Android Engineer Senior

Igor Lacourt

Senior Android Engineer Kotlin & Jetpack Compose Performance Optimization Mobile

Architecture & CI/CD

Vitória, ES, Brazil ***********@*****.*** +55-27-992**-**** LinkedIn GitHub 1 GitHub 2 Summary

A Senior Android Engineer with 8+ years of experience building and optimizing large-scale mobile applications for global audiences. Proven expertise in driving significant performance improvements, such as leading initiatives at Pinterest that reduced application size and enhanced build pipelines. Passionate about creating high-quality, scalable solutions using modern Android technologies like Kotlin, Jetpack Compose, and Clean Architecture. Technical Skills

● Languages: Kotlin, Java

● Architectures: Clean Architecture, MVVM, MVI, MVP

● Frameworks & Libraries: Jetpack (Compose, ViewModel, Coroutines, Room, Hilt/Dagger), RxJava/RxKotlin, Koin

● CI/CD & DevOps: Jenkins, GitLab CI, GitHub Actions, Fastlane, Gradle, Shell Scripting

● Testing: JUnit, Mockito, Espresso, Robolectric

● Tools & Platforms: Android Studio, Git, Firebase, Jira, Confluence Professional Experience

BairesDev (at Pinterest) Senior Android Engineer April 2022 - Present

● Engineered an automated app size monitoring framework by merging a third-party vendor into the CI/CD pipeline. The initiative prevented a 15% increase in release app size by notifying automatically on GitHub pull requests regressions.

● Directed the app-wide architectural change from SharedPreferences to DataStore. Introduced a new data access interface and resolved involved cyclic dependencies with Dagger/Hilt, significantly refactoring the app's data persistence layer and improving its maintainability.

● Resolved a performance-degrading problem resulting from a third-party vendor tool. Collaborated with the Performance team to figure out the root cause, mitigate the impact, and phase out the tool increasing app start time by 200ms. Beyond Soluções Android Engineer June 2021 - April 2022

● Led the refactoring of three critical legacy modules to a modern MVVM architecture, increasing code testability by 40% and reducing crash rates by 5% in those areas.

● Implemented a comprehensive testing suite with JUnit and Espresso, boosting unit test coverage from 20% to 65% and preventing regressions in the CI/CD pipeline. B2W Digital Android Developer August 2020 - June 2021

● The Brazil’s largest ecommerce app.

● Developed and maintained features for a large-scale e-commerce application with over 10 million active users, focusing on performance and user experience.

● Rebuilt the checkout flow interface using modern UI principles and integrated with RESTful APIs, resulting in a 5% increase in checkout conversion rates. Will Bank Android Developer September 2019 - August 2020

● Key contributor to the initial development and launch of the Will Bank app, delivering core financial features under aggressive deadlines that enabled a successful MVP release to over 100,000 users in the first quarter.

● Delivered pixel perfect screens to match the new product identity.

● Optimized application startup time and key transaction flows, improving performance by 20% based on Firebase Performance Monitoring metrics. Education

Bachelor of Computer Engineering FAESA University Centre, Vitória, Brazil 2012 - 2019 Android Developer Nanodegree Udacity 2017 - 2019

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