Detail-Oriented Data Coordinator with SQL & Excel Expertise

ASITONKA ACHESE

Port Harcourt, Nigeria ********.******@*****.*** +234**********

www.linkedin.com/in/asitonkaachese

SUMMARY

Detail-oriented Data Coordinator with experience in data entry, data validation, and record management. Skilled in organizing datasets, maintaining high accuracy, and supporting reporting processes using Excel, SQL, and Power BI. Proven ability to streamline data workflows, improve data quality, and support business decisions through structured data management. CORE SKILLS

Data Entry & Data Validation • Data Cleaning • Data Management • Data Collection • Data Reporting • Spreadsheet Analysis • Record Management • Data Accuracy & Quality Control • Attention to Detail • Time Management • Microsoft Excel (PivotTables, VLOOKUP, formulas) • Google Workspace • SQL • Power BI (Basic) • Zoom • Slack

EXPERIENCE

Data Coordinator

PCM Global, Port Harcourt

Apr 2022 – March 2026

Collected, verified, and entered large volumes of data into spreadsheets and internal systems with high accuracy.

Maintained structured digital records, improving data accessibility and reducing onboarding time by 50%.

Cleaned and organized datasets using Excel functions, ensuring consistency and data integrity.

Generated weekly reports using Excel (PivotTables, formulas) to support operational decision- making.

Automated repetitive data entry tasks, reducing manual workload and errors by 60%.

Performed data validation checks to ensure accuracy and completeness of records. Data Assistant (Freelance)

Lagos, Nigeria

Nov 2020 – Apr 2022

Managed data entry tasks and maintained organized datasets for multiple clients.

Cleaned and structured data in Google Sheets for tracking and reporting purposes.

Created simple automated reports to improve data visibility and decision-making.

Ensured data accuracy through validation and regular updates. Operations Intern (Data Support)

Tegasi Enterprises, Port Harcourt

Apr 2016 – Apr 2017

Collected and cleaned operational data for reporting

Maintained filing systems (digital and physical)

Supported documentation and basic data validation tasks DATA PROJECTS

Data Cleaning & Validation (Excel): Cleaned datasets, handled missing values, and applied validation rules, Built PivotTables to summarize and analyze data SQL Data Project: Structured datasets and performed queries for data validation and extraction Power BI Dashboard: Created interactive dashboards to visualize trends and insights EDUCATION

BSc. Microbiology — University of Port Harcourt

CERTIFICATIONS

Data Analytics — ALX Africa

Professional Foundations — ALX Africa

AI Career Essentials — ALX Africa

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