AI Engineer – Remote (Barcelona) | €100,000

About the Role

We are looking for a hands-on AI Engineer to own and evolve the core “brain” service that drives a cutting-edge AI product. This role spans architecture, development, optimization, and production operations of real-time, multi-agent LLM systems.

Role Overview

As an AI Engineer, you will design, build, and operate low-latency, real-time text and voice agent systems. You will be responsible for multi-agent orchestration, advanced reasoning approaches, RAG engineering, and evaluation-driven development to ensure production-grade quality and performance.

Key Responsibilities

- Design, build, and operate low-latency real-time text and voice agent systems
- Implement multi-agent orchestration patterns (planner–executor–critic, routing, shared memory)
- Apply advanced reasoning methods (ReAct, Chain-of-Thought, Tree-/Graph-of-Thoughts where appropriate)
- Lead RAG engineering with strong grounding, evaluation, and observability
- Drive evaluation-based development with monitoring, tracing, and CI/CD gating




- Ship production-grade Python services using FastAPI under strict latency and quality requirements

Minimum Qualifications

- 5+ years of experience in ML or backend engineering in production environments
- Deep expertise in Python, FastAPI, asyncio, and production observability
- Experience with low-latency text and/or voice systems (LiveKit, Pipecat, WebRTC, or similar)
- Hands-on experience with LLM systems, agent patterns, and evaluation-driven workflows
- Prior startup experience

Tech Stack Highlights

Python, FastAPI, asyncio, Redis, Postgres, vector databases, WebRTC/LiveKit, SIP gateways, Docker, Terraform, Kubernetes, OpenTelemetry, DeepEval, GCP

What We Offer

- Work on state-of-the-art real-time AI agent technology in healthtech
- Highly collaborative, senior technical team
- Fully remote role based in Barcelona
- Fun off-sites and strong developer ergonomics

If you are interested please email your CV to for immediate consideration.

📌 Ai Engineer - €100.000 A Year - Remote (Barcelona)
🏢 Jobrapido, Stott and May
📍 Barcelona