Voice AI developer- inbound and outbound calls

@dfordesigners

Hi Teastmond I’m your web developer, ready to turn your project Voice AI developer- inbound and outbound calls into reality! I’d love to discuss the details and create something amazing together. Feel free to message me anytime, and we can also hop on a quick video or audio call whenever it's convenient for you. I’ve developed many projects exactly like what you’re looking for. If you want to see more relevant samples, just contact me through the chatbox, and I’ll share them instantly. ★ Why Clients Trust Me 500+ successful web projects delivered 430+ positive client reviews Expert in PHP, Telemarketing, Transcription, Asterisk PBX, VoIP, Technical Documentation, API Integration, Natural Language Processing, AI Development WordPress, Shopify, PHP, JavaScript, HTML, CSS, Plugin/Theme Development, Laravel, WebApp Clean, modern, responsive and SEO-optimized designs Fast delivery, great communication, and long-term support Available during EST hours for smooth collaboration If you want a professional developer who delivers quality work on time and stress-free, let’s connect. I’m excited to help build something amazing for you. Best regards, Kausar Parveen

@phpxpert89

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on PHP, Telemarketing, Transcription, Asterisk PBX, VoIP, Technical Documentation, API Integration, Natural Language Processing, AI Development Please come over chat and discuss your requirement in a detailed way. Thank You

@rbtech1984

Hello There!!! ⚜⭐⭐⭐⭐⚜((Production ready voice ai system handling inbound qualification and outbound sales with human handoff))⚜⭐⭐⭐⭐⚜ What you are building goes beyond basic call automation. You are aiming for a reliable voice ai layer that can qualify, route, book, and transfer calls while staying natural, cost aware, and scalable. That is where most systems fail if not designed correctly from day one. You are looking for someone who understands telephony behavior, real time voice pipelines, webhook driven logic, and how LLMs behave inside live conversations, not just chat demos. The system needs clean separation between call control, ai reasoning, crm logging, and follow up actions. I have worked on inbound and outbound voice ai flows using Twilio style routing, webhook orchestration, LLM driven intent detection, live transfers, and crm sync. My approach focuses on reducing latency, handling interruptions correctly, and keeping per minute costs predictable through smart routing and model usage. 3 most important features: 1. Intelligent inbound and outbound call routing with live transfer logic 2. Natural voice conversations with interruption and voicemail handling 3. Automatic summaries, crm logging, and sms follow ups If you would like to review architecture ideas or discuss optimization strategies before moving forward, I am happy to continue the discussion. Warm Regards, Farhin B.

@GameOfWords

Voice AI developer- inbound and outbound calls I’m a full-stack software engineer with expertise in React, Node.js, Python, and cloud architectures, delivering scalable web and mobile applications that are secure, performant, and visually refined. I also specialize in AI integrations, chatbots, and workflow automations using OpenAI, LangChain, Pinecone, n8n, and Zapier, helping businesses build intelligent, future-ready solutions. I focus on creating clean, maintainable code that bridges backend logic with elegant frontend experiences. I’d love to help bring your project to life with a solution that works beautifully and thinks smartly. To review my samples and achievements, please visit:https://www.freelancer.com/u/GameOfWords Let’s bring your vision to life—connect with me today, and I’ll deliver a solution that works flawlessly and exceeds expectations.

@Ahmedh058

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Voice AI developer- inbound and outbound calls . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan

@Ivanor1505

Hello. You are building a production Voice AI that must handle inbound and outbound calls without breaking trust or scale. The main risk is reliability under real call volume, because weak interruption handling or routing logic kills conversions fast. Because of that I treat inbound and outbound as one shared conversation core, then layer dialing, routing, transfers, and SMS on top. That’s why call state, intent detection, CRM logging, and calendar booking use the same webhook-driven flow and configurable scripts. This keeps summaries, transcripts, and outcomes consistent without redeploying logic. I’ve built voice systems where costs spiked due to poor turn-taking and TTS usage. Here we control latency, transfer timing, and per-minute usage, then validate with real call tests before launch.

