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We are looking for a Senior Developer with experience in Node.js, OpenAI API, and vector databases to finalize an AI chatbot. The chatbot is hosted on our VPS (Ubuntu), and the backend is already functional, connecting to MySQL for conversation history and Qdrant for RAG (Retrieval Augmented Generation) functionality. The main objective is to fix a critical bug and implement significant improvements within an estimated timeframe of 10 to 15 days. TASKS TO PERFORM: 1. Fix Error 400 (Token Limit): The [login to view URL] file currently sends the entire MySQL history to the OpenAI API, causing the API to crash due to the token limit. A history management strategy is required, such as a sliding window (e.g., keeping the first message and the last 8 messages) or an active conversation summary. 2. Prompt and Temperature Adjustment: In [login to view URL], it's necessary to increase the temperature (to a value between 0.4 and 0.5) and adjust the prompt so that the chatbot generates shorter responses, avoids "walls of text," and encourages a Socratic dialogue. The chatbot should also be allowed to provide practical examples when relevant. 3. Implementing WhatsApp Notifications: Create a Cron Job in Node.js that reads the MySQL database to identify inactive users. This Cron Job should then send a one-way reminder to these users, integrating the Twilio API or using a Webhook through tools like Make or Zapier. 4. Webhook Validation: Verify and ensure that users created after making a purchase in WooCommerce are correctly registered on the corresponding subdomain's WordPress site. REQUIREMENTS: * Demonstrable experience in Node.js development. * In-depth knowledge and experience using the OpenAI API. * Experience with vector databases, preferably Qdrant. * Familiarity with Linux server administration (Ubuntu). * Ability to work independently and meet deadlines. What we deliver: * Full access to the VPS hosting the chatbot. * Full access to the databases (MySQL and Qdrant). * Access to the project's current source code, which is clean and structured.
ID Projek: 40355309
125 cadangan
Projek jarak jauh
Aktif 4 hari yang lalu
Tetapkan bajet dan garis masa anda
Dapatkan bayaran untuk kerja anda
Tuliskan cadangan anda
Ianya percuma untuk mendaftar dan membida pekerjaan
125 pekerja bebas membida secara purata $55 USD untuk pekerjaan ini

Hi there, I read your bug-fix and feature brief and I’m confident I can finish this on a clean, Azure-grade Linux VPS with a tight 10-15 day window. I’m Asad, a Node.js and OpenAI specialist with hands-on experience in vector databases (Qdrant), MySQL-backed chat histories, and robust WordPress/WooCommerce webhook flows. I’ll implement: a sliding-window or summarized history strategy to fix the 400 token limit, a quieter, Socratic prompt with higher temperature (0.4-0.5) to encourage concise, practical replies, and short examples when relevant; a Node.js Cron job to notify inactive users via Twilio or webhooks; and a webhook validation workflow ensuring users created post-purchase are correctly registered on the subdomain. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I’ll coordinate changes in small, testable steps and keep you fully informed, with clear milestones and rollback safety. What is the preferred mechanism and cadence for the inactivity notifications (Twilio SMS vs Webhook-based reminders) and what would you consider a “successful” webhook validation outcome for WooCommerce post-purchase users on the subdomain? Looking forward to your reply so we can finalize the exact plan.
$40 USD dalam 1 hari
7.3
7.3

Hi, I can finalize your AI chatbot by fixing the token-limit error, implementing a sliding window or summary for MySQL history, adjusting prompts and temperature for concise Socratic responses, and setting up WhatsApp notifications for inactive users via Twilio. I will also verify WooCommerce webhooks for proper user registration. With full VPS, MySQL, and Qdrant access, I’ll deliver clean, tested Node.js code. The budget and timeline of the project can be discussed further to align with your expectations. Regards, Harpreet Singh
$35 USD dalam 6 hari
6.9
6.9

Hi. I have strong experience building and maintaining AI chatbots using Node.js, OpenAI APIs, and vector databases like Qdrant. I can quickly identify and fix bugs in your existing codebase while also implementing the new features you need. My approach is clean, well-documented code with clear communication throughout the project. I am comfortable working within your budget and can begin immediately after a brief onboarding call to understand the full scope. Looking forward to helping you improve your chatbot and deliver a reliable, production-ready solution.
$35 USD dalam 1 hari
6.5
6.5

