German mastering and DMM cutting engineer, working for Optimal Media GmbH between 09 February 2015 and 31 December 2019.
His cuts can be recognized by SJ, in combination with an Optimal number, etched into the runouts. Please credit with Direct Metal Mastering By.
When in combination with another Optimal engineer, or stamped, use Lacquer Cut By.
Has left the industry and founded a digital media and webhosting company.

For the Austrian classical guitarist, music pedagogue and web designer, please use Stefan Jeschek.