AI Engineer – Voice & Multimodal (Barcelona, On-site)

Juryo; Barcelona; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

Joining a rocket ship

Small, demanding team with great vibe

Freedom to do things your way

Unlimited tokens to build with tools

Job summary

Juryo is building an AI voice operating system for B2C law firms. We are looking for AI Engineers to own how our agents think, talk and decide, with real production calls and no demos.

You’ll design agent architecture and reduce latency, delivering natural, robust conversations in Spanish and English. You will stay on top of models, build reusable components, and ensure we ship reliable tools across voice and WhatsApp.

Qualifications

• You’ve built and shipped LLM-based products in production.
• Know how models fail: hallucinations, prompt injection, broken tool calls and how to fix.
• Able to code in TypeScript or Python and work with APIs/webhooks.
• AI native: you use coding agents daily and know when not to trust them.
• Fluent in English; Spanish is a big plus.

Responsibilities

• Design and improve agent architecture: prompting, tool calling, memory, multi-agent flows across voice and WhatsApp.
• Build evals and testing to measure agent performance before client notice.
• Push latency down and naturalness up in voice, including turn taking and speech recognition in Spanish and English.
• Turn learnings from Forward Deployed Engineers into reusable components for faster onboarding of new firms.
• Stay on top of models and providers and decide what goes into production.

Skills

LLM product shipping

Model failure handling

Coding with TS/Python

AI native developer

English fluency

Barcelona living

Tools

TypeScript

Python

APIs

Webhooks

Job description

Juryo is building an AI voice operating system for B2C law firms. We are looking for AI Engineers to own how our agents think, talk and decide, with real production calls and no demos.

You’ll design agent architecture and reduce latency, delivering natural, robust conversations in Spanish and English. You will stay on top of models, build reusable components, and ensure we ship reliable tools across voice and WhatsApp.