02/15/2026 updated
verified
100 % availableSenior Android Engineer
Sofia, Bulgaria
Only remote
M.Sc., Chemical EngineeringAbout me
Senior Android & Kotlin consultant focused on scalable mobile architecture and stable production releases. Experience with fintech platforms, Kotlin Multiplatform, CI/CD, and performance optimization. Supporting teams with reliable, production-ready solutions.
FlutterJava (Programming Language)Data AnalysisAndroid Software DevelopmentArchitectureBillingCode ReviewContinuous DeliveryContinuous IntegrationProgramming ToolsMobile Application SoftwareJUnitModel View ViewModelParsingQuality Management
Android Development
Expertise in Kotlin/Java with Android SDK, Jetpack Compose, Architecture Components, and MVVM patterns for building robust mobile applications
Testing and Quality Assurance
Proficiency in JUnit, Mockito, Espresso, Snapshot/UI testing, and integration testing to ensure high-quality code delivery
CI/CD and Development Tools
Experience with GitLab CI/CD, Fastlane, Lint/Sonar, Postman, Swagger/OpenAPI, and BrowserStack for streamlined development workflows
Cloud Services and Backend Integration
Knowledge of Firebase services including Crashlytics, Analytics, FCM, Google Play Billing, REST/GraphQL, Parse Server, and Backend as a Service solutions
Cross-platform Development
Experience with Flutter using Dart and Provider, as well as Kotlin Multiplatform with Compose for building applications across multiple platforms
Navigation and UI Components
Skilled in implementing Navigation, Room, Retrofit, WorkManager, View Binding/Data Binding for creating seamless user experiences
Team Leadership and Mentoring
Experience leading mobile engineering teams, mentoring developers, and establishing code review standards and development practices
Release Management
Expertise in coordinating release cycles, stakeholder demos, and maintaining two-week release cadences for continuous delivery
Expertise in Kotlin/Java with Android SDK, Jetpack Compose, Architecture Components, and MVVM patterns for building robust mobile applications
Testing and Quality Assurance
Proficiency in JUnit, Mockito, Espresso, Snapshot/UI testing, and integration testing to ensure high-quality code delivery
CI/CD and Development Tools
Experience with GitLab CI/CD, Fastlane, Lint/Sonar, Postman, Swagger/OpenAPI, and BrowserStack for streamlined development workflows
Cloud Services and Backend Integration
Knowledge of Firebase services including Crashlytics, Analytics, FCM, Google Play Billing, REST/GraphQL, Parse Server, and Backend as a Service solutions
Cross-platform Development
Experience with Flutter using Dart and Provider, as well as Kotlin Multiplatform with Compose for building applications across multiple platforms
Navigation and UI Components
Skilled in implementing Navigation, Room, Retrofit, WorkManager, View Binding/Data Binding for creating seamless user experiences
Team Leadership and Mentoring
Experience leading mobile engineering teams, mentoring developers, and establishing code review standards and development practices
Release Management
Expertise in coordinating release cycles, stakeholder demos, and maintaining two-week release cadences for continuous delivery
Experience
Professional experience10+ years
Freelancer since2014
Languages
BulgarianNative speakerGermanBasic knowledgeEnglishFluentRussianBasic knowledge
Project history
Lead for the Compliance & Risk domain across multi-flavor Android apps (Skrill, Neteller, Paysafe Card) used for fiat and crypto money transfers. Led 4-6 mobile engineers, mentored the wider mobile community, established two-week release cadence, and drove automated testing strategy achieving 99% crash-free users.
Led a 3-6 person mobile team building white-label medical apps (MyIBD, MyArthritis, MyDerma, MyNets). Synchronized feature delivery across Android and iOS, owning releases and QA workflows using Kotlin/Java, MVVM, Dagger2, RxJava2, Retrofit2, Room, GraphQL, Firebase, Dynamic Links, EventBus, Picasso.
Built Java software solutions for telecom clients in a distributed team environment.