Overview Full-time contract with flexible hours. Fully remote (with one monthly in-person meeting in northern Italy). We are a fast-growing, innovative startup looking for a Backend Developer (all levels) to join our team and help us build AI agents. Your mission: create integrations that make our AI agent accessible as a voice assistant (via Twilio), and through email and WhatsApp. Responsibilities Design, develop, and maintain backend services and APIs Build integrations to connect the AI agent with external communication channels Voice: integrate telephony via Twilio (calls, speech input / output) Messaging: integrate with WhatsApp and email systems Implement and optimize real-time communication flows using WebSockets Ensure scalability, reliability, and security of backend services Collaborate with frontend and AI engineering teams to deliver seamless multi-channel experiences Requirements Core Tech Stack: Node.js, Hono (or similar frameworks like Express.js), WebSockets, TypeScript, Postgres (schema design, query optimization, migrations), REST APIs Integration Skills: Twilio (voice, SMS, call routing, WhatsApp), Email integration (like SMTP), Experience designing robust webhook flows and handling external APIs Bonus Skills: Experience or strong interest in AI / Context Engineering (OpenAI APIs, RAG systems), Docker, CI / CD pipelines, cloud services Event-driven architectures: RabbitMQ, etc. Soft Skills: Flexible and adaptable in a startup environment, strong problem-solving and debugging skills, passion for backend development and integrations, self-discipline for remote work, with openness to regular in-person meetings Location: Must be able to attend monthly in-person meetings in northern Italy What We Offer Space for fast professional growth Flexible and modern remote work environment Hands-on experience with cutting-edge technologies High-impact role: your work directly shapes our product Young, friendly, and motivated team How to Apply Ready to transform hospitality tech with us? Send us your CV! J-18808-Ljbffr