios. Deliverables will include: Complete and clean API integration with the front-end Well-structured service layer for maintainability Brief technical documentation outlining endpoints, authentication flow, and environment configuration Functional testing to confirm stability and reliability Availability: I can start immediately. Estimated timeline: Depending on API complexity, typically 1–3 weeks for full integration and testing. Best regards,
$600 USD trong 10 ngày
6,7
6,7

Nola, Central African Republic
Phương thức thanh toán đã xác thực
Thành viên từ thg 8 9, 2024
$500-900 USD
$250-750 USD
$1500-3000 USD
$250-750 USD
$250-750 USD
₹12500-37500 INR
$2-8 USD/ giờ
$10-30 USD
$30-250 USD
$2-8 USD/ giờ
$30-250 AUD
$1500-3000 USD
$300 USD
$250-750 USD
₹1500-12500 INR
$30-250 CAD
$10-30 USD
$750-1500 USD
$30-250 CAD
₹2000-5000 INR
₹600-1500 INR
€300 EUR
₹600-1500 INR
₹1500-12500 INR
€250-750 EUR