He graduated with a Doctor of Philosophy and Jurisprudence; he traveled to Europe and attended courses at the universities of Berlin, Lausanne, and London.

Giesecke arrived in Lima on July 9, 1909, temporarily joining the Colegio Nacional Nuestra Señora de Guadalupe with the mission of developing its commercial section and thus collaborating in the vocational reform of secondary education.

Thus, in 1910, President Augusto B. Leguía appointed him rector of the reopened National University of San Antonio Abad del Cusco, which had been closed the previous year.

Giesecke took charge of the chairs of Economic Sciences and Law, and carried out a fundamental reform, bringing the university into the realm of modernity.

He even became mayor (1920–1923), and in that capacity, he was concerned with paving the main streets, installing sanitary services, and building the access road to the ruins of Sacsayhuamán.