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david_umanah

David Umanah

@david_umanah

Excel, Power Query, Power BI Data Analyst

Nigeria
English
About me
Hi, I'm David, a Data Analyst skilled in Excel, Power Query, and Power BI. I help businesses and individuals organize their data, automate repetitive tasks, and turn raw information into clear, useful reports. My services include: Excel data cleaning, formatting, simple formulas, and conditional formatting. Power Query data cleaning, transformation, and report automation. Power BI dashboard design and optimization. I'm happy to help fixing an Excel file, cleaning a dataset, automating a report, and improving your Power BI dashboard. Let's make your data work better for you.... Read more

Skills

d
david_umanah
David Umanah
Offline • 
Average response time: 1 hour

See my services

Data Cleaning
I will clean, format and organize your excel data
From$15 / projectMore details
Data Cleaning
I will automate your excel data using power query
From$15 / projectMore details

Portfolio

Work experience

IHS_Towers

Data Analyst

IHS Towers

Dec 2023 - Present • 2 yrs 10 mos

* Analyze operational and energy data across 3,000+ telecom sites to identify trends, gaps, and improvement opportunities. * Develop and maintain Excel, Power Query, and Power BI reports for site performance, grid availability, token usage, and energy consumption. * Clean, transform, reconcile, and automate operational datasets to improve data accuracy and reporting efficiency. * Develop data-driven models and trackers, including a token forecasting model with ~95% prediction accuracy. * Analyze maintenance and vendor performance data to identify recurring issues and support a 60% reduction in grid fault resolution time. * Provide actionable insights and performance reports to support management decision-making and operational planning.