Back End Developer

Backend Engineer | AI Start-up | | Python / GO | 7-Month fixed-term Contract

Join a European deep-tech leader in quantum and AI.

A well-funded, fast-growing company backed by major global investors with its groundbreaking technology is already transforming AI, compressing large language models by up to 95% and cutting inference costs by 50–80%.

This is your chance to be part of a team often described as a “quantum-AI unicorn in the making.”

This is a Hybrid opportunity working out of Zaragoza.

Required Qualifications

• 2–5 years of experience developing and maintaining backend systems in Python or Go .
• Strong understanding of RESTful API or gRPC design, versioning, and performance optimization.
• Experience with Docker and basic familiarity with Kubernetes for deploying scalable services.
• Solid understanding of relational databases (PostgreSQL / MySQL) and schema design.
• Experience integrating or automating workflows across multiple systems (data, CI / CD, ML).
• Proficiency with Git, testing frameworks, and CI / CD pipelines (GitLab, GitHub Actions).
• Experience with AWS or cloud-based deployment environments.
• A product-oriented mindset — able to turn R&D scripts or prototypes into stable, usable APIs or microservices.

Preferred Qualifications

Perks & Benefits :

Interested? Apply directly through LinkedIn, or send your CV to

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