Dozie D.

Key Skills

Software

Appen

Top Subject Matter

NLP datasets and machine learning training data

NLP and computer vision dataset labeling

Top Data Types

Text

Image

Top Task Types

Classification

Freelancer Overview

Annotation Specialist — Appen (March 2025–Present). Core strengths include Appen, N, and A. Education includes Bachelor of Science, Nnamdi Azikiwe University (2018). AI-training focus includes data types such as Text and labeling workflows including Classification and Entity (NER).

Labeling Experience

Data Annotator — Atlas capture (May 2025–Presnet)

Text

Labeled and categorized data for NLP and computer vision tasks while maintaining high accuracy across multiple projects. Provided feedback to refine annotation workflows and reduce ambiguity in labeling guidelines. Supported dataset consistency through careful categorization and quality-oriented labeling practices. • Categorized NLP data for downstream training tasks • Maintained annotation accuracy above target thresholds • Reviewed and improved labeling guidelines via feedback • Contributed to workflow refinement to reduce labeling ambiguity

2025 - Present

Annotation Specialist — Appen (March 2025–Present)

AppenTextClassification

Annotated large datasets to support machine learning model training while following detailed annotation guidelines to ensure consistency and accuracy. Performed quality checks and reviewed peer annotations to maintain high data integrity. Collaborated with project managers and data scientists to clarify edge cases and improve annotation instructions. • Labeled text data for NLP-focused model training • Ensured adherence to complex guideline requirements • Conducted peer review and secondary QA checks • Communicated edge cases to refine dataset instructions

2025 - Present

Education

Work History