Senior Backend Engineer - Scalable AI Platform (Global)

LearnWise AI; Barcelona; On-site; EUR 75,000 - 110,000; Full time

Job summary

LearnWise AI is hiring a senior backend engineer who builds features that extend our products and tackles the hard platform problems behind them: integrations with systems we don't control, authentication and authorization in a multi-tenant product, and services that run in five regions. You design the solution, write it down, ship it safely, and stay with it in production.

This is a backend role close to AI product surfaces, not an AI/ML research role.

Qualifications

• 6+ years as a software engineer building and running production backend services.
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Responsibilities

• Build new product features from design to production rollout, with Product and Design.
• Integrate LMS/CRM/SIS data through a reusable integration framework, including writebacks.
• Evolve multi-tenant platform with organization hierarchies and RBAC.
• Scale infrastructure to handle 10x traffic spikes across regions (EU, US, CA, AU, UK).
• Occasionally lead technical initiatives and coordinate 2-3 engineers.

Skills

Backend engineering

Production systems

Python

TypeScript/Node

LMS/CRM/SIS integrations

English communication

Technical leadership

Tools

Python

FastAPI

MongoDB

AWS

Docker

GitHub Actions

Job description

LearnWise AI is hiring a senior backend engineer who builds features that extend our products and tackles the hard platform problems behind them: integrations with systems we don't control, authentication and authorization in a multi-tenant product, and services that run in five regions. You design the solution, write it down, ship it safely, and stay with it in production.

This is a backend role close to AI product surfaces, not an AI/ML research role.