Backend Software Developer
A fantastic opportunity for a driven Backend Software Developer to join fast-growing deep-tech company, who provide hyper-efficient software to global companies across finance, energy, manufacturing and cybersecurity to gain an edge with quantum computing and artificial intelligence.
**This is initially a Fixed Term Contract Until June 30th 2026 - Hybrid from 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.
Bonus Experience
* Experience with ML workflow orchestration (Flyte, Airflow, MLflow, or Kubeflow).
* Exposure to LLM inference/deployment tools (vLLM, Hugging Face Hub, NVIDIA NIM, or Triton).
* Experience building or integrating benchmarking, evaluation, or data automation pipelines.
* Demonstrated ability to collaborate with product and design teams to define backend contracts that enable intuitive user experiences.
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