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Takehara M.
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Takehara M.

Japanese AI QA Lead | Japanese AI Operations Lead

Hi! I’m Mizuki, a bilingual Japanese-English AI quality professional with 7+ years of operations and project management experience, including 1.5+ years leading Japanese review workflows for model training and LLM QA projects. I support AI teams by improving the quality and consistency of Japanese outputs through annotation review, reviewer calibration, onboarding support, localization QA, and workflow coordination. My strength is not just reviewing outputs myself, but helping teams build stable, scalable quality processes. I’ve supported Japanese reviewer operations, maintained low disagreement rates, aligned teams on guidelines, and helped improve review consistency in fast-moving AI environments. 💡 What I can help with: ✅ Japanese LLM QA ✅ Annotation review and quality control ✅ Reviewer onboarding and calibration ✅ Instruction-following QA ✅ Localization QA and linguistic review ✅ Rubric-based evaluation ✅ Workflow support for AI quality operations I’m a strong fit for teams looking for a Japanese QA lead, review specialist, or reviewer operations partner on a part-time or project basis. - Led Japanese QA/reviewer operations for LLM training projects - Built reviewer onboarding and support workflows - Maintained disagreement/PDR below 10% - Supported annotation review under tight deadlines - Bridged Japanese quality expectations with English-speaking stakeholders Thank you so much!

🇯🇵Nagoya, Japan$38/hr100% JSS5.00 (6)Since Nov 2023

Earnings and projects

MRR
$631

Last 6 months ÷ 6

World#68,154 / 412k
🇯🇵Country#146 / 1,269
Revenue, last 30 days
$194

Last 6 months: $3.8k

World#82,941 / 412k
🇯🇵Country#215 / 1,269
Total earnings
$118k

Billed in all: $135k

World#32,168 / 412k
🇯🇵Country#54 / 1,269
Per project
$7.4k

$1.9k in the last 6 months

World#22,893 / 412k
🇯🇵Country#38 / 1,269
Projects, last 6 months
2
0% fixed100% hourly
World#88,922 / 412k
🇯🇵Country#274 / 1,269
Projects in all
16

Across 17 contracts

88% fixed12% hourly
World#155,089 / 412k
🇯🇵Country#367 / 1,269

Earnings, last 30 days

$135k+$194 earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$134.5k$134.6k$134.7k$134.8kOct 9Oct 24Nov 8

Skill rankings: Top 11% in Writing

Ranked by MRR among everyone on Upwork with the skill.

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  2. #32Reinforcement Learning214 freelancers · 🇯🇵 #1Top 15%
  3. #63AI Model Training Prompt337 freelancers · 🇯🇵 #1Top 19%
  4. #82Generative AI Prompt Engineering427 freelancers · 🇯🇵 #1Top 19%
  5. #90QA Management453 freelancers · 🇯🇵 #1Top 20%
  6. #108Japanese898 freelancers · 🇯🇵 #53Top 12%
  7. #177LLM Prompt799 freelancers · 🇯🇵 #1Top 22%
  8. #238AI Model Training1,135 freelancers · 🇯🇵 #3Top 21%