Mikami Satoru, a businessman, is stabbed by a criminal on the street and killed. When he regains consciousness in the darkness, he finds that he's been reincarnated as a slime! With nothing better to do, he spends his time devouring all the rare herbs and precious ores he comes across. As he does, he encounters the Storm Dragon Veldora, who was sealed in this cave 300 years ago by a hero's "Unlimited Imprisonment" skill. He's frightened at first, but as they talk, he becomes friends with the long-isolated Veldora.
worked my way up the ladder, 
and started making decent money.
سعيت للترقّي شيئاً فشيئاً وبدأت
بجني قدر جيد من المال
So habe ich Karriere gemacht
und verdiene auch ganz ordentlich.
fui subiendo de puestos
y empecé a ganar bastante.
fui escalando puestos
y empecé a ganar bastante.
où j’ai pas mal réussi,
et mon salaire a suivi.
ho ottenuto una promozione 
e ora guadagno un discreto stipendio.
consegui minhas promoções
e tenho um salário razoável.
поднялся по карьерной лестнице
 и зарабатывать прилично стал.