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Project: AI Phone Assistant SaaS – „Competitors for reference and inspiration only (no 1:1 copy): – [login to view URL] – [login to view URL] 1. Project Goal We are looking for an experienced software developer or small team to build a functionally equivalent clone of hallopetra.de. The goal is to create a stand-alone SaaS product (white-label capable in the future) that can be marketed under our own brand in Germany / EU. This is not a simple website, but a real AI + VoIP SaaS platform. 2. Core Features (MVP – Required) AI Phone Assistant Handle incoming phone calls automatically Natural language conversations (German required, English optional) AI-driven call flow: Greeting Understanding caller intent Asking follow-up questions Taking messages / booking callbacks / forwarding calls Call transcript (text) Optional call recording (GDPR-compliant, opt-in) Telephony & Infrastructure SIP / VoIP integration (Twilio, Sipgate, Placetel or similar – developer recommendation welcome) Multiple phone numbers per customer Call forwarding & business hour rules Webhooks for call events AI & Speech Technology Speech-to-Text Text-to-Speech (natural voices, not robotic) LLM integration (OpenAI or comparable – developer recommendation welcome) Editable AI prompts per customer (via dashboard) Customer Dashboard User registration & login Phone number management AI assistant configuration: Tone of voice Greeting text Business rules Call history & transcripts Usage statistics: Number of calls Call duration Cost overview Invoices & subscription overview Billing & Subscriptions SaaS subscription model Monthly plans (e.g. minutes-based or calls-based) Stripe (or equivalent) integration Automatic invoicing Upgrade / downgrade / cancellation 3. Frontend & Design Modern, trustworthy SaaS look Fully responsive (desktop / tablet / mobile) Maybe Laravell Preferred tech: React / Vue / [login to view URL] Tailwind CSS or similar 4. Backend & Architecture Preferred stack: Node.js / Python (FastAPI) / Laravel Clean API-based architecture Multi-tenant SaaS (multiple customers) GDPR-ready basics: Data deletion Opt-in for recordings EU server hosting preferred 5. Out of Scope (Optional Later) Mobile apps CRM integrations (HubSpot, Salesforce, etc.) WhatsApp or chatbots White-label reselling system 6. Deliverables Fully functional MVP Source code (Git repository) Setup & deployment documentation Basic handover / explanation Optional: deployment on our server 7. Freelancer Requirements Proven experience with: VoIP / telephony APIs AI / LLM integrations SaaS platforms Subscription billing systems Please include in your proposal: Relevant project references Suggested tech stack & architecture Estimated timeline (MVP) Fixed price or milestone-based offer 8. Budget & Timeline Budget: open (realistic offers only) Target timeline: MVP within 6–10 weeks
ID do Projeto: 40131195
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181 freelancers estão ofertando em média €621 EUR for esse trabalho

Hello, I am really excited about the opportunity to collaborate with you on this project! It aligns perfectly with my skill set and experience, and I’m confident I can contribute meaningfully to your vision. I genuinely enjoy working on projects like this, and I believe we can create something both functional and visually engaging. Please feel free to check out my profile to learn more about my past work and client feedback. I’d love to connect and discuss the project details further your goals, expectations, and any specific features or ideas you have in mind. The more I understand your vision, the better I can bring it to life. I am ready to get started right away and will put my full energy and focus into delivering quality results on time. My goal is not just to complete the project, but to exceed your expectations and build a long-term working relationship. Looking forward to hearing from you soon! With regards! Nikhil
€750 EUR em 7 dias
8,1
8,1

⭐⭐⭐⭐⭐ Build an AI Phone Assistant SaaS Platform for Your Needs ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for an experienced software developer to create an AI Phone Assistant SaaS. Look no further; Zohaib is here to assist you! My team has successfully completed 50+ similar projects for SaaS platforms. I will use the best technologies to ensure a smooth, functional, and user-friendly product. ➡️ Why Me? I can easily create your AI Phone Assistant SaaS as I have 5 years of experience in VoIP integration, AI development, and SaaS platforms. My expertise includes telephony APIs, subscription billing systems, and user management. Additionally, I have a strong grip on modern web technologies like Node.js and React, ensuring a robust solution for your needs. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to chatting with you! ➡️ Skills & Experience: ✅ VoIP Integration ✅ AI Development ✅ SaaS Platforms ✅ Subscription Billing ✅ Telephony APIs ✅ User Management ✅ Node.js ✅ React ✅ Python (FastAPI) ✅ Database Management ✅ Responsive Design ✅ GDPR Compliance Waiting for your response! Best Regards, Zohaib
€350 EUR em 2 dias
7,7
7,7

