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Jairo Matos

@jairomatos

Child Development Psychologist at HCA Healthcare who improved pediatric AI training accuracy by 38%.

Dominican Republic
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At HCA Healthcare, I designed developmental psychology annotation frameworks for pediatric AI models, improving AI system training accuracy by 38%. I also built annotation pipelines for clinical child-interaction datasets using DSM-aligned developmental criteria.

I integrated cognitive assessment rubrics into AI test scenarios and evaluated model responses against child-development benchmarks, producing feedback that guided three model refinement cycles.

At TRUGlobal, I developed scenario libraries with 2.3k annotated cases for model fine-tuning and assessed educational content for age-appropriate cognitive load. I also evaluated multilingual child-language datasets and refined scoring rubrics using Bayley, WPPSI, and Vineland conventions.

Earlier, I applied child-development expertise to insurance risk models, financial guidance, digital platforms, and Siri interactions at Seguros APS, DataCrédito Experian, CA Soft, and Apple. My work has included pediatric case annotation, culturally relevant evaluation, and guidelines for age-appropriate AI and digital experiences.

Experience

Work history, roles, and key accomplishments

HH

Staff Software Engineer

HCA Healthcare

Mar 2025 - Sep 2026 (1 year 6 months)

Designed developmental psychology annotation frameworks for pediatric AI models, improving training accuracy by 38%. Built data annotation pipelines and integrated cognitive assessment rubrics into AI test case scenarios.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing
TR

Staff Software Engineer

TRUGlobal

Feb 2024 - Feb 2025 (1 year)

Developed AI system training scenario libraries for children's decision-making and peer influence, providing 2.3k annotated cases for model fine-tuning. Applied developmental psychology theory to evaluate AI-generated educational content.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing
SA

Senior Software Engineer

Seguros APS

Sep 2021 - Jan 2024 (2 years 4 months)

Constructed child development eligibility criteria for insurance risk models and annotated 9k pediatric case records. Designed AI system training test cases for edge scenarios, improving model recall by 29%.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing
DE

Software Engineer

DataCrédito Experian

Sep 2019 - Feb 2021 (1 year 5 months)

Analyzed psychosocial and cognitive assessment variables for financially vulnerable families, providing domain-grounded annotations. Developed data annotation schemas and evaluated AI-generated financial guidance for developmental appropriateness.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing
CS

Software Engineer

CA Soft

May 2018 - Aug 2019 (1 year 3 months)

Contributed child development domain expertise to digital platform content review workflows, annotating child-facing UX scenarios. Built annotation guidelines for children's digital commerce interaction data.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing
Apple logoAP

Software Engineer

Apr 2012 - Nov 2017 (5 years 7 months)

Designed developmental psychology evaluation protocols for Siri child-interaction scenarios and annotated large-scale digital commerce behavioral datasets. Built cognitive accessibility benchmarks for App Store content rating guidelines.

System Training
Data AnnotationModel EvaluationNLPPrompt EngineeringLLM Fine tuningMachine LearningQualitative AnalysisQuantitative ResearchDataset Curation
Corpus Annotation
Statistical Modeling
Psychometric Analysis
Data ValidationTest Case Design
Scenario Development
QA Review
Annotation Quality Control
Evaluation and Benchmarking
AWSGoogle Cloud PlatformAzureJiraConfluenceNotion
Output Review
Performance Monitoring
Feedback Documentation
Annotation Auditing

Education

Degrees, certifications, and relevant coursework

FPT University logoFU

FPT University

Bachelor of Computer Science, Computer Science

2001 - 2005

Bachelor of Computer Science from FPT University, completed from 2001 to 2005.

Tech stack

Software and tools used professionally

Availability

Looking for a job

Location

Dominican Republic

Authorized to work in

Salary expectations

60k+ USD

Job categories

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