David Zolkiewicz
Business System Analyst
Arlington Heights,United States
Summary
Business analyst with extensive experience in conducting thorough analysis and research to develop effective solutions for business challenges. Expertise in formulating strategies for business improvement and managing technology and system implementations. Skilled in utilizing business intelligence tools such as SQL, Excel, Alteryx, and Power BI to convert complex datasets into actionable insights.
Overview
17
17
years of professional experience
1
1
Certification
Work History
Business System Analyst
Alight Solutions
Deerfield, United States
07.2008 - 06.2025
- Conducted business analysis to define requirements and derive actionable insights from complex datasets.
- Formulated Power BI dashboards, reducing processing time by 70% for improved data visibility.
- Revised client requirements documentation, decreasing manual work by 60% and prioritizing high-value tasks.
- Designed validation frameworks that identified 23 of 24 pricing errors before Annual Enrollment, minimizing financial risks.
- Corrected over $100k accounting gap by streamlining ETL workflows, addressing three critical payroll data exchange errors.
- Executed comprehensive test planning, enhancing software precision and resolving over 95% of issues pre-enrollment.
- Managed over 20 data projects in four years, ensuring alignment with business requirements and timely delivery.
- Implemented quality assurance processes to maintain data integrity, eliminating all potential errors in manual updates.
Education
Master's Degree - Engineering
Cracow University of Technology
Cracow, Poland09.2006
Skills
- Requirements definition
- Client collaboration and stakeholder engagement
- Technology implementation
- Business analysis
- Requirements documentation and gathering
- Systems analysis and design
- Stakeholder relations
- Software development life cycle
- Project coordination using Jira
- SQL and data analysis
- Excel and Alteryx
- Data visualization with Power BI
- Business reporting and report generation
- ETL processes
- Quality assurance and testing
- Problem solving
- Process improvement and debugging
- Teamwork and mentoring
- Analytical thinking and communication skills
- Root-cause analysis
Projects
Payroll Verification
Data Analyst, 01/2025 - 06/2025
Built workflows for in-depth analysis and verification of paycheck deductions for a client with 100,000 employees, which secured accuracy and compliance.
-
Automatic Dependent Verification
Lead Analyst, 01/2024 - 12/2024
Implemented automated workflows for dependent verification, reducing manual work by 40 hours per week and minimizing errors by 90%.
-
Transfer work to partner
Educator, 01/2023 - 08/2023
Prepared user-oriented documentation to support work transition to an offshore partner, facilitating seamless knowledge transfer.
Certification
SQL for Data Analysis: Advanced SQL Querying Techniques,
Udemy,
2025, UC-c587b027-a16e-44ad-b565-3034ace90b5
Websites
Languages
Polish
Native/ Bilingual
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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Timeline
Business System Analyst
Alight Solutions
07.2008 - 06.2025
Master's Degree - Engineering
Cracow University of Technology
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