Open to opportunities

Митя Герасименко

@0005904

Message

I build secure, high-performance native Android products in Kotlin for enterprise and consumer apps.

Poland

Message

What I'm looking for

I'm looking for a remote or Wrocław-based B2B Android role where I can build secure, high-performance Kotlin products, contribute to modern architecture, and collaborate across teams. I'm available immediately and flexible for US-hours meetings.

I've built and shipped native Android products for Trinetix, BlueMail, and BAS-IP, spanning security-critical B2B applications, an email client with millions of users, secure messaging, and smart-building devices.

At Trinetix, I hardened an enterprise application with certificate pinning and fingerprint authentication, built a Kotlin Multiplatform project from scratch, and drove Java-to-Kotlin migration across a large multi-module codebase.

At BlueMail, I improved loading speed by about 30% and eliminated memory leaks; at BAS-IP, I built secure messaging and mobile access products, including a launcher for a Red Dot Design Award-winning product.

Experience

Work history, roles, and key accomplishments

Current

Senior Android Developer

Current

Trinetix

Jun 2024 - Present (2 years 3 months)

Implemented certificate pinning and fingerprint authentication with session timeout for a secure B2B application. Built a Kotlin Multiplatform project from scratch and migrated the codebase to API 35 and ViewBinding.

Kotlin Java MVVM Jetpack Compose Coroutines Dagger 2 ROOM OkHttp Datastore Android Keystore JWT Kotlin Multiplatform

Android Developer

BLIX (BlueMail)

Dec 2022 - May 2024 (1 year 5 months)

Improved app loading speed by ~30% through profiling and optimizing CursorLoader usage. Eliminated memory leaks and migrated the async layer from AsyncTask to RxJava2, and integrated the OpenAI GPT API.

Java RxJava2 Realm Performance Optimization OpenAI API

Android Developer

BAS-IP

Feb 2019 - Nov 2022 (3 years 9 months)

Developed Android applications for smart building and IP intercom products, including a secure messenger and a mobile app for SIP video calls. Built multifactor access features and integrated KONE elevator control.