Staff Engineer

I am Alex. I love 2 things: engineering and networking. From the networking perspective I love all the people I get to meet and my main focus there is improving processes and cross-team communications. As engineer my main focus is architecture for Java & Kotlin backends. I am good at identifying critical problems and having a long-term vision about systems at scale.

Full Name: Alexander Sokolinskiy
Education: Bachelor’s Degree (MTUCI), Master’s Degree (MIPT)
Contacts: mail@y9san9.me, @y9san9, @y9san9
Languages: 🇺🇸 Fluent, 🇷🇺 Native, 🇰🇷 Beginner

Scientific Programming Center

Time Frame: 2025 - present
Role: R&D Staff Engineer (Java & Kotlin)
Experience: Nothing to openly share yet.

Yandex

Time Frame: 2024 - 2025
Role: Architecture & Culture (Java & Kotlin)
Experience: Set strategic architectural vision, leading large-scale technical projects and engineering teams to develop better approaches, speeding up development, making it for safe & reliable and increasing attractiveness project for new developers.

MTS

Time Frame: 2023 - 2024
Role: Lead Developer of SDK (Java & Kotlin)
Experience: Led the project of real-time communications SDK for Java. Created core logic and architecture. SDK was used in-company by 10+ other products, where I led the processes of integration of the SDK. Provided good compatibility and stability guarantees for our customers.

IceRock

Time Frame: 2021 - 2023
Role: Middle Developer (Android & iOS)
Experience: IceRock is an outsource company and I can’t fit all the experience I had there in a single paragraph. I had more than 10 different projects throughout this journey. Some projects were solely implemented by me. Others had big teams. Some got very old technologies and legacy. Others were fresh new and shiny. It was a good kickstart for my career.

Freelance

Time Frame: 2018 - 2021
Experience: I was just learning to program and in 2018 you could take easy tasks with no competition. I built some Android Apps, Web Apps and backends. All of which were horrible at that time. This period was grinding and learning.

Misc

Telegram & YouTube channels about Kotlin (in Russian)
Kotlin, Ktor, kotlinx contributor
Like to give public talks

y9san9

Random