With an expansive portfolio of Python and Django applications, STR Softwares LLP - Elite Python Development Team, led by myself, Nitin Prakash, has the necessary proficiency to quickly diagnose and remedy the 'Bug Error 400' that your AI chatbot is currently experiencing. Our team's skills in MySQL and Node.js are extensive and well-documented. Similarly, we have substantial experience with the OpenAI API which will be pivotal in implementing the "Prompt and Temperature Adjustment" necessary for generating better responses. WhatsApp integration is a task that aligns perfectly with our E-commerce Integration expertise. We can swiftly develop a Cron Job to send reminders to inactive users. Our Web Development skills come into play as we validate new users created after purchasing via WooCommerce on corresponding subdomains using WordPress. Thankfully, we're also familiar with Linux server administration which will aid us in managing your VPS running Ubuntu effectively. STR Softwares LLP has always placed a premium on delivering quality code while maintaining swift delivery timescales. Our record speaks for itself; time management is our forte. I assure you that choosing us means selecting a versatile team of senior developers who will not only meet your project requirements but do so with integrity and precision. Let's get started on maximizing the potentials of your AI Chatbot!
$35 USD dalam 2 hari
5.2
5.2

I can help you. To resolve the 400 Error, I will implement a token-aware sliding window using the tiktoken library to precisely manage context limits rather than relying on a fixed message count. For the Socratic dialogue, I will refine the System Prompt with specific brevity constraints and adjust the temperature to prevent "wall-of-text" outputs. Regarding the WhatsApp notifications, I will ensure the Cron Job includes a "last_notified" state in MySQL to prevent duplicate spamming. For the WooCommerce webhook, the hidden issue in subdomain environments is often a REST API authentication handshake failure or restricted user-creation permissions; I will debug the payload delivery and ensure the cross-site registration logic is correctly handled.
$50 USD dalam 7 hari
4.8
4.8

Hi there! You are finalizing an AI chatbot and the real challenge is managing token limits and improving response quality while integrating notifications and webhooks—that is exactly where most Node.js + OpenAI setups hit performance bottlenecks. I recently optimized a Node.js chatbot using MySQL and Qdrant for RAG, implementing a sliding window history strategy, prompt tuning for concise Socratic-style responses, and automated notifications via Twilio, which reduced API errors and improved user engagement. My expertise with OpenAI API, Ubuntu servers, and vector databases ensures stable, scalable performance. I will fix the token-limit bug, adjust prompts and temperature for practical, concise answers, implement the WhatsApp Cron job, and validate WooCommerce webhooks so your chatbot runs smoothly. Check our work: https://www.freelancer.com/u/ayesha86664 Do you want the message reminders to include dynamic content from the RAG context or only static notifications? I am ready to start — just say the word. Best Regards, Ayesha
$20 USD dalam 12 hari
4.3
4.3

Hii there, I’m offering a 30 percent discount for this project and would be glad to assist you with bug fixes and new feature development for your AI chatbot built with Node.js, OpenAI, and Qdrant. With experience in full-stack JavaScript development and AI integrations, I can ensure your chatbot is stable, performant, and feature-rich. I will identify and resolve existing bugs, optimize API calls, and enhance Qdrant vector database integration for faster and more accurate responses. Additionally, I can implement new features such as improved conversation flows, context handling, analytics, or other functionalities you require, ensuring seamless performance and scalability. As a dedicated freelancer, I prioritize clean code, reliability, and clear communication. I am confident that I can enhance your AI chatbot efficiently while maintaining stability and improving its capabilities. Kind regards, Sohail Jamil
$20 USD dalam 1 hari
4.3
4.3

Hi, I am a full-stack AI developer with 8 years of rich experience with a background in Node.js chatbot systems and RAG pipelines. I am familiar with Node.js, OpenAI API, MySQL, Qdrant, Twilio. For this project, the most important part is fixing the history handling logic, because sending full conversation history to the OpenAI API breaks stability and directly affects the chatbot’s core flow. I will implement a proper context strategy, refine the prompt and response behavior, add the WhatsApp reminder workflow, and validate the WooCommerce to WordPress registration flow on your VPS. I'm an individual freelancer and can work on any time zone you want. Please contact me with the best time for you to have a quick chat. Looking forward to discussing more details. Thanks. Emile.
$250 USD dalam 7 hari
4.4
4.4

As a seasoned Node.js Backend Developer, I'm confident in my ability to tackle the tasks required to finalize your AI chatbot project. I have extensive experience not just with Node.js development and MySQL, but also with Linux server administration—in fact, I'm well-versed in Ubuntu, just like your VPS. This means I can swiftly fix the bug you've encountered (the Error 400) by effectively utilizing strategic history management techniques (e.g., sliding window or active conversation summary). Moreover, I have firsthand experience working with the OpenAI API which uniquely qualifies me to implement the improvements you need (such as adjusting prompt and temperature). I understand the criticality of generating concise and useful responses and would use my expertise to make your chatbot's dialogue effective, avoiding walls of text. Lastly, your request to integrate WhatsApp notifications into the chatbot requires robust back-end skillsets—something that's become second-nature to me across my career. I am confident in my ability (and compatible skillset) to create a Cron job using Node.js that can efficiently monitor inactive users on a MySQL database and send reminders accordingly via Twilio or Webhooks through Make or Zapier. My command of REST APIs and third-party API integrations assures you accomp
$50 USD dalam 7 hari
4.3
4.3

