Dennis R.

Key Skills

Software

Labelbox

Other

Top Subject Matter

Computer Vision

Autonomous Vehicles

E-commerce Product Data & Taxonomy

Top Data Types

Image

Text

Document

Top Task Types

Bounding Box

Classification

Freelancer Overview

Data Annotation Specialist. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox and Other. Education includes Bachelor of Science, Kenyatta University (2022) and Certificate, Coursera (2022). AI-training focus includes data types such as Image and Text and labeling workflows including Bounding Box and Classification.

Labeling Experience

Data Annotation Specialist

LabelboxImageBounding Box

Annotated and labeled diverse datasets including images, text, and audio for machine learning model training and validation. Consistently maintained a 98.5% accuracy rate on tasks while completing over 150 items daily. Utilized advanced annotation tools across 15+ projects, achieving more than 50,000 annotations in total. • Used Labelbox, CVAT, and custom annotation platforms extensively • Performed image classification and quality assurance reviews • Responsible for computer vision, autonomous vehicles, and product classification tasks • Collaborated closely with project managers and peers

2023 - Present

Junior Data Labeler

OtherTextClassification

Labeled and categorized text data for natural language processing projects, focusing on multilingual datasets. Performed sentiment analysis, annotated named entities, and ensured accuracy in sentiment and classification labeling. Achieved over 40,000 text annotations with 97%+ accuracy across eight projects. • Utilized custom and standard annotation tools for text classification • Contributed to sentiment analysis and NLP model development • Thoroughly documented annotation decisions and results • Ensured high-volume, accurate labeling in English and Swahili

2022 - 2022

Education

Work History