Job#: 3013995

Job Description:

Who We Are

Apex Systems Mexico is a delivery center specializing in mobile development, cloud engineering, and digital solutions for enterprise clients. We work with global teams to build modern, scalable, and high-performance mobile applications.

Position Overview

Apex Systems Mexico is seeking a Senior Android Developer with strong Flutter experience to design, build, and optimize cross-platform mobile applications. This role requires deep Android native expertise (Kotlin/Java), strong Flutter development skills, modern architectural practices, and the ability to collaborate closely with UX/UI, backend, and product teams.

The ideal candidate delivers polished user experiences, robust integrations, and highly performant mobile applications across platforms.

• Design, develop, and maintain cross-platform mobile applications using Flutter for both Android and iOS.
• Build reusable components, custom widgets, and scalable architectures (BLoC, Provider, Riverpod, MobX, etc.).
• Integrate backend services through REST APIs, GraphQL, or WebSockets.
• Optimize applications for performance, responsiveness, accessibility, and reliability.
• Implement CI/CD pipelines for mobile applications (Firebase, GitHub Actions, Bitrise, Codemagic).
• Ensure high code quality through unit tests, widget tests, and integration tests.
• Collaborate with UX/UI designers to translate visual designs into consistent, high-quality user experiences.
• Apply best practices in mobile security, data handling, and error management.
• Implement push notifications, deep linking, routing, and state management strategies.
• Participate in code reviews and mentor mid-level and junior developers.

• 5+ years of professional mobile development experience, including strong Android native experience (Kotlin/Java).
• 3+ years of hands-on Flutter development experience.
• Deep understanding of the Android ecosystem, lifecycle, navigation, permissions, storage, optimization, and device compatibility.
• Experience integrating REST/GraphQL APIs.
• Hands-on experience with Firebase (Analytics, Crashlytics, Messaging, Remote Config).
• Strong understanding of mobile architectural patterns such as Clean Architecture, MVVM, BLoC, Redux-like models, etc.
• Experience with automated testing in Flutter (unit, widget, integration).
• Experience implementing CI/CD for mobile applications.
• Experience publishing and maintaining applications on the Google Play Store.
• Proficiency with Git and collaborative development workflows.
• English proficiency (B2+ level) for communication with global teams.

• Experience delivering Flutter apps for iOS (Xcode, provisioning profiles).
• Basic knowledge of Swift or iOS native development.
• Experience with modularization or micro-frontend/mobile architectures.
• Familiarity with Flutter tooling and libraries:
  • Riverpod
  • Flutter Bloc
  • GetX
  • Firebase Cloud Functions
• Understanding of mobile accessibility standards (A11y).
• Proficiency using Flutter DevTools for performance profiling, debugging, and memory leak analysis.

• Excellent collaboration and communication skills.
• High level of ownership, autonomy, and problem-solving ability.
• Ability to make sound technical decisions and propose improvements.
• Detail-oriented and quality-driven.
• Proactive mindset toward learning and adopting modern mobile technologies.

Apex Systems is a world-class IT services company that serves thousands of clients across the globe. When you join Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including Great Place to Work® and Great Place for Women to Work® in Mexico.