@juanjosec63

Hi, I’ve built and deployed production voice AI systems that handle both inbound and outbound calling, with real-world volume, interruptions, transfers, and CRM logging — so this scope is very familiar. I’ve worked directly with **Twilio for call control**, **Vapi-style voice agents**, LLM-driven dialog management (OpenAI/Claude), STT/TTS pipelines, webhook orchestration, and calendar + CRM integrations without relying on all-in-one platforms. I approach these systems with reliability and cost in mind: clean call-state handling, fast barge-in detection, voicemail detection/drop, live transfer logic, and script/config updates that don’t require redeploys. I’m also comfortable optimizing per-minute costs through smart routing, prompt efficiency, audio codec choices, and transfer timing. Inbound and outbound flows would share a modular core so scaling and future phases stay straightforward. I’m available to start immediately, can follow a detailed spec precisely, and would be happy to review your Phase 1 requirements and suggest optimizations around call quality, latency, and cost once I see the architecture.

@huzaifa306

Hi, I have experience building inbound and outbound Voice AI systems with Vapi, Twilio, and LLMs. I can set up call routing, lead qualification, booking, and SMS follow-ups with a scalable and reliable design. I am comfortable working from technical specs and delivering a production-ready system. Ready to start right away.

@Ahmedyar547005

Hey , I just went through your job description and noticed you need someone skilled in VoIP, Technical Documentation, AI Development, Natural Language Processing, PHP, Telemarketing, API Integration, Transcription and Asterisk PBX. That’s right up my alley. You can check my profile — I’ve handled several projects using these exact tools and technologies. Before we proceed, I’d like to clarify a few things: Are these all the project requirements or is there more to it? Do you already have any work done, or will this start from scratch? What’s your preferred deadline for completion? Why Work With Me? Over 180 successful projects completed. Long-term track record of happy clients and repeat work. I prioritize quality, deadlines, and clear communication. Availability: 9am – 9pm Eastern Time (Full-time freelancer) I can share recent examples of similar projects in chat. Let’s connect and discuss your vision in detail. Kind Regards, Zain Arshad

@syedraza21295

Hello, I would like to grab this opportunity and will work till you get 100% satisfied with our work. Please come over chat and discuss your requirement in a detailed way. Regards

@brayanstiven5

Hi Teastmond. I am very excited with your project because I have completed similar project recently. The skills required for your project are my main specialty. I can handle this perfectly and have abundent experiences. Please confirm that I am one of the best fits for you and drop me a message for further discussion. Thanks and Best Regards. Brayan Stiven A.

@antonk52

✔✔✔Hold on!! Looking for a Developer Who Gets Results? Hire Me, Relax, and Watch Your Project Turn Into Success✔✔✔ This is exactly the kind of production-grade Voice AI system I build—covering both inbound qualification and high-volume outbound sales, with reliability, scale, and cost control in mind. How I’ll approach Phase 1: • Modular Voice AI architecture (LLM + STT/TTS + Twilio) optimized for per-minute cost • Outbound auto-dialing with lead uploads, pacing, voicemail logic, and SMS follow-ups • Inbound 24/7 call handling with intent routing, qualification, booking, overflow rules • CRM logging (Airtable / HubSpot / Notion) + calendar booking (Calendly or equivalent) • Admin-configurable scripts, flows, and qualification logic—no redeploys needed • Call summaries, transcripts, and structured outcomes for analytics I design systems with scalability, failure handling, and cost optimization from day one (model selection, token control, silence trimming, batching, and async webhooks). What I’ll provide upfront: • Clear build timeline & milestones • Deployment-ready setup with testing & QA • Documentation you can actually maintain • Suggestions to improve call quality and reduce per-minute spend If you’re looking for a serious Voice AI partner—not an experiment—I’m ready to start Phase 1 and scale this into a long-term platform.

