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Yaroslav Horbach
Chernihiv / [open contact info](look above in the "contact info" section) / [open contact info](look above in the "contact info" section)

Summary
Android Developer with 5+ years of experience specializing in fintech and banking apps. Built applications from scratch,
participating in architecture and technology stack selection, and communicating directly with clients, backend, QA, and
designers. Able to independently break down complex business requirements into smaller, actionable tasks. Skilled in
designing scalable architectures, improving app performance, and optimizing UI/UX for better usability and retention.
Proficient in Kotlin and Jetpack Compose, with hands-on experience in Kotlin Multiplatform. Committed to continuous
learning and building secure, maintainable products that support business goals.

Experience
Microinvest – Loan Management App
Android Developer
06/2024 - Present
Team Size: 10+
Tech Stack: Kotlin, Jetpack Compose, Coroutines, Hilt, Room, Retrofit, Firebase, Fastlane

Microinvest is the largest non-bank financial institution in Moldova, specializing in financing MSEs, agricultural
producers, and individual customers. I contributed to the development of the Android app from scratch, taking an active
role in architecture design, technology stack selection, and the implementation of key business flows such as KYC-based
authentication, loan application management, registration, and other essential features. My focus was not only on
delivering stable functionality but also on ensuring smooth performance and great user experience — I improved app
startup speed by 30% using Baseline Profile and other performance optimizations. I proposed and implemented an in-app
rating prompt after positive user journeys, which increased the Google Play rating by 0.6 points and more than doubled the
number of user reviews.

Capibank – Mobile Banking App
Android Developer
03/2022 - 06/2024
Team Size: 15+
Tech Stack: Kotlin, Retrofit, Room, Koin, Coroutines, Navigation Components, Firebase, Fastlane

Developed and maintained core banking features including money transfers, bill payments, and account management.
Improved crash-free users from 99.1% to 99.7% through proactive monitoring and issue resolution with Firebase
Crashlytics. Strengthened app security by implementing TLS Pinning, digital document signing, and local data encryption,
ensuring compliance with financial-grade security standards. Collaborated closely with backend and QA teams to optimize
API communication and streamline key user flows.

Space – Digital Banking App
Android Developer
06/2021 - 02/2022
Team Size: 10+
Tech Stack: Java, Kotlin, RxJava2, Dagger2, Room, Retrofit, Firebase

Worked on the development and optimization of a fully digital banking application, enabling users to perform all banking
operations remotely and instantly. Took part in a complete redesign of the application, aligning it with new design
guidelines to enhance user experience and accessibility. Conducted code reviews to maintain high code quality, fixed
critical bugs to improve app stability, and integrated Firebase Analytics to track user interactions.
MosGorEnergosbyt – Energy Management App
Android Developer
01/2021 - 06/2021
Team Size: 10+
Tech Stack: Kotlin, Java, RxJava2, Dagger2, Room, Retrofit

Developed and maintained the mobile application for a major energy supplier, ensuring optimal performance and a
smooth user experience. Led the refactoring of legacy code and migration to Kotlin, improving maintainability, scalability,
and overall code quality. Integrated new features, fixed bugs, and optimized transaction processes to enhance stability and
responsiveness. Collaborated closely with the backend team to optimize APIs and streamline data flows.

Skills
Android SDK, Android Jetpack, Retrofit, Room, Realm, XML, Jetpack Compose, Glide, RxJava, Kotlin Coroutines, Dagger 2,
Hilt, Koin, Clean Architecture, SOLID, KISS, YAGNI, DRY, CI/CD, Fastlane, Firebase App Distribution, Jenkins

Education
Cybersecurity
12/2023

Cybersecurity
07/2022