Senior Backend/Full-Stack Engineer (AI Product)

Joppy

Full-time Informática y tecnología
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Location
madrid, comunidad de madrid, Spain
Posted
June 14, 2026

Job Description

One of the fastest-growing AI-native startups that collaborates with Joppy is looking for a Senior Backend/Full-Stack Engineer (primarily backend) to help build our conversational, agentic AI platform, integrations and APIs. You'll architect and scale production-grade systems supporting hiring, onboarding, and employee experiences in real enterprise environments, working with LLMs and autonomous agents as part of the stack.

What You'll Do:

  • Build and scale production-grade backend systems
  • Implement end-to-end features
  • Make pragmatic technical decisions balancing innovation with reliability
  • Collaborate with product and business stakeholders
  • Ship reliable software that performs at scale

Technical Skills:

  • Testing, logging, monitoring, performance optimization
  • Data storage (SQL and NoSQL) and async message queues (Celery + RabbitMQ / Redis)
  • High-throughput, low-l...