Hi there, Strong alignment with this project comes from experience optimizing AI chat systems using Node.js, OpenAI APIs, and vector databases like Qdrant in production environments. Clear understanding of the requirement to fix token overflow via context management, refine prompts for better responses, implement WhatsApp notifications via cron jobs, and validate WooCommerce–WordPress webhook flows. Hands-on expertise ensures efficient sliding-window or summarization strategies, prompt tuning, Twilio/webhook integrations, and stable deployment on Ubuntu VPS. Risk stays controlled through structured debugging, performance tuning, and safe handling of live systems. Available to start immediately happy to review codebase and outline fixes. Recent work: https://www.freelancer.com/u/chiragardeshna Regards Chirag
$35 USD dalam 1 hari
4.5
4.5

Hello, You need a Senior Developer with experience in Node.js, OpenAI API, and vector databases to finalize your AI chatbot and resolve some critical issues. I can fix the Error 400 (Token Limit) issue by implementing a history management strategy, adjust the temperature and prompt for better response quality, and implement WhatsApp notifications to remind inactive users using a Cron Job and Twilio API. Additionally, I’ll verify WooCommerce user registration via webhooks to ensure everything is synced and working smoothly. The result will be a fully functional chatbot with improved performance, reliability, and a smooth workflow that integrates all the required functionalities. If this sounds like a good fit, I can start by reviewing the source code and providing a clear plan before moving forward. Cheers, Hassan Suhail
$35 USD dalam 7 hari
4.2
4.2

Hello, I’ve carefully reviewed your project Bug Fixes and New Features in an AI Chatbot (Node.js + OpenAI + Qdrant) and it’s something I can confidently handle. I’m a professional developer with strong experience in AI Chatbot Development, MySQL, VPS, Vector Databases, Software Development, API Development, Backend Development, Node.js, OpenAI and Ubuntu, delivering reliable and high-quality solutions with clean code and efficient performance. I ensure every project is handled with attention to detail and a results-driven approach to meet your expectations. If you’ve shared any files or details, I’ll review them and provide quick feedback. Let’s connect and get started right away you can also check my profile reviews for similar work. Regards, Mahad Sheikh
$20 USD dalam 6 hari
3.8
3.8

I've worked with this exact stack -- Node.js + OpenAI API + vector DBs + MySQL. All four tasks are clear to me: 1. Token limit: sliding window on the MySQL history before sending to OpenAI. Keep system prompt + first message + last N messages. Clean fix, no architectural changes needed. 2. Prompt tuning: bump temperature to 0.4-0.5, tighten the system prompt for shorter Socratic responses with practical examples. Quick iteration. 3. WhatsApp reminders: Node cron job querying MySQL for inactive users, fire via Twilio API. Straightforward. 4. WooCommerce webhook: validate the user creation flow on the WordPress subdomain. Debug and fix. I can have all four done in 2 days. I work on Ubuntu VPS environments daily and I'm comfortable with Qdrant. Happy to start as soon as I get access.
$50 USD dalam 2 hari
3.7
3.7

Hi there, I’ve reviewed your project details for “Bug Fixes and New Features in an AI Chatbot (Node.js + OpenAI + Qdrant)” and found it quite interesting. I’d love to have a quick chat to discuss the project requirements and see how I can help. I’m available right now if that works for you. I bring 10+ years of experience working with PHP and modern web technologies, including Laravel, WordPress, WooCommerce, CakePHP, CodeIgniter, Magento, Shopify, along with Bootstrap, HTML, CSS, JavaScript, jQuery, Angular, and MySQL. I also have hands-on experience with design tools like Adobe Photoshop, Illustrator, and CorelDRAW, which helps in delivering well-rounded solutions. Looking forward to your response. Best regards, Muhammad Atif
$35 USD dalam 1 hari
3.6
3.6

