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Khanhgia Dong

Khanhgia Dong

Senior AI Language Specialist – AI Training & Evaluation

Vietnam flagHa Noi, Vietnam
$10.00/hrExpertOther

Key Skills

Software

Other

Top Subject Matter

Large Language Models
AI-generated Text
Conversational AI

Top Data Types

TextText
DocumentDocument

Top Task Types

ClassificationClassification
Entity (NER) ClassificationEntity (NER) Classification

Freelancer Overview

Senior AI Language Specialist – AI Training & Evaluation. Core strengths include Other. Education includes Master of Arts, N/A (2022). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

ExpertEnglish

Labeling Experience

Linguistic Annotator / NLP Data Specialist

OtherTextEntity Ner Classification
As a Linguistic Annotator and NLP Data Specialist, I executed structured text annotation following detailed linguistic and semantic protocols. My work involved entity and error classification, intent labeling, and analysis of linguistic features for NLP model improvement. I adhered closely to project-specific guidelines and contributed feedback to strengthen annotation standards. • Annotated data for entity recognition and semantic features. • Labeled intents and classified linguistic phenomena. • Reported ambiguous or unclear cases for guideline refinement. • Supported NLP model training with high-quality labeled data.

As a Linguistic Annotator and NLP Data Specialist, I executed structured text annotation following detailed linguistic and semantic protocols. My work involved entity and error classification, intent labeling, and analysis of linguistic features for NLP model improvement. I adhered closely to project-specific guidelines and contributed feedback to strengthen annotation standards. • Annotated data for entity recognition and semantic features. • Labeled intents and classified linguistic phenomena. • Reported ambiguous or unclear cases for guideline refinement. • Supported NLP model training with high-quality labeled data.

Present

Language Quality Assurance Specialist / Content Reviewer

OtherTextClassification
As a Language Quality Assurance Specialist and Content Reviewer, I reviewed and edited English and Vietnamese dataset content for AI training. I ensured linguistic quality, coherence, and audience-appropriate register in large-scale text corpora. My editing and dataset review contributed to higher precision and consistency in language models. • Checked for grammatical and semantic accuracy. • Standardized tone and minimized dataset variation. • Evaluated pragmatic effectiveness of content. • Maintained quality assurance across diverse use cases.

As a Language Quality Assurance Specialist and Content Reviewer, I reviewed and edited English and Vietnamese dataset content for AI training. I ensured linguistic quality, coherence, and audience-appropriate register in large-scale text corpora. My editing and dataset review contributed to higher precision and consistency in language models. • Checked for grammatical and semantic accuracy. • Standardized tone and minimized dataset variation. • Evaluated pragmatic effectiveness of content. • Maintained quality assurance across diverse use cases.

Present

AI Response Rater / Linguistic Quality Analyst

OtherText
As an AI Response Rater and Linguistic Quality Analyst, I performed nuanced rating of AI-generated responses across multiple linguistic layers. I applied detailed criteria for factual alignment, tone, intent fulfillment, and language precision. My assessments spanned both individual responses and multi-turn conversational exchanges. • Detected linguistic errors and pragmatic failures in AI outputs. • Documented recurring model weaknesses with targeted feedback. • Ensured consistency in guideline application for edge cases. • Rated for both surface-level and deep linguistic quality.

As an AI Response Rater and Linguistic Quality Analyst, I performed nuanced rating of AI-generated responses across multiple linguistic layers. I applied detailed criteria for factual alignment, tone, intent fulfillment, and language precision. My assessments spanned both individual responses and multi-turn conversational exchanges. • Detected linguistic errors and pragmatic failures in AI outputs. • Documented recurring model weaknesses with targeted feedback. • Ensured consistency in guideline application for edge cases. • Rated for both surface-level and deep linguistic quality.

Present

Senior AI Language Specialist – AI Training & Evaluation

OtherText
As a Senior AI Language Specialist, I evaluated, rated, and improved AI-generated text outputs in large-scale LLM training workflows. My work focused on linguistic accuracy, coherence, semantic and pragmatic appropriateness, and mitigating bias in model outputs. I consistently applied complex guideline frameworks across diverse content and provided structured, detailed feedback to optimize AI system performance. • Rated and reviewed AI responses for correctness, clarity, and contextual relevance. • Flagged bias, logical gaps, and culturally inappropriate expressions. • Maintained high accuracy and productivity under strict quality expectations. • Collaborated remotely to calibrate and update evaluation standards.

As a Senior AI Language Specialist, I evaluated, rated, and improved AI-generated text outputs in large-scale LLM training workflows. My work focused on linguistic accuracy, coherence, semantic and pragmatic appropriateness, and mitigating bias in model outputs. I consistently applied complex guideline frameworks across diverse content and provided structured, detailed feedback to optimize AI system performance. • Rated and reviewed AI responses for correctness, clarity, and contextual relevance. • Flagged bias, logical gaps, and culturally inappropriate expressions. • Maintained high accuracy and productivity under strict quality expectations. • Collaborated remotely to calibrate and update evaluation standards.

Present

Education

N

N/A

Master of Arts, Linguistics

Master of Arts
2020 - 2022

Work History

O

OpenTrain

Data Annotation Specialist

Ha Noi
2025 - 2026