Software Development Engineer II - Multichannel Agents

About the role

Today a single agent may take a phone call, answer a WhatsApp message, pick up a chat on a customer's website, or join a video session — and it has to behave like the same agent everywhere: same knowledge, same business rules, same memory of who the customer is and what they asked for five minutes ago on a different channel.

What you'll do

• Build and own channel integrations — WhatsApp Business Platform (Cloud API), telephony (SIP/PSTN via carriers and CPaaS providers), the embeddable web chat widget
• Design the unified conversation layer: a channel-agnostic session, message and identity model so the agent runtime sees one conversation regardless of where it came…
• Handle multimodal input and output: text, voice notes, live audio streams, video, images, documents, location, interactive messages (buttons, lists
• Build the realtime plumbing: WebSockets/WebRTC for live audio and video, streaming responses to the widget, and the hooks into the voice pipeline (STT, TTS
• Make delivery reliable: idempotent webhook ingestion, retries and dead-letter handling, ordering guarantees, delivery/read-status tracking

What you need

• 3–6 yrs of experience
• Node.js
• SQL
• Python
• TypeScript
• Java
• Go
• Any graduate

Good to have

• LLMs
• Performance testing
• Kafka
• Redis
• RabbitMQ
• NoSQL