Senior FullStack Developer (Python & React)

Description

**Company Description** Why work at Sopra Steria? Because working at Sopra Steria also means feeling **Sopra Steria**. We are a leading European consultancy, digital services, and software development company, with nearly 56\.000 employees across nearly 30 countries and over 4\.000 in Spain. We focus on people—on their training and professional development—which drives our constant growth and improvement. We are passionate about digital transformation, and just like you, we seek the best adventure. We want your everyday experience to become your greatest source of inspiration: to learn, contribute, have fun, grow—and above all, enjoy it to the fullest. If you want to join a "**Great Place to Work**" team, keep reading! **Job Description** We are seeking a **Senior FullStack Developer** with experience in **Python** and **React**, capable of working across the full technology stack—from React \+ TypeScript interfaces to FastAPI \+ Python backends and BigQuery queries. Responsibilities include Low-Code form development, Discrepancy Viewer for conflict resolution, Entity and Transitive Resolution engines, REST and Pub/Sub APIs, a visual entity graph explorer, and AlloyDB configuration management with automated provisioning. Additionally, maintaining comprehensive test coverage and participating in code reviews will be essential. **Requirements** **What are we looking for?** * Advanced proficiency in React with TypeScript and Next.js. * Advanced proficiency in FastAPI with Python. * Extensive experience with SQLAlchemy, advanced SQL in BigQuery, AlloyDB/PostgreSQL, Pub/Sub, and GCP (Cloud Run, BigQuery API, IAM, Secret Manager). * Proficiency in testing using pytest, Vitest/Jest, and Playwright, as well as Docker and GitHub Actions for CI/CD. * English level B2\. **Additional Information** **What do we offer you?** * Permanent contract and full-time schedule * On-site work model in Almussafes * 23 vacation days * Continuous training: technical, transversal, and language skills. Access to certifications, training from major Technology Partners, online platforms—and much more! * Life and accident insurance * Eligibility for our flexible compensation plan (health insurance, childcare vouchers, transportation, meal vouchers, and training) * Access to Privilege Club, offering attractive discounts from leading brands * Personalized and detailed onboarding. We support you every step of the way so you feel \#soprano from day one. * Office with dedicated leisure spaces—where work and fun go hand in hand! * Camaraderie and a positive atmosphere—we truly believe in the power of unity. And most importantly… You’ll have the opportunity to develop your professional career with us: Together, we’ll create a personalized career plan. You’ll receive training, set goals, and undergo regular follow-up to ensure we achieve them together. We listen to your priorities—and fight for them. Your voice matters here! Join us and be part of something bigger! *The world is how we shape it* At Sopra Steria, we are committed to building a diverse and inclusive environment, evaluating each application objectively based on competencies and experience. We firmly believe that diversity of experiences and perspectives fuels our innovation.