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Junhyuk K.

Junhyuk K.

Korean AI Evaluation | Data Quality | LLM Operations

I’m a data and AI operations professional with experience in data engineering, data quality, automation, and AI-related workflows. I can support projects involving Korean language data, AI response evaluation, data validation, annotation, localization QA, and structured data processing. My strengths are accuracy, clear communication, and building reliable workflows for data and AI projects. I’m especially interested in projects related to LLM evaluation, Korean AI data, and human-in-the-loop operations. I’m available for both individual tasks and team-based projects, and I’m focused on delivering consistent quality and meeting deadlines. I’m also building a Korea-based AI evaluation and human data operations team for larger-scale projects.

🇰🇷Seoul, South Korea$40/hr40% JSS5.00 (1)Since Aug 2026

Earnings and projects

MRR
$4k

Last 6 months ÷ 2.4 months active (since Aug 2026)

World#7,895 / 412k
🇰🇷Country#9 / 676
Revenue, last 30 days
—

Read daily since Oct 22, under 30 days

Total earnings
$9.7k
World#198,808 / 412k
🇰🇷Country#268 / 676
Per project
$3.2k

$3.2k in the last 6 months

World#52,041 / 412k
🇰🇷Country#54 / 676
Projects, last 6 months
3
100% fixed0% hourly
World#66,479 / 412k
🇰🇷Country#114 / 676
Projects in all
3
100% fixed0% hourly
World#304,140 / 412k
🇰🇷Country#505 / 676

Earnings, last 30 days

$9.7k+$4.7k earned since Oct 22Billed in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$2.5k$5.0k$7.5k$10.0kOct 22Oct 30Nov 7

Tracked from Oct 22, 2026.

Skill rankings: Top 0.83% in Data Mining

Ranked by MRR among everyone on Upwork with the skill.

  1. #15Information Analysis523 freelancers · 🇰🇷 #1Top 3%
  2. #63Software QA2,245 freelancers · 🇰🇷 #1Top 3%
  3. #76Data Mining9,149 freelancers · 🇰🇷 #2Top 0.83%
  4. #76ETL1,555 freelancers · 🇰🇷 #1Top 5%
  5. #86Data Extraction5,086 freelancers · 🇰🇷 #1Top 2%
  6. #100ETL Pipeline1,396 freelancers · 🇰🇷 #1Top 7%
  7. #320Data Analysis14,624 freelancers · 🇰🇷 #1Top 2%