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Chijioke Ubajaka

Bank Transaction Categorization Dataset Annotator and Quality Controller

NIGERIA flag
Lagos State, Nigeria
Intermediate

Key Skills

Software

No software listed

Top Subject Matter

Financial Transactions/Banking
Legal Services & Contract Review
Regulatory Compliance & Risk Analysis

Top Data Types

TextText
ImageImage
DocumentDocument

Top Task Types

Classification

Freelancer Overview

Bank Transaction Categorization Dataset Annotator and Quality Controller. Brings 10+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Amazon SageMaker. Education includes Bachelor of Science, N/A (2017). AI-training focus includes data types such as Text and labeling workflows including Classification.

Intermediate

Labeling Experience

Bank Transaction Categorization Dataset Annotator and Quality Controller

TextClassification
I annotated and quality-controlled bank transaction categorization datasets for use in financial text classification models. I established labelling guidelines and set inter-annotator agreement benchmarks to ensure consistent high-quality labeled data. My work directly impacted downstream machine learning models deployed to production environments. • Labeled text/tabular bank transaction data for supervised classification models. • Led dataset quality control initiatives ensuring accuracy and consistency. • Authored labeling guidelines implemented across the annotation team. • Automated feedback loops for continual data labeling improvement.

I annotated and quality-controlled bank transaction categorization datasets for use in financial text classification models. I established labelling guidelines and set inter-annotator agreement benchmarks to ensure consistent high-quality labeled data. My work directly impacted downstream machine learning models deployed to production environments. • Labeled text/tabular bank transaction data for supervised classification models. • Led dataset quality control initiatives ensuring accuracy and consistency. • Authored labeling guidelines implemented across the annotation team. • Automated feedback loops for continual data labeling improvement.

2023 - 2024

Education

N

N/A

Bachelor of Science, Electrical and Electronic Engineering

Bachelor of Science
2017 - 2017

Work History

B

Bluechip Technologies

Senior Data Scientist / ML Engineer

Lagos State
2024 - Present
U

Upwork

Freelance Machine Learning Engineer

N/A
2017 - Present