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I need my existing [login to view URL] app wired up to an existing external REST API so it can securely fetch data, submit updates, handle authentication, and allow users to upload files. Most endpoints accept/return JSON, and uploads are sent as multipart/form-data — your code must handle both cleanly and reliably. Deliverables: A small, reusable, well-typed API client layer (e.g., /lib/api or similar) using fetch or Axios Authentication integration (bearer tokens / OAuth details provided). Requests should be signed correctly and handled consistently across the app Example usage: at least one working flow for: data retrieval data submission login/session handling file upload (multipart/form-data) Robust error handling (including loading + failure states) and a short README explaining patterns so I can extend them Important constraints: This is an integration task: do not redesign backend architecture or refactor the entire UI Keep changes focused and incremental, with clear commits If you’ve shipped [login to view URL] projects integrating with REST backends and have handled both JSON + multipart/form-data securely, please share relevant examples. We’ll start with a small paid test task.
Projektin tunnus (ID): 40234960
270 ehdotukset
Etäprojekti
Aktiivinen 20 päivää sitten
Aseta budjettisi ja aikataulu
Saa maksu työstäsi
Kuvaile ehdotustasi
Rekisteröinti ja töihin tarjoaminen on ilmaista
270 freelancerit tarjoavat keskimäärin €16 EUR/tunti tätä projektia

Hello, I came across your project and found it truly interesting. With over eight years of hands-on experience in this field, I have successfully delivered high-quality solutions to clients worldwide. My dedication to excellence is reflected in the 180+ positive reviews from satisfied clients. I’d love to bring this expertise to your project and ensure outstanding results. However, I do have a few important points I’d like to clarify to align perfectly with your vision. Let’s connect via chat, where I can also share relevant examples of my past work. I'm looking forward to hearing back from you! Best Regards, Divu.
€12 EUR 40 päivässä
8,1
8,1

Hello Dear, I'm an experienced developer with over a decade of expertise. My goal is building a modern website that has a responsIve interface and structured layout with reusable code. I can deliver a seek site that attracts users and increases your business. Working with me, you will get best-solution that aligns with your requirements. Sincerely10
€12 EUR 20 päivässä
7,3
7,3

Hello, Thank you so much for posting this opportunity. It sounds like a great fit, and I’d love to be part of it! I’ve worked on similar projects before, and I’m confident I can bring real value to your project. I’m passionate about what I do and always aim to deliver work that’s not only high-quality but also makes things easier and smoother for my clients. Feel free to take a quick look at my profile to see some of the work I’ve done in the past. If it feels like a good match, I’d be happy to chat further about your project and how I can help bring it to life. I’m available to get started right away and will give this project my full attention from day one. Let’s connect and see how we can make this a success together! Looking forward to hearing from you soon. With Regards! Abhishek Saini
€15 EUR 40 päivässä
6,6
6,6

Hello Greetings, After reviewing your project description, I am confident and excited to work on this project for you. However, I have some crucial points and questions to clarify. Please leave a message in the chat to discuss this, and I can share my recent work that is similar to your requirements. Thanks for your time! I am excited to hear from you soon. Best regards,
€12 EUR 40 päivässä
6,0
6,0

Hello, Hope you're doing great! I am a PHP Developer who builds secure, fast, and business-focused web applications. I work with both custom PHP and frameworks, and always ensure that every project is optimized, scalable, and easy to maintain. What I Do 1. Custom web applications & business automation tools 2. API development and integration 3. Secure login, admin panels, and dashboard systems 4. High-speed, mobile-friendly websites 5. Migration, bug fixing, and performance upgrades Why Clients Prefer My Work 1. Clean folder structure & scalable architecture 2. Fully optimized and secure coding practices 3. Excellent communication & professional approac 4. Quick turnaround time with regular updates Ready to Start Share your requirements or preferred reference — I’ll analyze it and provide: 1. Best technical plan 2. Exact timeline 3. Budget estimate Looking forward to building something amazing for you!
€15 EUR 40 päivässä
5,2
5,2

Hi DublinArts, hope all is good. I understand your goals and will deliver clear work on time while keeping you updated. I am a skilled freelancer with 5+ years of experience in PHP, JavaScript, Web Development, Frontend Development and I have completed similar projects. Visit my profile to check my latest work and read short client reviews. Connect in chat to discuss details and next steps. Looking forward, Vasyl
€15 EUR 40 päivässä
4,3
4,3

Hello, I’ll build a small, well-typed API client under /lib/api that cleanly handles JSON and multipart/form-data, with a secure token-based auth flow aligned to your OAuth/bearer setup. The layer will expose reusable fetch/axios calls, typed responses, and a simple error/loading state model. I’ll deliver data retrieval, data submission, login/session handling, and file uploads with incremental commits. Best regards, Jeric Gonzales
€16 EUR 40 päivässä
3,6
3,6

