Full Stack Dev Needed: Repair Firecrawl.dev, and Serper.dev Logic and AI Calling Module

@corpmember29

HELLO, I have reviewed your project requirements and understand the need to audit, fix, and complete the backend AI calling flow, API logic, and payment gating for your lead generation platform. I have 10+ years of full-stack development experience, including API integration, AI/telephony systems (Twilio, ElevenLabs), payment flows (Stripe), and SaaS platforms. I can: Fix the AI calling handshake and ensure JSON responses are consistent. Implement phone number capture with optional payment gating. Wire the Lovable frontend correctly to backend logic. Audit the existing system for scalability, security, and reliability. I will provide 2 years of free ongoing support and complete source code, following Agile methodology, and assist from debugging to full deployment. My goal is to ensure the platform works end-to-end: User -> Input/Payment -> API -> AI Call -> Response, cleanly and reliably. I eagerly await your positive response. Thanks

@santoshkumars17

As a seasoned Full Stack Developer with over 5 years of industry experience, I believe I have the skills and expertise that you're looking for to fix, optimize and complete your AI-powered lead generation platform. My diversified skillset includes frontend and backend development, API design and debugging, precisely the skills you need to make sure your system works flawlessly end-to-end. I've successfully integrated payment flow in numerous projects using Stripe and other similar platforms. I am also experienced with AI calling/telephony APIs such as Twilio, thus fixing the broken AI calling flow and API handshake logic would be second nature to me. My comfort level with no-code/low-code tools like Lovable is another added value that'll ensure the efficient wiring up of your frontend UI to backend logic. In addition to my technical expertise, I bring a strong sense of commitment and responsibility which has allowed me to consistently deliver not only optimized and scalable code but also timely results. Your project aligns perfectly with my strengths and interests, making us an ideal match. Let's join forces to fix, streamline and scale your platform for optimized performance and growth!

@arbu1499

Hi! I’m an experienced full-stack developer with deep expertise in API design, telephony integrations (Twilio, ElevenLabs), and payment flow implementation (Stripe). I understand how critical a smooth AI calling flow and consistent backend API handshake are for your lead generation platform. I’ll audit your current Lovable frontend and backend, fix broken JSON responses, implement phone number gating and payment logic, and wire the AI calling end-to-end so it’s reliable and scalable from day one. I’m comfortable debugging partial builds and working closely to get this startup-ready quickly and cleanly. Looking forward for your positive response in the chatbox. Best Regards, Arbaz T

@SmartCodeDev

Hello, I’m a senior full-stack developer with experience fixing and completing partially built SaaS systems, especially around API integrations, payment gating, and AI/telephony workflows. I can audit your current setup, fix the broken API responses, implement clean phone number + payment logic, and correctly wire the AI calling flow end-to-end. I’ve worked with Stripe, JSON APIs, and no-code/low-code frontends before, and I’m comfortable stabilizing early-stage products. Ready to review the existing code and get the system working in production quickly.

@fizaa170

Hi, I can help you fix this. I work as a full-stack developer and I’m used to stepping into half-built systems and making them actually work end-to-end. I’ll review your Lovable frontend and backend APIs, fix the broken JSON responses, and correctly wire the phone-number / payment gating logic. I also have experience with AI calling APIs and can make sure the outbound call flow triggers reliably and returns the right responses. My focus will be stability and simplicity—no overengineering, just a clean working flow from user input to AI call and back. Happy to start with a quick audit and explain what’s broken before fixing it.

@rajeshrolen

Hello, I would like to grab this opportunity and will work until you are 100% satisfied with my work. I am an experienced professional with many years of hands-on experience in Google Maps API, Full Stack Development, API Development, API Integration, API Testing, AI Chatbot Development, AI Development Let’s connect in chat so that we can discuss further. Regards, Rajesh Rolen

@rohan3188

Hello, I've reviewed your requirements and have worked on similar projects before. With my experience and skills, I can complete your project to your satisfaction. Please contact me via chat to discuss the details. Thank you.

@dataspro

Nice to meet you , It is a pleasure to communicate with you. My name is Anthony Muñoz, I am the lead engineer for DSPro IT agency and I would like to offer you my professional services. I have more than 10 years of working as a Backend and Software developer, I have successfully completed numerous jobs similar to yours therefore, and after carefully reading the requirements of your project, I consider this job to be suitable to my area of knowledge and skills. I would love to work together to make this project a reality. I greatly appreciate the time provided and I remain pending for any questions or comments. Feel free to contact me. Greetings

@CANWS

Hi I specialize in auditing and fixing partially-built AI SaaS platforms and wiring them to production-ready systems. ✅I can quickly: Audit your current backend + Lovable integration Fix JSON/API inconsistencies breaking production Implement clean phone number + payment gating Correctly trigger AI outbound calls via API Ensure the full flow works: User → Input/Payment → API → AI Call → Response I focus on simple, scalable MVP architecture — no overengineering, just systems that work. If you want, I can start with a fast technical audit and outline fixes as per you want.

