Erewa P.

Key Skills

Software

Appen

Labelbox

Scale AI

Top Subject Matter

Business Analytics – Data Cleaning, Transformation & KPI Reporting

Data Quality Assurance for AI-Ready Datasets (Validation & Labeling Support)

E-commerce & Text Data Processing (Categorization, Support & Evaluation)

Top Data Types

Text

Top Task Types

Data Collection

Evaluation/Rating

Question Answering

Text Summarization

Freelancer Overview

I have over three years of professional experience working in research, data preparation, and quality-focused workflows. As a Data Analyst at Blueorbit Insights from June 2021 to December 2022, I prepared and organized datasets to support analytics and decision-making projects. My core strengths include data cleaning, data evaluation, quality assurance, and attention to detail, which are essential for AI training and data annotation tasks. I hold a Bachelor of Science degree from Federal University of Petroleum Resources, earned in 2019. My experience with AI training includes working with text-based data and contributing to workflows such as data collection, evaluation, and rating. I am highly detail-oriented, reliable, and able to follow complex guidelines to deliver accurate, high-quality results.

Labeling Experience

Text Data Evaluation and Quality Assurance for AI Training

TextEvaluation/Rating

s a Data Analyst at Quantivis Analytics Ltd, I work with large datasets and perform data validation and quality checks to ensure accuracy and consistency. In AI training-related tasks, I evaluate text data, rate content quality, and apply detailed guidelines to assess relevance, clarity, and correctness. I also identify inconsistencies and ensure all outputs meet strict quality standards. This experience has strengthened my attention to detail and ability to deliver accurate, high-quality annotations on time.

2024 - Present

Data Analyst at Quantivis Analytics Ltd (Feb 2023 – Present) focusing on ETL, validation, and dashboarding.

OtherTextEvaluation/Rating

Worked as a Data Analyst performing data validation and quality checks for analytics reporting, contributing to reliable datasets for AI/data evaluation readiness. Built dashboards and developed ETL pipelines that prepare structured data outputs used for business insights and potential model training/evaluation. The role emphasized analytical quality control and transformation of large datasets. • Built Power BI and Tableau dashboards to reduce reporting time by 40%. • Developed ETL pipelines using SQL, dbt, and Matillion. • Performed data validation and quality checks for analytics reporting. • Identified trends improving conversion performance by 12%.

2023 - Present

Data Analyst at Blueorbit Insights (Jun 2021 – Dec 2022) with dataset preparation supporting analytics use cases.

OtherTextData Collection

Worked as a Data Analyst supporting analytics and operational reporting tasks that included preparing and cleaning datasets for downstream use. While not explicitly described as manual annotation, the work involved data validation and transformation steps commonly prerequisite to labeling and evaluation workflows. Responsibilities focused on preparing high-quality structured data for reporting and decision-making. • Cleaned and transformed datasets for operational reporting. • Created KPI dashboards for management reporting. • Supported data migration involving Snowflake and BigQuery. • Conducted data analysis to improve campaign ROI.

2021 - 2022

Education

Work History