Hello, I'm

Juan Sobrino Engineering Leader

12+ years crafting scalable frontend architecture.
Currently defining technical standards for 30+ developers at Inditex.

Professional photo of Juan Sobrino

About Me

I'm a Frontend Architect and Engineering Leader with over 12 years in tech, driven by curiosity and a passion for building products that truly matter.

My career began building mobile apps, then expanded into frontend development. For most of my journey, I grew within EdTech—leading a complex SaaS platform with an LMS, CMS, school administration system, and native mobile app, serving tens of thousands of concurrent users daily. Now at Inditex, I define technical standards and lead architecture decisions across 50+ repositories, supporting ~30 developers in the logistics sector.

I'm passionate about product. I enjoy contributing to both discovery and delivery, working closely with product managers and designers to understand user problems and shape solutions from their earliest stages. While my technical strengths are frontend-focused, I have solid backend knowledge and actively participate in defining data models and system architecture.

I thrive when surrounded by people who share that same restless drive to learn and make a difference. Today, AI is central to my workflow—from coding assistants like Claude Code to leveraging LLMs for management tasks and building AI-powered features into products.

Experience

2026 - Present

Frontend Architect

Inditex via BCNC

Logistics sector: 50+ frontend repositories, ~30 frontend developers. Defining technical standards, stack, and best practices.

  • Technical debt analysis and improvement strategies for complex, high-availability systems
  • Maintaining cross-team shared libraries
  • Leading frontend architecture migrations and defining the technical stack
  • Creating agentic workflows to automate processes and accelerate feature development
ReactTypeScriptMicrofrontendsAI Agents
2022 - 2025

Tech Lead & Engineering Manager

Oneclick

Led engineering team of 14+ developers for EdTech SaaS platform serving 200K+ monthly active users.

  • Scaled team from 6 to 14+ engineers
  • Implemented agile methodologies and delivery processes
  • Led product discovery and technical planning
  • Mentored senior developers into tech lead roles
ReactReact NativeNode.jsAWS
2020 - 2022

Tech Lead

Oneclick

Technical leadership for mobile and web applications, driving architecture decisions and code quality.

  • Designed and implemented core platform architecture
  • Established coding standards and review processes
  • Led migration to modern React patterns
ReactReact NativeTypeScriptPrisma
2014 - 2020

Frontend & App Developer

Oneclick

Full-stack development with focus on frontend technologies and mobile applications.

  • Built core features of the EdTech platform
  • Developed mobile applications with React Native and Java
  • Implemented real-time collaboration features
JavaScriptReactReact NativeJava
2012 - 2013

Web Developer

Visual Publinet

Started professional career developing web applications and gaining foundation in web technologies.

  • Developed client websites and web applications
  • Gained expertise in frontend fundamentals
HTMLCSSJavaScriptPHP

Skills & Expertise

Technical Skills

  • JavaScript Expert
  • TypeScript Expert
  • React Expert
  • React Native Expert
  • HTML & CSS Expert
  • Tailwind Advanced
  • AWS Advanced
  • Sentry Advanced
  • New Relic Advanced
  • Playwright Advanced
  • React testing library Advanced
  • Node.js Intermediate
  • Prisma Intermediate
  • MySQL Intermediate

Architecture & Leadership

  • Frontend architecture at scale (microfrontends, monorepos)
  • Technical standards and best practices definition
  • Technical debt analysis and migration strategies
  • Cross-functional team leadership
  • Team mentoring & coaching
  • High-performance team development
  • Agile methodologies
  • Discovery & delivery collaboration

AI Agents & Automation

Claude Code

Daily use for development workflows

GitHub Copilot

Code assistance and pair programming

Custom Migration Agents

Large-scale codebase transformations

End-to-end AI Workflows

Ticket intake, requirements, implementation, testing, review

Spec-Driven Development

Custom SDD framework adaptation

Get in Touch

I'm always interested in discussing new opportunities, technical challenges, or simply connecting with fellow professionals.

Based in Spain