Dennis A.

Key Skills

Software

Other

Data Annotation Tech

Top Subject Matter

Business intelligence dashboards and customer analytics

Financial transaction monitoring and customer behavior analytics

Business intelligence support and exploratory data analysis

Top Data Types

Document

Computer Code Programming

Image

Top Task Types

Data Collection

Freelancer Overview

Data Analyst — Andela (2023–2025). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, University of Lagos (2020). AI-training focus includes data types such as Document and labeling workflows including Data Collection.

Labeling Experience

Data Analyst — Andela (2023–2025)

OtherDocumentData Collection

Created and maintained interactive Power BI dashboards to visualize operational and customer analytics datasets. Performed data cleaning and transformation so datasets were suitable for KPI tracking and reporting outputs. Supported business intelligence deliverables used by stakeholders for decision-making. • Built Power BI dashboards for operational performance monitoring. • Analyzed customer datasets to identify business trends and growth opportunities. • Automated reporting workflows using SQL and Excel to reduce reporting time. • Collaborated cross-functionally to turn findings into actionable insights.

2023 - 2025

Junior Data Analyst — Interswitch (2020–2023)

OtherDocumentData Collection

Produced KPI dashboards and reports for monitoring financial transactions and improving data accuracy. Cleaned and transformed raw transactional data using SQL and Python for downstream analysis and reporting. Assisted with predictive analysis and customer behavior studies to support customer-focused decision processes. • Developed KPI reports and dashboards for transaction monitoring. • Cleaned and transformed raw transactional data using SQL and Python. • Assisted in predictive analysis and customer behavior studies. • Applied reporting validation procedures to improve data accuracy.

2020 - 2023

Data Analytics Intern — KPMG (2018–2020)

OtherDocumentData Collection

Supported business intelligence teams by preparing data and producing exploratory analysis outputs for stakeholders. Conducted exploratory data analysis on business performance datasets and created Excel dashboards for monthly reporting. Generated stakeholder reports based on prepared datasets to communicate performance trends. • Supported data preparation and visualization for BI teams. • Performed exploratory data analysis on business performance datasets. • Generated reports for stakeholders and management. • Created Excel dashboards for monthly reporting.

2018 - 2020

Education

Work History