Senior Mobile Engineer (iOS + Android)

Powered by Breezy

AccelOne provides custom software development and design services for companies across the U.S. and Latin America. Built on core principles of transparency, communication, and accountability, we deliver high-quality, scalable solutions that support our clients’ long-term success.

Our client is a U.S.-based leader in digital experience personalization. Their platform powers real-time, data-driven experiences for top global retail and e-commerce brands. Operating at scale across international markets, they leverage advanced analytics and decisioning engines to optimize customer engagement and performance.

As part of a new expansion phase, the client is adding native mobile capabilities to strengthen cross-channel personalization and deliver richer customer experiences across iOS and Android.

We are seeking a Senior Mobile Engineer with strong, hands-on experience in both native iOS and Android development.
This is a hybrid and highly technical role ideal for a developer who is comfortable owning end-to-end mobile features—from architecture to deployment—within a fast-paced, data-driven ecosystem.

You will collaborate with cross-functional teams (Product, Engineering, UX, Data, and Professional Services) to build high-quality mobile components that integrate seamlessly with the client's personalization engine and backend systems.

This role is perfect for someone who enjoys autonomy, problem-solving, clean architecture, and bridging the gap between mobile development and large-scale backend services.

• Design, develop, and maintain native mobile applications for iOS (Swift) and Android (Kotlin/Java).

• Build performant, modular, and well-tested mobile features aligned with product requirements.

• Integrate mobile apps with backend APIs, personalization engines, and data workflows.

• Ensure consistent UI/UX and platform-specific best practices across iOS and Android.

• Write clean, maintainable, reusable code with a strong focus on scalability and reliability.

• Collaborate with Product, UX, Data, and Engineering teams throughout the SDLC.

• Break down complex requirements into independent technical tasks.

• Participate in Agile ceremonies, code reviews, and technical design discussions.

• Research and integrate modern mobile frameworks, libraries, and engineering best practices.

• Optimize app performance, loading times, memory usage, and battery consumption.

• Ensure application stability across multiple devices, OS versions, and screen sizes.

• 5+ years of experience in professional mobile development.

• Strong proficiency in Swift (iOS) and Kotlin/Java (Android).

• Experience building and publishing apps in the App Store and/or Google Play.

• Deep understanding of native mobile architectures, patterns (MVC, MVVM, Clean Architecture), and SDKs.

• Experience integrating with RESTful APIs and mobile networking stacks.

• Strong debugging and performance optimization skills.

• Familiarity with mobile CI/CD, testing frameworks, and automated pipelines.

• Experience collaborating with distributed teams in Agile environments.

• Strong communication skills and English fluency.

• Experience in personalization platforms, data-driven mobile features, or large-scale consumer apps.

• Knowledge of mobile analytics, deep linking, push notifications, and A/B testing frameworks.

• Familiarity with AWS, Firebase, Cloud Functions, or similar cloud/mobile infrastructure.

• Experience with CI/CD tools for mobile (Fastlane, Bitrise, GitHub Actions).

• Exposure to UX principles and mobile component design.

• 100% Remote Work across LATAM.

• Competitive compensation aligned with seniority and technical depth.

• Opportunities for continuous learning: certifications, workshops, and training programs.

• A collaborative, transparent, and people-first culture.

• The chance to contribute to a major global-scale personalization platform.