Senior Full Stack Developer – AI Digital Platform

About Us

We are building a next-generation AI Digital Platform that combines voice-enabled conversational AI, telephony integration, and a lightweight CRM into one seamless system.

This is a high-impact, hands-on role where you’ll help architect and build production-grade systems that span AI, real-time telephony, and modern SaaS web applications.

Role Overview

As a Senior Full-Stack Developer, you will take ownership of critical components across our stack — from the CRM frontend/backend to the AI management orchestration system and its integrations. You will collaborate closely with our AI/ML engineers (who focus on STT/LLM/TTS models) and infrastructure team, ensuring that data, APIs, and workflows are robust, scalable, and reliable.

You will thrive if you enjoy working in high-performance, real-time systems and have experience bridging frontend usability with backend orchestration.

Key Responsibilities

- Backend & API Development

- Build and maintain FastAPI/Node.js services powering the AI Management System (call orchestration, dialogue state, outcome extraction).

- Design clean REST APIs and Webhooks for CRM, telephony, and automation integrations (e.g., n8n).

- Implement robust data models in PostgreSQL and caching/queuing via Redis.

- Frontend & CRM Development

- Lead development of the CRM operator console (React/Next.js).

- Create dashboards for lead management, call outcomes, and campaign analytics.

- Ensure intuitive UI/UX for sales teams monitoring AI calls.

- Systems Integration

- Integrate backend services with telephony (Asterisk/FreeSWITCH, SignalWire, Twilio) and real-time audio I/O (WebRTC/GStreamer).

- Connect AI pipeline outputs (STT/LLM/TTS) to CRM outcomes.

- Implement flexible adapters for direct CRM API connections and workflow automation via n8n.

- Scalability & Observability

- Optimize system performance for high-volume concurrent calls.

- Implement monitoring, logging, and alerting with Prometheus, Grafana, and Sentry.

- Ensure fault-tolerance and horizontal scalability of orchestration and web services.

- Collaboration & Leadership

- Work closely with AI developers (LLM, speech models) to ensure seamless integration.

- Participate in architectural reviews, code reviews, and mentoring junior developers.

- Contribute to the technical roadmap and best practices for CI/CD, testing, and security.

Key Qualifications – Must Have

- 7+ years of full-stack development experience.

- Strong expertise in Node.js and/or Python (FastAPI, asyncio).

- Proficiency in React/Next.js for frontend web apps.

- Solid experience with PostgreSQL and Redis (queues, caching, pub/sub).

- Hands-on experience with real-time systems (WebRTC, SIP/VoIP, or similar).

- Proven ability to design, build, and scale REST APIs and distributed systems.

- Strong understanding of DevOps in cloud environments (AWS/Azure, Docker, Kubernetes a plus).

- Familiarity with telephony stacks (Asterisk, FreeSWITCH, SignalWire, or Twilio).

- Experience integrating external SaaS APIs (CRMs, automation tools).

Nice to Have

- Exposure to AI/ML workflows (LangChain, LLM APIs, Whisper, TTS engines).

- Knowledge of real-time streaming frameworks (GStreamer, Kafka, WebSockets).

- Prior experience building high-throughput sales/communications platforms.

- Familiarity with feature flagging, A/B testing, and experimentation frameworks.

Why Join Us?

- Be a foundational engineer shaping a product at the frontier of AI voice agents and CRM platforms.

- Work with a small, agile team where your code ships fast and your ideas matter.

- Competitive compensation package

- Flexible, hybrid work culture with a strong focus on ownership and innovation.

This role is for someone who thrives in building complex systems end-to-end, enjoys solving real-time, distributed challenges, and wants to see their work directly power a live AI sales platform.

Please send a cover letter and salary expectations. NO PHONE CALLS PLEASE.