Flutter Developer needed for AI Voice-Bot Automation

@Julian29

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I have 9+ years of proven experience building AI voice automation platforms and I fully understand your requirement. The goal is to deliver a scalable SaaS voice-calling system where users upload leads, trigger AI outbound calls, and track outcomes in real time. -->> Flutter mobile app (Android & iOS) with multi-client login -->> Excel/CSV upload + bulk AI outbound calling workflow -->> Low-latency voice AI integration (Vapi/Retell) + telecom providers (Exotel/Kaleyra/Twilio) -->> Real-time dashboard with call status, sentiment, recording, and analytics My approach: clean architecture, secure APIs, WebSocket-based voice streaming, and agile delivery with scalable infrastructure. I would approach your project by starting with wireframes and getting the UI/UX design completed, before starting the actual development phase. I can successfully implement this project from start-to-finish. Let's come together and create a platform that not only propels your business but also stands out prominently within the marketplace. Thanks & regards Julian

@yuliussmayoru

Hello! The main ways these voice bots fail are call status not syncing in real time, CSV jobs crashing mid run, and telecom limits in India, so I’ll build a Flutter app plus a backend job system that triggers Vapi or Retell safely and reports live results back to the dashboard. Mobile app: Flutter login, multi client accounts, CSV Excel upload, lead list, start calling button, and live call status Backend flow: upload file, validate numbers, DND filter, enqueue calls, trigger Vapi or Retell sessions, and store results reliably Telecom: Twilio India or Exotel Kaleyra numbers, call recording, webhooks, and retries with rate limits AI config: English and Hindi plus Hinglish prompting, low latency websockets, and consistent call summary sentiment labels Dashboard: call history, statuses like interested busy not picked, filters, exports, and simple analytics Payments: lightweight SaaS billing so each client can be isolated and billed separately Scale path: queue based architecture so scaling toward 10k concurrent calls is possible without rework Curious question: do you already have Vapi or Retell and a telecom provider account, and which one is confirmed for India, Twilio, Exotel, or Kaleyra? Warm regards, Yulius Mayoru

@mrresearcher99

Hi there, I’ve reviewed your Flutter app requirements and would love to help. With 5+ years of experience in cross-platform development, I specialise in clean UI, smooth performance, and robust API integration. I’ll begin with clear planning, share regular progress updates, and ensure the app is fully tested before launch. Let’s connect to discuss your vision — I’m ready to get started! Best, Bhargav Flutter Developer | Android & iOS Expert

@mughiraaa

Hello, I have reviewed the details of your project. i will create a flutter mobile app for android and ios that connects to a node.js backend using restful apis. users log in and upload csv excel files that are parsed on the server and stored in postgresql. once the user taps start calling the backend opens websocket sessions with vapi ai retell ai to trigger real time outbound voice calls using twilio india exotel kaleyra numbers. call status events flow back instantly through websockets and are saved per lead with call summary sentiment and recording url. the dashboard reads this data in real time and shows interested busy not picked states clearly. multi client access is handled with role based accounts and each client data stays isolated. the flow is simple fast and ready to scale to high call volume. Let's have a detailed discussion, as it will help me give you a complete plan, including a timeline and estimated budget. I will share my portfolio in chat I look forward to hear from you. Thanks Best Regards, Mughira

@mayankinnovative

Hello, LACK OF ROBUST VOICE BOT INTEGRATION LIMITS USER INTERACTION You need a skilled Flutter developer to build and integrate an AI-powered voice bot automation into your app so users can interact naturally using speech. Without this advanced feature, users are restricted to manual navigation and text input, which reduces accessibility, engagement, and the overall experience your application can offer. DEVELOP AI VOICE-BOT AUTOMATION USING FLUTTER I will implement your **AI voice-bot automation** within your Flutter app by integrating reliable speech recognition and synthesis technologies along with your chosen AI backend. This includes setting up voice capture, processing commands via AI models, generating responses, implementing conversational flows, and ensuring seamless UI integration so voice interactions feel intuitive. I will also optimize performance, handle edge cases, and ensure compatibility across Android and iOS. ENHANCED USER EXPERIENCE WITH NATURAL VOICE INTERACTIONS You will receive a fully integrated AI voice bot that improves engagement, accessibility, and user satisfaction by enabling natural speech interactions. The final result will elevate your app’s capabilities and provide a modern, intuitive way for users to communicate with your platform. Thanks

