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Harold Ngo

Harold Ngo

QA Engineer with 9+ years of experience

France flagParis, France
$25.00/hrEntry LevelLabelboxLabel Studio

Key Skills

Software

LabelboxLabelbox
Label StudioLabel Studio

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText

Top Task Types

Audio Recording
Classification
Evaluation Rating
Function Calling
Prompt Response Writing SFT

Freelancer Overview

I specialize in high-quality data labeling and AI training data services, helping companies build accurate, reliable, and scalable machine learning models. With experience across image, text, audio, and video annotation, I deliver precise datasets that power computer vision, NLP, and speech recognition systems. My expertise includes bounding boxes, semantic segmentation, entity recognition, transcription, and quality assurance, ensuring each dataset meets the strictest accuracy and consistency standards. What sets me apart is a focus on data precision, workflow efficiency, and client collaboration. I’ve managed projects for industries such as fintech and e-commerce, using tools like Label Studio, labelbox. Whether you need a small pilot batch or a large-scale labeling operation, I bring a results driven approach; combining technical skill, clear communication, and quality control systems to accelerate your AI development pipeline.

Entry LevelFrenchEnglishSpanish

Labeling Experience

Label Studio

Autonomous Vehicle Image Labeling for Object Detection

Label StudioImageBounding BoxPolygon
In this project, I annotation street-level images captured from multiple camera sensors used in autonomous vehicle development. The task involved accurately labeling vehicles, pedestrians, traffic lights, road signs, and lane markings with bounding boxes and polygonal segmentation to train an object detection model.

In this project, I annotation street-level images captured from multiple camera sensors used in autonomous vehicle development. The task involved accurately labeling vehicles, pedestrians, traffic lights, road signs, and lane markings with bounding boxes and polygonal segmentation to train an object detection model.

2025 - 2025

Education

U

University of Surrey

Bachelor of Engineering, Electronics And Satellite Engineering

Bachelor of Engineering
2013 - 2016
C

City and Islington College

A-Level, Mathematics, Physics and Electronics

A-Level
2011 - 2013

Work History

S

Swissquote Bank

Mobile QA

Gland
2023 - Present
K

Klarna Bank AB

Senior QA Engineer

Remote
2022 - 2023