Hartmann was born in Basel, Switzerland, a city in the northwest of the country where the Swiss, French and German borders meet. Basel has long been a center of trade, banking and scholarship, and its university, founded in 1460, is Switzerland's oldest. Spoken languages recorded for Hartmann are German, French, English and Italian.
Hartmann was admitted to the bar in Switzerland in 1947. Swiss bar admission is normally granted to lawyers who have completed university legal studies and practical training, and admission authorized practice as an advocate in the Swiss legal system.
Hartmann practiced law in Basel as a partner in the firm named Hartmann, Simonius, Wiemken, Spoendlin. Admission to the bar in Switzerland in 1947 marks the start of the professional record for Hartmann.
The partnership's name includes Simonius and Wiemken, and the present Simonius & Partner, a law and notary's office in Basel, traces its origins to a firm of Dr. Flüge, Prof. Simonius and E. Wiemken and to a law and notary's office founded in Basel in 1916 by Dr. Fritz Hagemann. In October 2000 that Basel practice merged with Holliger Pfrommer & Partners. Its clients have included companies and private individuals in litigation and disputes before courts and other authorities.
