After working a few years in the profession he completed post-graduate studies at the Military Academy of the ETH Zurich.

After completing the Military Academy at the ETH Zurich he worked in several positions as a senior officer of the Swiss Armed Forces.

In 2000, he completed a certification in Security Policy at the NATO Defense College in Rome, Italy.

Dittli has been President of the Health Insurers Association Curafutura since January 1, 2018, succeeding Ignazio Cassis, who was then elected to the Federal Council.

Dittli is also chairman of the Board of Directors of Swisslos, a member of the Sport-Toto Society and President of the VAP Association of Retailers.