Javier Rodríguez Viñas.

Technical leadership of the frontend for an industrial data analytics platform (steel rolling mills) designed for plant operators and business-side users.

• Built from scratch a Next.js platform interfacing (via REST APIs & WebSockets) with Big Data systems (Spark, Kafka, MinIO) for failure prediction and medium-term self-correction
• Implemented real-time observability dashboards, solving the dual challenge of guiding user attention via subtle burst animations and meticulously managing performance to avoid saturating the React main thread. A consistently snappy experience was not an extra, but key for building user trust in the product
• Designed and built a complete Design System (inspired by Shopify Polaris) using progressive disclosure: extremely powerful and expressive technical UI that never feels overwhelming
• Developed 'physical' animations replicating analog control panels as a design nod to the industrial context this product aims to digitize
• Built a type-safe, procedural system for generating complex data tables on demand (sorting, filtering via criteria pattern, pagination). The challenge wasn't just building tables, but enabling anyone (even coding agents) to spin up new ones effortlessly and consistently

Fullstack Engineer within the Cybersecurity division, collaborating extensively across both frontend and backend to build secure digital products.

• Spearheaded the development of a Self-Sovereign Identity (SSI) Android application, managing the full vertical from the Kotlin implementation to the creation of a bespoke Design System
• Collaborated on both frontend and backend architectures, narrowing the gap between security requirements and user experience
• Implemented efficient data anonymization algorithms in Python backends (NumPy, Pandas) for sensitive datasets
• Built and optimized security-critical SPAs using React and Vue, and mentored interns to raise the team's code quality standards

Productization of a powerful CLI-based data anonymization system (part of a European Cybersecurity Project) to make it accessible to external users.

• Designed the visual identity and implemented critical workflows in a Vue/TypeScript SPA, transforming a CLI-only tool into a modern web product
• Significantly improved usability and visibility, enabling external stakeholders to leverage powerful data anonymization capabilities without technical friction