Chibueze Obasi
Data Analytics and Engineering Professional
Professional Summary
Data Engineer with 5+ years of experience designing scalable distributed pipelines, automated orchestration, and resilient architecture across AWS and Azure environments. Proven track record of consolidating 15+ disparate data sources into dbt and Spark transformations, reducing weekly processing overhead from 40 hours to 10. Leverages AI-assisted code generation and automated testing workflows to accelerate pipeline deployment, optimize SQL/PySpark queries (+50% performance boost), and reduce downstream reporting errors by 85%.
Technical Skills
BI & Visualisation
Power BI (DAX, Power Query, incremental refresh, role-based security), Tableau, Looker Studio
SQL & Data Modelling
Advanced SQL, PostgreSQL, Snowflake, query optimisation, incremental loads, dimensional modelling, ETL/ELT concepts
Microsoft Ecosystem
Azure Synapse Analytics, Power Query, Excel (advanced), Power BI Service, Microsoft 365
Programming & Analytics
Python (Pandas, data wrangling, report automation, predictive modelling, A/B testing, statistical analysis)
Product & Performance Analytics
KPI framework design, metrics catalogue development, retention cohorts, CAC, LTV, funnel analysis, MRR tracking, Mixpanel
Governance & Collaboration
Reporting standards, data compliance, documentation, data quality monitoring, Agile (Scrum/Kanban), Jira, Confluence, Git
Professional Experience
Data Analyst
Kela Analytics
Remote
- •Analysed large datasets (2 TB+) to uncover trends, patterns, and actionable business opportunities, presenting findings directly to senior leadership through purpose-built executive summary dashboards.
- •Developed, maintained, and optimised a suite of 20+ real-time Power BI dashboards covering product performance, revenue metrics, and operational KPIs — used daily by 50+ stakeholders.
- •Performed rigorous data validation and quality checks; built a data-quality monitoring dashboard with real-time alerts, reducing dashboard errors by 85%.
- •Led end-user onboarding for 30+ business users; produced user guides and walkthrough videos that drove a 40% increase in self-service analytics adoption.
Data Analyst
Abia Tech Hub Limited
Umuahia, Nigeria
- •Consolidated data from 10+ siloed departmental systems into a single authoritative Power BI KPI dashboard that eliminated duplicated reports.
- •Rebuilt SQL query logic across core reporting pipelines, cutting average execution time from 8 to 4 minutes.
- •Applied incremental refresh and query-folding optimisations to Power BI models, reducing average report load time by 35%.
- •Established automated data-quality monitoring processes, achieving 98% accuracy across all dashboard outputs.
Power BI Developer Intern (Part-time)
ZoomCharts
Remote
- •Built and optimised 10+ client-facing Power BI dashboards using advanced DAX and time-intelligence functions.
- •Designed cross-functional KPI dashboards mapping sales, marketing, and operations metrics to shared business objectives.
- •Implemented drill-down visuals for multi-level data exploration, reducing stakeholder follow-up questions by an estimated 50%.
- •Maintained a bi-weekly dashboard maintenance cycle, resolving broken data connections and shipping new metrics on schedule.
Data Analyst
Street Waste Company Limited
Lagos, Nigeria
- •Automated recurring Excel and Power BI reports using Python and SQL scripts, cutting report generation time from 5 to 2 hours per cycle.
- •Built an operational Power BI dashboard for waste-collection management used by 25+ stakeholders.
- •Designed a geographic heat-map dashboard that helped operations managers reduce vehicle idle time by 20%.
- •Developed Python-based demand forecasting and statistical models, surfaced directly inside dashboards.
Education
Bachelor of Science in Statistics
Abia State University (ABSU), Uturu, Nigeria