Judge Stefan Jaworski was born on 9 December 1946 in Kamionka Górna. He graduated from the Faculty of Law of the Jagiellonian University in 1969. Between 1969 and 1971 he trained as a prosecutor and then served at the county prosecutor's office in Bytów from 1971 to 1974 as an associate and assistant public prosecutor. In 1974 he was appointed an assistant public prosecutor in the Voivodship Public Prosecutor's Office in Koszalin, a deputy prosecutor in 1975 and, then, a public prosecutor in the department of prosecutor's supervision of the observance of law and civil law cases in the Voivodship Prosecutor's Office in Słupsk. From 1990 he was Voivodship Public Prosecutor in Zamość. He served as a deputy director of the Department of Public Prosecution at the Ministry of Justice from 1992.  In June of that year he was appointed a public prosecutor at the Ministry of Justice assuming the duties of the Voivodship Public Prosecutor in Warsaw. From July to November 1993 he was a prosecutor in a newly established Appellate Prosecution Office in Lublin, where he served as head of the Organisation Department.

He has been a member of the National Electoral Commission since 1995.

He is a prolific author of publications on the organisation of the system of public prosecution, and in the field of constitutional law.

Stefan Jaworski was a Judge of the Constitutional Tribunal from 1993 to 2001.