Kivungi Muthanga

Key Skills

Software

Sama

Remotasks

Appen

Top Subject Matter

General AI/ML datasets

Computer Vision

Nlp Domain Expertise

Top Data Types

Image

Text

Top Task Types

Bounding Box

Classification

Freelancer Overview

Data Labeling Specialist. Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Sama, Remotasks, and Appen. Education includes Bachelor of Science, Jaramogi Oginga Odinga University of Science and Technology (2020) and Kenya Certificate of Secondary Education, St Luke’s High School (2015). AI-training focus includes data types such as Image and Text and labeling workflows including Bounding Box and Classification.

Labeling Experience

Data Labeling Specialist

SamaImageBounding Box

As a Data Labeling Specialist at Sama, I annotated large-scale datasets including images, text, and audio for machine learning models. I rigorously followed annotation guidelines to ensure consistency and high-quality outputs. I maintained accuracy rates above 98% for multiple AI training projects. • Conducted data validation and quality checks for improved dataset accuracy • Collaborated with QA teams and project managers to refine annotation workflows • Used annotation tools such as Labelbox, CVAT, and Supervisely • Supported both independent and distributed team assignments

As a Data Labeling Specialist at Sama, I annotated large-scale datasets including images, text, and audio for machine learning models. I rigorously followed annotation guidelines to ensure consistency and high-quality outputs. I maintained accuracy rates above 98% for multiple AI training projects. • Conducted data validation and quality checks for improved dataset accuracy • Collaborated with QA teams and project managers to refine annotation workflows • Used annotation tools such as Labelbox, CVAT, and Supervisely • Supported both independent and distributed team assignments

2023 - Present

Data Annotation Contributor

AppenTextClassification

As a Data Annotation Contributor with Appen, I contributed to AI training datasets through detailed labeling and categorization of text data. I evaluated and annotated search results as well as performed entity tagging. I achieved high acceptance rates through consistent and accurate work. • Focused on text-based data annotation tasks • Maintained high-quality data standards per project guidelines • Utilized the Appen platform for all labeling and review activities • Contributed remotely to global annotation projects

As a Data Annotation Contributor with Appen, I contributed to AI training datasets through detailed labeling and categorization of text data. I evaluated and annotated search results as well as performed entity tagging. I achieved high acceptance rates through consistent and accurate work. • Focused on text-based data annotation tasks • Maintained high-quality data standards per project guidelines • Utilized the Appen platform for all labeling and review activities • Contributed remotely to global annotation projects

2022 - 2022

AI Data Annotator (Freelance)

RemotasksImageBounding Box

As an AI Data Annotator for Remotasks, I performed annotation tasks for computer vision and NLP projects, labeling images and text data. I applied bounding boxes, polygons, and classification methods to datasets. I consistently met productivity and quality targets during the engagement. • Tagged text data for sentiment analysis and intent detection • Used classification and segmentation for image datasets • Utilized Remotasks proprietary platform for labeling tasks • Worked remotely, balancing multiple project deadlines

As an AI Data Annotator for Remotasks, I performed annotation tasks for computer vision and NLP projects, labeling images and text data. I applied bounding boxes, polygons, and classification methods to datasets. I consistently met productivity and quality targets during the engagement. • Tagged text data for sentiment analysis and intent detection • Used classification and segmentation for image datasets • Utilized Remotasks proprietary platform for labeling tasks • Worked remotely, balancing multiple project deadlines

2022 - 2022

Education

Work History