Piotr Wislowski

Financial Analyst, Freelance

Me in 10 seconds

Passed all three CFA levels with a quantitative background (MSc Business Statistics) and 3+ years building financial models and analytical systems in complex multinational environments.

I combine investment-grade financial analysis with hands-on Python engineering — having deployed production systems that reduced manual processing time by 95%+ and saved six-figure costs annually across global corporate structures.

Currently targeting roles in investment analysis, quantitative research, or credit where analytical rigour and technical depth create genuine edge.

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Work Experience

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Jul 2025 - Current

Lonza

Senior Transfer Pricing Analyst
Promoted to Senior Transfer Pricing Analyst, where I spearheaded the design of tax segmentation and shared services business frameworks. These initiatives streamlined global operations by enhancing financial modeling accuracy, scalability, and audit transparency across corporate tax functions.

Key Achievements
- Designed comprehensive tax segmentation frameworks that allocate profits and costs across entities using rule-based logic, reducing manual reconciliation efforts by 80% and improving operational efficiency.
- Developed shared services allocation models with policy-aligned weighting mechanisms, enabling precise cost distribution and compliance reporting in minutes rather than weeks (95% time savings).
- Integrated legacy transfer pricing tools (cost-plus, global services) into a unified segmented P&L system via Python modules and Power BI, providing scalable analytics for service and manufacturing pipelines with 100% entity onboarding automation.
- Extended financial modeling capabilities to handle complex entity onboarding and economic activity breakdowns, minimizing errors by 99% and supporting strategic tax planning.
Jul 2023 - Jun 2025

Lonza

Transfer Pricing Analyst
As Transfer Pricing Analyst, I automated critical financial and compliance processes through advanced modeling and data tools, replacing error-prone manual workflows with scalable solutions that accelerated month-end closings and ensured robust tax adherence.

Key Achievements
- Built a cost-of-shared-services allocation model that automates cost weighting and reporting, slashing two weeks of manual work to minutes (95%+ time reduction) while eliminating human errors.
- Engineered a fully integrated month-end closing automation, saving ~£40,000 annually (one FTE equivalent), compressing multi-team processes from hours to 5 minutes (99% time savings), and enabling seamless scalability.
- Created Power BI and VBA-driven cost-plus and intercompany invoice compliance checkers for 10,000+ monthly invoices, achieving 100% policy alignment coverage and reducing compliance risks.
- Automated quarterly pricing cycles with Python/Go processors for 10,000+ prices, including SAP formatting, mark-up adjustments, and load preparation – cutting processing time by 90% and error rates to near zero.
- Delivered dynamic P&L dashboards and intercompany transaction classifiers using Power BI and SAP BW data, streamlining global tax audits by 70% and enhancing operational reporting accuracy.