Samson Obimbo

Key Skills

Software

Label Studio

Figure Eight

Top Subject Matter

Natural Language Processing

Computer Vision

Trust and Safety

Top Data Types

Text

Image

Top Task Types

Classification

Freelancer Overview

Senior AI Trainer and Evaluator. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Label Studio, Figure Eight, and Internal. Education includes Master of Science, Strathmore University (2016) and Bachelor of Science, University of Nairobi (2014). AI-training focus includes data types such as Text and Image and labeling workflows including Evaluation, Rating, and Classification.

Labeling Experience

Senior AI Trainer and Evaluator

Label StudioText

As a Senior AI Trainer and Evaluator, led AI training initiatives across 20+ projects, focusing on annotation, model evaluation, and Trust and Safety improvements. Enhanced natural language processing and computer vision model metrics by 30% through structured feedback and analysis. Collaborated on cross-functional projects to provide multimedia annotation and quality analytics reviews.• Led Red Teaming exercises to identify and document AI vulnerabilities. • Provided detailed rationales and ensured ethical standards in annotations. • Accurately labeled over 5,000 assets for model improvement. • Utilized tools like Label Studio, CVAT, and proprietary platforms for annotation and evaluation.

As a Senior AI Trainer and Evaluator, led AI training initiatives across 20+ projects, focusing on annotation, model evaluation, and Trust and Safety improvements. Enhanced natural language processing and computer vision model metrics by 30% through structured feedback and analysis. Collaborated on cross-functional projects to provide multimedia annotation and quality analytics reviews.• Led Red Teaming exercises to identify and document AI vulnerabilities. • Provided detailed rationales and ensured ethical standards in annotations. • Accurately labeled over 5,000 assets for model improvement. • Utilized tools like Label Studio, CVAT, and proprietary platforms for annotation and evaluation.

2019 - Present

AI Training Specialist

Figure EightText

As an AI Training Specialist, conducted comprehensive evaluations and high-quality annotations for text, image, and video data. Delivered feedback resulting in a 25% reduction in AI model error rates. Managed annotation workflows and supported trust and safety efforts to reduce AI bias.• Oversaw workflow quality for text, image, and video annotation projects. • Identified and mitigated biases in AI model outputs. • Provided actionable annotation and evaluation improvements. • Ensured ethically sourced inputs for model development.

As an AI Training Specialist, conducted comprehensive evaluations and high-quality annotations for text, image, and video data. Delivered feedback resulting in a 25% reduction in AI model error rates. Managed annotation workflows and supported trust and safety efforts to reduce AI bias.• Oversaw workflow quality for text, image, and video annotation projects. • Identified and mitigated biases in AI model outputs. • Provided actionable annotation and evaluation improvements. • Ensured ethically sourced inputs for model development.

2017 - 2019

Junior AI Annotator

ImageClassification

As a Junior AI Annotator, contributed to AI training through annotation and evaluation of model performance. Developed skills in image and video annotation, quality analytics, and trust and safety. Performed initial evaluations and structured feedback for AI enhancement.• Annotated image and video data to enhance model training. • Supported Trust and Safety reviews in AI workflows. • Gained expertise in best practices for annotation and evaluation. • Provided feedback to refine early-stage AI models.

As a Junior AI Annotator, contributed to AI training through annotation and evaluation of model performance. Developed skills in image and video annotation, quality analytics, and trust and safety. Performed initial evaluations and structured feedback for AI enhancement.• Annotated image and video data to enhance model training. • Supported Trust and Safety reviews in AI workflows. • Gained expertise in best practices for annotation and evaluation. • Provided feedback to refine early-stage AI models.

2015 - 2016

Education

Work History