AI Voice Calling Agent Development

@ykarora26

With over 3 years of experience in AI development and voice technology, I understand your need for an AI voice/calling agent for business automation. I have successfully built similar solutions with Google Calendar integration and automated follow-up features. How do you envision the agent handling multiple calls simultaneously to ensure efficient customer service? Regards, Yogesh Kumar

@sarimshoaib1425

Voice Agents expert 3yrs+ experience in industry. Can 100% do it for you on the stack of your choice vapi/retell/n8n anything works, have done everything countless times. Awaiting more details, let's do it.

@tyagi5011

Having developed a wide range of impressive applications similar to your requirement, I am confident that I am the right freelancer for your AI Voice Calling Agent project. My 6+ years of experience in both Android and web development equipped me with the necessary skills to build innovative solutions tailored to meet unique business needs such as yours. From making video calls to appointment booking, I have delivered features aligned with your requirements before. My Team and I at LiveUpX have significant proficiency in developing natural conversation agents and integrating APIs for efficient service. With our strategic expertise in crafting automated SMS follow-ups and customer services as well as integrating Google Calendar, we can enrich your system for a flawless customer journey. We understand the value of delivering human-like interactions when it comes to voice agents and are keen on bringing this quality into fruition for your project. In partnering with us, you are guaranteed reliability, performance-driven solutions, and an unwavering commitment to exceeding expectations, as evidenced by our accolades provided on our portfolio. So let's join hands and transform your vision into an impactful digital product. Together, we will automate your business in an impressive

@bojans9

Hi, I can build the AI voice calling agent with inbound/outbound calls, natural conversations, automated appointment booking, Google Calendar integration, SMS follow-ups, and API/webhook connectivity. I can structure it as a reliable automation workflow with call handling, conversation logic, booking confirmation, follow-up triggers, and error handling. I can start with the core calling flow and then integrate the calendar, SMS, and external APIs in milestones. I’m ready to discuss your preferred voice provider/telephony stack and start immediately. Best regards, Bojan

@zuaibahmedd

Hi, I’ve built AI voice calling agents like this **6+ times before**, including inbound/outbound calling, appointment booking, Google Calendar, SMS follow-ups, and API/webhook integrations. I can build a reliable, natural-sounding solution tailored to your business workflow.

@StaceyG23

I DON'T COMPETE ON PRICE. I COMPETE ON RESULTS. Hello, Hope you are doing well. I have carefully checked your project and I am really interested in this job. I have read all the job details and descriptions in full. I can help you achieve success by taking care of the details, keeping everything organized, and making sure the final outcome is professional, reliable, and built around what you actually need. I noticed you specifically need an AI voice calling agent for inbound and outbound calls. I understand that getting this right means being accurate, responsive, and ensuring natural, human-like conversations. I am focused on building long term client relationships, not simply completing another job. If you give me the opportunity, I will work hard to make sure you are genuinely happy with the result. I would love the opportunity to help bring your project together and make this an easy, successful experience from start to finish. Our focus is not just development, but ensuring performance, quality, and a smooth delivery within your budget. Kind Regards, StaceyG23

@andymenon

Why I am the best fit for your AI Voice Calling Agent: Proven Full-Stack Voice & Automation Stack: I design production-ready voice agents using modern frameworks (Vapi / Retell AI / Twilio) paired with ultra-low latency text-to-speech (Cartesia / ElevenLabs) and Speech-to-Text (Deepgram). This ensures human-like conversational turn-taking, barge-in handling (interruption support), and sub-800ms response times. Deterministic Calendar & Booking Integration: Rather than treating calendar scheduling as a basic text prompt, I implement live API function calling directly connected to Google Calendar. The agent checks live slot availability, prevents double bookings, confirms the booking in-call, and pushes event details in real time. Automated Post-Call Workflows & Multi-Channel Follow-ups: I architect end-to-end backend pipelines (using n8n / custom webhooks) that trigger post-call actions the moment a call ends: sending immediate SMS/WhatsApp appointment confirmations, updating CRM pipelines, and initiating automated follow-up cadences. Dual Inbound & Outbound Architecture: Built for both handling inbound customer qualification and executing programmatic outbound follow-up campaigns with dynamic caller context and fallback routing.

