About VoiceB We build autonomous AI voice agents that close and qualify sales for large B2C enterprises — telcos, energy providers, insurers, banks.

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Our agents already run live inside companies like Vodafone España and Holaluz, and were mid-rollout across an 8-market European deployment with Alpega/Teleroute.

Were a small team moving fast, and were building the commercial engine to match the product.

The role Were looking for a senior full stack engineer to join a small, high-ownership engineering team building the core VoiceB platform — the systems behind SuperVoice, SuperQualification, Memory, and our outcome tracking.

This is a remote role for someone based in Spain, working closely with our CTO and the rest of engineering.

What youll do Build and ship features across the platform: backend services, APIs, third-party integrations (Salesforce, HubSpot, Twilio, SIP/WebRTC),



and internal tooling Own features end to end — design, build, test, deploy, monitor Partner directly with the CTO and founders on architecture decisions as the platform scales Contribute to security and compliance hardening for enterprise clients What were looking for 4+ years of full stack experience, comfortable owning features end to end on a small, fast-moving team Strong in a modern JS/TS stack (React/Node or similar); comfortable with cloud infrastructure (AWS/GCP) Based in Spain, fully remote, able to overlap with Barcelona working hours Product-minded — you care about what gets built, not just how xqbhyrx Nice to have Experience with real-time or telephony systems (SIP, WebRTC, Twilio) Experience integrating LLMs or other AI/voice tooling into production systems Early-stage startup experience What we offer Competitive salary + equity Fully remote (Spain-based) Direct influence over the architecture of a pr

📌 Senior Full Stack Engineer — AI Voice Platform (Marzán)
🏢 The BIG Jobsite
📍 Marzán