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Robert Siek
Data Analyst @Dentons
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WORK HISTORY
Data Analyst @Dentons
Warsaw, PL
Analyzed and validated financial and operational data across multiple enterprise systems. • Developed SQL-based validation and reconciliation checks to identify inconsistencies and anomalies. • Investigated data quality issues and supported issue triage with technical and business teams. • Prepared structured datasets used for financial reporting and downstream analytics. • Reconciled financial datasets including invoices, client data and settlements. • Supported data migration and validation processes ensuring data integrity across systems.
EDUCATION
Rathmines College
Fetac 5, English and Information Technology
National College of Ireland
Higher Diploma in Science in Data Analytics (NQF Level 8), Data Analytics
Rathmines College
Higher National Diploma, Business and Marketing
Technological University Dublin
Bachelor of Business (honours), Management
SKILLS
ABOUT ROBERT SIEK
Data Analyst with 8+ years of experience working with large, complex datasets across finance, media and FMCG industries. Specialized in data quality, data validation and analysis within multi-source environments, ensuring reliability and consistency of data used in reporting, analytics and operational processes. Strong hands-on experience with SQL, Python, ETL processes, and cloud-based data platforms (Azure, GCP, AWS). Experienced in working with large transactional datasets, supporting financial processes, data migrations and validation across systems. Comfortable collaborating with both technical teams (data engineers, analysts) and business stakeholders, translating data issues into clear insights and solutions. Key areas of expertise: • Data Analysis & Data Quality • SQL-based Data Validation • ETL & Data Pipeline Monitoring • Data Reconciliation & Anomaly Detection • Financial & Transactional Data • Cloud Platforms (Azure, GCP, AWS)
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