Hi, I am professional full stack developer with skills including API Integration, OAuth, PHP, Frontend Development, REST API, Java, JSON, Web Development, JavaScript and Next.js. After reviewing the project requirements, I found the project perfectly match my experience and skills. Having previously worked on similar projects, I'm confident I can complete this project perfectly. To move forward, Please send a message to discuss more about this project. Looking forward to serve you
€16 EUR 26 päivässä
2,5
2,5

Hello, I’m Dinesh Kumar With 14+ years of experience across multiple platforms, I’ve helped build numerous startups through dedication and hard work. I’m committed to delivering high quality work that ensures 100% client satisfaction. Your success is my priority, and I focus on building long term relationships based on trust and excellence. Expertise: Web & App Development – React.js, Node.js, JavaScript, PHP, MySQL, WordPress, Magento, CodeIgniter, Shopify, .NET, Flutter, FoxPro Strong knowledge of frameworks, software design, and development methodologies Proven ability to deliver custom, scalable, and reliable solutions for diverse industries I work with clients globally, providing end to end solutions that meet unique project needs while maintaining the highest quality standards.
€15 EUR 40 päivässä
2,3
2,3

Throughout my career, I have gained proficiency in various technologies that will be beneficial for your project. From using secure authentication protocols like JWT and OAuth to optimizing databases for improved performance, I'm well-equipped to handle the tasks at hand. Moreover, my extensive experience in delivering clean, readable code combined with thorough documentation will ensure that this "wiring up" process doesn't disrupt or upgrade your existing backend architecture beyond your needs. This project falls right into the sweet spot of what makes me thrive as a developer. Being able to work on API-driven systems and integrating them seamlessly with modern frontend frameworks is what I truly enjoy doing. As we collaborate closely to achieve your project goals, you can expect clear and professional communication from me, meeting deadlines and continuous support even after completion. Why settle for someone who can simply do the job when you can have a seasoned professional who has made these integrations into art? Let's join hands to build a future-proof solution!
€15 EUR 40 päivässä
1,1
1,1

Hello, Greetings! I’m a senior full-stack developer with 6+ years of experience in building scalable mobile and web applications. I specialize in cross-platform and native mobile development using Flutter, React Native, Swift (iOS), and Kotlin/Java (Android), along with strong backend expertise in Node.js, Django, FastAPI, and Laravel, supported by modern cloud technologies. My team and I build end-to-end mobile solutions including custom dashboards, internal tools, automation systems, role-based platforms, secure APIs, real-time features, payment integrations, push notifications, and complete app store deployments. We focus on creating smooth user experiences, clean architecture, and reliable performance. We’ve worked on numerous mobile projects with different requirements and complexities, helping clients turn their ideas into well-designed, high-performing applications. Your project aligns well with our technical skills and development approach. I’d be happy to discuss your project scope, ideas, and goals, and suggest the best technical approach. Best regards, Suman Joshi
€15 EUR 40 päivässä
0,0
0,0

AI Automation Engineer with 9+ years building intelligent solutions for Philippine enterprises. Currently at Senti AI (Kollab) specializing in voice AI agents, multi-agent systems, and workflow automation using Vapi, n8n, and OpenAI. Previously developed full-stack applications at Symph and IoT-integrated systems at WiredField Philippines. Expert in conversational AI, real-time data pipelines, and API integrations. Proven track record delivering scalable web applications using React, Django, Node.js
€12 EUR 40 päivässä
0,0
0,0

I am a freelancer working in Dubai and provide service globally. We have a powerful portfolio where we have the projects which looks similar to your requirement. So, I can successfully convert your idea to the code. Feel free to contact if you want to know more. Bye bye...
€15 EUR 40 päivässä
0,0
0,0

I have worked with Next Js, React Js, Express Js and NodeJs and implemented many features from 0. I would like to help you with your applications!
€21 EUR 20 päivässä
0,0
0,0

Dublin, Ireland
Maksutapa vahvistettu
Liittynyt tammik. 18, 2023
€250-750 EUR
€12-18 EUR/ tunnissa
€1500-3000 EUR
€250-750 EUR
€10000-20000 EUR
₹12500-37500 INR
$15-25 USD/ tunnissa
$15-25 USD/ tunnissa
₹12500-37500 INR
€30-250 EUR
$750-1500 USD
₹12500-37500 INR
$250-750 USD
₹12500-37500 INR
€30-250 EUR
₹1500-12500 INR
₹600-1500 INR
$250-750 USD
$750-1500 USD
$15-25 USD/ tunnissa
$30-250 USD
₹200-400 INR/ tunnissa
₹12500-37500 INR
$30-250 USD
₹600-1500 INR