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Nthei Mary Rasekoai

Nthei Mary Rasekoai

AI Data Annotator - ASR Evaluation Specialist

Lesotho flagMaseru, Lesotho
$10.00/hrIntermediateClickworkerMindriftToloka

Key Skills

Software

ClickworkerClickworker
MindriftMindrift
TolokaToloka

Top Subject Matter

Artificial Intelligence/Machine Learning
Data Annotation & Data Quality
Speech and Audio Processing

Top Data Types

TextText
ImageImage
AudioAudio

Top Task Types

Evaluation/RatingEvaluation/Rating
TranscriptionTranscription
Question AnsweringQuestion Answering
Object DetectionObject Detection

Freelancer Overview

I have experience working with AI, particularly through Toloka AI and in my data annotation and evaluation roles with Toloka, my tasks included labeling images, categorizing content, transcribing audio and evaluating search results for relevance and accuracy. All of this required great attention to detail, consistency and the ability to follow complex guidelines. Through my experience at Toloka AI, I managed to get a proper understanding of how human input is used to train and refine AI systems. In addition to this, I participated in AI related tasks on QuikRSignal. On this platform, my exposure to AI was expanded to more applied and dynamic environments, particularly in robotics and automation focused tasks. I have also contributed to data validation, quality control and output verification processes. I feel like combined, these experiences show that I'm not just familiar with AI but I possess the ability to add value, meet performance expectations and operate effectively in these fast-paced, evolving AI systems.

IntermediateEnglish

Labeling Experience

Audio Quality Evaluation

AudioEvaluation Rating
This was a large-scale Automatic Speech Recognition project whose main aim was to improve the reliability and accuracy of speech to text systems. My main role was to compare spoken content against transcripts to assess accuracy, completeness, and contextual alignment, I also identified discrepancies such as omissions, insertions and mispronunciations. I flagged low quality recordings and ensured strict adherence to the annotation guidelines. I operated within a high-volume environment and I always delivered precise, reliable outputs while meeting the defined accuracy and quality standards.

This was a large-scale Automatic Speech Recognition project whose main aim was to improve the reliability and accuracy of speech to text systems. My main role was to compare spoken content against transcripts to assess accuracy, completeness, and contextual alignment, I also identified discrepancies such as omissions, insertions and mispronunciations. I flagged low quality recordings and ensured strict adherence to the annotation guidelines. I operated within a high-volume environment and I always delivered precise, reliable outputs while meeting the defined accuracy and quality standards.

2024 - 2025

Education

N

National University of Lesotho

Bachelor of Commerce, Accounting

Bachelor of Commerce
2010 - 2014

Work History

L

Lesotho Highlands Development Authority

Assistant Accountant

Maseru
2017 - 2022
L

Lesotho Highlands Development Authority

Acting Accountant – Accounts Payable

Maseru
2019 - 2019