@ianb65

As an accomplished and versatile Full-Stack Engineer with over seven years of professional experience, I have had extensive exposure to developing complex projects involving APIs and automated systems, making me the ideal fit for your Voice AI developer role. I have built automated systems in the past, including Voice AI and call automation systems, giving me valuable insights into call routing, IVR logic, and live transfers – all necessities for this project. My hybrid skillset as a Full-Stack Engineer also places me in a unique position to optimize and scale your system effectively while ensuring cost efficiency. I cultivate a mindset that prioritizes reliability, scalability and cost-effectiveness in every project I undertake— characteristics that resonate with your project requirements. By choosing me, you're not just hiring a freelancer but partnering with a professional dedicated to long-term technical collaborations. My familiarity with managing similar projects will certainly play an integral role in successfully developing the initial Voice AI system—a stepping stone towards sustaining growth on this platform. Together, we can optimize call quality and consequently reduce per-minute costs while maintaining exceptional service quality. Let’s build a voice AI system that leaves an enduring mark!

@DngPhgNam

✅Hi there, hope you are doing well! I have extensive experience in developing Voice AI systems for both inbound and outbound engagements, including past projects where I've successfully implemented Twilio and integrated LLMs like OpenAI for seamless call handling. The most critical aspect for effectively executing this project is ensuring the system handles natural, human-like conversations while facilitating smooth transitions between voice AI and human agents. To meet your requirements, I will build a robust Voice AI system that efficiently qualifies leads, automates dialing, and integrates with your desired CRM and calendar tools for a user-friendly experience. I'd like to work on this project sincerely from my confidence. Let's connect and discuss more.

@irazon15

I build production‑grade Voice AI systems that handle real inbound and outbound traffic—not demos. I’ve delivered Twilio + Vapi/LLM stacks with live transfers, voicemail detection, SMS follow‑ups, CRM logging, and calendar booking at scale. I focus on call quality, interruption handling, and cost control (prompt design, streaming STT/TTS, smart routing). Available immediately; Phase‑1 delivery in ~4–6 weeks with clear docs and room to scale.

@abdf2010

Hello there, I reviewed your project Voice AI developer- inbound and outbound calls and understood the requirements at a high level. I focus on delivering clear, stable, and maintainable solutions aligned with the actual scope, I can work with PHP, Telemarketing, Transcription and follow a clean development process with proper structure and error handling. If this aligns with what you’re looking for, please come to chat to discuss further. Best regards

@bilal0356

Hi, We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Telemarketing, Transcription, Asterisk PBX, VoIP, Technical Documentation, API Integration, Natural Language Processing, AI Development Lets connect in chat so that We discuss further. Thank You

@muhammadusama088

With my extensive background in both mobile and web development, as well as an in-depth understanding of APIs, I am confident that I am the right fit for your Voice AI project. Equipped with 5+ years of experience, I have successfully built scalable web solutions from scratch and mobile apps with real-time integrations - skills that are directly applicable to your requirements. For APIs, I've worked with services such as Firebase, AWS and CI/CD. In addition to my technical strengths, I value reliability, scalability, and cost-efficiency - crucial factors your project emphasizes on. Moreover, I've utilized platforms like Twilio previously and this will be valuable since you specified its use. For example,I integrated Google Maps into app in real-time helping using this same state-of-the-art technology, we can improve call quality or reduce per-minute costs. More than just delivering what is asked from a technical standpoint, I also prioritize professional communication and comprehensive documentation. So you can say that while my technical skills differentiate me in terms of competence, it is the way I align them to potential clients' needs that sets me apart.

@venplura

Hi there! Just wondering, do you need the system to handle multi-language support or accents for both inbound and outbound calls? Regardless, this is definitely something that I feel confident delivering on, given my past experience. I would love to discuss your project further! Looking forward hearing from you. Kind Regards, Corné