Senior Full-Stack Engineer (Remote) – AI Fintech

Upstart seeks a Senior Software Engineer to lead the Unsecured Installments frontend and backend interfaces, owning large-scale projects from end-to-end. You will shape architecture, APIs, and data models while partnering with product, design, and backend teams to deliver high-quality borrower experiences. You will mentor engineers, drive testing and observability, and contribute to AI-enabled improvements in development workflows, aiming to expand access to credit with reliable, scalable