JAROSŁAW OLESIAK

88.10.Z - Social work activities without accommodation for the elderly and disabled

62.01.Z - Computer programming activities

62.03.Z - Computer facilities management activities

62.09.Z - Other information technology and computer service activities

74.30.Z - Translation and interpretation activities

74.90.Z - Other professional, scientific and technical activities not elsewhere classified

85.59.A - Teaching of foreign languages

85.59.B - Other out-of-school forms of education, not elsewhere classified