Data Integrity-Focused Data Analyst & Entry Specialist

CHIDERA ONYEWUOTU

Data Analyst Business Intelligence Specialist Data Entry Specialist

****************@*****.*** +234 706-***-**** Lagos, Nigeria (Open to Remote) LinkedIn Profile

PROFESSIONAL SUMMARY

Results-driven Data Analyst with 3+ years of experience in high-accuracy data entry, master data governance, database management, and people data analytics across FMCG, fintech, and digital services. Proven ability to maintain data integrity at 99.50%+ quality scores while delivering actionable workforce insights that support HR decision-making and organisational planning. Skilled in analysing employee lifecycle data — including headcount, attrition, performance, and compensation trends — to surface patterns that drive people strategy. Adept at cleansing, validating, and updating large-scale datasets across enterprise systems including Ataccama, Collibra, Excel, and SQL, with exceptional attention to detail and a strong commitment to data privacy and compliance standards. Seeking a remote data or people analytics role where precision, reliability, and insight-driven thinking power organisational performance.

CORE COMPETENCIES

Data Analysis & Modelling BI Dashboard Design (Power BI, Tableau)

SQL & Databricks

Data Entry ETL Pipeline Development Advanced Excel (PivotTables, VLOOKUP)

Master Data Governance

(Ataccama, Collibra)

Data Quality & Governance Stakeholder Communication Financial & Sales Data Analysis KPI Monitoring & Reporting Process Improvement & Automation

PROFESSIONAL EXPERIENCE

Data Analyst / Data Quality & Governance Analyst Nigerian Breweries PLC (Heineken Group) Jan 2025 – Present

Enterprise FMCG Master Data Digital Backbone Programme

• Maintain data quality dimensions (integrity, consistency, uniqueness, accuracy, timeliness, completeness) across production, customer, and vendor master data using Ataccama and Collibra, sustaining Data Quality Dashboard scores at 99.50% or above across all operating companies.

• Design and execute SQL scripts in Databricks to build and manage data views in close collaboration with Data Engineering, reducing manual data retrieval time by an estimated 30%.

• Lead data standards unification across Heineken operating companies as part of the enterprise-wide Digital Backbone Programme, standardising master data for Supply Chain, Customers, and Vendors across multiple business units.

• Cleanse datasets using Excel and SQL to resolve anomalies and enforce governance policies, directly supporting upstream reporting accuracy for senior leadership. Data Analyst / Business Intelligence Analyst (Contract) 10Alytics Data & Strategy 2023 – 2024 Analytics Consultancy Multi-client BI Development Reporting Optimisation

• Architected and deployed Power BI dashboards and data infrastructure for multiple client engagements, enabling senior management to access real-time insights and improving organisational decision-making capabilities by 30%.

• Designed intuitive data visualisations (charts, graphs, trend analyses) that improved stakeholder communication clarity and effectiveness by 28%, reducing time-to-decision across client teams.

• Implemented and operationalised end-to-end ETL pipelines maintaining 100% data accuracy across all extraction, transformation, and loading workflows for the entire analytics department.

• Developed detailed business requirements documents by interrogating and manipulating client datasets, improving reported data accuracy by 25% across key performance areas.

• Deployed advanced analytics programmes that increased the timeliness and accuracy of business insights by 20%, enabling proactive decision-making.

Data Analyst / HR Executive Vivo Nigeria Mar 2022 – Jun 2023 Telecommunications Sales Performance Analytics BI Reporting HR analytics

• Developed and delivered regular BI dashboards and analytics reports using Power BI and Excel, translating complex sales performance data into action-oriented insights for regional stakeholders.

• Created Excel-based pivot table analyses for the regional sales team, improving visibility of sales trends and driving a measurable improvement in sales performance monitoring.

• Collaborated with Product, Finance, and Marketing teams to gather data requirements and deliver cross-functional insights that directly informed strategic decisions.

• Designed and maintained a stock report and sub-dealer database system, enhancing inventory visibility and reducing reporting gaps across distribution channels.

• Develop custom dashboards within Azure by integrating data from multiple sources and locations.

• Implement row-level security (RLS) across all solutions to uphold data privacy regulations and policies.

• Leverage DAX to enhance dashboard customization and tailor outputs to specific user requirements. Digital Product Sales Executive (Data Entry) First Bank Nigeria Ltd (via Kimberly Ryan) Mar 2019 – May 2021

Banking & Financial Services Digital Product Adoption Customer Analytics

• Leveraged Excel and pivot table analysis to identify dormant customer accounts, enabling a targeted reactivation campaign that returned disengaged customers to active status.

• Grew the branch's agent banking client base from a low baseline to over 150 active customers, representing significant digital product adoption through data-driven targeting.

• Maintained and continuously enriched the customer database to support sales reporting and customer engagement tracking.

KEY QUANTIFIED ACHIEVEMENTS

• Sustained enterprise Data Quality Dashboard scores at 99.50%+ across all Heineken operating company datasets, ensuring zero material data quality failures in reporting cycles.

• Improved stakeholder communication effectiveness by 28% through structured data visualisation programmes, as measured by client feedback and reduced query resolution times.

• Achieved a 30% improvement in organisational decision-making capability by designing and deploying scalable Power BI dashboards for multi-client engagements.

• Increased data accuracy by 25% through rigorous business requirements analysis and data validation frameworks implemented across client accounts.

• Delivered a 21% increase in client sales performance by developing data flow improvements and market analysis frameworks with actionable KPI monitoring.

• Reduced data error rates by 55% and increased user engagement by 30% through advanced Excel data cleaning and database restructuring initiatives.

• Grew digital banking client portfolio by 500%+ (to 150+ customers) through data-driven customer segmentation and targeted outreach strategies.

FEATURED DATA PROJECTS

Hotel Booking Analytics Dashboard (5-Star Hotel)

Built a comprehensive Excel analytics dashboard using advanced functions (VLOOKUP, Index-Match, SUMIF, COUNTIF, Pivot Tables, Slicers, Timelines) to analyse hotel booking data across market segments, distribution channels, and seasonal patterns. Delivered actionable profitability and viability insights to senior decision-makers. Customer Sales Database Analysis (8-Year Dataset: 2014-2022) Designed and executed SQL scripts to upload, create, join, filter, and aggregate a multi-year enterprise customer database. Delivered comprehensive analysis of sales performance, variances, and profitability trends to senior management, supporting strategic planning and resource allocation decisions. E-Commerce Profitability & Customer Intelligence Report Cleaned, analysed, and visualised e-commerce data using MS Excel and Power BI to produce branch profitability reports, customer demography analyses, sales performance dashboards, and customer profitability reports. Outputs directly supported management investment and marketing decisions.

EDUCATION

BSc Accounting Paul University, Awka 2015

CERTIFICATIONS & PROFESSIONAL DEVELOPMENT

• Masters of Data Analytics & Visualisation (MDA) – 10Alytics (Aug 2022)

• Google Advanced Data Analytics Professional Certificate – In Progress

• DataCamp Data Analytics Certification

• Data Engineering and AI Engineering – In progress

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