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Backend AI Engineer: Cortex, RAG & Scalable AI Infra

Quadrivia Ai
Barcelona, Spain
19 days ago

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Compensation
€70,000.0 - €110,000.0
Working hours
Regular working hours
Job source
www.jobleads.com

Tech stack

Application Programming Interfaces (APIs) Artificial Intelligence ARM Architecture Python (Programming Language) Backend Fastapi

Job description

Quadrivia AI is hiring for a backend-focused role responsible for building and operating Cortex, the core AI architecture behind Q. You’ll own architecture, APIs, reliability targets, and the services on top, including automated audits, patient simulators, and a robust retrieval layer.

Requirements

Ideal candidates have expert Python with FastAPI and production observability, experience with agent patterns, and prior startup exposure.

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.jobleads.com

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

Moments

Explore playlists

1:52 min

Structuring and scaling the backend engineering team

Stefan Lingler Stefan Lingler +1 · Coffee With Developers

3:33 min

Connecting frontends via a FastAPI proxy backend layer

Saoussen Chaabnia Saoussen Chaabnia · Europe 2026 Virtual

1:30 min

Arm architecture and growing compute requirements for machine learning

Andrew Wafaa Andrew Wafaa · WWC 2025

1:24 min

Building client-facing AI agents for engineering teams

Alfonso Graziano Alfonso Graziano · Coffee With Developers

1:12 min

Choosing TypeScript for complex backend applications

Maximilian Otto Maximilian Otto · WWC 2024

48 sec

Transitioning from scaling GPU workloads to building coding agents

Alex Laubscher Alex Laubscher · WWC 2025

Videos

See all
Unleashing the Full Potential of the Arm Architecture – Write Once, Deploy Anywhere thumbnail
19:39
WWC 2024 • almost 2 years ago

Unleashing the Full Potential of the Arm Architecture – Write Once, Deploy Anywhere

Andrew Wafaa

Intro to FastAPI thumbnail
42:19
WWC 2022 • about 4 years ago

Intro to FastAPI

Sebastián Ramírez

Developing the Backend with Stefan Lingler, CTO at Shpock thumbnail
24:02
Coffee With Developers • about 8 years ago

Developing the Backend with Stefan Lingler, CTO at Shpock

Stefan Lingler, Thomas Pamminger

Agentic AI - From Theory to Practice: Developing Multi-Agent AI Systems on Azure thumbnail
26:35
WWC 2025 • 12 months ago

Agentic AI - From Theory to Practice: Developing Multi-Agent AI Systems on Azure

Ricardo

An Architect’s guide to reducing the carbon footprint of your applications thumbnail
55:18
LIVE • over 3 years ago

An Architect’s guide to reducing the carbon footprint of your applications

Ricardo Sueiras Sueiras

Building and Deploying Multi-Agent Systems with ADK and Vertex AI thumbnail
1:08:35
Europe 2026 Virtual • about 1 month ago

Building and Deploying Multi-Agent Systems with ADK and Vertex AI

Saoussen Chaabnia

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