Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Charles Dey—a Senior Data Analyst with 13+ years of experience turning complex data into decision-ready insights. I own business-critical metrics, dashboards, and reporting in data-rich environments. I deliver clear recommendations that drive revenue, efficiency, and improved customer outcomes. I excel in SQL-driven analysis, KPI definition, data validation, and turning ambiguous business questions into actionable recommendations. I partner with executives to boost revenue, reduce churn, and improve operational performance. I’m comfortable leveraging AI-assisted approaches to accelerate insight generation while maintaining accuracy and trust in the data.…Hi, I’m Charles Dey—a Senior Data Analyst with 13+ years of experience turning complex data into decision-ready insights. I own business-critical metrics, dashboards, and reporting in data-rich environments. I deliver clear recommendations that drive revenue, efficiency, and improved customer outcomes. I excel in SQL-driven analysis, KPI definition, data validation, and turning ambiguous business questions into actionable recommendations. I partner with executives to boost revenue, reduce churn, and improve operational performance. I’m comfortable leveraging AI-assisted approaches to accelerate insight generation while maintaining accuracy and trust in the data.

Charles Dey

Data Analyst, Data Scientist, Data Visualizer, +1





Hi, I’m Charles Dey—a Senior Data Analyst with 13+ years of experience turning complex data into decision-ready insights. I own business-critical metrics, dashboards, and reporting in data-rich environments. I deliver clear recommendations that drive revenue, efficiency, and improved customer outcomes. I excel in SQL-driven analysis, KPI definition, data validation, and turning ambiguous business questions into actionable recommendations. I partner with executives to boost revenue, reduce churn, and improve operational performance. I’m comfortable leveraging AI-assisted approaches to accelerate insight generation while maintaining accuracy and trust in the data.…Hi, I’m Charles Dey—a Senior Data Analyst with 13+ years of experience turning complex data into decision-ready insights. I own business-critical metrics, dashboards, and reporting in data-rich environments. I deliver clear recommendations that drive revenue, efficiency, and improved customer outcomes. I excel in SQL-driven analysis, KPI definition, data validation, and turning ambiguous business questions into actionable recommendations. I partner with executives to boost revenue, reduce churn, and improve operational performance. I’m comfortable leveraging AI-assisted approaches to accelerate insight generation while maintaining accuracy and trust in the data.

Available to hire

Hi, I’m Charles Dey—a Senior Data Analyst with 13+ years of experience turning complex data into decision-ready insights. I own business-critical metrics, dashboards, and reporting in data-rich environments. I deliver clear recommendations that drive revenue, efficiency, and improved customer outcomes.

I excel in SQL-driven analysis, KPI definition, data validation, and turning ambiguous business questions into actionable recommendations. I partner with executives to boost revenue, reduce churn, and improve operational performance. I’m comfortable leveraging AI-assisted approaches to accelerate insight generation while maintaining accuracy and trust in the data.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Management Information Systems (MIS) Specialist at Digicel PNG Limited

September 1, 2022 - October 31, 2025

Owned and maintained core business metrics and KPIs, ensuring a single source of truth and consistent definitions across the organisation. Developed and delivered executive and operational dashboards in Power BI, supporting revenue, customer behaviour, and operational performance analysis. Conducted deep-dive SQL analysis to identify trends, risks, and opportunities, providing actionable insights to senior leadership. Validated data across multiple source systems, improving accuracy and trust in reporting outputs. Translated ambiguous business questions into decision-ready analyses for executives and commercial teams. Applied AI tools to validate logic, explore insights, and accelerate data interrogation while maintaining accuracy. Led analytics process improvements, reducing manual reporting effort by 60% and enabling near real-time visibility into business performance.

Head, Business Control at Airtel Ghana Limited (AGL)

July 1, 2020 - August 1, 2022

Delivered analytical reporting and insights supporting financial performance, cost control, and operational risk management. Defined and monitored performance metrics used by executives to assess control effectiveness and regulatory compliance. Analyzed trends in operational data to identify improvement opportunities and prioritise corrective actions. Supported senior leadership with clear, data-backed reporting for Audit and Risk Committee decision-making. Partnered with cross-functional teams to improve the accuracy and usability of management reporting.

Risk and AML Manager at Airtel Ghana Limited, Accra

February 1, 2018 - June 1, 2020

Analyzed transaction, customer, and operational data to identify risk patterns, inefficiencies, and cost drivers. Developed and maintained performance dashboards used to monitor compliance, control maturity, and operational throughput. Partnered with business and technical teams to translate regulatory and operational requirements into measurable metrics. Led data-driven initiatives that improved compliance maturity and reduced operational exposure.

Senior Business Intelligence Analyst at Millicom Ghana Limited, Accra

January 1, 2016 - January 1, 2018

Owned revenue, usage, and customer KPIs, ensuring accuracy, consistency, and clarity across reports and dashboards. Built and maintained executive dashboards used to track commercial performance and guide strategic decisions. Conducted SQL-based analysis to identify revenue opportunities, churn drivers, and consumption trends. Translated business questions into analytical models and actionable insights for commercial and product leaders. Delivered predictive and tracking tools to monitor product performance before and after launch.

Business Intelligence Analyst at Millicom Ghana Limited, Accra

October 1, 2013 - December 1, 2015

Produced recurring and ad hoc analysis supporting management decision-making across sales, marketing, and finance. Designed KPI dashboards to monitor company-wide performance and highlight risks and opportunities. Developed customer segmentation and retention models that reduced churn from 13% to 4.5%. Improved data quality and reporting reliability by streamlining data flows and validation processes.

Peer Auditor (Part-time) at Millicom Ghana Limited, Accra

March 1, 2015 - July 1, 2017

Performed data-driven reviews of internal controls and operational processes. Conducted deep-dive analysis on deficient controls to support remediation and management decision-making.

Systems Engineer at Millicom Ghana Limited, Accra

September 1, 2012 - August 31, 2013

Supported financial and mobile money systems operations, ensuring high availability and data integrity. Performed system testing, UAT and production support for new products and system enhancements. Executed data backups, recovery testing, and continuity controls. Collaborated with bank partners and internal teams to resolve system issues.