Full-Stack IVR & AI Developer (Telnyx, ChatGPT, Docker)

We are looking for a skilled and self-driven developer who can single-handedly design, build, and maintain a smart, AI-enabled IVR system. This system will integrate Telnyx Programmable Voice, OpenAI/ChatGPT (or Amazon Polly/Whisper), and Google My Business data. You will be responsible for end-to-end development—from server setup on Hetzner (Docker) to creating a user-friendly admin panel for multiple store locations.

If you are passionate about VoIP, containerized deployments, AI-based speech technologies, and enjoy working on innovative telephony solutions, we’d love to hear from you!

Responsibilities
IVR System Architecture & Development

Design, implement, and maintain a multi-location IVR using Telnyx Programmable Voice (webhooks/call control).
Set up call routing logic, handling both voice commands (speech-to-text) and DTMF (keypad) inputs.
Speech-to-Text & Text-to-Speech Integration

Integrate OpenAI/ChatGPT or Amazon Polly/Whisper for conversational IVR, dynamic responses, and language support.
Pre-generate and cache audio files for store greetings/marketing messages.
Google My Business Data Handling

Develop a background service or cron job to fetch and update store details (hours, address, etc.) for use in dynamic IVR prompts.
Cache data to minimize external API calls.
Voicemail & Queue Management

Implement a queue system for callers on hold, including marketing messages.
Set up voicemail recording, transcription (via STT), and auto-emailing to store owners.
Outbound SMS

Utilize Telnyx Messaging API to send directions or marketing texts to callers who opt in.
Capture and store phone numbers in a database for future marketing campaigns (with compliance considerations).
High Availability & Failover

Configure Docker-based deployment on Ubuntu (Hetzner).
Set up a secondary failover server or floating IP for continuous operation if the primary server goes down.
Admin Panel / GUI

Create a web-based admin dashboard (React, Vue, or Angular + Node.js/Express backend) to manage store settings, greetings, marketing messages, voicemail emails, etc.
Implement user roles (multi-tenant access) so different store owners can log in and manage their own data.
Testing & Maintenance

Write unit/integration tests for stability.
Monitor call volumes, handle concurrency, optimize performance, and troubleshoot production issues.
Qualifications
Technical Skills

Strong experience with Node.js (Express or similar) OR Python (FastAPI) for backend development.
Proficiency in Docker (Docker Compose or Kubernetes a plus) for containerized deployments.
Experience with VoIP/Telephony APIs (Telnyx, Twilio, or similar).
Knowledge of Speech-to-Text and Text-to-Speech technologies (OpenAI, Amazon Polly, Google Cloud STT).
Frontend development skills (React, Vue, or Angular) for building the Admin GUI.
Familiarity with databases (PostgreSQL or MySQL) for multi-tenant data management.
System Architecture & DevOps

Comfortable setting up Ubuntu servers on Hetzner and configuring SSL (Cloudflare or Let’s Encrypt).
Experience with CI/CD, load balancing, failover, and high-availability architectures.
Soft Skills

Ability to work independently and take full ownership of the project from concept to deployment.
Good communication skills in English, both written and verbal.
Problem-solving attitude—you enjoy tackling new challenges and optimizing solutions.
Preferred Experience

Hands-on with CRM integration, multi-language IVR solutions, or large-scale telephony projects.
Experience with PCI compliance and secure handling of sensitive data.
Tools & Technologies You’ll Work With
Node.js / Express (or Python / FastAPI)
Docker & Docker Compose
Telnyx Voice & Messaging APIs
OpenAI / ChatGPT, Amazon Polly, or other STT/TTS solutions
PostgreSQL or MySQL for data storage
Nginx, Let’s Encrypt/Cloudflare for SSL & reverse proxy
Google My Business / Google Maps APIs
Git for version control