
Claudia Chajon
Data Scientist
Experience
Data Analyst
UBS - remote - January 2023 to Present
Optimized Organization-Wide Reporting:
- Owned end-to-end analytics and reporting pipelines supporting high-risk Restrictions & Exits workflows, where data accuracy directly impacts client transaction eligibility.
- Identified and resolved data quality issues, edge cases, and logic gaps, improving dashboard reliability and auditability in regulated reporting environments.
- Increased team efficiency by introducing standardized documentation, reusable templates, and peer SQL reviews, improving handoffs and reducing rework.
Regulatory Compliance and Reporting Leadership:
- Designed, validated, and maintained complex business logic for account restriction and unrestriction populations in partnership with stakeholders, ensuring regulatory and operational compliance.
- Automated a previously manual monthly reconciliation process by developing a Python-based ingestion and reconciliation workflow, reducing processing time from ~1 month to <3 hours (>95% time reduction) and significantly lowering operational risk.
- Translated ambiguous business requirements into clear technical specifications, accelerating delivery timelines by ~20% across multiple R&E initiatives.
Stakeholder Engagement and Strategic Alignment:
- Proactively engaged with stakeholders to understand and prioritize business needs, aligning data gathering and modeling strategies with organizational goals.
- Recognized through multiple strong peer and stakeholder feedbacks for ownership, reliability, and business impact.
Data Scientist
Vermeer - remote - Feb 2021 to December 2022
Data Collection and Analysis:
- Managed the collection, analysis, and processing of intricate datasets using advanced query, visualization, and analytical tools.
Python and Machine Learning Expertise:
- Utilized Python, PyTorch, and OpenCV within a Unity environment, contributing to the enhancement and maintenance of machine learning models for satellite imagery analysis.
Innovative Computer Vision Algorithms:
- Improved autonomous system accuracy by 25% through building and evaluating machine learning and deep learning models using Python, PyTorch, and OpenCV.
- Conducted experiments to develop novel computer vision algorithms, specifically for autonomous UAV navigation in GPS-denied environments.
Stakeholder Engagement:
- Fostered relationships with project stakeholders by providing valuable input in 94 weekly product reports, ensuring alignment with project goals.
Data and Policy Analyst
Pie for Providers - remote - Oct 2021 to Jan 2022 (4 month contract)
Collaborative SQL Architecture Development:
- Collaborated with software engineers to design and build the SQL architecture necessary for establishing a comprehensive data warehouse for the product.
Critical Evaluation of Information:
- Conducted rigorous evaluations of information collected from various sources, ensuring accuracy and reliability for preliminary reviews.
Expertise in Child Care Financial Assistance:
- Demonstrated a deep understanding of current issues and trends in child care financial assistance, specializing in 20 US states.
Freelance Data Scientist
remote - Oct 2020 to Present
Created Efficient and Creative Data Visualizations:
- Developed visually compelling and informative data visualizations, optimizing data communication and facilitating better decision-making.
Data Collection and Formatting:
- Employed SQL, Python (Pandas, NumPy), Jupyter Notebooks, and GitHub to proficiently collect, clean, and format large datasets, ensuring data integrity and accessibility.
Client Collaboration:
- Collaborated closely with clients to gain a comprehensive understanding of their data pain points, enabling tailored solutions and effective problem-solving.
Education
Bloomtech Institute of Technology - (fka Lambda School) - 2019-2020 - Badge of Completion
Mastery-Based Full-Stack Data Science Curriculum:
- Completed a rigorous 9-month, 2000+ hour full-stack data science curriculum, focusing on mastery-based learning.
Demonstrated Mastery in Core Areas:
- Exhibited expertise in key areas, including machine learning, data science statistics, big data analytics, and probability & discrete mathematics.
Skills
Coding Languages:
- Python
- SQL
- R
Technical Skills:
- A/B Testing
- Data Visualization
- Object-Oriented Programming (OOP)
- Predictive Modeling
- ETL (Extract, Transform, Load)
- Data Wrangling
- Hypothesis Testing
- Computer Vision
- Statistics
- Tableau