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Data Visualization & Analytics Specialist

Location:
Newark, DE
Posted:
December 15, 2025

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Resume:

Opeyemi Osun

************@*****.*** 302-***-**** New Jersey

SKILLS

Tableau, Power BI (Data Visualization)

Excel (Pivot Tables, XLOOKUPs, Macros)

Data Analysis (DAX, Data Cleaning)

SAP, Salesforce, Microsoft Access, Microsoft Dynamics WORK EXPERIENCE

Acro Service Corporation September 2024 - Current

Reporting Analyst New Castle DE

Tableau Dashboard Development & Maintenance: Created, updated, and optimized interactive dashboards and visualizations.

Automated weekly and monthly Excel reports, reducing manual work by 30% using advanced formulas.

Analytical Problem-Solving: Identified data issues, diagnosed root causes, and developed effective solutions

Report Migration & Enhancement: Migrated legacy Excel reports into Tableau, improving accuracy and reducing review time.

Advanced Excel Reporting: Designed and delivered detailed reports featuring complex formulas, lookups, and data validation for operational and financial needs. TA Instruments September 2021 – December 2023

Data Analyst New Castle, DE

Performed ad-hoc analysis for the global service department using advanced Excel (XLOOKUP, DAX).

Improved data integrity between SAP and Microsoft Dynamics, reducing mismatches by over 70%.

Supported cross-department data resolution by retrieving missing SAP/Dynamics data.

Created monthly training documentation for SAP and Dynamics procedures

Cleaned and prepared data sources for Power BI reporting.

Performed analysis of data from different countries to determine areas of improvement Dart Container July 2020 - July 2021

Data Production Analyst Federalsburg, Maryland

Used Excel to create and update visualizations to help the team see how many products each machine made. This increased the productivity of the entire department.

Performed data cleaning, analysis, and created visualizations, then distributed findings to branch managers

Created a Microsoft Access database for incidents and injuries for each worker

Used Power BI visualizations to keep departments up to date and help with risk management

Performed ad-hoc analysis for any department that needed it. Gathered information from each department and used visualizations to improve plant efficiency

Delaware Limo Taxi January 2019 - March 2020

Intern Analyst Federalsburg, Maryland

• Managed finances, recorded purchases, expenses, and costs using QuickBooks and Excel Impact Services June 2018 – July 2018

Intern Philadelphia, PA

• Assisted in database management and grant acquisition for a non-profit organization

• Researched and gathered data for implementation of relational database EDUCATION

University of Delaware July 2019

Bachelor of Arts. In Economics Newark, DE

Springboard May 2024 - August 2024

Analyst Fellow Remote

Analyze volunteer data sets and create reports and visualizations using Excel Power BI and SQL.



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