We are Merlin Digital Partner , a leading IT & Digital talent acquisition consultancy with over 10 years of experience. We have scaled industry giants such as Wallapop, Glovo, Banc Sabadell, and Sulzer, among others. Focused on humanizing and streamlining recruitment, our mission is to transform companies by connecting them with top-tier talent. We pride ourselves on diving deep into our partners' realities, understanding not just their technical needs, but their core essence. One of our rapidly growing partners is looking for a Senior Full Stack Developer . They are a deep-tech company specializing in the certification and verification of digital data using Blockchain technology . Their platform ensures information authenticity, integrity, and traceability, with key applications in digital identity, regulatory compliance, and sensitive data management. The Mission You will design and build end-to-end digital applications based on an API-first architecture , ensuring seamless data management, system integration, and a robust user experience.



This role combines advanced backend capabilities with frontend development and a strong focus on data architecture. Key Responsabilities Architecture & Backend: Design and implement scalable APIs (REST / GraphQL) using Node.js. Define and evolve data models in Supabase (PostgreSQL). Model relational databases (normalization, integrity, optimization). Build modular, maintainable backend services. Manage authentication and access control (JWT, RBAC). Frontend & Experience: Develop high-performance interfaces using React / Next.js or similar stacks. Integrate APIs ensuring consistency and efficiency in data consumption. Define frontend patterns (state management, caching, SSR). Collaborate on product-oriented UX/UI decisions. Integration & Data: Integrate external systems (APIs, OAuth, IoT, third-party services). Design data flows (ETL, webhooks, synchronization). Guarantee data consistency and quality across systems. Quality & Dep

📌 Senior Fullstack Developer (Cataluña)
🏢 Merlin Digital Partner
📍 Cataluña