Melissa Mungai

Key Skills

Software

iMerit

Other

Top Subject Matter

AI model training and evaluation

Video data annotation for computer vision

Audio transcription and labeling

Top Data Types

Text

Video

Audio

Image

Top Task Types

Object Detection

Transcription

Freelancer Overview

AI Trainer and Data Annotator. Core strengths include iMerit and Other. Education includes Bachelor of Science, Chuka University. AI-training focus includes data types such as Text, Video, and Audio and labeling workflows including Evaluation, Rating, and Object Detection.

Labeling Experience

AI Trainer and Data Annotator

ImeritText

In this role as an AI Trainer and Data Annotator at iMerit, I evaluated AI-generated responses for accuracy, relevance, and quality. I provided feedback and corrections to help improve AI models and annotated text-based data according to strict guidelines. I ensured data quality by checking for inconsistencies and bias throughout datasets. • Reviewed and rated AI-generated outputs to support model improvement. • Provided structured feedback and corrections to enhance AI learning. • Applied annotation guidelines to maintain reliability and consistency. • Checked and validated data accuracy while correcting errors.

In this role as an AI Trainer and Data Annotator at iMerit, I evaluated AI-generated responses for accuracy, relevance, and quality. I provided feedback and corrections to help improve AI models and annotated text-based data according to strict guidelines. I ensured data quality by checking for inconsistencies and bias throughout datasets. • Reviewed and rated AI-generated outputs to support model improvement. • Provided structured feedback and corrections to enhance AI learning. • Applied annotation guidelines to maintain reliability and consistency. • Checked and validated data accuracy while correcting errors.

2021 - Present

Video Annotator

OtherVideoObject Detection

As a Video Annotator at Atlas Capture, I labeled and tracked objects in video frames using bounding boxes and segments. I classified actions and events and followed detailed annotation guidelines for quality consistency. I ensured accuracy in object tracking and event identification across projects. • Identified and tagged objects such as people and vehicles in video data. • Tracked movements and transitions using frame-by-frame annotation. • Outlined individual objects with accurate bounding boxes or polygons. • Classified actions and ensured adherence to annotation standards.

As a Video Annotator at Atlas Capture, I labeled and tracked objects in video frames using bounding boxes and segments. I classified actions and events and followed detailed annotation guidelines for quality consistency. I ensured accuracy in object tracking and event identification across projects. • Identified and tagged objects such as people and vehicles in video data. • Tracked movements and transitions using frame-by-frame annotation. • Outlined individual objects with accurate bounding boxes or polygons. • Classified actions and ensured adherence to annotation standards.

2025 - 2026

Audio Transcriber

OtherAudioTranscription

As an Audio Transcriber for REV, I converted spoken audio recordings into accurate written text. I ensured high-accuracy transcription while differentiating between speakers and following established formatting rules. I consistently proofread and edited transcripts for clarity and correctness. • Listened to and transcribed audio with varied accents and audio quality. • Accurately captured grammar, punctuation, and speaker identification. • Applied specified formatting, including timestamps and labels. • Reviewed transcripts for quality and resolved discrepancies.

As an Audio Transcriber for REV, I converted spoken audio recordings into accurate written text. I ensured high-accuracy transcription while differentiating between speakers and following established formatting rules. I consistently proofread and edited transcripts for clarity and correctness. • Listened to and transcribed audio with varied accents and audio quality. • Accurately captured grammar, punctuation, and speaker identification. • Applied specified formatting, including timestamps and labels. • Reviewed transcripts for quality and resolved discrepancies.

2024 - 2026

Education

Work History