He was just promoted to assistant manager of the company.
Tips
usage
Common Taiwanese corporate title - ranks below 副总经理 (deputy GM) but above 经理 (manager). In mainland Chinese companies you'll more often see 副经理 or 助理经理 used in this slot.
history
Originally a Qing-dynasty official title 协理大臣, used for ministers helping the chief minister. The corporate sense came later, modeled on banking and trading firms.
