We are seeking a Senior React & Node Developer for our client. It's a SaaS platform for supplier intelligence and value-chain transparency, used by around 2,500 companies in 50+ countries. You’ll work on their Business Partner Transparency product inside a serverless, enterprise-grade platform, building software that automates complex compliance workflows. Involvement: full-time Location: Madrid, on-site (hybrid). Relocation bonus is available. Only for candidates with EU citizenship or an equivalent right to work in Spain (visa sponsorship not available) Requirements: 5+ years of experience as a software developer 3+ years of experience with Node.js and React.js 3+ years of experience with TypeScript Familiarity with AI-assisted coding is a must Strong product mindset - proven in-house experience in product companies Clear and effective communication in English — advanced ability to discuss business tasks, justify decisions, and communicate issues. Good self-presentation is also essential for upcoming client calls. Adaptability and flexibility — the ability to onboard onto a project promptly after accepting it and start delivering results quickly.