Senior AI-Driven Voice Platform Engineer (Remote Spain)

Concentric Recruitment

España

Remote

EUR 90,000 - 120,000

Full time

5 hours ago

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Job summary

Concentric Recruitment is partnering with a client building AI-driven communication products. They seek a Senior/Principal Software Engineer to own features end-to-end on a TypeScript/Python stack and contribute to AI pipelines, LLM orchestration, and real-time systems for voice agents.

You will build scalable APIs and services for real-time interactions, collaborate with founders and senior engineers, and help shape the platform's architecture, reliability, and performance in a fully remote

Qualifications

7+ years of production experience with modern web stack.
Experience with AI coding agents such as Claude Code, Cursor or Codex.
Real Product mindset and ability to work autonomously.
Comfortable with Docker, SQL, testing and scalable architecture.
Fluent Spanish.

Responsibilities

Building scalable APIs and services for real-time voice interactions.
Developing product features end-to-end with React, TypeScript and AI infrastructure.
Integrating LLM, STT and TTS workflows into production.
Working on agentic and multi-agent workflows.
Improving architecture, observability, testing and engineering quality.
Working directly with the founders and senior team to shape the platform.