Sebastian Ślęzak

System engineer with experience in Linux and VMware administration. I create and automate processes using PowerShell and Bash. I manage Elastic Stack (ELK), analyze logs in ES|QL and optimize systems for performance and security.

I provided technical support for applications based on Java, Spring Framework and MySQL, PostgreSQL databases. I diagnosed and resolved system problems on Linux, analyzed logs, optimized SQL queries and worked with the development team.

Mobile application development in Java and Android SDK, API integration, code optimization, debugging. Teamwork with Git, testing and implementing new features. Gain practical knowledge of the application lifecycle.