@ImPritiranjan

Hello, I’m a Python and AI engineer with 6+ years of experience building conversational AI, agentic workflows, and production-grade API integrations. I can develop a natural, human-like voice agent for inbound and outbound calls, automated appointment booking, Google Calendar synchronization, and SMS follow-ups. The solution will include reliable customer follow-up workflows, webhook integrations, structured conversation handling, and secure, scalable backend services using Python and FastAPI. I’ll ensure smooth call flows, accurate scheduling, error handling, and maintainable deployment. I’d be happy to discuss your preferred telephony, voice, and messaging providers.

@vtriexc

Hello, I’m interested in building your complete AI voice/calling automation system. I have 4+ years of software development experience with strong expertise in Java, Spring Boot, REST APIs, automation, integrations, databases, and scalable application development. I can build an AI voice agent supporting both inbound and outbound calls, with natural, human-like conversations, customer qualification, FAQs, follow-ups, and escalation when required. The system can include: • AI inbound & outbound calling • Natural conversational voice interactions • Google Calendar integration for real-time availability • Automatic appointment booking, rescheduling & cancellation • SMS/text confirmations and reminders • Automated customer follow-up workflows • REST APIs and webhook integrations • Customer/lead data management • Secure authentication and error handling • Call logging and activity tracking The core workflow will be: Customer Call → AI Conversation → Understand Requirement → Check Calendar → Confirm Appointment → Create Event → Send SMS → Automated Follow-up I can work with your existing telephony/AI/SMS providers or recommend the most suitable setup based on your budget and requirements. I’ll also test the complete end-to-end workflow before delivery and provide setup/documentation for future maintenance. I’m ready to start immediately and can build the project from MVP to a production-ready solution.

@CliveMSoftware

I'll build your AI voice calling agent with both inbound and outbound capabilities using industry-standard telephony APIs like Twilio or VoiceBase. I'll implement natural language processing to handle conversational flows, integrate Google Calendar for real-time appointment availability and booking, and set up automated SMS follow-ups triggered by call outcomes. The system will include webhook endpoints for your backend, comprehensive error handling, and a clean dashboard to monitor calls and appointments. I have solid experience with voice automation platforms and can have a working MVP with core features ready in 4 days.

@aakaashberi

"Natural, human-like conversations" is one requirement in your list and the only hard one. It comes down to latency, and that decides the whole architecture. If speech-to-text, the model and text-to-speech run as three sequential requests, you get two to three seconds of silence after every sentence and the caller starts talking over the agent. It reads as a robot immediately. Everything has to stream: partial transcripts feeding the model before the caller finishes, and speech synthesised as tokens arrive. Target is under about 800ms to first audio. Just as important is barge-in — when the caller interrupts, the agent must stop speaking mid-word. Without that it is an IVR with better vocabulary. On booking: the agent must check Google Calendar for a free slot at the moment it offers one and write the event before ending the call. Reading a cached list of slots produces double bookings on the first busy day. Two honest flags. Outbound automated calling in India sits under TRAI rules and needs DLT registration and consent for the numbers you dial — that is your compliance to hold, and I will build consent and opt-out handling into the flow, but I will not pretend it is optional. And this stack has a real per-minute cost: telephony, speech, model and voice. I will size it against your expected call volume before you commit, because that number decides whether the automation pays for itself. Inbound first, one flow end to end, then outbound.

@mohamedt069

I can build the complete AI calling workflow using Vapi, n8n, Twilio, and Google Calendar, including inbound/outbound calls, appointment booking, SMS follow-ups, and API/webhook integrations.

@shaun4014

Hello, ➤ I understand you’re looking for a reliable professional who can handle your project efficiently, with strong attention to detail and a focus on delivering high-quality results. ✦ PROFESSIONAL QUALITY | FAST COMMUNICATION | UNLIMITED REVISIONS ✦ ❇️ WHAT I CAN OFFER: ▪ Develop a robust AI voice calling agent tailored to your business needs ▪ Implement seamless inbound and outbound calling capabilities ▪ Automate appointment booking with easy Google Calendar integration ▪ Set up SMS/text follow-ups for enhanced customer interaction ▪ Ensure natural, human-like conversations to improve user experience ▪ Facilitate automated customer follow-ups to boost engagement ▪ Integrate necessary APIs and webhooks for a comprehensive solution ❇️ MY APPROACH: I focus on understanding your specific requirements first, then delivering a professional solution that meets your expectations. I will keep communication clear and provide regular updates throughout the project. ✨ I’m ready to get started and can begin immediately. Send me the details, and I’ll ensure your project is handled professionally from start to finish. Regards, Shaun Kelly

