Martins Obaseki
Data Analyst
Manchester, GB.About
Highly analytical and results-driven Data Analyst with 3+ years of experience transforming complex data into actionable insights for strategic decision-making across financial services, healthcare, and digital platforms. Expert in data wrangling, reporting automation, and dashboard development using SQL, Power BI, Excel, and Python. Proven ability to leverage advanced analytics, statistical modeling, and data governance principles to drive process optimization and achieve measurable business outcomes.
Work
Freelance Data Analyst & Portfolio Projects
|Freelance Data Analyst
Remote, England, United Kingdom of Great Britain and Northern Ireland
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Summary
Led independent data analysis projects, developing interactive dashboards and applying advanced data transformation techniques to deliver actionable insights and support strategic decision-making for diverse clients.
Highlights
Designed and developed interactive Power BI dashboards by integrating diverse multi-source datasets, enhancing insights for road safety analysis, student mental health, and e-commerce performance.
Applied advanced data transformation techniques, including unpivoting, merging, schema mapping, and Z-score calculations via Power Query, to optimize data readiness for analysis.
Constructed optimized star and snowflake data models, significantly improving dashboard performance and accelerating business insights delivery.
Executed comprehensive exploratory data analysis and statistical modeling to identify critical trends, correlations, and outliers, informing strategic decision-making.
Communicated complex data insights and visual stories effectively to non-technical stakeholders, directly supporting operational and strategic decision-making.
Polaris Bank Ltd
|Data Analyst
Lagos, Lagos, Nigeria
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Summary
Provided critical data analysis and reporting for a leading financial institution, ensuring regulatory compliance and enhancing operational efficiency through comprehensive BI solutions.
Highlights
Delivered critical operational and compliance reports by extracting and analyzing large datasets from SQL databases and core banking systems, ensuring data integrity for regulatory audits.
Designed and maintained automated dashboards and reports, enhancing KPI monitoring and improving service turnaround times to support regulatory compliance.
Collaborated cross-functionally with multiple departments to gather business requirements, define reporting needs, and deliver tailored BI solutions, enhancing data-driven strategies.
Executed comprehensive data validation, cleansing, and anomaly resolution processes, ensuring the accuracy and reliability of all reporting outputs.
Provided ongoing internal data consultancy, translating complex analyses into actionable insights that informed leadership decisions and business strategies.
Polaris Bank Ltd
|Control Officer
Lagos, Lagos, Nigeria
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Summary
Managed financial transaction oversight and compliance, identifying anomalies and mitigating risks through detailed analysis and reporting to safeguard institutional integrity.
Highlights
Conducted daily review and analysis of financial transactions, identifying anomalies, compliance breaches, and operational risks through SQL-based data extraction.
Led investigations into suspicious activities and transaction inconsistencies, producing actionable reports that supported internal audit, compliance, and fraud prevention teams.
Collaborated with IT and risk management teams to ensure data integrity, consistency, and adherence to internal control frameworks and regulatory standards, enhancing risk posture.
Prepared detailed trend and variance analyses on high-risk accounts, driving improvements in internal control processes and enhancing early detection of irregular activities.
Delivered data-driven insights to senior management, supporting strategic decisions on operational risk management and policy development.
Education
University of Hull
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MSc
Artificial Intelligence & Data Science
Courses
Data Analytics
Machine Learning
Python Programming
Big Data
Applied AI
Data Governance
University of Port Harcourt
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BEng
Petroleum Engineering
Languages
English
Certificates
GDPR & Data Protection
Issued By
Making Space (NHS equivalent standards)
Data Analyst in SQL
Issued By
DataCamp
Data Analyst in Power BI
Issued By
DataCamp
Associate Data Engineer in SQL
Issued By
DataCamp
Skills
Data Analytics & Visualisation
Power BI, Tableau, Excel, Advanced Formulas, Power Query, VBA.
Database Querying & ETL
SQL, PostgreSQL, SQL Server, Snowflake, SSIS, Data Modelling, Star Schema, Snowflake Schema.
Programming & Analysis
Python, Pandas, NumPy, Scikit-learn, Seaborn, Matplotlib, R (Basic).
Data Management & Governance
Data Cleansing, Data Quality, GDPR Compliance, Data Validation, UAT.
Business Intelligence & Reporting
KPI Dashboards, Performance Monitoring, Operational Reporting.
Soft Skills
Stakeholder Engagement, Data Storytelling, Cross-Functional Collaboration, Process Optimisation, Documentation, Training.
Cloud Platforms
AWS, Snowflake.