Startup (3 years - current time): developing egov app from scratch up to 18+ million users, both client (android) and backend development (java, nodejs, python)

Outsource (1.5 years): took part in different IoT projects as a mobile developer(android, flutter) and backend developer java/python.

MilTech startup (3.5 years): based on signal open source project built an android app and java backend with extended geoinformation system functionality, managed team of 5 developers.