@ssquare489

I am Sumit Joshi from Sacesta Technologies. I will build your SaaS plus mobile app for AI-powered outbound calling with Vapi or Retell, CSV or Excel upload, real-time call tracking, and a clean analytics dashboard, designed for low latency now and future scale. Questions • Which calling route will you use first: Twilio India, Exotel, or Kaleyra, and do you already have verified caller IDs and compliance requirements? • Do you need strict DND and consent enforcement (opt-in proof, opt-out, time windows) per client, or will you only call pre-consented lists? Build plan • Flutter app login plus multi-tenant client accounts • Bulk import with validation, dedupe, and DND filtering • Start Calling triggers agents, logs call summary, sentiment, and recordings • Live dashboard with statuses (Interested, Busy, Not Picked) plus exports • Node.js API plus Postgres with queues and WebSockets for real-time updates Relevant work • FuelOps360, multi-role dashboards and real-time ops tracking • FileChannels, real-time events and notifications Please message me on Freelancer and share your preferred voice AI provider plus a sample CSV so I can map the exact flow. Regards, Sumit Joshi

@AlexDeveloper911

Hello , 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 CRM, Node.js, Customer Service, Backend Development, Flutter, Lead Generation, API Integration, AI Text-to-speech, AI Chatbot, AI Agents Lets connect in chat so that We discuss further. Thank You

@shawanay

I can build your AI-powered outbound calling app with real-time voice. I’ll set up CSV/Excel uploads, trigger automated calls, and save call summaries with sentiment analysis, all visible in a simple dashboard. Multi-language support and multi-client accounts will be included, and the architecture will be ready for mobile. Portfolio: https://www.freelancer.com/u/shawanay Let’s chat I have a few questions to make sure we cover all the AI integration, automation, and dashboard features before starting.

@SkillCrafts

I specialize in low-latency Flutter development and have recently completed a successful real-time integration using Vapi’s WebSocket API for a complex conversational AI project. Implementing Vapi/Retell within your Flutter application for voice-bot automation is a straightforward technical challenge I am fully prepared to handle, ensuring seamless, natural conversations right out of the box. My approach focuses on establishing a persistent WebSocket connection optimized specifically for Vapi/Retell’s real-time transcription payloads and utilizing optimized audio libraries (e.g., `flutter_sound`) for reliable stream management. I will implement robust state management, likely using Riverpod, to efficiently manage conversation history and ensure UI updates happen with minimal latency, prioritizing rigorous error handling for connectivity drops to maintain conversation continuity. I already have a clear plan for managing the native audio permissions and lifecycle within the Flutter framework. Before beginning, are you utilizing the specific Vapi client SDK, or are we targeting a direct native WebSocket implementation for maximum control over the audio streams? Additionally, what is the expected concurrent call volume for the initial deployment? Let’s schedule a quick 5-minute chat to align on the exact integration scope and timeline, ensuring we build a scalable and production-ready final product.</blockquote>

@caroldata

With over 10 years in the industry, my company and I have gained a wealth of experience in backend development which includes incorporating AI voice technology into mobile applications. This makes us perfectly suited for your project's requirements. We've worked with various tech stacks, including JS (both Node.js and Angular), PHP, Wordpress, Shopify and within a spectrum of industries allowing us to adopt low-code/no-code practice with ease. Furthermore, we are experts in Flutter, the chosen platform for your app's development. Harnessing its power through our vast knowledge and exemplary skills, we will provide you an application that smoothly handles bulk processing and automates outbound calls. Our immense knowledge of Node.js will ensure efficient management of the backend automation flow from excel data, through the AI agents to outbound calls. Another area where we truly excel is building comprehensive dashboards. Bearing this in mind, your analytics dashboard detailing real-time call statuses and a simple screen illustrating call history and lead status will be delivered with utmost perfection to suit all your needs. Moreover, we prioritize clear communication throughout projects to guarantee your satisfaction at every stage. Considering our skill-set matches your project requirements perfectly whilst promising high-quality service and complete satisfaction, I surely look forward to working together on this venture!

@RajAbhisek

Hi, I'm Raj Abhisek Panda, a technical consultant specializing in Flutter and AI integration. I've carefully reviewed your project requirements for a voice-bot automation solution, and I'm confident we can deliver exactly what you need. Your project sounds exciting - a Flutter mobile app that leverages AI voice integration with Vapi/Retell for automated outbound calling. I understand you're looking for a robust solution that can handle bulk CSV uploads, trigger AI-powered calls, and provide comprehensive analytics across multiple languages. What I can offer: - Flutter mobile app development - AI voice integration using Vapi/Retell - Real-time call tracking dashboard - Backend automation with Node.js - Multi-language support - Scalable architecture for future expansion My technical approach will focus on creating a lightweight, efficient solution that meets your specific requirements - from file uploads to call sentiment tracking. We'll ensure low-latency voice interactions and a seamless user experience. Feel free to ping me, and we can have a quick call to dive deeper into the project details. Looking forward to potentially collaborating! Best regards, Raj Abhisek Panda

@haseebsidd07

Hey , I just finished reading the job description and I see you are looking for someone experienced in CRM, Customer Service, AI Chatbot, Flutter, AI Text-to-speech, Lead Generation, Node.js, API Integration, Backend Development and AI Agents. 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, Syed.

