Senior Mobile Engineer – Native iOS, Android

Castillians

Senior Mobile Engineer designing and developing innovative applications for Play Store and AppStore. Optimizing performance and collaborating globally while enhancing security measures.

Posted 6/27/2026full-timeRemote • 🌎 Anywhere in the WorldSeniorWebsite

Tech Stack

Tools & technologies

AndroidiOS

About the role

Key responsibilities & impact

Designing and developing mobile applications for Play Store and AppStore
Ensuring optimal performance and user experience
Writing clean and testable code
Collaborating with colleagues to innovate app functionality
Managing and troubleshooting client-reported issues
Staying updated with best practices in mobile app coding

Requirements

What you’ll need

Senior level mobile development experience
Proficiency in iOS and Android development
Strong knowledge of mobile application performance optimization
Experience in security enhancements for mobile apps
Knowledge of encrypted user data updates and PIN request implementations

Benefits

Comp & perks

Work from anywhere in the world
Collaborate with global teams
Innovative app functionality

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

mobile application developmentiOS developmentAndroid developmentperformance optimizationsecurity enhancementsencrypted user data updatesPIN request implementationsclean codetestable code

Soft Skills

collaborationproblem-solvinginnovation