Colon Joey Alexander
Arizona
Summary
Detail-oriented AI Training Specialist with hands-on experience in data annotation, model evaluation, and quality assurance across fast-paced technology and e-commerce environments. Proven ability to analyze large datasets, improve data accuracy, and optimize workflows to enhance machine learning performance. Strong background in structured labeling, natural language data review, and performance reporting. Recognized for delivering high-accuracy outputs, meeting strict productivity benchmarks, and maintaining data integrity standards in remote and hybrid settings.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Data Quality Analyst
Amazon
Orlando, Florida
03.2022 - Current
- Evaluated and validated large datasets supporting machine learning models, improving annotation accuracy by 18% through structured quality review processes
- Conducted detailed audits of labeled data to ensure compliance with AI training guidelines and internal performance standards
- Identified data inconsistencies and implemented corrective workflows that reduced rework rates by 22%
- Collaborated with cross-functional teams to refine labeling instructions, increasing team productivity by 15%
- Generated performance reports tracking error patterns, model drift indicators, and quality benchmarks
Data Annotation Specialist
Appen
Remote, U.S.
01.2021 - 02.2022
- Labeled and categorized text, image, and search relevance data used to train NLP and computer vision models
- Maintained 97% average quality rating across multiple AI evaluation projects
- Reviewed AI-generated responses for accuracy, bias, and contextual relevance
- Followed strict annotation taxonomies and confidentiality standards while meeting daily throughput targets
- Contributed to calibration sessions that improved inter-annotator agreement scores by 12%
Operations Support Associate
Walmart
Kissimmee, Florida
06.2019 - 12.2020
- Analyzed inventory and sales data to identify discrepancies, reducing stock variances by 14%
- Supported digital system updates and ensured data accuracy across internal tracking platforms
- Trained new associates on process compliance and data entry accuracy standards
- Streamlined reporting workflows, decreasing weekly reconciliation time by 20%
Education
Master of Science - Artificial Intelligence
Florida Institute of Technology
Melbourne, Florida01-2022
Bachelor of Science - Information Technology
University of Central Florida
Orlando, Florida01-2019
Skills
- AI Model Training Support
- Data Annotation & Labeling
- Natural Language Processing (NLP) Review
- Data Quality Assurance
- Model Output Evaluation
- Dataset Curation & Cleaning
- Prompt Evaluation & Refinement
- Pattern Recognition
- Analytical Thinking
- Process Optimization
- Performance Metrics Tracking
- Cross-Functional Collaboration
- Remote Workflow Management
- Documentation & Reporting
- Python (Basic Scripting)
- SQL (Data Querying)
- Microsoft Excel (Advanced Functions, Pivot Tables)
- Google Sheets
- Jupyter Notebook
- Labelbox
- Scale AI Platform
- Microsoft Office Suite
- Google Workspace
- Slack
- JIRA
- GitHub
Certification
- Google Data Analytics Professional Certificate
- Machine Learning Foundations Course – Coursera
- Data Annotation & AI Model Evaluation Training Program
- Python for Data Analysis (Continuing Education)
Additional Strengths
- Strong attention to detail with high accuracy under deadline-driven conditions
- Ability to interpret complex guidelines and apply consistent judgment
- Adaptable in evolving AI environments and model iteration cycles
- Effective written communication for documentation and feedback reports
- Proven reliability in remote and independent work settings
Languages
English
Timeline
Data Quality Analyst
Amazon
03.2022 - Current
Data Annotation Specialist
Appen
01.2021 - 02.2022
Operations Support Associate
Walmart
06.2019 - 12.2020
Bachelor of Science - Information Technology
University of Central Florida
Master of Science - Artificial Intelligence
Florida Institute of Technology