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Pao Castrejon

@paocastrejon

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Strategic Data Scientist driving operational KPIs and cost reduction.

Mexico

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What I'm looking for

I seek a data-driven role where I can apply Python and Power BI to optimize operations and supply chains, drive measurable KPI improvements, and work within collaborative teams focused on continuous process improvement.

I am a Strategic Data Scientist with a Master’s degree and over 10 years of experience optimizing business processes and supply chains through data-driven solutions.

I specialize in transforming operational data into predictive KPIs and dashboards using Python and Power BI, with a track record of delivering up to 90% cost reductions and 60% improvements in customer satisfaction.

My background includes roles in Tier-1 global companies where I led operations, supply chain coordination, and quality system re-engineering using Six Sigma and ISO 9001 frameworks, consistently achieving high KPI compliance and process improvements.

I contribute independent data projects and hackathon work focused on predictive modeling and inventory optimization, and I bring a collaborative, results-oriented approach to drive measurable business impact.

Experience

Work history, roles, and key accomplishments

Current

Independent Data Scientist

Current

GitHub Portfolio

Jan 2024 - Present (2 years 8 months)

Developed predictive models and statistical analyses for inventory optimization and personal finance; led AI-driven hackathon projects for SMEs resulting in prototype solutions.

Python predictive modeling Statistical Analysis Machine Learning GitHub Hackathon Experience Data Visualization Power BI

Data Analyst

Conduent

Mar 2023 - Jul 2025 (2 years 4 months)

Analyzed dentist affiliation data for a MetLife project to identify behavior patterns and predict service demand; developed efficiency and quality KPIs and ensured dataset integrity for strategic reports.

Python Pandas Data Cleaning KPIs predictive modeling Power BI EDA

Operations Supervisor

DHL Express

Managed operational performance indicators to achieve a 98% on-time delivery rate and reduced customer complaints by 60% through quality and process improvements.

Operations Management Performance Metrics SLA Management Lean Process Improvement

Export & Supply Chain Coordinator

Norma Group

Coordinated international logistics and data flow for clients including Ford and Honeywell, maintaining 98% KPI compliance through process monitoring and optimization.

Supply Chain Management Logistics Coordination KPIs Data Analysis Excel Process Optimization Stakeholder Management

Operations Supervisor

FEMSA Logística

Managed quality systems and KPIs for product verification teams, driving improvements in verification accuracy and operational compliance.

Quality Management KPI Tracking Process Control ISO Standards Team Leadership Data Analysis

Process Engineer & Quality Coordinator

Larrabezua Grupo Empresarial

Led re-engineering of the Quality Management System (ISO 9001) and implemented cost-reduction projects using operational data analysis to improve efficiency.

Quality Management ISO 9001 Six Sigma Data Analysis Continuous Improvement