Senior Fullstack Developer - C# and React - Madrid

Shift is the leading AI platform for insurance. Shift combines generative, agentic, and predictive AI to transform underwriting, claims, fraud, and risk management—driving operational efficiency, exceptional customer experiences, and measurable business impact. Trusted by the world's leading insurers, Shift delivers AI where and when it matters most, at scale and with proven results.

Our culture is built on innovation, trust, and a drive to transform the insurance industry through our SaaS platform. We come from more than 50 different countries and cultures, and together we are creating the future of insurance.

Our Engineering Team is at the core of the value we offer to our customers. We solve complex problems by working collaboratively across squads and teams throughout the organization. If you are excited by solving technical challenges, this is the right place for you! What you'll do : As a Senior Fullstack Engineer, your technical knowledge and autonomy will enable you to build complete designs for our applications and features. You will contribute to a UI for data collection and review, develop APIs to automate decision-making, and build corresponding frameworks. Performance, scalability, and quality are key challenges to address to ensure high-quality code delivery. You will collaborate with teammates—including software engineers, data scientists, QA, UX, and product managers—to continually improve our agile development process. We work with modern technologies and encourage exploration of new market innovations.

Our tech stack :

• Frontend : React, Redux, TypeScript, Vanilla Extract, LESS, Dev Container with Vite
• Backend : C#, MSSQL, Elasticsearch
• IDE : Your choice - Rider, VS Code, or Visual Studio + Resharper
• Cloud : Microsoft Azure
• Toolchain : GitHub Enterprise, GHAS, GH Copilot + coding agent
• CI / CD : GitHub Actions, TeamCity, Cypress, GH Packages (npm, NuGet), Octopus
• Collaboration : Slack, Jira, Confluence

What you bring :

Recruitment Process :

LI-RH1

To support our employees, we offer a competitive benefits package, including :

Additional benefits may vary by country. Intern and Apprentice positions are also eligible for some benefits—please ask your recruiter for details.

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