Senior Fullstack Developer C# and React Spain

Senior Fullstack Developer - C# and React - Spain

Spain - Madrid; Spain - Remote

Shift is the leading AI platform for insurance. Shift combines generative, agentic, and predictive AI to transform underwriting, claims, and fraud and risk - driving operational efficiency, exceptional customer experiences and measurable business impact. Trusted by the world's leading insurers, Shift delivers AI when and where 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 lies at the core of the value we offer to our customers. We solve complex problems by working not only within our squads, but also by working collaboratively with other teams across the organization. If you are excited by solving complex technical challenges, this is the right place for you!

What you\'ll do...

As a Senior Fullstack Engineer, your technical knowledge and autonomy will let you build complete designs for our applications and features. You will contribute to a UI to collect and review information, to APIs that automates decision making and build to corresponding framework.

Performance, scalability and quality are key challenges to solve in order to deliver and review code. You are part of a team and collaborate with your teammates (software engineers, data scientists, QA, UX, product managers) to constantly receive and give feedback and improve the agile development process.

We work with modern technologies and always encourage our team to explore what’s new in the market.

• Frontend : React / Redux / TS / Vanilla Extract / LESS / Dev Container with Vite
• IDE : your choice - Rider, VS Code, or Visual Studio + Resharper
• Foundational toolchain : GitHub Enterprise, GHAS, GH Copilot + coding agent
• CI / CD : GitHub Actions / TeamCity, Cypress, GH Packages (npm, NuGet), Octopus

What you bring...

Recruitment Process

To support our permanent, full-time employees at every stage of their careers and lives, we provide a competitive total rewards and benefits package. Here are the global benefits we’d like to highlight :

Additional benefits may be offered by country - ask your recruiter for more information. Intern and Apprentice position are eligible for some of these benefits - ask your recruiter for more details.

Shift supports a diverse and inclusive workforce. We welcome applications from all qualified individuals. Shift is committed to providing reasonable accommodations for qualified individuals with disabilities in our application and employment process. For accommodation requests, please email

Please be aware of scammers and only trust correspondence from emails ending in shift-technology.com. We will never ask for banking information or personal identification numbers as part of our recruitment process.

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