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Hi, I’m Marco Eduardo Ferreira Junior, a Senior Android Engineer based in Recife, Brazil, with 7+ years of experience building large-scale mobile apps for fintech, e-commerce, and logistics. I specialize in Kotlin, Jetpack Compose, Clean Architecture, and modern CI/CD practices, with a strong focus on code quality, testing, and performance. I thrive in cross-functional teams, mentoring peers and delivering practical, maintainable solutions. I’m actively exploring AI automation using n8n and multi-channel integrations to streamline workflows and unlock new opportunities.…Hi, I’m Marco Eduardo Ferreira Junior, a Senior Android Engineer based in Recife, Brazil, with 7+ years of experience building large-scale mobile apps for fintech, e-commerce, and logistics. I specialize in Kotlin, Jetpack Compose, Clean Architecture, and modern CI/CD practices, with a strong focus on code quality, testing, and performance. I thrive in cross-functional teams, mentoring peers and delivering practical, maintainable solutions. I’m actively exploring AI automation using n8n and multi-channel integrations to streamline workflows and unlock new opportunities.

Marco Eduardo Ferreira Junior

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Hi, I’m Marco Eduardo Ferreira Junior, a Senior Android Engineer based in Recife, Brazil, with 7+ years of experience building large-scale mobile apps for fintech, e-commerce, and logistics. I specialize in Kotlin, Jetpack Compose, Clean Architecture, and modern CI/CD practices, with a strong focus on code quality, testing, and performance. I thrive in cross-functional teams, mentoring peers and delivering practical, maintainable solutions. I’m actively exploring AI automation using n8n and multi-channel integrations to streamline workflows and unlock new opportunities.…Hi, I’m Marco Eduardo Ferreira Junior, a Senior Android Engineer based in Recife, Brazil, with 7+ years of experience building large-scale mobile apps for fintech, e-commerce, and logistics. I specialize in Kotlin, Jetpack Compose, Clean Architecture, and modern CI/CD practices, with a strong focus on code quality, testing, and performance. I thrive in cross-functional teams, mentoring peers and delivering practical, maintainable solutions. I’m actively exploring AI automation using n8n and multi-channel integrations to streamline workflows and unlock new opportunities.

Available to hire

Hi, I’m Marco Eduardo Ferreira Junior, a Senior Android Engineer based in Recife, Brazil, with 7+ years of experience building large-scale mobile apps for fintech, e-commerce, and logistics. I specialize in Kotlin, Jetpack Compose, Clean Architecture, and modern CI/CD practices, with a strong focus on code quality, testing, and performance.

I thrive in cross-functional teams, mentoring peers and delivering practical, maintainable solutions. I’m actively exploring AI automation using n8n and multi-channel integrations to streamline workflows and unlock new opportunities.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

Portuguese

Fluent

English

Advanced

Spanish; Castilian

Beginner

Work Experience

Senior Android Developer at DBC Company

August 1, 2024 - October 13, 2025

Optimized transaction flows, reducing support requests by 80%. Led code reviews and ensured test coverage.

Senior Android Engineer at CI&T

August 1, 2024 - Present

Developed a critical mobile feature preventing a potential US$3M revenue loss. Applied Jetpack Compose and Clean Architecture with MVVM for scalable features. Collaborated with international teams in agile environments.

Android Developer at Americanas Delivery

December 1, 2021 - October 13, 2025

Led a team of 5 Android developers on a high-growth e-commerce project. Migrated legacy app to Kotlin + MVVM, improving maintainability. Implemented Crashlytics and Bitrise CI/CD, optimizing release cycles. Contributed to record-breaking sales via UX and performance improvements.

Android Developer at Build Care

August 1, 2020 - October 13, 2025

Built an inspection app reducing workflow from 30 to 14 days. Improved UX through user feedback and optimized layouts.

Teaching Assistant at UFR PE

July 1, 2019 - October 13, 2025

Taught Android development, Spring Boot, and web basics. Mentored students in mobile best practices and clean code.

Android Developer at ABA Global Education

April 1, 2019 - October 13, 2025

Created a parent-school communication app independently. Reduced support calls by implementing a feedback-driven UX.