Jerezz A.

Key Skills

Software

Other

Appen

Labelbox

Top Subject Matter

AI training data for NLP tasks (text classification)

NLP annotation for sentiment

Topic Domain Expertise

Top Data Types

Text

Document

Top Task Types

Classification

Entity (NER) Classification

Freelancer Overview

Freelance AI Trainer / Data Labeler (Self-Employed, Remote). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Appen, and Labelbox. Education includes Bachelor of Science, Kenyatta University (2022). AI-training focus includes data types such as Text and Document and labeling workflows including Classification, Named Entity Recognition, and Sentiment Analysis.

Labeling Experience

Freelance AI Trainer / Data Labeler (Self-Employed, Remote)

OtherTextClassification

Freelance AI Trainer and Data Labeler performing text classification and annotation for multiple machine learning projects. I interpret and strictly adhere to complex labeling guidelines to maintain dataset consistency and high inter-annotator agreement. I complete quality assurance reviews on labeled datasets by identifying and correcting errors to protect data integrity. • Text classification and annotation using project labeling guidelines. • Quality assurance and consensus checking for labeled data. • Detailed error detection and correction with dataset integrity focus. • Feedback to project managers to refine labeling instructions.

2024 - Present

Data Entry Clerk (Jumia Kenya, Nairobi)

OtherDocumentClassification

Data Entry Clerk responsible for organizing, categorizing, and maintaining digital records with strong emphasis on accuracy. I supported data migration and data cleaning initiatives by ensuring records were properly formatted and error-free. I developed filing systems to improve retrieval efficiency while maintaining confidentiality of sensitive information. • Data migration support and data cleaning. • Error-free record formatting and maintenance. • Document categorization and organization. • Confidential handling of sensitive information.

2023 - 2024

Data Annotator (Appen, Remote)

AppenTextClassification

Data Annotator at Appen labeling and categorizing text entries for natural language processing tasks. I performed sentiment analysis, topic tagging, and intent recognition while ensuring accuracy and consistency through review and correction of flagged items. I aligned with team guideline interpretation through calibration sessions and guideline clarification with team leads. • Sentiment analysis, topic tagging, and intent recognition. • Review, correction, and consistency checks for flagged text. • Calibration sessions to ensure uniform guideline interpretation. • Quota-focused labeling with quality preservation.

2023 - 2023

Administrative Assistant - Various Organizations

LabelboxTextClassificationEntity (NER) Classification

You provided administrative support by managing digital and physical filing systems and keeping records accurately labeled for easy retrieval. You assisted with migrating physical files to digital formats to improve search efficiency for the department. You prepared reports, presentations, and correspondence for senior management and handled scheduling and cross-department communication. • Managed filing systems and ensured records were retrievable • Assisted digital migration of physical files for better search efficiency • Prepared reports, presentations, and correspondence for senior management • Scheduled meetings, managed calendars, and maintained confidentiality

2022 - 2023

Education

Work History