English Word Classification API Development

I need an API developed that processes English and classifies words from provided input. The API should:
- Accept a word or a paragraph.
- Split the input into individual words.
- Identify the part of speech for each word (noun, verb, adjective, etc.).

A sample input would be:
"I am AI/ML developer, I am very experienced in AI/ML and I am excellent coder."
The output should be in JSON format, summarizing the words by their type.

Summary by Type:
Nouns: developer, AI/ML (when used as an object), coder
Verbs: am (linking verb)
Adjectives: AI/ML (when modifying developer), experienced, excellent
Adverbs: very
Pronouns: I
Prepositions: in
Conjunctions: and
Punctuation: comma (,), period (.)

Ideal Skills:
- Proficiency in API development.
- Strong knowledge in Natural Language Processing.
- Experience with JSON formatting.

Please provide an estimated time for completion.