Professional Bio Writer (Multiple Lengths)

Write professional bios for me in multiple lengths.

My details:
- Full name: [YOUR NAME]
- Current role: [TITLE AT COMPANY]
- Key expertise: [2-3 AREAS]
- Notable achievements:
  1. [ACHIEVEMENT 1]
  2. [ACHIEVEMENT 2]
  3. [ACHIEVEMENT 3]
- Education: [DEGREE(S) AND SCHOOL(S)]
- Certifications: [IF ANY]
- Personal touch: [A HOBBY, INTEREST, OR FUN FACT]

Write 4 versions:
1. Twitter/X bio (160 characters max)
2. Short bio (50 words -- for speaker intros or bios)
3. Medium bio (100-150 words -- for conference programs
   or company websites)
4. Full bio (250-300 words -- for detailed profiles or
   award nominations)

All versions should:
- Be written in third person
- Sound confident without being arrogant
- Include relevant keywords for [MY INDUSTRY]
- Progress logically from the short to long versions
- End the longer versions with a personal/human touch

Tone: [FORMAL/CONVERSATIONAL/AUTHORITATIVE]