His story has gained particular prominence with the chaos unfolding at home after the Taliban takeover. Family and friends of his also want to leave - hoping joining the thousands of others on evacuation flights or trying to find other routes out.
With the withdrawal of US troops on the horizon, the number of Afghan asylum seekers in Germany has risen since the beginning of the year, jumping by more than 130 per cent, data from the Federal Office for Migration and Refugees showed.
Even though his duel citizenship meant he could have chosen to move to Britain, where he had spent much of his life, he relocated to Germany at the end of 2020, seizing his last opportunity to do so before that path was closed by Britain's exit from the European Union.
He chose Germany because he expected it to have a better economic future and a leading role in the telecom and IT sectors in the long term.
But even with his background, Sadaat has struggled to find a job in Germany that matched his experience. With degrees in IT and telecommunications, Sadaat had hoped to find work in a related field. But with no German, his chances were slim.
"The language is the most important part," said Sadaat.
Every day he does four hours of German at a language school before starting a six-hour evening shift delivering meals for Lieferando, where he started this summer.
"The first few days were exciting but difficult," he said, describing the challenge of learning to cycle in the city traffic.
"The more you go out and the more you see people, the more you learn," he said.