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Senior
Registration: 10.12.2025

Nikita Simonovich

Specialization: Android Developer
— Senior Android Developer with 15+ years of experience delivering high-impact, scalable mobile solutions across fintech, ecommerce, logistics, media, and more. — Passionate about building modular, testable, and high-performance applications using modern Android technologies. Key Expertise: — Kotlin-first development, Clean Architecture, MVI. — Jetpack Compose & Single-Activity apps. — Modularization (100+ modules in production). — Coroutines, Kotlin Flow. — Reactive data streams (Room, WebSockets, StateFlow). — Dependency Injection: Dagger 2, Hilt. — CI/CD, unit/UI testing (JUnit, Espresso, Robolectric). — Firebase, Appsflyer, Analytics, Huawei HMS. — BLE, NDK, Secure messaging, Media apps. — Mentoring & code reviews. Currently leading Android development for a fintech platform with realtime data streaming, complex UI/UX, and advanced Gradle optimizations.
Android Kotlin Java MVVM patterns RealmDB JetPack RxKotlin Espresso Robolectric WebSockets Firebase CI/CD methodologies RxJava Dagger 2 JUnit
— Senior Android Developer with 15+ years of experience delivering high-impact, scalable mobile solutions across fintech, ecommerce, logistics, media, and more. — Passionate about building modular, testable, and high-performance applications using modern Android technologies. Key Expertise: — Kotlin-first development, Clean Architecture, MVI. — Jetpack Compose & Single-Activity apps. — Modularization (100+ modules in production). — Coroutines, Kotlin Flow. — Reactive data streams (Room, WebSockets, StateFlow). — Dependency Injection: Dagger 2, Hilt. — CI/CD, unit/UI testing (JUnit, Espresso, Robolectric). — Firebase, Appsflyer, Analytics, Huawei HMS. — BLE, NDK, Secure messaging, Media apps. — Mentoring & code reviews. Currently leading Android development for a fintech platform with realtime data streaming, complex UI/UX, and advanced Gradle optimizations.
Android Kotlin Java MVVM patterns RealmDB JetPack RxKotlin Espresso Robolectric WebSockets Firebase CI/CD methodologies RxJava Dagger 2 JUnit

Skills

Android
Android Jetpack
Jetpack Compose
Java
Kotlin
Clean Architecture
SOLID
Kotlin coroutines
RxJava
RxKotlin
Room
WebSockets
StateFlow
Dagger 2
Hilt
CI/CD
JUnit
Espresso
Robolectric
Firebase
Appsflyer
Analytics
Huawei HMS

Work experience

Senior Android Developer
since 09.2020 - Till the present day |Fayrix
Multimodule (100+ modules), MVI, Clean Architecture, Jetpack Compose, Navigation, Coroutines, Flow, Room, Retrofit2, WebSockets, Dagger2, Firebase, Appsflyer, Solytics, HMS, JUnit, localization
Fintech trading application for stocks and CFDs. Key Achievements: ● Implemented 3 day swap feature → +3.2% trade volume. ● Added full stocks trading module (30+ screens) → +41% MAU, +36.1% trade conversion. ● Built qualified investor questionnaire → reduced regulatory risk. ● Integrated Efinno → expanded instrument offering, improved revenue & retention. ● Implemented webinar subscription → +7.2% first deal conversion. ● Reduced Gradle build time from 10min to 2min. ● Migrated UI to Jetpack Compose over 1.5 years → decreased development cost. Responsibilities: ● Code reviews, architecture planning. ● Feature design & implementation. ● Collaboration with designers & cross functional teams. ● Reactive & multithreaded programming.
Senior Android Developer
05.2018 - 09.2020 |Syberry
MVVM/MVI, Jetpack, GRPC, RxJava, Coroutines, Objectbox, Retrofit2, Dagger2, CI/CD
Development for retail, scooter rental, fuel delivery, audiobook apps, and secure messenger. Retail Delivery App: ● Implemented GRPC → increased performance & reduced latency. ● Built durable system → 98% successful deliveries. ● Integrated POS terminal → +7.3% sales. ● Built app from scratch. Scooter Rental App: ● MVI, Jetpack, Coroutines, Retrofit2, Dagger2, WebSockets. Onsite Car Refueling App: ● Bonus system → increased AOV. ● Referral campaign → +13.72% user growth. ● Promo codes → improved retention. ● Bottom sheet redesign → faster flows, increased upsells. ● Configured GitLab CI/CD → faster releases. Audio Books App: ● MVP, ExoPlayer, Dagger2, Retrofit2. Secure Messenger: ● MVP, RxJava2, Dagger2, NDK. Radiation Measurement App: ● BLE binary protocol, MVP, Moxy, SQLite.
Android Team Lead
06.2017 - 04.2018 |Automile
Bluetooth, MVP (Moxy), RxJava2, Retrofit2, Objectbox, Dagger2
Fleet management & safety compliance. ● Online firmware updates → improved maintainability. ● Nearestcity & cardinal direction algorithm (offline DB). ● Optimized DB structure → 9.7% storage usage. ● Deviceserver sync → reduced fleet update latency.
Android Team Lead
04.2016 - 06.2017 |Humaniq
Kotlin, RxJava2, Dagger2, MVP/Moxy, OkHTTP
Fintech bonds trading app. ● Built the app from scratch. ● Flexible Clean Architecture for rapid feature growth. ● CI/CD via Jenkins → reduced deployment errors. ● Established code review process → early bug detection. ● Delivered 3 major releases on schedule.
Head of Mobile Development
09.2011 - 04.2016 |Legal Tech Verband Deutschland
ERP
● Scaled Android & iOS teams from 4 → 12. ● Implemented development guidelines & architecture principles. ● Designed hiring process, improved TTM. ● Worked with CTO/CPO/PMO on roadmap & priorities. ● Managed mobile org: hiring, training, career development.
Lead Engineer
08.2009 - 08.2011 |NetCracker
ERP
Team Lead & Developer
01.2006 - 08.2009 |Infosfera
Billing systems, Oracle
● Billing systems. ● Oracle development. ● Leading 6 person team.
Developer
12.2004 - 12.2005 |Integra S
J2ME
● Audio/video transmission systems. ● J2ME mobile apps.
Developer
01.2004 - 12.2004 |Knowlege Genesis
JSP, Struts (MVC).
Developer
10.2001 - 07.2002 |Vita
Delphi, Oracle systems, Crystal Reports

Educational background

Specialist (Bachelor’s Degree)
2001 - 2007
Samara State Aerospace University

Languages

EnglishProficientFrenchAdvancedRussianNative