Digital Marketing Specialist | SEO | Google Ads | GA4 | WordPress | AI Evaluation

Based in Hanoi, Vietnam.

I work across SEO, Digital Marketing, AI evaluation, and data quality, with a focus on structured analysis, practical execution, and evidence-based decision making.

• Technical SEO
• On-page SEO
• Keyword Research & Clustering
• Content Optimization
• Internal Linking
• Google Search Console
• Google Ads
• GA4
• WordPress
• Zalo ZNS Campaigns

• AI Response Evaluation
• Instruction Following
• Factuality & Accuracy
• Relevance
• Completeness
• Response Quality
• Safety & Policy Compliance
• Pairwise Comparison
• Data Quality Evaluation
• Annotation QA
• Structured Evaluation
• Evidence-based Judgment

Practical SEO frameworks, case studies, and digital marketing projects.

→ View SEO Portfolio

Includes:

• SEO Frameworks
• Technical SEO & GSC
• Content Optimization
• Internal Linking
• Keyword Clustering
• Google Ads
• Analytics Tracking
• WordPress Optimization
• Zalo ZNS Campaigns

A practical portfolio focused on structured AI evaluation, annotation, comparative evaluation, and data quality workflows.

→ View AI Evaluation Portfolio

Includes:

• Instruction Following
• Factuality & Accuracy
• Relevance
• Completeness
• Response Quality
• Safety & Policy Compliance
• Pairwise Comparison
• Data Quality
• Evaluation Rubrics
• Synthetic Evaluation Examples

I focus on turning requirements into structured evaluation or execution processes.

Understand → Analyze → Apply Criteria → Identify Evidence → Make a Decision → Document → QA

For AI evaluation and data quality work, I prioritize:

• Clear evaluation criteria
• Evidence before judgment
• Consistent application of rules
• Reproducible decisions
• Explicit handling of uncertainty
• Structured quality assurance

SEO / Marketing

Google Search Console Google Ads GA4 Google Tag Manager Screaming Frog WordPress WooCommerce Elementor

AI / Data Quality

AI Evaluation Data Annotation Quality Assurance Structured Evaluation Rubric Design Pairwise Comparison

Other

GitHub HTML SEO Analytics Content Optimization

My work combines:

• Search engine optimization
• Website and content optimization
• Performance analysis
• Digital advertising
• Analytics and tracking
• Structured AI response evaluation
• Data quality and annotation review

The repositories on this profile separate these areas into focused portfolios so that each body of work can be reviewed independently.

Portfolio examples are designed to demonstrate methodology and practical thinking without exposing confidential business information.

I do not publish:

• Private client data
• Confidential company information
• Credentials
• Proprietary datasets
• Private evaluation tasks
• Personally identifiable information

LinkedIn: Duc Anh Nguyen

GitHub: @ducna28work-ai