? Hi there, I can step into your existing Node.js chatbot stack, fix the token-limit crash properly, refine the OpenAI prompt behavior for shorter and more useful replies, and implement the WhatsApp reminder flow plus webhook validation without disrupting the current backend structure. I’m comfortable working with Node.js, OpenAI API, MySQL, Qdrant, and Ubuntu VPS environments, and I can focus on practical production fixes like history windowing or summarization, cron-based inactivity detection, Twilio or webhook messaging, and end-to-end validation so the chatbot becomes stable and ready for real use. Regards, Carlos,
$450 USD dalam 10 hari
3.4
3.4

Hello! I'm excited about the opportunity to assist you in finalizing your AI chatbot project. I understand that you're seeking a Senior Developer to address a critical bug and implement enhancements within a tight timeframe. I have extensive experience in Node.js development and a strong background in integrating the OpenAI API. Additionally, I am well-versed in working with vector databases like Qdrant, and I have a solid grasp of Linux server administration on Ubuntu. To successfully complete the project, my approach will include: - Implementing a history management strategy to resolve the Error 400 issue, ensuring the OpenAI API operates smoothly without exceeding token limits. - Adjusting the temperature and prompt settings to generate concise responses, enhancing user engagement in a Socratic dialogue style. - Developing a Cron Job in Node.js for sending WhatsApp notifications to inactive users, integrating seamlessly with the Twilio API. - Validating user registrations created through WooCommerce to ensure proper integration with your WordPress site. I am eager to start this project and confident that I can deliver high-quality results within your specified timeline. Please feel free to reach out so we can discuss further details. Thank you for considering my proposal!
$20 USD dalam 7 hari
3.2
3.2

Hi, I recently reactivated my Freelancer profile and I’m currently available to take on new projects. I have 8+ years of experience in WordPress, Shopify, and web development, and I’ve previously delivered 5⭐ work to my clients. I can help you with this task quickly and efficiently, and I’m happy to offer a very competitive rate to build long-term relationships. Let’s get this done perfectly. Thanks
$20 USD dalam 5 hari
2.8
2.8

Hi, this is Jordan. I’ve reviewed your project and understand you need to stabilize and improve your existing AI chatbot (Node.js + OpenAI + Qdrant) running on Ubuntu, with focus on token limits, response quality, automation, and integrations. I have strong experience with OpenAI API, RAG pipelines, and vector databases (including Qdrant), and I’ve handled similar issues in production systems. **How I’ll approach this:** • **Fix Token Limit (400 error):** Implement sliding window + optional conversation summarization to control token usage efficiently. • **Prompt Optimization:** Adjust temperature (0.4–0.5) and refine prompts for concise, structured, and more interactive (Socratic-style) responses. • **WhatsApp Automation:** Build a Node.js cron job to detect inactive users and trigger reminders via Twilio or webhook (Make/Zapier). • **Webhook Validation:** Debug and ensure WooCommerce → WordPress user sync works reliably across subdomains. **Focus:** • Clean, maintainable code • Stable API behavior under load • Efficient token usage + improved UX I’m comfortable working directly on your VPS (Ubuntu) and integrating with your existing MySQL and Qdrant setup. Quick questions: 1. Preferred approach: summarization, sliding window, or hybrid? 2. Twilio already configured? 3. Any logs for the WooCommerce sync issue? Ready to start and deliver within your 10–15 day timeline. Regards, Jordan
$45 USD dalam 7 hari
2.6
2.6

Hello, the 400 token crash is not just a bug, it is a **conversation design flaw** that will keep breaking as usage grows. Fixing it properly + tightening response quality is where I can help. I have worked on Node + OpenAI + RAG stacks (with vector DBs like Qdrant), and the key is **controlled context + predictable output behavior**, not just patching code. Here is how I will approach: 1. Implement sliding window + dynamic summarization layer (to avoid token overflow permanently) 2. Optimize prompt + temperature for concise, Socratic responses (no long dumps) 3. Add inactivity Cron with Twilio/Webhook fallback handling 4. Validate WooCommerce → WP user sync with webhook tracing I am comfortable with Ubuntu VPS, MySQL pipelines, and debugging live systems. One critical question: are you currently storing embeddings per message or per session in Qdrant? This impacts how we safely trim history without breaking RAG relevance. Regards VK
$35 USD dalam 7 hari
2.6
2.6

✨✨✨✨✨Hi, I can start working right now. I’ve successfully handled similar chatbot and Node.js projects involving bug fixes, API enhancements, and feature development, so I fully understand your requirement to resolve functionality issues, improve integrations, and enhance overall performance. I work with professionalism and responsibility, ensuring clean debugging, stable fixes, and well-structured feature implementation to take your project to the next level. () Let’s connect via chat to discuss the project requirements further. Regards,
$35 USD dalam 7 hari
2.3
2.3

Kings County, United States
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Ahli sejak Nov 16, 2020
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