Dennis K.

Key Skills

Software

CVAT

Other

CloudFactory

Top Subject Matter

Computer Vision (Object Detection, Segmentation)

NLP Text Classification and Sentiment Analysis

Multi-modal Data Annotation & Content Moderation

Top Data Types

Image

Text

Audio

Top Task Types

Bounding Box

Entity (NER) Classification

Classification

Question Answering

Freelancer Overview

AI Trainer / Data Labeler (Remote Freelance Projects). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT, Other, and CloudFactory. Education includes Bachelor of Science, Rongo University (2018) and Kenya Certificate of Secondary Education, Kapenguria Boys High School (2013). AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Bounding Box, Entity (NER) Classification, and Classification.

Labeling Experience

AI Trainer / Data Labeler (Remote Freelance Projects)

OtherTextEntity (NER) Classification

Conducted text classification and sentiment analysis labeling to support NLP-based AI models. Validated and cleaned labeled text data to maintain consistency for training and evaluation. Coordinated with remote project teams to deliver high-quality datasets within scheduled timelines. • Labeled text for classification and sentiment analysis tasks • Reviewed labeled datasets to improve quality and reduce mistakes • Maintained consistent labeling standards across remote team workflows • Delivered datasets prepared for machine learning and AI model training

2023 - Present

AI Trainer / Data Labeler (Remote Freelance Projects)

CVATImageBounding Box

Provided large-scale image and video annotation for AI/computer vision datasets, including object detection and bounding box labeling. Ensured high-quality outputs by performing dataset reviews for quality assurance and error reduction. Supported downstream AI training requirements by delivering consistent annotations aligned with project guidelines. • Annotated 300,000+ image and video items for computer vision use cases • Performed object detection and bounding box annotation tasks • Achieved ~98% annotation accuracy on labeled outputs • Reduced annotation errors by ~30% through QA review processes

2023 - Present

Data Annotation Specialist (CloudFactory Kenya / Remote Projects)

CloudFactoryAudioClassification

Processed and labeled large datasets for machine learning and AI training across multiple modalities, including image, audio, and text. Assisted with content moderation and data validation to ensure annotated data met quality requirements. Maintained organized annotation records and documentation to improve workflow efficiency in remote projects. • Completed image, audio, and text annotation work for AI training • Supported content moderation and dataset validation tasks • Improved workflow efficiency with well-maintained annotation documentation • Met accuracy and productivity targets in fast-paced environments

2021 - 2023

Data Analyst & Data Entry Specialist (Freelance & Remote Work)

TextQuestion Answering

Managed data entry, data cleaning, and dataset validation activities to ensure data consistency for analysis and reporting. Conducted transcription and online research to compile accurate information for client and business projects. Organized data in spreadsheets to improve reliability and reporting efficiency. • Completed transcription and administrative support tasks • Performed data cleaning and validation for consistency • Conducted online research and prepared reports • Used Excel and Google Sheets to organize and maintain datasets

2019 - 2021

Education

Work History