Sopra Steria is a leading European consulting, digital services and software development company with around 56,000 employees in nearly 30 countries and more than 4,000 in Spain. We focus on people, training and professional development, and we are looking for a Senior Full-Stack Developer with strong Python and React experience to work across the full stack—from React + TypeScript frontends to FastAPI + Python backends and BigQuery data queries. The role also includes Low-Code form development, a Discrepancy Viewer for conflict resolution, Entity and Transitive Resolution engines, REST APIs and Pub/Sub, a visual graph explorer, and configuration management on AlloyDB with provisioning automation. Maintaining test coverage and participating in code reviews will be fundamental. Requirements: Advanced proficiency in React with TypeScript and Next.js; strong expertise in FastAPI with Python; extensive experience with SQLAlchemy, advanced SQL in BigQuery, AlloyDB/PostgreSQL, Pub/Sub, and Google Cloud Platform services (Cloud Run, BigQuery API, IAM, Secret Manager). Proficiency in testing with pytest, Vitest/Jest and Playwright, as well as Docker and GitHub Actions for CI/CD. English level at B2 or higher. What we offer: Permanent contract and full-time schedule. On-site role in Almussafes, Spain. 23 days of vacation. Ongoing training: technical, transversal and language skills; access to certifications, trainings from major technology partners, online platforms and more. Life and accident insurance. Flexible compensation options (medical insurance, childcare vouchers, transport

Sopra Steria is a leading European consulting, digital services and software development company with around 56,000 employees in nearly 30 countries and more than 4,000 in Spain. We focus on people, training and professional development, and we are looking for a Senior Full-Stack Developer with strong Python and React experience to work across the full stack—from React + TypeScript frontends to FastAPI + Python backends and BigQuery data queries. The role also includes Low-Code form development, a Discrepancy Viewer for conflict resolution, Entity and Transitive Resolution engines, REST APIs and Pub/Sub, a visual graph explorer, and configuration management on AlloyDB with provisioning automation. Maintaining test coverage and participating in code reviews will be fundamental. Requirements: Advanced proficiency in React with TypeScript and Next.js; strong expertise in FastAPI with Python; extensive experience with SQLAlchemy, advanced SQL in BigQuery, AlloyDB/PostgreSQL, Pub/Sub, and Google Cloud Platform services (Cloud Run, BigQuery API, IAM, Secret Manager). Proficiency in testing with pytest, Vitest/Jest and Playwright, as well as Docker and GitHub Actions for CI/CD. English level at B2 or higher. What we offer: Permanent contract and full-time schedule. On-site role in Almussafes, Spain. 23 days of vacation. Ongoing training: technical, transversal and language skills; access to certifications, trainings from major technology partners, online platforms and more. Life and accident insurance. Flexible compensation options (medical insurance, childcare vouchers, transport