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We have a nearly complete automation system built for a fitness business. The system uses: - [login to view URL] (all flows + integrations) - WATI for WhatsApp - ManyChat for Instagram - Node.js backend - OpenAI Assistants API - GymMaster API - Google Sheets for storage The system basically works, but it is not stable - there are recurring bugs, crashes, and inconsistencies that need to be fixed. We need a strong developer to take over, stabilise everything, and finish the remaining logic. This is not a rebuild. This is a takeover + bug fix + stabilisation project. Your Responsibilities You will: - Audit all [login to view URL] scenarios + modules - Fix failing webhooks, filters, and Assistant calls - Stop scenario crashes (400 errors, invalid events, story replies, etc.) - Ensure the system always returns stable responses - Finalise reminders + review follow-up logic in [login to view URL] - Sync GymMaster bookings reliably - Improve error handling + filtering - Migrate the Instagram flow from ManyChat → WATI - Test everything end-to-end and deliver a stable production system Goal: A clean, reliable automation system that never breaks. Required Skills You must have strong experience with: - [login to view URL] (advanced level) – routers, filters, webhooks, error handling - WATI API + webhooks - Node.js (modify existing backend logic, not rebuild) - Debugging and repairing systems built by other developers - API integrations & JSON troubleshooting - Chatbot logic Goal: complete stabilisation quickly and efficiently To Apply - Answer These Questions - What experience do you have with [login to view URL], specifically with routers, filters, and complex webhooks? - Have you taken over systems built by other developers? - Are you comfortable modifying a Node.js backend? - Send examples of previous automation or integration work. Notes - We don't need a rebuild. - We need someone who can debug, stabilise, and finish the system so it performs reliably under real user behaviour. If you can take over and deliver quickly, we want to work with you.
Proje No: 40060211
49 teklifler
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49 freelancer bu proje için ortalama $440 USD teklif veriyor

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ===>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
$255 USD 5 gün içinde
4,7
4,7

Hi there, From your description, this looks like the kind of backend / API builds where a expert senior engineer approach actually matters. Here’s how I’d approach it: Given your focus on Debugging, Node.js, Backend Development, I’ll align the approach with that stack instead of forcing new tools onto the project. • Add basic logging and error handling so issues surface early instead of in production. • Build endpoints in a tidy, predictable way so behaviour is easy to test and reason about. We can also start with a small initial slice so you can see the quality before we run the full project. If this feels aligned with what you’re aiming for, I’d be glad to take this forward. Best regards, Duncan.
$320 USD 7 gün içinde
2,5
2,5

I can deliver system stabilisation and bug fixes with precision — on time, on budget, and with excellence. Can you clarify if there are any specific error codes associated with the recurring crashes that need to be addressed for stability? I bring years of proven experience delivering Digital Product Development, Custom App & Website Development, and AI-Powered Automation/Agents for both corporate clients and startups. Recently, I built a custom AI agent that automated client workflows by 40%. If this sounds aligned, let’s connect and map out the next steps. Regards, Brad Wilson
$450 USD 5 gün içinde
0,0
0,0

Dear sir/madam, I am offering my services on short notice. Relevant Skills and Experience Please consider me and give me a chance to impress you by my quality services
$500 USD 7 gün içinde
0,0
0,0

I can help you develop a clear and engaging solution that supports what you want to achieve with stabilising your fitness automation system. Your project calls for workflow debugging, API connection checks, logic validation, data consistency, error handling, and performance refinement so the automation runs reliably. These elements work best when approached with clarity so the system feels stable, predictable, and easy to maintain as usage scales. Once I see your current setup, we can shape the path that fits your vision best. Cheers, Lance
$300 USD 7 gün içinde
0,0
0,0

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