Cyril Matrosov
@kmatrosov
Lead Android Developer scaling Kotlin apps with AI-driven quality, team leadership, and Kotlin Multiplatform expertise.
SpainWhat I'm looking for
I’m a Lead Android Developer with 8+ years of experience building and scaling mobile applications used by tens of millions of people across e-commerce, fintech, navigation, and creative tech. I specialize in Kotlin, Kotlin Multiplatform (KMP), Jetpack Compose, and modern Android architecture (MVVM, MVI), and I’ve shipped products from zero to millions of users.
At Wildberries, I currently lead a team of five Android engineers building the largest marketplace seller app in Russia and the CIS (70M+ MAU). I drive architecture and delivery, including introducing an AI-powered workflow that generated unit tests for 41 of 150 modules—raising coverage from 12% to 93%—and refactoring modules to a new architecture that cut code review time by 20%.
I also focus heavily on scale and reliability. I’ve delivered SDKs and apps with 99.99%+ crash-free rates, built reusable components integrated into flagship applications, and designed features that reuse well across org needs (for example, a real-time chat feature that later supported tech support).
Before Wildberries, I built AI and media experiences (including shipping Oji to Top 30 on Google Play within one week) and rebuilt Android infrastructure to improve performance—such as cutting screen load time by 60%. Across roles, I mentor engineers, run technical and final interviews, and partner with PMs and designers to balance speed, quality, and user experience—using LLMs and AI tooling to raise engineering velocity.
Experience
Work history, roles, and key accomplishments
- Lead a team of five Android developers building the largest marketplace seller app in Russia and the CIS (70M+ MAU).
- Built an AI-powered workflow that generated unit tests for 41 of 150 modules, raising coverage from 12% to 93%.
- Refactored 14 modules to a new architecture, cutting code review time by 20%.
- Designed and launched a real-time chat feature for sellers and buyers, later reused i
- Built Oji, an AI photo and video editing app, from scratch; reached Top 30 on Google Play within one week.
- Developed Artique, an app for business owners to create and manage image and video portfolios for social media.
- Partnered with designers to integrate sticker and image features into the editing canvas, improving UX.
- Rebuilt the Android Service Delivery Infrastructure (SDI), cutting sc
- Built a car refueling SDK from scratch with real-time progress tracking over WebSockets and in-app payments (bank cards, Google Pay); achieved a 99.997% crash-free rate and 1M MAU in 18 days, integrated into 2GIS, the largest navigation and directory app in Russia and the CIS.
- Developed a navigation SDK for 2GIS for integration into third-party applications.
- Built an account management app o
- Supervised a team of four Android Developers for one year, overseeing the creation of an app for a supermarket chain that achieved one million installs, enhancing the crash-free rate from 99.5% to 99.998%.
- Conducted an analysis of market trends to propose a redesigned product catalog, leading to a 10% boost in the retention rate.
- Directed a team consisting of two Android Developers and o
Education
Degrees, certifications, and relevant coursework
ITMO University
Master's degree, Computer Science
2018 - 2020
Saint Petersburg State University of Finance and Economics
Bachelor's degree, Computer Science
2014 - 2018
Availability
Location
SpainAuthorized to work in
Social media
Job categories
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