Carlos Krueger

About

Senior Android Engineer with 7+ years of experience building native Android applications and SDKs in Kotlin. Specialized in Jetpack Compose, MVVM/MVI, Clean Architecture, and BLE-connected products, including a production SDK consumed by third-party applications.

Most recently on a remote contract for a US-based client, modernizing a legacy Java codebase to Kotlin. Fluent English; based in Brazil (UTC−3) with full overlap with US business hours.

Experience

1. Jan 2026 – Mar 2026

   Senior Android Developer · Acendeo, Inc.

   Client: Relocity, Inc. (US) · Remote · Contract

   Migrated a legacy Java app to Kotlin, moved networking to Ktor, and refactored key flows to Jetpack Compose with MVI.

2. Apr 2021 – Dec 2025

   Junior Software Engineer → Software Engineer → Software Engineer & Product Owner · Pixida do Brasil

   Designed and maintained an Android SDK for custom BLE devices used by third-party apps in production; built a white-label Android app; owned the product backlog as Product Owner from 2023 to 2025.

3. Oct 2020 – Feb 2021

   Mobile Developer · Restfy Tecnologia

   Built two React Native (TypeScript) apps: an internal production and distribution tool and a customer-facing purchase history and inventory app.

4. Sep 2018 – Oct 2020

   Android & Backend Developer · Bytecom Sistemas

   Built a Kotlin/MVVM sales app integrated with the company's ERP, with supporting Node.js/Express backend services.

Skills

Android

• Kotlin
• Jetpack Compose
• MVVM/MVI
• Clean Architecture
• Coroutines & Flow
• Koin
• Jetpack (Room, Navigation, ViewModel)

Testing

• JUnit
• MockK
• Robolectric
• Integration testing against BLE hardware

Networking & Data

• Ktor
• Retrofit
• Moshi/Gson
• Firebase
• AWS Amplify

Tools & Practices

• Git
• GitLab CI/CD
• Jira
• Figma
• Agile (Scrum/Kanban)
• Code review
• LLM-assisted development

Also

• React Native (TypeScript)
• Node.js (Express)

Education

Bachelor's Degree, Computer Engineering
Universidade do Vale do Itajaí (UNIVALI) · 2012 – 2017

Contact

Open to senior Android roles and contracts, remote or US-hours. The fastest way to reach me is LinkedIn.