Senior Fullstack Developer

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, 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 ofην 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 automate decision-making and build to a 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 At least 5 years of experience in software development Frontend experience — any JS framework (ideally React) You are a true fullstack : frontend is part of your job, as much as backend Your projects are beautifully designed and cleanly written You are dynamic, curious, and eager to learn, always looking to expand your fields of expertise You are proactive and take ownership of your work You want your work to have an impact : rather than a cog, you see yourself as the engine Fluency in English Recruitment Process 30‑minute video interview with our Talent Acquisition Specialist 1‑hour online test 2 x 1‑hour technical interviews, one with a Backend dev and one with a Frontend dev 1‑hour final interview with the Hiring Manager Benefits ?? Flexible remote and hybrid working options Competitive Salary and a variable component tied to personal and company performance Company equity Multiple Learning and Development opportunities, including Focus Fridays—a half‑day each month to focus on learning and personal growth Generous PTO and paid holidays 2 MAD Days per year (Make A Difference Days for paid volunteering) Additional benefits may be offered by country — ask your recruiter for more information. Intern and Apprentice positions are eligible for some of these benefits — ask your recruiter for more details. At Shift we strive to be a diverse and inclusive workforce. We welcome applications from and hire people who will contribute to the diversity of our company, without regard to race, color, religion, marital status, age, national or ethnic origin, physical or mental disability, medical condition, pregnancy, genetic information, gender ECU31 identity or expression, sexual orientation, or other non‑merit criteria. Shift Technology is committed to providing reasonable accommodations for qualified individuals with disabilities in our application and employment process. Should you require accommodation, please email and we will work with you to meet your accessibility needs. Please be aware of scammers and only trust correspondence that comes from emails ending in “shift-technology.com”. We will never do initial outreach to you via Whatsapp/Text/SMS, never ask for banking information or personal identification numbers (ex. Social Security Number) as part of our recruitment process. Shift Technology does not accept unsolicited CVs from recruiters or employment agencies in response to the Shift Technology Careers page or a Shift Technology social media post. Any unsolicited CVs, including those submitted directly to hiring managers, are deemed to be the property of Shift Technology. Accepted file types: pdf, doc, docx, txt, rtf #J-18808-Ljbffr