Vlad is available for hire
Hire VladVlad Kasprov
Verified Expert in Engineering
Android Developer
Location
Dubai, United Arab Emirates
Toptal Member Since
April 21, 2022
Vladyslav is a product-oriented Android engineer proficient in Kotlin and Java with five years of experience building native Android apps for high-profile companies with millions of users. He has experience working in food tech, fintech, ride tech, and eCommerce domains. He has interviewed, hired, and managed middle and senior developers in small teams. He also writes technical articles on Android development. Vladyslav's expertise is backed by a solid track record in high-volume businesses.
Portfolio
Talabat
Android Development, Kotlin, Java, Coroutines, Model View ViewModel (MVVM)...
SumUp
Android Development, Kotlin, Java, Coroutines, gRPC...
Yandex
Kotlin, Java, Android Development, Product Development, Product Design, RxJava...
Experience
Availability
Part-time
Preferred Environment
Android Studio
The most amazing...
...thing I've developed is a business efficiency feature for the Yandex Pro app. It increased revenue both for the company and taxi drivers.
Work Experience
Senior Android Engineer
2023 - PRESENT
Talabat
- Implemented OAuth 2.0 authentication, which greatly improved the app security.
- Improved app health by decreasing total ANR count by 10% and crash count by 20%.
- Contributed to the Flutter migration of the app by unblocking a team.
Technologies: Android Development, Kotlin, Java, Coroutines, Model View ViewModel (MVVM), Android Jetpack, Dagger, Retrofit, OkHttp, Firebase, Android Studio
Senior Android Engineer
2022 - PRESENT
SumUp
- Enabled the domain team to scale 1.5x in size by modularizing multiple monolith modules.
- Decreased network usage by 60% by caching frequently accessed data.
- Prevented 300 account takeover cases per day by implementing a security solution.
- Decreased the tech support load by 10% by enabling users to self-service card lifecycle operations.
Technologies: Android Development, Kotlin, Java, Coroutines, gRPC, Model View ViewModel (MVVM), Product Design, Product Development, Android Jetpack, Dagger, Retrofit, OkHttp, Firebase, Android Studio
Senior Android Engineer
2021 - 2022
Yandex
- Increased driver supply by 13% in some critical areas by supporting repositioning offers to such areas.
- Decreased time-until-next-order by 6% for certain driver categories by improving the loyalty program.
- Decreased the missed order rate by 7% for some driver categories by improving notification sounds and visuals.
- Increased the order acceptance rate by 9% for certain driver categories by enabling them to auto-accept orders.
- Supported a more flexible order dispatching by allowing some business efficiency features to work simultaneously.
Technologies: Kotlin, Java, Android Development, Product Development, Product Design, RxJava, Retail Integration Bus (RIB), Dagger, Retrofit, Android Jetpack, OkHttp, Firebase, Android Studio, Model View ViewModel (MVVM)
Senior Android Engineer
2020 - 2021
RetailCRM
- Led a team of two Android developers. Conducted technical interviews to hire them.
- Decreased clean build time by 20% by modularizing the codebase.
- Improved the sales conversion rate for managers by 6% by implementing incoming call identification.
- Facilitated the user base growth by 25% by integrating corporate customers and supporting product identification via QR codes.
Technologies: Kotlin, Java, Android Development, GraphQL, Model View ViewModel (MVVM), Coroutines, RxJava, Dagger, Retrofit, Android Jetpack, OkHttp, Firebase, Android Studio, Product Development, Product Design
Middle Android Engineer
2019 - 2020
TStech
- Helped launch over 20 trading platforms by configuring white-label apps for them.
- Decreased the codebase size by 80% by removing code duplication between white-label apps.
- Simplified creating future white-label apps by making the configuration backend-driven.
Technologies: Android Development, Kotlin, Java, Dagger, Retrofit, Android Jetpack, OkHttp, Firebase, Android Studio, Model View ViewModel (MVVM)
Junior Android Engineer
2018 - 2019
Xelentec
- Developed a social network app for people with certain chronic diseases.
- Built an accounting app for taxi drivers to track their profits and expenses.
- Architected a bike aggregator app to find and book available vehicles nearby.
Technologies: Android Development, Kotlin, Java, Model View ViewModel (MVVM), Dagger, Retrofit, Android Jetpack, OkHttp, Firebase, Android Studio
Experience
Talabat
https://play.google.com/store/apps/details?id=com.talabatA leading food delivery in the Middle East and North Africa region with millions of daily active users and hundreds of thousands of participating restaurants.
I worked on the authentication, user profile, and location features of the app.
I worked on the authentication, user profile, and location features of the app.
SumUp
https://play.google.com/store/apps/details?id=com.kaching.merchantSuper-app of SumUp, a global financial technology company supporting 3M+ merchants in 30+ markets worldwide and operating a product suite of tailor-made business tools created specifically for the micro and nano segment.
I am working on the Global Bank product of the super-app.
I am working on the Global Bank product of the super-app.
Yandex Pro (Taximeter)
https://play.google.com/store/apps/details?id=ru.yandex.taximeterYandex Pro is an app for taxi drivers and food delivery couriers that operates in 600+ large cities across 17 countries and serves 40M+ users worldwide.
I worked on the business efficiency and geolocation features of the app.
I worked on the business efficiency and geolocation features of the app.
RetailCRM
https://play.google.com/store/apps/details?id=intaro.bluetech.retailcrmA CRM platform helping 10k+ MAU online stores convert conversations with their customers into sales.
I led the development of the CRM's Android app.
I was responsible for the whole development lifecycle and scaled the team to three Android developers by helping with hiring.
I also led the team afterward.
I led the development of the CRM's Android app.
I was responsible for the whole development lifecycle and scaled the team to three Android developers by helping with hiring.
I also led the team afterward.
Education
2014 - 2015
Master's Degree in Applied Mathematics
V. N. Karazin Kharkiv National University - Kharkiv, Ukraine
2010 - 2014
Bachelor's Degree in Applied Mathematics
V. N. Karazin Kharkiv National University - Kharkiv, Ukraine
Skills
Libraries/APIs
RxJava, Retrofit
Tools
Android Jetpack, Android Studio
Frameworks
Dagger, gRPC
Languages
Java, Kotlin, GraphQL
Paradigms
Model View ViewModel (MVVM)
Platforms
Firebase
Other
Android Development, Coroutines, OkHttp, Retail Integration Bus (RIB), Product Development, Product Design
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