Job Title Senior AI Interface Developer – Cloud Telephony, LLM & CRM Integrations Project Overview We are building a next-generation AI Interface Platform that connects: Cloud Telephony (AI voice calls) CRM systems Backend business systems Large Language Models (LLMs) WhatsApp, Email & other third-party APIs The platform will act as a central AI brain + orchestration layer for business communication, workflow automation, and CRM operations. This is a serious, long-term product with SaaS and white-label potential. Key Responsibilities You will be responsible for end-to-end technical execution, including: AI Interface Development Build AI voice & chat interface layers Handle conversation flow, interruptions & fallback logic Implement context handling and memory management Cloud Telephony Integration Integrate cloud telephony APIs (call handling, IVR replacement) Manage inbound/outbound calls Webhook handling (call start, end, failure) STT & TTS integration LLM Integration Integrate LLM APIs (OpenAI / similar) Design prompt structures (system, persona, business logic) Token usage optimization & cost control Hallucination and error handling CRM & Backend Integration Connect AI with CRM systems (lead creation, call logs, status updates) API integration with backend systems (inventory, pricing, orders) Two-way data sync logic Third-Party API Integration WhatsApp Business API Email & SMS gateways Logistics / document generation APIs Automation & Workflow Engine Build event-driven workflows Conditional logic (if/else) Human handoff and escalation triggers Required Skills Must-Have Strong backend development experience REST API & Webhook integration Cloud telephony API experience LLM integration experience Workflow automation logic Good to Have Node.js / Python / Laravel experience Experience with CRM systems Knowledge of STT/TTS pipelines SaaS / multi-tenant architecture exposure AI cost optimization experience Technology Stack (Preferred) Backend: Node.js / Python / Laravel APIs: REST, Webhooks LLM: OpenAI or equivalent Telephony: SIP / Cloud telephony APIs Database: MySQL / PostgreSQL Messaging: WhatsApp API, Email Deployment: AWS / GCP / VPS Deliverables Working AI Interface Platform Telephony + LLM integrated system CRM & backend API integration Workflow automation engine Source code + documentation Deployment & handover support Project Duration Initial phase: 6–10 weeks Long-term support & enhancements possible Budget Fixed price or milestone-based (to be discussed) Competitive budget for the right expertise Confidentiality NDA mandatory All source code ownership transfers to us Selection Process Shortlisted freelancers may be asked to: Share similar past work Explain telephony + LLM integration experience Discuss approach to AI workflow handling Why Work With Us Real product, not a demo Long-term roadmap (SaaS & white-label) Clear scope and decision-making Opportunity to become long-term tech partner How to Apply Please include: Relevant AI / telephony / LLM projects Your preferred tech stack Estimated timeline Any architecture suggestions