Duncan Kipchirchir

Key Skills

Software

Labelbox

CVAT

Top Subject Matter

Computer Vision

AI Surveillance Analytics

Speech Recognition & NLP

Top Data Types

Image

Video

Audio

Top Task Types

Bounding Box

Tracking

Transcription

Freelancer Overview

Senior AI Data Labeler / AI Training Specialist. Core strengths include Labelbox, CVAT, and Audacity. Education includes Diploma in Information Technology, Rochester Institute of Technology Dubai (2023) and High School Certificate, Dubai College (2019). AI-training focus includes data types such as Image, Video, and Audio and labeling workflows including Bounding Box, Tracking, and Transcription.

Labeling Experience

Senior AI Data Labeler / AI Training Specialist

AudioTranscription

Managed annotation and transcription of extensive audio datasets for speech recognition technology. Roles included speaker labeling, sound classification, and transcription accuracy reviews. Efforts contributed directly to state-of-the-art NLP model preparation. • Transcribed and labeled speech and audio data • Reviewed and improved audio recognition labeling workflows • Utilized Praat and Audacity for high-precision annotation • Achieved project standards of 95% transcription accuracy

Managed annotation and transcription of extensive audio datasets for speech recognition technology. Roles included speaker labeling, sound classification, and transcription accuracy reviews. Efforts contributed directly to state-of-the-art NLP model preparation. • Transcribed and labeled speech and audio data • Reviewed and improved audio recognition labeling workflows • Utilized Praat and Audacity for high-precision annotation • Achieved project standards of 95% transcription accuracy

2022 - Present

Senior AI Data Labeler / AI Training Specialist

CVATVideoTracking

Deep involvement in multi-frame video annotation for object tracking and motion analytics. Tasks included detailed behavior analysis and object detection across surveillance footage. Labeling ensured high-quality datasets for modern AI models. • Conducted frame-by-frame labeling for surveillance analytics • Executed complex multi-object tracking assignments • Validated data quality for machine learning readiness • Collaborated on project deadlines with global teams

Deep involvement in multi-frame video annotation for object tracking and motion analytics. Tasks included detailed behavior analysis and object detection across surveillance footage. Labeling ensured high-quality datasets for modern AI models. • Conducted frame-by-frame labeling for surveillance analytics • Executed complex multi-object tracking assignments • Validated data quality for machine learning readiness • Collaborated on project deadlines with global teams

2022 - Present

Senior AI Data Labeler / AI Training Specialist

LabelboxImageBounding Box

This experience focused on annotating large-scale image datasets using bounding boxes and segmentation techniques. Advanced methods such as multi-object and semantic segmentation were applied for precise model training. Detailed labeling supported the development of computer vision AI solutions. • Labeled over 50,000 images for object detection projects • Executed quality assurance to achieve 95% accuracy benchmarks • Utilized platforms like Labelbox, CVAT, and SuperAnnotate • Coordinated annotation consistency with global AI teams

This experience focused on annotating large-scale image datasets using bounding boxes and segmentation techniques. Advanced methods such as multi-object and semantic segmentation were applied for precise model training. Detailed labeling supported the development of computer vision AI solutions. • Labeled over 50,000 images for object detection projects • Executed quality assurance to achieve 95% accuracy benchmarks • Utilized platforms like Labelbox, CVAT, and SuperAnnotate • Coordinated annotation consistency with global AI teams

2022 - Present

Education

Work History