Only apply if you can architect AND build production AI communication systems. Not chatbot integrators. Not juniors. Not “API wrappers.” Killers only. What You Will Build You will be the lead engineer building InboxxHQ’s AI communication engine: 1. Voice AI Engine (Twilio Voice + Realtime LLM) AI that answers inbound phone calls Streams audio → STT → LLM → TTS → Twilio in real time Whisper messages + escalation logic Call routing + error recovery Production-grade, low-latency design 2. SMS + WhatsApp AI Engine Intent router Conversation state machine Memory layer (short/long-term) Booking/order flows Automated follow-up logic Webhooks + retry logic Multi-channel compliance (A2P, WhatsApp templates) 3. Reliability Layer Freeze detection Model fallback Queueing Logging + monitoring High-volume throughput (100k+ msgs/day) Required Deep Experience (Non-Negotiable) If you don’t have these, you won’t pass the first call: Twilio Programmable Voice Media Streams Webhooks SMS / A2P WhatsApp Cloud API Call flows Real-time audio AI / LLM Engineering OpenAI / Anthropic / Mistral Structured output Function calling Prompt engineering at scale Memory design Intent classification Backend Engineering FastAPI or Node Redis / queues Docker Event-driven architecture Scalable systems Testing + monitoring First 14 Days Deliverables You must be able to deliver: Week 1 SMS + WhatsApp AI MVP State machine + intent router Memory layer v1 Webhook endpoints + test flows Week 2 Twilio Voice prototype Real-time audio streaming to LLM AI answering calls + basic logic Error recovery + fallback If these timelines scare you — don’t apply. Who This Role Is For A senior engineer who has actually built AI communication systems from scratch. Someone who thinks in architecture, not “scripts.” A problem solver who moves fast and communicates clearly. Compensation Competitive. Roles open for full-time or contract. You’ll build the core engine of a platform scaling nationally. How to Apply Send: 3 links/screenshots to your past Twilio Voice / real-time AI work 1–2 paragraphs describing an AI state machine you built Your exact plan for the first 7 days Availability + timezone If you cannot provide these, do not apply.