Senior Python Engineer

About the Position

We are seeking a Senior Python Engineer to join our team and help build and maintain the Software Freshness service backend that generates "freshness" reports for microservice products, with results displayed in Backstage via a custom plugin.

Responsibilities

• Design and develop scalable backend services
• Integrate with internal and external REST APIs
• Build data pipelines and report-generation backends
• Work with Kubernetes and Argo Workflows
• Utilize Docker for container workflows and GitLab CI/CD pipelines
• Understand software supply chain security concepts
• Implement and maintain testing with pytest and static analysis tools
• Handle JSON report schemas, data validation, and file-based artifact stores
• Optional: Experience with Backstage plugins (TypeScript/React) or willingness to contribute to the frontend plugin

Requirements

• Strong Python development (3.12+), comfortable with type hints, dataclasses, ABC pattern, async
• Experience building data pipelines or report-generation backends that aggregate data from multiple REST APIs
• Working knowledge of Kubernetes and Argo Workflows
• Familiarity with container workflows: Docker, building production images, GitLab CI/CD pipelines
• Understanding of software supply chain security concepts: CVEs, CVSS scoring, vulnerability lifecycle, package versioning (semver)
• Experience with pytest (mocking, fixtures, coverage), static analysis tools (mypy, ruff, pylint), and quality-gated CI
• Comfortable working with JSON report schemas, data validation (jsonschema/marshmallow/pydantic), and file-based artifact stores (JFrog Artifactory)
• Ability to work independently in a small team, follow existing code conventions, and contribute to architectural decisions

Nice to Have

• Experience with Backstage plugins (TypeScript/React) or willingness to contribute to the frontend plugin that consumes the reports the backend produces

We Offer

• Opportunity to work remotely from Madrid, Spain
• Join a dynamic and innovative team in the fintech sector

About the Company

[Company description if present]