Diego Felipe Lassa

Senior Android Developer

diegoflassa@gmail.com (19) 99496-0948 LinkedIn GitHub

Professional Summary

Senior Android Developer with over 15 years of technology experience, specializing in scalable architectures (MVVM, MVI, KMP) and native development with Kotlin, Jetpack Compose, and XML. Passionate about transforming complex challenges into innovative solutions, proven by leading UI modernization and optimizing logistical operations that resulted in 40% less code and 35% less development time in the apps. I seek to apply my expertise in Clean Code, testing, and collaboration to drive the success of cutting-edge teams and products.

Key Achievements

🚀 40% code reduction with Jetpack Compose implementation
⚡ 35% less development time with custom Design System
🤖 60% reduction in identification time with AI-powered classification app
📱 45% codebase reduction exploring Kotlin Multiplatform
🏆 15+ years of experience in mobile and desktop development

Technical Skills

📱 Mobile Development

Kotlin, Java, Android SDK, Jetpack Compose, XML

🏗️ Architecture

MVVM, MVI, Clean Architecture, OOP

🔧 Frameworks

Retrofit, Room, Hilt, KMP, LiveData, Coroutines

🛠️ Tools

Android Studio, Git, Firebase, Jira, UML

📋 Methodologies

Scrum, Clean Code, Modeling

Professional Experience

HAVAN – Senior Android Developer (Aug 2021 – Jun 2025)

Led the implementation of Jetpack Compose for UI modernization, reducing app code by 40% and improving maintainability.
Created a Design System Component Library (Compose and XML), cutting development time by 35% and ensuring a cohesive interface across all apps.
Conducted Proofs of Concept (POCs) with Kotlin Multiplatform (KMP), exploring new technological frontiers for unifying Android and Desktop app codebases, reducing the code base in 45%.
Developed and implemented an AI-powered product classification app, which reduced identification time by 60%, optimizing operational efficiency.

Freelance Developer – D’Lassa (Apr 2019 – Aug 2021)

Developed Android apps on demand
Delivered projects such as LittleDropsOfRain and The Heroesbook
Worked autonomously with focus on scalable solutions

Android Specialist – Venturus (Jul 2018 – Mar 2019)

Maintained and fixed bugs in Motorola devices
Ensured performance and stability of embedded software

Consultant and Instructor – D’Lassa (Jan 2018 – Jul 2018 / Oct 2013 – May 2016)

Provided consulting and training in Java and Android development
Mentored and trained developers

Android Developer – Datasafer (Jan 2017 – Jan 2018)

Converted ownCloud API for Android use
Created a chatbot as a side project

Java Developer – Art IT (Feb 2013 – Jun 2013)

Upgraded the billing system for Net Campinas
Integrated with Embratel, Tim, and Claro systems

Android Developer – Instituto de Pesquisas Eldorado (Feb 2011 – Dec 2012)

Developed Android apps for phones and tablets
Customized builds and delivered projects for Estácio de Sá
Created a File Manager and Launcher for beginner users
Participated in MDM (Mobile Device Manager) project with enterprise remote control
Used Agile methodologies (Scrum)

Freelance Developer – Libraport Campinas (Sep 2009 – Jun 2010)

Developed cargo tracking and internal management system
Worked with Java and Google Web Toolkit (GWT)

Software Developer – HST Software Solutions (Jan 2007 – Jan 2009)

Developed Wosa drivers for banking self-service terminals (ATMs)
Maintained interfaces and managed component version control
Participated in architecture and implementation of internal libraries and drivers in C++

Junior Developer / Modeling Manager – UNISAL-Borland Center (May 2002 – Dec 2006)

Developed systems using Borland tools (Delphi 7, C++ Builder 6, SQL)
Managed requirements with Caliber RM, versioning with StarTeam, and UML modeling with Together
Participated in five projects, one as project manager, with focus on OOP, distributed systems and WebServices

Teacher / Monitor – ETEC (Escola Técnica de Campinas) (Jul 2002 – Dec 2006)

LabView instructor and programming monitor (Java, Delphi, C++)

Junior Developer – Trópico – Advanced Communication Systems (Jan 2001 – Jun 2002)

Worked on software development, maintenance and implementation
Firsthand experience with Mentor Graphics tools

Education

Centro Universitário Salesiano de São Paulo (UNISAL) – BSc in Computer Science (2006)
Escola Técnica de Campinas (ETEC) – Technical Degree in Mechatronics (2000)

Languages

English: B2 level (upper-intermediate) – Fluent reading, intermediate writing and speaking skills.
German: A1 level (beginner) – Basic knowledge for reading and technical vocabulary.