Kelvin Toroitich

Key Skills

Software

Appen

Labelbox

Label Studio

Roboflow

Scale AI

SuperAnnotate

V7 Labs

Top Subject Matter

No subject matter listed

Top Data Types

Computer Code Programming

Image

Text

Top Task Types

Computer Programming Coding

Data Collection

Prompt Response Writing SFT

Question Answering

Translation Localization

Freelancer Overview

Results-driven AI Training Specialist with 4+ years of experience in machine learning data preparation, annotation, and model training. Expertise in computer vision, natural language processing, and quality assurance for large-scale datasets. Proven track record of improving model accuracy by 15-25% through meticulous data curation and innovative labeling strategies. Strong background in East African market applications and multilingual data processing.

Labeling Experience

Video data labeling

LabelboxVideoObject DetectionAction Recognition

Matches Annotated: 48 World Cup matches (144+ hours of footage) Data Points: 2.8M player positions, 847K ball positions, 156K events Players Tracked: 30 teams × 23 players = 690 unique player profiles Accuracy Achieved: 97.8% tracking precision with <3% inter-annotator variance

Matches Annotated: 48 World Cup matches (144+ hours of footage) Data Points: 2.8M player positions, 847K ball positions, 156K events Players Tracked: 30 teams × 23 players = 690 unique player profiles Accuracy Achieved: 97.8% tracking precision with <3% inter-annotator variance

2023 - 2024

Image Classification

LabelboxImageText GenerationObject Detection

Radiology imaging QA for medical AI

Radiology imaging QA for medical AI

2022 - 2024

Education

Work History