— Team management: education, assessments, planning, hiring (team of 5 directly under me, grew from 2).
— Taking part in company strategy planning.
— Fast project evaluation. In the current company I participate in decisions whether the project should be taken into production.
— Business and system analysis.
— User interface design.

— Team management. As the first analyst team lead for the company, I established documentation standards and took part in developing processes for the projects.
— Strategy planning. As part of management team I proposed some steps which helped company recover from financial crisis.
— Project evaluation. For my previous company I've helped the board to get rid of bad and potentially very harmful decision by constantly evaluating both technical and direct financial risks of the solution.

— Project and team management, leadership;
— Unit economics and related analytics;
— Customer development;
— User experience;
— Business and system analysis;
— Software development for mobile, web and desktop.

— Mobile app hypotheses testing specific (in Russian)
https://habr.com/ru/post/445308/
— Managing application state in Flutter (in Russian)
https://habr.com/ru/post/424765/
— Cross-platform mobile framework comparison (in Russian)
https://habr.com/ru/post/421227/