Omar Muchunga

Key Skills

Software

Clickworker

Data Annotation Tech

Labelbox

Mindrift

Remotasks

Toloka

Scale AI

Top Subject Matter

No subject matter listed

Top Data Types

Audio

Image

Text

Top Task Types

Action Recognition

Audio Recording

Classification

Emotion Recognition

Evaluation Rating

Freelancer Overview

I have over six years of experience in data labeling and AI training data, specializing in audio transcription, speech-to-text annotation, and video subtitling for machine learning applications. At Scale AI, I worked extensively on annotating complex audio datasets for AI voice recognition systems, ensuring high accuracy and consistency across multilingual projects. My hands-on expertise includes correcting automated AI outputs, performing precise audio segmentation, and adapting linguistic nuances to improve model performance. In addition to my AI-focused work, I bring a strong background in legal and multimedia transcription, having created and optimized time-synced subtitles and captions for diverse content types using tools like Subtitle Edit, Aegisub, and SDL Trados. My attention to detail, deep understanding of transcription standards, and ability to meet tight deadlines have enabled me to deliver high-quality, impactful data for cutting-edge AI systems.

Labeling Experience

Multilingual Speech-to-Text Audio Annotation for Voice AI Training

LabelboxAudioTranslation LocalizationAudio Recording

As part of an AI voice model training initiative with Scale AI, I worked on a large-scale audio annotation project involving diverse English and Spanish datasets. My role included segmenting long-form speech, labeling speaker changes, correcting transcription errors, tagging environmental sounds, and aligning timestamps with high precision. I adhered to strict quality benchmarks and met aggressive delivery schedules to ensure the data met training-ready standards.

As part of an AI voice model training initiative with Scale AI, I worked on a large-scale audio annotation project involving diverse English and Spanish datasets. My role included segmenting long-form speech, labeling speaker changes, correcting transcription errors, tagging environmental sounds, and aligning timestamps with high precision. I adhered to strict quality benchmarks and met aggressive delivery schedules to ensure the data met training-ready standards.

2018 - 2021

Education

Work History