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Nguyen L.
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Nguyen L.

Data Quality Assessment Specialist | AI Data Auditor | Vietnamese Expe

With 10 years of experience in technical operations, I specialize in Data Quality Assessment and AI model training support. I ensure precision, consistency, and strict adherence to guidelines across multiple data modalities. Core Expertise: Conversation & Text AI Auditing: Evaluating response coherence, safety flagging, fact-checking, and prompt-response alignment. TTS (Text-to-Speech) Auditing: Assessing synthetic speech for naturalness, accent accuracy, pronunciation, tone, and acoustic clarity. Guideline Compliance: Deep attention to detail to catch subtle errors and maintain high dataset standards for Vietnamese language data. I believe AI model quality depends on clean input data—that is why I don't just process data; I rigorously audit it.

🇻🇳Ho Chi Minh City, Vietnam$7/hr100% JSS5.00 (2)Since Apr 2026

Earnings and projects

MRR
$1.2k

Last 6 months ÷ 5.8 months active (since May 2026)

World#40,602 / 412k
🇻🇳Country#323 / 3,463
Revenue, last 30 days
$1.6k

Last 6 months: $6.9k

World#26,914 / 412k
🇻🇳Country#232 / 3,463
Total earnings
$7k

Billed in all: $7k

World#226,330 / 412k
🇻🇳Country#1,697 / 3,463
Per project
$1.7k

$1.7k in the last 6 months

World#85,097 / 412k
🇻🇳Country#581 / 3,463
Projects, last 6 months
4
100% fixed0% hourly
World#51,813 / 412k
🇻🇳Country#607 / 3,463
Projects in all
4
100% fixed0% hourly
World#283,741 / 412k
🇻🇳Country#2,452 / 3,463

Earnings, last 30 days

$7k+$1.6k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$5k$6k$7kOct 8Oct 23Nov 7

Skill rankings: Top 6% in Vietnamese

Ranked by MRR among everyone on Upwork with the skill.

  1. #15Vietnamese251 freelancers · 🇻🇳 #14Top 6%
  2. #118Data Labeling1,093 freelancers · 🇻🇳 #8Top 11%
  3. #144AI Model Training1,135 freelancers · 🇻🇳 #3Top 13%
  4. #249Data Annotation2,301 freelancers · 🇻🇳 #7Top 11%
  5. #3,044Virtual Assistance29,113 freelancers · 🇻🇳 #8Top 10%
  6. #5,139Data Entry53,630 freelancers · 🇻🇳 #17Top 10%