Hi I can build a GDPR-ready AI Phone Assistant SaaS that automatically handles inbound calls, understands intent, and resolves or routes requests across German voice workflows. The core technical challenge is achieving natural, reliable conversations over VoIP while preserving context, complying with EU data rules, and scaling across multiple tenants. I solve this by combining SIP/VoIP integration with high-quality speech-to-text and text-to-speech, an LLM-driven dialog engine, and event-based webhooks for call control. The platform will support configurable prompts per customer, business-hour rules, call forwarding, transcripts, and optional opt-in recordings. A secure, multi-tenant dashboard will manage numbers, AI behavior, call history, and usage metrics with clean role-based access. Subscriptions and invoicing will be automated via a payment gateway, keeping usage, costs, and upgrades synchronized. The result is a production-grade, extensible SaaS you can brand and sell across EU markets. Thanks, Hercules
€500 EUR em 7 dias
7,0
7,0

Hello chriss1305 Thanks for posting this exciting project, I am really interested in your project. Because I am working on 7 years over with PHP, Website Design, Mobile App Development, VoIP, Node.js, Twilio, SIP, SaaS, Natural Language Processing, AI Development, I can provide good result in your needed timeline. I am looking forward to discussing more with you soon. Regards Efanntyo -.
€250 EUR em 10 dias
6,8
6,8

Dear Hiring Manager, What if you could validate your AI Phone Assistant SaaS concept with a working demo before committing to full development? I'm prepared to build a functional prototype showcasing core call handling, AI conversation flows, and dashboard basics—at no upfront cost—so you can experience the solution firsthand. With 10+ years developing multi-tenant SaaS platforms and proven expertise in VoIP integration (Twilio/SIP), LLM deployment, and subscription billing systems, I propose delivering your German-language AI assistant MVP using Node.js, React, and OpenAI—architected for scalability, GDPR compliance, and white-label capability from day one. This positions your product for rapid EU market entry with enterprise-grade infrastructure and minimal technical debt. Let's discuss your specific requirements, my relevant project references, and detailed architecture in a brief call to confirm alignment and finalize a fixed-price, milestone-based engagement. Regards, Smith
€500 EUR em 7 dias
6,4
6,4

✋ Hi there. I can develop a fully functional AI Phone Assistant SaaS with VoIP integration, AI-driven call handling, and a multi-tenant dashboard for customer management. ✔️ I have solid experience building SaaS platforms with VoIP APIs, AI/LLM integrations, and subscription billing. In previous projects, I delivered AI assistants capable of natural language conversations, call transcription, dashboard analytics, and GDPR-compliant call recordings. ✔️ For your project, I will implement AI-driven call flows with speech-to-text and text-to-speech, SIP/VoIP integration using Twilio or a similar provider, multi-number management, AI assistant customization per customer, call transcripts, and basic reporting. I will integrate subscription billing with Stripe, support multi-tenant architecture, and ensure GDPR compliance. ✔️ The frontend will be responsive using React or Vue with Tailwind, and the backend will follow a clean API-based architecture using Node.js, FastAPI, or Laravel. I will deliver the MVP with source code, deployment instructions, and a brief handover. Let’s chat to finalize tech stack, telephony setup, and milestone plan. Best regards, Mykhaylo
€500 EUR em 7 dias
5,4
5,4

⚠️You are not looking for a coder. You are looking for someone who can build this properly. That is exactly why your project stood out.⚠️ Your ambition to deliver a GDPR-compliant, AI-powered VoIP phone assistant SaaS with multi-tenant architecture and dynamic call handling aligns directly with how we approach scalable, secure digital ecosystems at DigitaSyndicate. At DigitaSyndicate, a UK-based digital systems agency, we build precision-engineered automation, modern web platforms, and AI-driven systems designed for performance and long-term scalability. Our expertise in integrating telephony APIs, LLMs, and subscription billing aligns perfectly with your requirements for an intuitive, streamlined, and future-proof platform. Having delivered complex SaaS solutions with AI-enhanced workflows, we understand the critical balance between robust backend architecture and seamless user experience. Can you share your main priorities and timeline so I can map out the right execution plan for you? Casper M. Project Lead | DigitaSyndicate Precision-Built Digital Systems.
€550 EUR em 14 dias
5,5
5,5

Hello there, we are a team of Full stack developers and we can build your SaaS application as per your complete satisfaction. Please, send me a message to discuss the work and finish in no time. Thanks Ashish Kumar from Coding Jobs On-line.
€1.000 EUR em 7 dias
5,7
5,7

