(Senior) Full-Stack Engineer | Frontend-leaning | Platform Team | Remote Spain

Description: Join the Platform team as a Full Stack Engineer with a frontend focus, building foundational product experiences and services. Contribute to product development through technical excellence, user-centered thinking, and cross-functional collaboration. Requirements: 5+ years of experience in building product applications across the stack with a strong frontend focus. Proficient in TypeScript and modern frontend frameworks; able to contribute to NestJS backend services. Experience with Design Systems, including building or maintaining custom ones for senior roles. Familiarity with unit and E2E testing (Vitest, Playwright, or equivalents). Understanding of UI/UX principles and commitment to building elegant, accessible interfaces. Ability to operate in ambiguity and translate loosely defined ideas into working software. Experience in a startup or scaleup environment. Nice to have: exposure to fintech or regulated domains, experience with zod, and data visualizations. Benefits: Competitive salary plus equity. Customizable benefits package (wellbeing, sport, mobility, food, etc.). 28 days of vacation, plus 2 company days and local public holidays. Remote work setup with quarterly trips to Berlin. Access to a great tech and work setup. Work with a diverse team of 130+ from 40+ countries.