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Yeaseul H.

Yeaseul H.

AI Data Annotation & Evaluator | Bilingual Tech Writer

Korean–English Bilingual | AI Data Annotation & Technical Writing I specialize in Korean speech and text data annotation for AI model training, with hands-on experience in transcript alignment, metadata tagging, and RLHF- or chatbot-based evaluation workflows. As a senior reviewer on multi-layered AI projects, I’ve contributed to prompt refinement, domain/environment classification, and structured quality reviews to ensure dataset reliability and training value. I’m comfortable following complex annotation guidelines precisely and consistently. In parallel, I bring 4+ years of experience supporting B2B SaaS platforms, where I handled technical support, process design, and documentation. This background has helped me build strong technical literacy and a structured communication skill set—skills I aim to apply to freelance opportunities in technical content writing as well, especially where clarity and guideline adherence are critical. Core Strengths: • Korean speech annotation, RLHF & chatbot evaluation • Transcript-text alignment & metadata consistency checks • Writing manuals and user guides for SaaS tools • Clear communication in both Korean and English Additional Capabilities: • Natural Korean voice recording for AI training datasets • Experience with product upload workflows on Korean e-commerce platforms Open to: – AI data tasks (RLHF, prompt tuning, chatbot/speech QA) – Technical documentation and content writing – English-to-Korean refinement with attention to tone and instruction-level accuracy

🇰🇷Seongnam-si, South Korea$15/hr95% JSS5.00 (4)Since Jun 2025

Earnings and projects

MRR
$839

Last 6 months ÷ 6

World#55,892 / 412k
🇰🇷Country#81 / 676
Revenue, last 30 days
$96

Last 6 months: $5k

World#92,852 / 412k
🇰🇷Country#152 / 676
Total earnings
$7.7k

Billed in all: $7.9k

World#217,580 / 412k
🇰🇷Country#298 / 676
Per project
$969

$1k in the last 6 months

World#126,427 / 412k
🇰🇷Country#168 / 676
Projects, last 6 months
5
20% fixed80% hourly
World#41,746 / 412k
🇰🇷Country#72 / 676
Projects in all
8

Across 12 contracts

50% fixed50% hourly
World#223,560 / 412k
🇰🇷Country#352 / 676

Earnings, last 30 days

$7.9k+$96 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$7,800$7,850$7,900$7,950Oct 8Oct 23Nov 7

Skill rankings: Top 5% in Voice Recording

Ranked by MRR among everyone on Upwork with the skill.

  1. #9RLHF76 freelancers · 🇰🇷 #1Top 12%
  2. #21Voice of the Customer110 freelancers · 🇰🇷 #1Top 19%
  3. #23English to Korean Translation230 freelancers · 🇰🇷 #12Top 10%
  4. #27AI Instruction152 freelancers · 🇰🇷 #2Top 18%
  5. #39AI Model Training Prompt337 freelancers · 🇰🇷 #2Top 12%
  6. #77Sales Writing897 freelancers · 🇰🇷 #1Top 9%
  7. #81Customer Feedback Documentation365 freelancers · 🇰🇷 #1Top 22%
  8. #110Ecommerce Product Upload925 freelancers · 🇰🇷 #1Top 12%