Thiago Nunes Monteiro Email & Phone Number

São Paulo, Sp, Br

Development and architecture of the first library in Brazil to certify all offline Android fiscal hardware solutions in the market. Worked with dependency isolation to ensure the central code remained independent of the hardware used. Developed USB communication with various types of Android devices in the market and created adaptable unit tests for each hardware supplier scenario.𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: - Created the first Android library in the country to integrate all fiscal devices. - Responsible for structuring the entire architecture of the project. - Developed unit tests covering the entire operation. - Participated in meetings with managers and engineers from all the leading suppliers in the fiscal solutions market. - Responsible for deploying the library to production and maintaining it with new releases. - Created a structure with Work Manager for long-duration calls, which allowed us to handle older fiscal solution hardware with limited processing power.Skills Developed: GraphQL, Android, Kotlin, Room, USB Host, Work Manager, SharedPreferences, Retrofit, REST API, Coroutines, Flow (Hot Flow and Cold Flow), Databinding, MVVM Architecture, Unit tests with Mockito and Junit, Integration tests and UI Tests with Espresso and Robolectric, CI/CD.

Porto Alegre, Rio Grande Do Sul, Brazil

Development and support of applications that serve thousands of users across Brazil in the field of payments via external hardware. Enhanced skills in developing solutions to specific bugs that arise after prolonged periods of stress caused by access from thousands of users. Worked extensively with applications certified for various payment hardware on the market, integrating with libraries and point-of-sale hardware.𝐀𝐜𝐡𝐢𝐞𝐯𝐞𝐦𝐞𝐧𝐭𝐬 𝐚𝐧𝐝 𝐑𝐞𝐬𝐩𝐨𝐧𝐬𝐢𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: - Worked on restructuring and rebuilding a new architecture within the project, employing strategies based on SOLID principles and Clean Architecture. - Led the migration from greenDao to the Room library in the company’s main product. - Responsible for implementing security restructuring following standards set by an audit, which involved code obfuscation, two-factor authentication, and using tokens in requests. - Fixed a critical bug that caused a request to download 15,000 lines of unnecessary data every 5 seconds. After optimization, the request was reduced to downloading only one necessary entity every 15 seconds, cutting data volume from 15,000 to 50 lines. This resulted in a significant performance boost and eliminated crashes related to the bug.Skills improving: Android, Kotlin, Room, Work Manager, SharedPreferences, Retrofit, REST API, Coroutines, LiveData, Flow, Hot Flow, and Cold Flow, Data Binding, MVVM Architecture, Dependency Injection with Koin, Material Design 1 and 3, Unit tests with Mockito and Junit, Integration tests, and UI Tests with Espresso and Roboelectric, and CI/CD. Experience in Agile, Scrum, and Kanban.

Mato Grosso, Brazil

I developed Android apps for an agribusiness company, providing solutions for cotton plantations. The app was used by thousands of employees across the state of Mato Grosso, Brazil.I extensively worked on fully offline applications using the Room library and optimized system synchronization through query optimizations. I gained significant knowledge in WorkerManager and Foreground Services for periodic synchronization of the apps, as well as background services for monitoring scales and barcode reading portals.Skills improving: Android, Kotlin, Room, Work Manager, Service Foreground, SharedPreferences, Retrofit, API REST, Coroutines, Live Data, Flow, Hot Flow and Cold Flow, Databinding, Jetpack Compose, MVVM Architecture, Dependency Injection with Dagger and Hilt, Material Design 1 and 3, Unit tests with Mockito and Junit, Integration tests and UI Tests with Espresso and Roboeletric, CI/CD.Experience with Agile, Scrum and Kanban.

Rio Grande Do Sul, Brazil

Development of Android applications for product sales and maintenance for various companies. The applications involved integration with SAP and were designed to work offline, saving data locally using SQL databases and utilizing OData.I worked with major clients such as: Nissan, FCC and Fortlev.Skills improving: Kotlin, Java, SQL, Retrofit, API REST, Coroutines, Live Data, Databinding, MVVM Architecture, Dependency Injection with Dagger, Material Design, Unit tests with Junit and Mockito.Experience with Agile, Scrum and Kanban.

Rio Grande Do Sul, Brazil

Development of Android applications for internal logistics, truck logistics, inventory control, and store replenishment. Additionally, provided support for these applications and developed new features.Skills improving: Android, Kotlin, Java, SQL, Retrofit, API REST, Firebase ML Kit, Optimization for old android APIs, Material Design, GITLAB. I had experience with PHP and iOS development using Swift as well.

Gravataí E Região, Brasil

Bachelor Of Engineering, Software Engineer

Técnico Em Eletrônica, Electrical And Electronics Engineering, Formado Em Técnico Eletrônico Pela Instituição Senai De Gravataí.