Master’s student in Big Data Analytics (SGGW Warsaw) with a background in finance, AML compliance, and payments investigation. Currently a Senior Payment Exceptions Officer (QA for junior officers), ensuring accuracy, compliance, and efficient resolution of complex cases. Good in Excel, working on SAS, and econometric/statistical methods; building deeper expertise in Python and machine learning through thesis work and coursework. Targeting roles in Data Analytics, Business Intelligence, Big Data, Applied Econometrics, or AI/ML research support.
Overview
4
4
years of professional experience
Work History
Senior Payment Exceptions Officer / QA Specialist
Planet – Global Payments & Software Company (retail, Hospitality, Financial Services).
07.2023 - Current
Key Responsibilities & Achievements:
Transaction Investigation and Resolution – Led in-depth investigations into rejected transactions across acquirers (AMEX, Barclays, Elavon, Fiserv, Planet). Identified root causes and implemented corrective actions to ensure accurate processing.
Process Optimization – Improved exception-handling workflows, reducing resolution times and cutting rejection rates by 65%.
Resubmission and Merchant Support – Coordinated corrected transaction resubmissions, ensured timely merchant payments, and maintained transparent communication.
Manual Adjustments – Oversaw DCC refunds, tax reversals, and credit/sale corrections when technical errors occurred.
Quality Assurance and Training – Acted as QA for junior officers, reviewing their casework for accuracy and compliance, giving feedback, and coaching to improve investigation standards.
Escalation Point – Managed complex or high-value cases, ensuring timely and compliant resolution.
Cross-functional Collaboration – Worked with acquirers, internal tech teams, and stakeholders to solve systemic transaction issues.
Reporting and Risk Mitigation – Produced structured reports on recurring issues, providing management with insights for efficiency and risk reduction.
Coaching Specialist
Square, Inc
02.2022 - 09.2025
Owned performance analytics & coaching for frontline agents, translating CSAT, QA, productivity/CPH and adherence trends into clear, actionable coaching plans.
Built Excel-based KPI trackers (pivot tables, weekly dashboards) to surface outliers, recurring issues, and improvement opportunities for team leads.
Delivered data-backed 1:1 and group coaching, turning metric movements into concrete behaviors, checklists, and follow-ups to reduce repeat errors and raise quality.
Produced executive-ready reports & presentations summarizing KPI shifts, root-cause themes, and recommended actions for management.
Closed feedback loops with cross-functional teams (e.g., Advanced Support, Payment Exceptions) by escalating systemic issues with concise evidence from ticket/call reviews.
Performed quality reviews of interactions, ensuring policy adherence and feeding findings into continuous training updates.
Tools and platforms: Excel, PowerPoint, Microsoft Teams, Looker, Coda, Salesforce, Zendesk.
AML Analyst C9
Citi Bank
08.2022 - 07.2023
Skilled in conducting investigations, fraud detection, and regulatory compliance auditing.
Deep understanding of AML regulations and extensive experience in sanctions screening, transaction monitoring, and regulatory reporting.
Strong expertise in compliance, risk assessment, due diligence, and financial crime detection.
Proven track record in customer due diligence (CDD) and enhanced due diligence (EDD) processes. Detail-oriented with strong financial intelligence analysis skills.
Employing a variety of internal and external tools and databases, assist with research and examination of potentially questionable clients through the use of pivot tables on excel.
The review/investigation results should be documented, reported, and case files with the necessary supporting documentation should be created revealing evidence on excel sheet.
Quickly learned new skills and applied them to daily tasks, improving efficiency and productivity.
Assist the AML team in drafting a clear and succinct summary of the investigation's findings.
Proficient in using AML software/tools (e.g., Citi Screening) and implementing compliance frameworks.
Carried out day-day-day duties accurately and efficiently.
Demonstrated respect, friendliness and willingness to help wherever needed, Worked flexible hours; night, weekend, and holiday shifts.
Inform top management of the next actions to be taken and make suggestions for the best course of action (retention of the relationship, termination, Suspicious Activity Report (SAR)).
help the AML team manage risks by examining the underlying causes of problems and their effects on the company.
Customer Service Representative
Square, Inc
09.2021 - 02.2022
Effective Communications skills both verbal and written, supporting a credit card processing company monitoring and analyzing transactions providing explanations to the merchants' transactions
Ability to clearly communicate technical problems in a short and concise manner
Skills in written (e-mail) communication and Focus on deadlines
When necessary, communicate and cooperate with coworkers.
Maintained customer satisfaction with forward-thinking strategies focused on addressing customer needs and resolving concerns.
Answered customer telephone calls promptly to avoid on-hold wait times.
Customer Service Representative
Cinema City Cinemas
06.2021 - 01.2022
Provided primary customer support to internal and external customers.
Provided information regarding charge accounts and loyalty programs.
Investigated and resolved customer inquiries and complaints quickly.
Responded proactively and positively to rapid change.
Education
Master of Science - MSc Big Data Analytics(Informatics & Econometrics)
Data Management:SQL (joins, aggregation, subqueries coursework), Oracle DB (coursework), SAS (Processing Massive Datasets, PROC SQL)
Analytics & ML: data cleaning/wrangling, feature engineering, logistic/linear regression, cross-validation, model evaluation (precision/recall), time series, panel data
Automation (exposure): AI agents (Microsoft Copilot, Youcom)
Languages
English, Shona
Native language
Polish
Elementary
A2
Additional Information
ACCORDING TO GDPR LAW
I agree to the processing of personal data provided in this document for realizing the recruitment process pursuant to the Personal Data Protection Act of 10 May 2018 (Journal of Laws 2018, item 1000) and in agreement with Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)
Timeline
Senior Payment Exceptions Officer / QA Specialist
Planet – Global Payments & Software Company (retail, Hospitality, Financial Services).
07.2023 - Current
AML Analyst C9
Citi Bank
08.2022 - 07.2023
Coaching Specialist
Square, Inc
02.2022 - 09.2025
Customer Service Representative
Square, Inc
09.2021 - 02.2022
Customer Service Representative
Cinema City Cinemas
06.2021 - 01.2022
Master of Science - MSc Big Data Analytics(Informatics & Econometrics)
Vice President of Marketing and Communications at TSYS, A Global Payments CompanyVice President of Marketing and Communications at TSYS, A Global Payments Company
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