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
Ai Engineer - €* A Year - Remote Barcelona, Kingdom Of Spain, ES
#J-***-Ljbffr

📌 Ai Engineer (Barcelona)
🏢 Stott And May
📍 Barcelona