@vanrevannn17

Hello, I’m interested in building your AI voice/calling agent for business automation. I’m a new freelancer currently building my portfolio in AI automation and AI agent projects. I want to be transparent that I’m not claiming years of professional experience with production voice systems, but I’m comfortable working with AI tools, APIs, automation workflows, and integrations. For this project, I can work on an MVP covering: Inbound and outbound AI voice calls Natural customer conversations Lead/customer qualification Automated appointment booking Google Calendar integration SMS follow-ups API and webhook integrations I would first confirm the telephony/Asterisk setup and required APIs, then build and test the core workflow step by step. I’m offering ₹7,500 INR because I’m currently building my freelance portfolio and looking for an opportunity to prove my skills through a real project. Any third-party costs such as telephony, SMS, voice AI, or API usage would be handled separately by the client or through your existing accounts. I’m ready to communicate clearly, learn your existing setup, and improve the system based on your feedback. Thank you for considering my proposal.

@belalautomation

Hi, I went through your requirements, and I think **Retell AI + n8n would work really well together for this.** Retell can take care of the actual phone conversations — inbound and outbound calls, natural responses, call recording, transcripts and summaries. Then n8n can handle everything happening around those calls, like Google Calendar booking, SMS and customer follow-ups, API/webhook integrations, and sending the call/customer data to your CRM or Google Sheets. The idea would be to have the voice agent handle the conversation naturally, while the rest of the workflow runs automatically in the background. Before I suggest the exact setup, I’d like to understand a little more about your business and how you want the calls to flow. **What type of business is this, and are you already using a CRM or SMS/phone provider?** Happy to discuss it and figure out the best approach. Thanks, Bilal

@zakirali86

Hi, I’d be happy to build your AI voice/calling agent with inbound and outbound calling, natural conversations, automated appointment booking, Google Calendar integration, SMS follow-ups, and API/webhook integrations. I can design the system to automate the complete customer journey—from answering calls and understanding customer requests to booking appointments and sending follow-ups. I’m experienced in AI/ML, LLM-based applications, RAG, APIs, and backend automation, and I can build a scalable solution tailored to your business workflow. I’d love to discuss your requirements and get started.

@danielpeters146

⚠️ IF YOU’RE NOT HAPPY, YOU DON’T PAY. ⚠️ I have successfully helped clients implement AI-driven solutions that enhance customer interactions and streamline operations. For your project, I can develop a sophisticated AI voice calling agent that ensures seamless inbound and outbound calls, automates appointment booking, and integrates smoothly with Google Calendar. My focus will be on creating natural, human-like conversations that foster meaningful customer engagement. With my experience in API and webhook integrations, I can deliver a reliable system that meets your requirements for automated follow-ups via SMS and calls. If you'd like to see examples of similar projects I've completed, feel free to message me. Regards, Daniel

@oleg371

Hello! I’d be interested in working on this project. I can help build an AI voice agent for inbound and outbound calls, appointment booking, Google Calendar integration, SMS follow-ups, and API/webhook automation. I’ll focus on making the conversations natural, reliable, and easy to manage. I’m ready to discuss your workflow and get started.

@SoneJ

Hello, I see that your goal is to enhance business automation through a highly effective AI voice calling agent. This is crucial for streamlining operations and improving customer engagement. My approach would involve developing a robust system that handles both inbound and outbound calls seamlessly, ensuring natural, human-like interactions. I would prioritize integrations with Google Calendar for appointment bookings and implement SMS follow-ups to keep your customers informed and engaged. Throughout the project, I will maintain open communication to ensure that your vision is realized and any adjustments are made promptly. To tailor the solution effectively, could you clarify what specific features you envision for the customer follow-up process? Additionally, do you have any existing systems that the AI agent needs to integrate with? Regards, Soné Joubert