@blazenicholas

I’ve worked on full-stack projects involving AI calling integrations and understand the need to fix the complex API handshake and payment gating logic you described. Ensuring smooth communication between the Lovable frontend and backend APIs is critical to your lead generation platform’s success. I may be new to Freelancer, but I bring solid experience to the table fixing backend inconsistencies, integrating telephony APIs like Twilio, and implementing scalable payment flows. I focus on clear, maintainable solutions to get early-stage systems working reliably. If you'd like, we can schedule a quick chat to discuss your current setup and how I can help move this forward. Regards, Blaze Nicholas

@IronDevSolutions

In need of a skilled, senior full-stack developer who can unravel the complications within your system and link all components seamlessly together? Look no further! With over a decade of development proficiency, I specialize in API design, debugging, and can work with telephony APIs such as Twilio or Vapi proficiently. My experience in fixing broken or partially-built systems aligns perfectly with your project as we work on reconnecting your frontend to your backend system. Additionally, I'm a pro at setting up and integrating payment flows like Stripe and have extensive understanding with SEOs that should be of great value for this project. Given my previous work with clients on Lovable and similar no-code/low-code tools, I can ensure a smooth linkage between the frontend UI and backend logic. My strength lies not only in completing projects but also in keeping them simple, clean and scalable - exactly what you are seeking for in your early startup stage. Finally, my skillset aligns with your 'Nice to Have' list as well - working with SaaS startups, building lead generation platforms, and CRM experience are areas where I'm comfortable operating. Hiring me guarantees exceptional communication skills throughout the project, transparency with timelines, and diligent support even post-project completion. It's time to let me propel your platform to perform at its maximum potential!

@miraijaz

Hi, I’m a senior full-stack developer at SmartAI Soft, and I’ve worked on AI-driven platforms where APIs, payment gates, and AI calling flows had to be audited, fixed, and stabilized for production. I can help by: Auditing the current backend + Lovable frontend setup Fixing broken API responses and JSON inconsistencies Implementing clean phone number + payment gating logic Correctly wiring AI outbound calling via API (Twilio / Vapi / similar) Ensuring the full flow works: User → Input/Payment → API → AI Call → Response Keeping everything simple, stable, and scalable for an early-stage product I’m comfortable stepping into partially built systems, identifying what’s broken fast, and finishing the job without over-engineering. If you’d like, we can start with a quick review of the current setup and define the fastest path to a working production flow. Best regards, Aijaz Ali SmartAI Soft

@SEOGlobalLLC

Hi there ? I understand you need a senior full-stack developer to audit and repair your existing backend so the Lovable frontend connects cleanly, the API returns valid JSON, and the full flow from business search to lead generation and outbound calling works end-to-end. SEO Global Team has deep experience fixing broken SaaS systems, wiring complex API handshakes, integrating telephony providers like Twilio/Vapi, and implementing secure phone-number and payment gating with Stripe-style flows. We’ll start with a full technical audit, stabilize the API layer, implement clean auth, phone capture, and payment logic, then correctly trigger and validate the AI calling flow so users move smoothly from input to call to response. Which backend stack is currently in use (Node, Python, etc.)? Which calling API have you already selected or partially implemented? Is Stripe already connected or does payment need to be added from scratch? Looking forward to helping you get this working smoothly and launch-ready.

@Rozz11

I just completed a similar project. I fixed API handshake logic in an early-stage lead generation platform, handling phone number gating and AI call initiation with clean responses. I deliver clearly scoped work that connects frontend and backend components, reducing your need to manage multiple handoffs or complexities. Audit current setup Fix API endpoints Wire AI calling flow Happy to confirm the details over a quick message.

@saliktechpro

Hey , I just finished reading the job description and I see you are looking for someone experienced in API Integration, Full Stack Development, AI Chatbot Development, API Development, AI Development, API Testing and Google Maps API. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Salik.

@bhartimalu

Hello, I’m a full-stack developer experienced in both frontend and backend work and can diagnose and fix issues in your existing project, complete missing functionality, resolve bugs, and ensure everything works smoothly and reliably. I deliver well-tested, maintainable code and clear updates throughout the process. Regards, Bharti

@oleksandrp33

Hello, I’m a senior full-stack developer with strong experience repairing partially built SaaS systems, stabilizing API layers, and integrating AI calling stacks (Twilio/Vapi/ElevenLabs) with clean payment-gated workflows. My first step would be a structured audit of your current backend and Lovable frontend integration to identify where JSON responses break, normalize all API contracts, and enforce consistent response schemas so the frontend never receives malformed or unpredictable payloads. I will implement a clean gating layer: user enters phone OR completes Stripe payment → backend verifies eligibility → generates a signed call request → triggers the AI telephony API → stores call state + logs → returns structured status to frontend. This ensures a reliable end-to-end flow: User → Validation → Payment/Phone Gate → AI Call API → Response. Additionally, I’ll harden the handshake logic (timeouts, retries, webhook validation), standardize auth middleware, and document the full system flow so it remains simple, scalable, and production-ready for early-stage growth. Best Regards, Oleksandr

@Ateeshkumar

With over a decade of experience as a full-stack developer, I am confident in my ability to bring your project to the next level. The MERN stack is my bread and butter; I have mastered React.js for the frontend, Node.js for the backend, MongoDB for the database and AWS for cloud server. My skills paired with my meticulous work ethic ensure that your existing MVP project will be updated seamlessly, with new functionalities that align with your vision. Moreover, I understand your need for a dedicated individual rather than an agency, and as a full-time freelancer, this is exactly what I can offer you. Over the years, I have formed lasting working relationships with clients who've turned to me for long-term projects. Once we successfully complete this project together, I'm confident we will be excited to embark on more projects. To summarize, my extensive knowledge of the MERN stack coupled with my dedication to earning client satisfaction makes me an ideal candidate for this role and potentially more roles in the future. Thank you for considering me; let's discuss how I can effectively contribute to your project!