Senior Full Stack / Backend Engineer
Location
vitoria gasteiz, basque country
Job Type
Full-time
Category
Other-General
Posted
June 02, 2026
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 plumbing that makes a sub-second AI conversation feel hum...
VoiceB | Fully Remote (Spain) | Engineering
—
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.
—
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 plumbing that makes a sub-second AI conversation feel hum...