McGraw Hill, April 2023-Present

I designed and built crucial components of McGraw Hill's K-12 Portal and ReadAnywhere, cross-platform apps for iOS and Android with a high-load backend and over a million users.

My responsibilities include:

Leading key initiatives to enhance the architecture, functionality, and UX of the K-12 Portal and ReadAnywhere apps, including their front and back end.

Leading collaboration across multiple stakeholders and teams working on McGraw Hill's main products: the K-12 Portal and ReadAnywhere apps. This includes coordination with the technical, product, business development, marketing, sales, and QA teams.

Ported the ReadAnywhere app from native iOS and Android versions to a unified Flutter codebase.

Designed and implemented the initial version, then led further development of a Download Manager, one of the K-12 Portal app’s core components, on which many other components and the app’s major features depend.

Engineered an innovative backend solution for seamless dynamic study materials updates in the Readanywhere.

Designed and built a universal logging component for robust error handling and health monitoring across all the K-12 Portal and ReadAnywhere app components.

Hypername, May 2022-April 2023

Hypername is a startup on a mission to terraform the internet and merge the real and digital worlds into one unified reality. It builds a new form of internet presence called hypername, providing a universal human-centric internet connectivity - also known as the identity layer of the internet. My responsibilities included:

Ported the Hypername app from its Minimum Viable Product (MVP) written in JavaScript/Cordova to Flutter.

Added GUI views with extended features and functionality.

Performed testing and bug fixing for the entire Hypername project, including iOS/Android apps and the backend.

Poryadok is Russia’s leading household goods marketplace.

It has a cross-platform app with:

Close to 1M downloads (iOS + Android)

30,000 daily users

4.9 stars based on 23,000 reviews on Google Play and 12,000 reviews on AppStore

99.83% crash-free user experience

Mobile app created with Dart/Flutter, backend is written on PHP

Poryadok has a web UI written on Angular: www.poryadok.ru

I was the only developer responsible for the mobile app on iOS and Android, under the direct supervision of the team lead, who created the app.

My responsibilities included:

Design and development of the app’s new views, as well as improving the existing UX

Backend API design and development

Accelerating the app’s framerate

Bugfixing of the entire web application: backend components, mobile app, web UI

Maintenance of the mobile app (monitoring logs, updating dependency libraries, etc.)

My work has directly impacted the following metrics increases:

The number of unique users per month increased by 157.2%

The number of unique users per week increased by 195.2%

The number of unique users per day increased by 300.6%

Average engagement time increased by 26.2%

Total revenue increased by 729.7%

Average purchase revenue per user increased by 178.7%

Skycount is a new form of ID for the Internet. It allows you to personally appear in places like payments, digital documents, or even a program code in a way equal to a real physical presence with a verified ID. The application is written in JavaScript. Backend is written on C# using .NET Core.

Implemented 70% of the user’s identity verification flow during user sign up

Implemented 90% of the device awareness feature that links the app to a particular person

Implemented 100% of the password recovery functionality

Implemented 100% of the push notifications processing on the server

Improved the server API response time by 60% by switching to .NET async pattern