My name is Jarosław Jezierczak and I write programs for the Android platform in JAVA language. It is not my primary occupation, I treat it as a hobby. I program during my free time, mostly in the evenings and on weekends.

I graduated from the University of Economics in Krakow. Until now, professionally, I was mainly a heavy truck driver and a machinery operator. I currently run my own earthmoving company.

I combined my professional experience with programming skills and the following applications were created:

  • TachoMobile - an application supporting professional drivers,
  • Mobilny kalkulator wynagrodzeń Free - a program that calculates the remuneration with the specification of all components for various contracts in Poland,
  • Kursy Walut NBP - displays exchange rates from NBP tables, it also has a convenient currency converter and a historical data chart,
  • VATcalc - simple gross / net VAT converter,
  • Sprawdź Czynny VAT - it enables checking business entities in the database of VAT taxpayers