〜としての

Attributive form of として, meaning "as (a) ~" or "in the capacity of ~." It links a role, status or identity to a following noun, describing something that belongs to or comes with that role (e.g. position, responsibility, pride).

Used in both speech and writing, often with nouns such as 立場, 責任, 自覚, 誇り, 役割 and 資格 to talk about what a role involves. Because the の makes it modify a noun, it contrasts with plain として, which modifies a verb or a whole clause (教師として働く).

• 1.
  としてN3「として」modifies a verb or the whole predicate (e.g., 「学生として勉強する」), whereas 「としての」modifies only nouns; the meaning is the same, so you choose based on whether a noun or a predicate follows, and the two cannot be interchanged. 「として」also has forms such as 「としては」and 「としても」.
• 2.
  としてはN2「としては」presents the speaker's standpoint or takes a certain category as the standard of judgment, and is followed by opinions or evaluations (e.g., 「新人としては上出来だ」), while 「としての」can only modify nouns. The two cannot be interchanged.
• 3.
  にとってN3「としての」expresses the qualities one has by virtue of a certain status or qualification, while 「にとって」means "for ..." and evaluates the significance of something from a particular subject's perspective; when modifying a noun, use 「にとっての」. The two cannot be interchanged.
• 4.
  たるもの / たるN1「たる」can also modify a noun in the form noun + たる + noun, but its register is formal and literary, emphasizing being worthy of the status. It also has an admonishing usage in which 「たるもの」is followed by 「べきだ」and the like, which 「としての」does not have.
• 5.
  において / におけるN3「としての」attaches to words expressing status, qualification, or standpoint and means "as ...", while 「における」attaches to words for place, time, occasion, or field, means "in/at ...", and is more literary in register. Both modify nouns, but they cannot be interchanged.

Unlike として and としては, which modify verbs or clauses (as a role, or as a topic/viewpoint), としての modifies a noun; にとって marks whose perspective something is judged from, and において/における mark a place or field rather than a role. たるもの/たる is a literary expression stressing what someone in a role ought to be, whereas としての simply links the role to a noun.