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Experienced Full Stack AI Virtual Receptionist Developer – Receptia, Powered by OpenAI (ChatGPT)

Remote, USA Full-time Posted 2026-06-16

Join arenaflex in Revolutionizing Customer Service with AI-Powered Virtual Receptionists

At arenaflex, we're pushing the boundaries of innovation in the realm of artificial intelligence and customer service. We're on a mission to create a seamless, intuitive, and personalized experience for businesses and individuals alike. As we embark on this exciting journey, we're seeking an exceptional developer to join our team and help shape the future of Receptia, our cutting-edge virtual receptionist powered by OpenAI (ChatGPT).

About arenaflex

arenaflex is a forward-thinking organization that thrives on creativity, collaboration, and a passion for innovation. Our team is comprised of talented individuals from diverse backgrounds, united by a shared vision to harness the power of technology and AI to drive meaningful change. We're committed to fostering a culture of inclusivity, respect, and continuous learning, where our employees can grow, thrive, and make a lasting impact.

The Role

As an Experienced Full Stack AI Virtual Receptionist Developer, you'll play a pivotal role in the development and deployment of Receptia, our AI-powered virtual receptionist. Your expertise will be instrumental in creating a seamless, real-time experience for users, leveraging the capabilities of OpenAI (ChatGPT) to provide intelligent, contextual, and personalized responses. Your responsibilities will include:

Phase 1 Features:

+ Receive VoIP/SIP calls and integrate OpenAI (ChatGPT) API for intelligent handling + Implement real-time speech recognition using Whisper, Deepgram, or equivalent + Develop natural text-to-speech capabilities using ElevenLabs, Azure TTS, or equivalent + Automate detection of Québec French and Canadian English + Design a simple web interface to manage scripts, responses, and logs + Implement audio and text conversation logging + Option to transfer to a human operator

Phase 2 Features (Optional):

+ Integrate CRM systems for seamless customer management + Develop appointment scheduling capabilities using Google Calendar or Outlook + Implement automatic SMS/email sending + Implement caller recognition for returning customers

Requirements

To succeed in this role, you'll need:

Proven experience

with OpenAI API integration

Strong knowledge

of VoIP/SIP and telephony integrations

Expertise

in advanced STT/TTS systems

Low-latency real-time development experience

*

Skilled

in multilingual FR/EN handling

Familiarity

with preferred technologies, including: + OpenAI API (mandatory) + STT/TTS: Whisper, Deepgram, Azure, ElevenLabs + VoIP/SIP: Twilio, Asterisk, or equivalent + Backend: Python, Node.js + Frontend: React.js, Vue.js + Database: PostgreSQL, MySQL, MongoDB

Ideal Candidate Profile

We're looking for a seasoned developer with a passion for AI, customer service, and innovation. If you're a creative problem-solver with a strong background in software development, we encourage you to apply. Your expertise in OpenAI API integration, VoIP/SIP, and STT/TTS systems will be invaluable in shaping the future of Receptia.

What We Offer

As a member of our team, you'll enjoy:

Competitive compensation

and benefits package

Opportunities for growth and professional development

*

Collaborative and dynamic work environment

*

Access to cutting-edge technologies and tools

*

Flexible work arrangements

to suit your needs

Recognition and rewards for outstanding performance

Estimated Timeline

We anticipate a 4-8 week timeline for Phase 1, with the possibility of extending the project based on client needs and feedback.

How to Apply

If you're ready to join the arenaflex team and contribute to the development of Receptia, please submit your application, including your resume, cover letter, and portfolio. We can't wait to hear from you! [Apply to this job](https://www.upwork.com/freelance-jobs/apply/Experienced-Full-Stack-AI-Virtual-Receptionist-Developer-Receptia-Powered-OpenAI-ChatGPT_~021955060182158911106/?utm_campaign=google_jobs_apply&utm_source=google_jobs_apply&utm_medium=organic) Apply for this job

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