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Nomsa Phiri

Nomsa Phiri

AI Labeling specialist

South Africa flagJohannesburg, South Africa
$5.00/hrExpertLabelboxScale AISurge AI

Key Skills

Software

LabelboxLabelbox
Scale AIScale AI
Surge AISurge AI
TelusTelus
AppenAppen

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage
TextText
VideoVideo

Top Task Types

Audio RecordingAudio Recording
ClassificationClassification
Evaluation/RatingEvaluation/Rating
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Question AnsweringQuestion Answering

Freelancer Overview

I am an experienced AI Training and Data Annotation Specialist with a strong focus on evaluating images, videos, and text to improve AI accuracy and contextual understanding. I have hands-on experience labeling customer interactions, transaction data, and multimedia content to enhance chatbot performance, recommendation systems, and automated workflows. My work emphasizes precision, consistency, and adherence to project guidelines, ensuring high-quality datasets for AI training. I am skilled in reviewing and analyzing complex data, identifying patterns, and providing actionable insights to optimize AI models. With a background in customer service, technical support, and data handling, I bring a unique combination of analytical thinking, attention to detail, and domain knowledge, making me well-suited for diverse AI training and data labeling projects.

ExpertZuluEnglish

Labeling Experience

Appen

Image & Video Annotation for AI Evaluation

AppenImageBounding BoxClassification
Reviewed and labeled images and videos for AI training projects, including object recognition, scene classification, and action tracking. Tasks included applying bounding boxes, polygons, segmentation masks, and other annotations to ensure high-quality datasets. Evaluated AI predictions against labeled data to provide feedback and improve model accuracy. The project emphasized precision, consistency, and adherence to annotation guidelines across large volumes of multimedia content.

Reviewed and labeled images and videos for AI training projects, including object recognition, scene classification, and action tracking. Tasks included applying bounding boxes, polygons, segmentation masks, and other annotations to ensure high-quality datasets. Evaluated AI predictions against labeled data to provide feedback and improve model accuracy. The project emphasized precision, consistency, and adherence to annotation guidelines across large volumes of multimedia content.

2018

Education

M

Microsoft / Online Learning Platform

Certificate in AI Engineering, AI Engineering / Cloud

Certificate in AI Engineering
2025 - 2025

Work History

A

Appen and RWS and Prolific

AI data labeling Specialist (Contract)

Johannesburg
2018 - Present
V

VodaPay Financial Services

Technical Support Agent

Remote
2023 - Present