Hi, I can build this AI Phone Assistant SaaS as a real, production-ready VoIP + AI platform, not just a demo. I’ve worked on API-first SaaS systems, multi-tenant architectures, AI integrations, and subscription billing, and I understand the technical and compliance requirements for an EU/Germany market product. How I’d approach this MVP: - Telephony: Twilio / Sipgate / Placetel (based on cost + German number quality) AI Stack: - STT: Whisper / Deepgram - TTS: Natural voice (ElevenLabs / Azure / similar) - LLM: OpenAI or EU-friendly alternative - Backend: Laravel - Frontend: Vue.js + Tailwind Css Billing: Stripe subscriptions, metered usage, invoices Core focus: reliable call handling, editable AI prompts per customer, call logs, transcripts, GDPR basics I will deliver: - Fully working MVP (AI calls + dashboard + billing) - Clean, documented source code (Git) - Deployment & handover docs - Optional server deployment Estimated timeline: ~6–8 weeks for MVP Pricing: milestone-based or fixed (open to discussion) I will give you 1 month of free support. Looking forward to discussing the architecture and roadmap. Best regards, Kader Full-Stack SaaS & AI Developer
€1.000 EUR em 40 dias
5,1
5,1

Hello chriss1305, I am Vishal Maharaj, with 20 years of experience in PHP, Mobile App Development, Node.js, and SaaS. I have carefully reviewed the project requirements for the AI Phone Assistant SaaS Development. To achieve the project goals, I propose to develop a robust AI-driven phone assistant platform with features such as natural language conversations, call handling, AI-driven call flow, telephony integration, webhooks for call events, AI & speech technology integration, customer dashboard, billing & subscriptions, modern frontend design, and a scalable backend architecture. I will utilize technologies like React/Vue, Node.js, and Laravel to ensure a responsive and efficient solution. I am confident in delivering a fully functional MVP within the estimated timeline and meeting all the specified requirements. Let's discuss further details and initiate the chat. Cheers, Vishal Maharaj
€500 EUR em 5 dias
5,8
5,8

Hello With a wealth of experience in AI Development, Mobile App Development, and proficiency in Node.js and PHP, I bring forth a well-rounded skillset to nurture this project. My proven ability to architect and develop applications from concept to deployment while implementing best practices for code quality and performance optimization will be invaluable in creating a solid and scalable platform. I have led development teams and mentored junior developers, ensuring that only the highest quality products are delivered. My passion for creating exceptional user experiences will align excellently with your project's goal to build an AI phone assistant SaaS that goes beyond a simple website experience. Best Regards, Timothy B.
€1.000 EUR em 15 dias
4,8
4,8

Hello from Vienna, I'm a senior full-stack developer with extensive experience in AI SaaS platforms, VoIP systems (Twilio, SIP), and subscription billing (Stripe). My past work includes successful AI SaaS implementations managing complex voice workflows and multi-tenant architectures. **Approach:** - Build VoIP core using Twilio/Sipgate, with German speech AI (OpenAI + custom models) - Develop React dashboard for call rules, LLM prompts & billing - Implement GDPR-compliant data handling (EU hosting, opt-in recordings) - Deliver clean, multi-tenant SaaS architecture for future white-labeling Let's schedule a call to discuss your exact requirements and demo similar projects. Best regards, Daniel
€700 EUR em 30 dias
4,8
4,8

Hi there, I'm Kristopher Kramer from McKinney, Texas. I’ve worked on similar projects before, and as a senior full-stack and AI engineer, I have the proven experience needed to deliver this successfully, so I have strong experience in Twilio, SIP, SaaS, VoIP, Natural Language Processing, PHP, Node.js, Website Design, AI Development and Mobile App Development. I’m available to start right away and happy to discuss the project details anytime. Looking forward to speaking with you soon. Best regards, Kristopher Kramer
€500 EUR em 7 dias
4,9
4,9

Hi, I can do this. I am an experienced software developer with a strong background in building AI-driven SaaS platforms, particularly in VoIP and telephony APIs. I propose using a tech stack of Node.js for the backend, React for the frontend, and Tailwind CSS for responsive design. This will ensure a modern, scalable, and user-friendly application. For the MVP, I estimate a timeline of 8 weeks, focusing on core features such as AI phone assistance, call handling, and a customer dashboard. I have successfully integrated LLMs and subscription billing systems in previous projects, ensuring compliance with GDPR. I recommend using Twilio for telephony integration and Stripe for billing. I am committed to delivering a fully functional MVP, complete with source code and deployment documentation. Looking forward to discussing this further. Ashnasajid
€500 EUR em 3 dias
4,3
4,3

