**Address** Rua Carlos Gomes, 1321, Centro \- Limeira, SP **What is the work environment like?** **At KaBuM!, we seek people passionate about technology, obsessed with agility, quality, and excellence in customer service. All opportunities are open to everyone, without distinction based on gender, gender identity, sexual orientation, race, ethnicity, religion, age, or disability.** **Responsibilities for this Opportunity** * **Architecture:** Apply and evolve the defined architecture (MVVM/MVI, Clean Architecture), focusing on modularization and decoupling code to ensure maintainability. * **Implementation:** Lead end-to-end implementation of complex features, ensuring efficient use of Kotlin and Jetpack Compose. * **Performance:** Actively monitor and perform tactical optimizations on key metrics such as App Start time, Frame Rate, and Memory usage. * Investigate and resolve complex bugs and technical bottlenecks, such as concurrency issues with Coroutines. * **Build/Testing Engineering:** Ensure the app has robust automated test coverage. Optimize and maintain CI/CD pipelines (Fastlane/GitHub Actions) and Gradle build time. * **Technical Leadership:** Serve as a technical reference for mid-level developers. Conduct extremely rigorous code reviews and promote technical pairing to elevate the team’s quality standards. * **Design System:** Implement and maintain Android library components, ensuring fidelity to Design/UX specifications. **Requirements** **Hard Skills** * Proficiency in Kotlin and the Android SDK. * Solid experience applying architectures for large-scale apps, with emphasis on Modularization and Dependency Injection (e.g., Koin). * Advanced proficiency in Jetpack Compose (state management, recomposition). * Proficiency in Kotlin Coroutines and Flow (including scope management and Cold/Hot streams). * Experience with automated testing (unit tests, instrumentation tests). * Ability to optimize build time and experience with build tools. **Preferred Qualifications** * Experience in e-commerce environments or high-transaction, high-load applications (e.g., Black Friday). * Experience with Kotlin Multiplatform (KMP). * Experience optimizing video libraries (e.g., ExoPlayer) and memory management. * Contributions to the Open Source community or technical speaking engagements. **Benefits** * Medical Assistance * Dental Assistance * Product Discount * Life Insurance * Meal Voucher **Additional Notes and/or Benefits** * Gympass * Totalpass * New Value * Clube dos Magalus * Prime Ninja * Ninja Academy **About the Organization** Founded in 2003, KaBuM! was one of the pioneers of e-commerce in Brazil and is now the largest technology-focused e-commerce platform in Latin America. Since its inception, the company has been built upon stories and achievements of a team obsessed with agility, service quality, delivery speed, and respect for consumers. With unbeatable prices and over 120,000 products in its catalog, KaBuM! consistently stays ahead of the curve, bringing the world’s best new releases to market first. It serves over 8 million customers, delivering to all regions of Brazil—across more than 5,000 cities. KaBuM! is among the most visited websites in the country and leads the ranking of virtual stores most recommended by Brazilian consumers in the technology segment*, backed by top internet evaluation indexes and quality certifications. Beyond e-commerce, KaBuM! is a major supporter of esports, having founded one of Brazil’s largest League of Legends teams—KaBuM! Esports—which has won four national championships and was the first Brazilian representative at the World Championship. * **Reference: CX Report comparison, evaluating 34 major Brazilian online retailers, conducted by IBOPE CONECTA and IBOPE DTM.** **Why work with us?** **At KaBuM!, we seek people passionate about technology, obsessed with agility, quality, and excellence in customer service. All opportunities are open to everyone, without distinction based on gender, gender identity, sexual orientation, race, ethnicity, religion, age, or disability.**