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Alex User

@alexuser32

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Senior Android developer building scalable, high-performance mobile apps with Kotlin.

Latvia

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What I'm looking for

I help businesses ship production-ready Android apps end-to-end—architecture, development, testing, and long-term maintenance—writing clean, testable code that aligns with business goals and user expectations, with a focus on performance and reliability.

I am a Senior Android Developer with 10+ years of experience delivering high-quality, scalable mobile applications for startups, mid-sized enterprises, and global clients. I specialize in Android app development with Kotlin and Java, using modern architectures like Clean Architecture and MVVM, plus Jetpack Compose and the Android SDK.

I help teams turn ideas into production-ready Android applications—from concept and prototyping to architecture design, development, testing, and long-term maintenance. I’ve migrated large legacy Java/XML apps into Kotlin/Jetpack/MVVM, built an AI image recognition API with <100ms response time for a social messenger, and ensured reliability by covering core business logic with tests; I was also the solo Android developer for a startup that grew into a self-sustaining business with 5m+ installs.

Experience

Work history, roles, and key accomplishments

Current

Senior Android Developer

Current

Ubiquiti

Nov 2025 - Present (6 months)

Developed and maintained embedded Android applications using Jetpack, Kotlin, and MVVM. Worked on Android architecture and codebase evolution to improve maintainability.

Android SDK Kotlin Jetpack MVVM Dependency Injection Coroutines Performance Optimization

Senior Android Developer

XM Remote Forex

Nov 2022 - Nov 2025 (3 years)

Built and delivered features for a trading app, applying SOLID principles and clean code practices. Implemented CI/CD with GitLab and improved reliability with test automation and Firebase integration.

Kotlin Clean Code MVVM MVI RxJava Jetpack Compose Test Automation Firebase

Senior Android Developer

Accenture

May 2021 - Nov 2022 (1 year 6 months)

Worked across multiple banking projects, implementing change requests and fixing production bugs. Wrote unit and integration tests using Espresso to improve app stability and regression safety.

Kotlin Clean Code RxJava MVVM Espresso Flutter REST APIs Test Automation

Android Developer

Kreiss

Oct 2020 - May 2021 (7 months)

Developed and maintained a truck-driver business app as the single Android developer. Led full ownership of new features, migrated legacy Java to Kotlin and better architecture, and remade the UI from tablet layouts to phone layouts.

Android SDK Java RxJava ROOM Retrofit Kotlin MVVM XML Layouts Performance Optimization

Android/Full Stack Developer

AntiChat Inc

Aug 2015 - Oct 2020 (5 years 2 months)

Built the Android version of a remote startup product from concept to a profitable app with 5M+ installs and an average rating of 4.2. Migrated Java/XML to Kotlin/Jetpack with MVVM and Clean Code, created an AI image recognition API with <100ms response time, and improved test coverage and performance.

Android SDK Java Kotlin ROOM LiveData Coroutines MVVM RxJava