chris villarroel
@chrisvillarroel
Senior Mobile Engineer & Tech Lead specializing in React Native, TypeScript, and AI-assisted delivery.
SpainWhat I'm looking for
Soy Senior Mobile Engineer & Tech Lead con 10+ años en desarrollo móvil y frontend, especializado en React Native y TypeScript. Me enfoco en construir experiencias sólidas en iOS y Android, liderando decisiones de arquitectura, calidad y entrega.
He liderado arquitectura móvil end-to-end: navegación, gestión de estado, estándares de código, code reviews y procesos de CI/CD. Desarrollo con Expo y publico aplicaciones en App Store y Google Play, integrando observabilidad y estabilidad mediante Sentry/Crashlytics sobre GCP/Firebase.
Mi experiencia incluye banca digital a escala, donde optimicé rendimiento, reduzco fallos en producción y acelero el ciclo de release. En proyectos recientes, reduje 35% los reportes de errores con monitoreo continuo y corrección proactiva, y también impulsé mejoras de performance (por ejemplo, -30% en TTI) mediante optimizaciones de render y code-splitting.
Me importa elevar la calidad con hábitos sostenibles: ingeniería asistida por IA para acelerar delivery (p. ej., Claude Code), automatización y mentoring a junior/mid. Busco entornos donde pueda seguir liderando equipos técnicos y llevando productos móviles a estándares de excelencia.
Experience
Work history, roles, and key accomplishments
Senior Mobile Engineer & Tech Lead
E-CODE
Jan 2026 - Present (5 months)
Led the architecture and development of cross-platform mobile apps with React Native and TypeScript on Firebase/GCP, defining navigation, state management standards, and code review processes. Accelerated delivery with AI (Claude Code) and implemented CI/CD and release workflows while mentoring junior to mid engineers.
React Native Developer
FEMSA Salud
Jun 2024 - Jan 2026 (1 year 7 months)
Led development from scratch of a digital banking app using React Native and Expo with TypeScript, optimized for iOS and Android performance. Implemented Firebase/GCP analytics and stability tooling and reduced production error reports by 35% through proactive monitoring and fixes.
Software Developer
Mercado Libre
May 2023 - May 2024 (1 year)
Improved web performance by 30% in Time to Interactive (TTI) using code-splitting and render optimizations. Developed and maintained an internal web platform for advertising systems in a high-scale environment with cross-functional product, backend, and UX collaboration.
React Native Developer
Banco BICE
Jun 2021 - May 2023 (1 year 11 months)
Owned end-to-end development of a banking app in React Native, including architecture, navigation, and state management; launched to App Store and Google Play and surpassed 50,000 downloads in 6 months. Built Node.js services and integrations for critical banking features and optimized transfer flow, reducing wait times by 33% (3.5s → 3.0s) and increasing consumer credit sales by 18% after launch.
Full-stack Developer
Kibernum Chile
Feb 2019 - Jun 2021 (2 years 4 months)
Built a banking application using React, React Native, and Node.js, integrating Firebase and REST APIs. Delivered full-stack functionality spanning frontend development and backend API integration.
Education
Degrees, certifications, and relevant coursework
chris hasn't added their education
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Tech stack
Software and tools used professionally
Availability
Location
SpainAuthorized to work in
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