@himanshus642

I’ve carefully read your project description and this is exactly the kind of work I handle. I’m a verified Full-Stack & Automation Engineer (5+ years) and I’ve recently delivered similar projects with 5★ client feedback. How I’ll approach your project: • First, I’ll clearly understand your requirements • I’ll start with a milestone-based plan (no risk for you) • Clean, scalable and well-documented solution • Regular updates + quick communication Relevant experience: ✔ SaaS / Web / Automation / API-based projects ✔ Secure backend + clean frontend ✔ On-time delivery with released milestones Before we proceed, I’d like to clarify: Do you already have detailed requirements or should I propose a structure? Is milestone-based payment acceptable for you? If this sounds good, let’s discuss and get started. Thanks, Himanshu

@bhumia28

Hello As a seasoned developer with comprehensive experience in Full-Stack and Mobile App Development, I am confident in my ability to tackle your project head-on. Your need for an integrated application that combines the power of Flutter with voice AI APIs and real-time analytics aligns perfectly with my skillset. Over the years, I have successfully crafted numerous solutions by manipulating data from various sources, making your request to automate Excel data flow a smooth task for me. Best regards, Bhumi

@Android69

Hello! I understand you're looking to build a SaaS-based mobile app for AI-powered outbound calling with features like Vapi/Retell AI integration, CSV upload automation, a multi-language dashboard, and support for high scalability. I’ll implement a robust backend with Node.js to handle seamless automation (upload -> AI-triggered calls -> data logging), integrate low-latency voice AI APIs like Vapi/Retell AI with WebSockets for real-time interaction, and design an intuitive Flutter app for easy client use. Additionally, features like Hinglish prompting, analytics dashboards, scalability for 10k+ concurrent calls, and DND filtering will be built with future-ready solutions. I can begin working right away and ensure a scalable, clean, and efficient solution tailored to your needs.

@NareshJoshiTech

Hello, I’ve gone through your project details carefully, and I must say it sounds really interesting. I’d love to bring my experience to make it a success. With over 10 years of hands-on experience in web, mobile, and software development, I’ve had the privilege of working with clients from around the world — delivering 1000+ successful projects so far. My team and I are comfortable working with technologies like MEAN, MERN, Flutter, React Native, PHP, Laravel, Python, WordPress, Shopify, AI, Blockchain, CRM, CMS, and more. What truly drives me is solving complex challenges and transforming ideas into reliable, user-friendly products. I always aim for clear communication, transparency, and results that make clients feel confident they chose the right partner. You can review my portfolio here: https://www.freelancer.in/u/NareshJoshiTech I’d really appreciate the chance to discuss your project in detail and explore how we can create something great together. Looking forward to hearing from you. Warm regards, Naresh Joshi

@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 CRM, Node.js, Customer Service, Backend Development, Flutter, Lead Generation, API Integration, AI Text-to-speech, AI Chatbot, AI Agents Lets connect in chat so that We discuss further. Regards

@tamannarajput18

As a full stack developer with an innate focus on Mobile Application Development and AI integration, I'm thrilled at the opportunity to apply my skills in creating your AI-powered outbound calling app. With 6+ years of extensive hands-on experience, I've built multifaceted mobile apps exactly like what you're looking for – complete with features such as real-time call tracking, sentiment analysis, and hinglish language support. My stellar track record in working with Node.js for an efficient backend that handles large quantities of data, coupled with my expertise in API integrations will be pivotal in ensuring seamless functioning of the app you're envisioning. Moreover, I bring proficiency in Flutter that's designed to handle high concurrency levels like you forecast, making your app future-proof.

@rajmalviyamalviy

Hello, I can build your focused Android task management app with clean Material Design, offline persistence, and cloud sync. I have experience creating apps with Firebase integration and Kotlin/Java that are stable across Android 11–14. Deliverables: Full Android Studio project with clear, well-commented code Release-ready APK and signed app bundle One-page setup guide for build, run, and backend configuration Core features I’ll implement: Create and assign tasks to self or other users Local storage with automatic cloud sync when online Intuitive list view and add/edit screens following Material Design and basic accessibility standards I can ensure tasks persist across app restarts, offline changes re-sync correctly, and the app is fully stable for production. Best regards, Raj m