His key responsibilities are web and mobile application penetration testing, source code review. Moreover he works as a consultant, helping software development teams cope with application security related topics. Previously working as a software developer, building software for financial sector. He was a speaker both at international and Polish conferences and meetings dedicated to software development and IT security, including 4Developers, BlackHatAsia, CONFidence, Testing Cup and Test Well. Since 2011 he is a board member of OWASP Poland Local Chapter and coorganizer of chapter meetings.