Hi, I’d be happy to help you build your AI Phone Assistant SaaS MVP. I have experience developing VoIP/telephony platforms, SaaS applications, and AI integrations, including LLM-powered workflows and speech-to-text/text-to-speech features. For this project, I’d implement: An AI phone assistant capable of handling calls, understanding intent, and taking messages or forwarding calls. Multi-tenant SaaS architecture with customer dashboards, phone number management, AI assistant configuration, and usage analytics. Subscription billing and invoicing via Stripe with plan management. GDPR-compliant data handling, including opt-in recordings and EU hosting. I’ll deliver a fully functional MVP, complete source code in Git, setup/deployment documentation, and a brief handover walkthrough. The architecture will be modular to allow for future white-labeling, CRM integrations, or mobile apps. I can provide references for previous SaaS/AI/telephony projects upon request and would be happy to discuss milestone-based delivery or a fixed-price approach. Looking forward to collaborating and bringing this platform to life.
€500 EUR em 7 dias
4,4
4,4

Hi, I am excited about the opportunity to develop the AI Phone Assistant SaaS. With over 10 years of experience in AI, VoIP, and SaaS platforms, I am well-equipped to build a robust solution that meets your specifications. I have a strong understanding of the tech stack you've indicated, including React, Node.js, and LLM integrations, ensuring the platform is responsive and GDPR-compliant. My previous projects include VoIP integrations and subscription billing systems, allowing me to deliver a reliable MVP within your desired timeline of 6–10 weeks. I would love to discuss the project further and explore how we can bring your vision to life. Best regards,
€500 EUR em 2 dias
4,2
4,2

Hello, WITH 8+ YEARS OF EXPERIENCE IN AI AND SAAS DEVELOPMENT, I UNDERSTAND THE CHALLENGE OF BUILDING A FULL-FEATURED, GDPR-COMPLIANT AI TELEPHONY PLATFORM THAT FEELS HUMAN AND RELIABLE. → Your MVP will handle calls automatically, provide natural language conversations, and manage transcripts efficiently, boosting customer satisfaction. → Multi-tenant architecture with subscription billing ensures scalable SaaS deployment and future-proofing for your brand in Germany/EU. Build a white-label capable AI Phone Assistant SaaS with AI-driven call handling, multi-tenant dashboard, VoIP integration, subscription billing, GDPR compliance, and optional call recordings. Your AI Phone Assistant needs a robust backend (Node.js/Python) integrated with VoIP APIs (Twilio/Sipgate) and LLMs for natural conversations. I will implement call flows, AI prompts, dashboards, subscription management, and GDPR-compliant features with unlimited UI revisions to deliver a professional, trustworthy SaaS experience. I’m ready to develop your AI Phone Assistant MVP with full functionality, scalable architecture, and seamless AI integration—let’s bring your SaaS vision to life. Best regards, Sushma
€300 EUR em 7 dias
5,0
5,0

Hi , I am a senior mobile developer with 12 years of experience who is good at Natural Language Processing, Website Design, SIP, AI Development, SaaS, Node.js, VoIP, Twilio, Mobile App Development and PHP. I 've checked your job description in detail and understood what you want. I would like to have a brief chat with you to discuss your project and start work. Best regards, Charonda
€555 EUR em 1 dia
3,7
3,7

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 — AI Phone Assistant SaaS Development . 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
€500 EUR em 5 dias
3,8
3,8

Hello, As an experienced software developer, I'm thrilled about your AI Phone Assistant SaaS project. With a background in ETL and automation using technologies like Apache Airflow, Spark, and Kafka, I specialize in handling large amounts of data efficiently. This expertise will be crucial for building the backbone of natural language processing system your project demands. My knowledge also extends to various voice and data transfer protocols such as SIP and VoIP, which will help in integrating Twilio, Sipgate, Placetel or similar platforms. Another key skill I bring is machine learning. I have substantial experience working with AI-language models like LLM that can help drive intelligent call flows while providing customizable prompts for each customer through the dashboard. Furthermore, my proficiency with TensorFlow combined with my natural affinity for Node.js and Python (FastAPI) make me well adept at implementing Speech-to-Text and Text-to-Speech functionalities your project requires. The result? A seamlessly integrated solution built on a clean, API-based architecture. Lastly, understanding the need of GDPR compliance for the project, being well-versed with key implications of GDPR like opt-in for recordings and data deletion without compromising system integrity makes me an asset to your team. With comprehensive technical skills supported by deep domain insights into Saas, VoIP telephony APIs including subscription billing Thanks!
€750 EUR em 6 dias
3,8
3,8

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