Senior Full Stack / Backend Engineer — Voice & AI



VoiceB | Fully Remote (Spain) | Engineering



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We're VoiceB. We're building the autonomous AI voice sales agent that's automating the last undigitized sales channel: the phone call. Top enterprise brands across telco, banking, insurance, energy and automotive are already using our platform to handle inbound B2C and B2B sales conversations end-to-end — qualifying, pitching, and closing without human agents.



We're profitable, growing fast, and just getting started. Now we're hiring a Senior Engineer to help us scale the core platform that powers it all.



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What you'll do



• Design and build core systems behind our autonomous voice agent platform — real-time voice pipelines, LLM orchestration, telephony integrations and CRM connectors.

• Own the voice infrastructure layer: Twilio, SIP trunks, WebRTC, and the real-time audio pl...