At Infogorod, I wrote unit and instrumentation tests for Kotlin features and ran UI regression tests with Appium and Espresso on real devices and emulators.
I used Charles Proxy to inspect HTTPS traffic, replay requests, and mock responses when bugs appeared against the live backend. I also tested the OWASP MASVS protections we shipped, including certificate pinning and root and emulator checks, and triaged release crashes in Firebase Crashlytics.
At Mintrocket, I built multi-device sync for a habit tracker and rewrote conflict handling per field after the first version could wipe a day of entries. I also worked on offline-first Google Drive sync for a healthcare app and migrated a client project from XML Views to Compose.
Earlier, as a Junior Researcher at Tyumen State University, I designed experiments, took instrument measurements, evaluated results statistically, and built and commissioned a measurement rig.
