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I
Ikechukwu Udum

Ikechukwu Udum

Data Annotator

Nigeria flagLagos, Nigeria
$6.00/hrIntermediateOtherTolokaMercor

Key Skills

Software

Other
TolokaToloka
MercorMercor

Top Subject Matter

Retail trading sentiment analysis
Coding
Ai Development

Top Data Types

TextText
ImageImage
VideoVideo

Top Task Types

ClassificationClassification
SegmentationSegmentation
Text GenerationText Generation
Computer Programming/CodingComputer Programming/Coding
TranscriptionTranscription

Freelancer Overview

I have hands-on experience working with AI training data and data labeling, where I focus on producing high-quality, consistent annotations that directly improve model performance. My work involves preparing and cleaning datasets, applying structured labeling techniques, and ensuring accuracy across large volumes of data. I’m comfortable working with text-based datasets, including sentiment analysis tasks, where I preprocess data using tools like spaCy and help transform raw inputs into meaningful training signals for machine learning models. What sets me apart is my combination of technical understanding and practical execution. I’ve worked on projects involving sentiment analysis using Python and TensorFlow, which gives me deeper insight into how labeled data impacts model outcomes—not just the labeling process itself. With a strong attention to detail, the ability to follow complex annotation guidelines, and a solid foundation in machine learning workflows, I bring both precision and context awareness to AI training data tasks.

IntermediateEnglish

Labeling Experience

Data Analysis & Machine Learning — Sentiment Analysis System

OtherTextClassification
Developed and implemented a sentiment analysis system for classifying social media text data regarding campus retail trading. Managed preprocessing, labeling, and analysis of textual datasets to support machine learning models. Documented the machine learning pipeline and presented model evaluation for academic purposes. • Used Python with spaCy and scikit-learn for text processing and sentiment analysis. • Labeled text data with sentiment categories for model training and evaluation. • Ensured data quality by conducting validation and error-checking of labeled samples. • Contributed findings to the academic assessment of the system.

Developed and implemented a sentiment analysis system for classifying social media text data regarding campus retail trading. Managed preprocessing, labeling, and analysis of textual datasets to support machine learning models. Documented the machine learning pipeline and presented model evaluation for academic purposes. • Used Python with spaCy and scikit-learn for text processing and sentiment analysis. • Labeled text data with sentiment categories for model training and evaluation. • Ensured data quality by conducting validation and error-checking of labeled samples. • Contributed findings to the academic assessment of the system.

2024 - 2025

Education

U

University of Nigeria, Nsukka

Bachelor of Science, Physics and Astronomy

Bachelor of Science
2019 - 2025
O

Omole Senior Grammar School

West African Senior School Certificate, General Secondary Education

West African Senior School Certificate
2014 - 2017

Work History

F

Freelance

Website Developer

Lagos
2024 - Present
N

N/A

Graphic Designer and Video Editor

Lagos
2023 - Present