Martin Castellon

Associate Director of Data Operations at Omni Mechanical Solutions (2025-03 – 2026-11)

Identified and addressed user needs using predictive analytics, improving customer satisfaction and support efficiency in an agile environment, with team leadership.
Built Python- and Excel-based tools to automate data validation, reconciliation, and funder reporting processes, reducing manual effort and recurring errors for migrations.
Partnered with estimating, accounting, and operations stakeholders to translate operational needs into reporting definitions and system-ready data.
Supported BuildOps project imports and reporting by diagnosing field-mapping issues and configuration gaps impacting downstream users, with migrations.
Analyzed post-process outcomes (errors, exceptions, rework) to refine workflows and improve data reliability.
Built Python-based data systems to automate data validation, reconciliation, and reporting processes for migrations across Data Operations.

Product Data Analyst at Universal Patient Link (2022-11 – 2025-01)

Developed customer-focused strategies to enhance user engagement and retention, with team leadership.
Implemented data encryption and security protocols to protect data integrity and maintain HIPAA compliance, safeguarding over 5,000 patients' data in remote monitoring and chronic care management processes, with accountability.
Customized JIRA workflows for data quality assurance, improving ticket tracking and resolution across B2C and B2B.
Analyzed healthcare quality metrics to identify trends and patterns, leading to predictive analytics models that improved patient care by 15%.
Implemented data visualization tools (Tableau and Excel) to create interactive dashboards for stakeholders, increasing data accessibility and enabling informed decision-making, with migrations.
Developed a comprehensive knowledge base, improving resolution rates by 15%, with accountability.

Operations Analyst at Sierra Health Foundation (2022-04 – 2022-10)

Used Power BI visualizations to analyze and present key metrics from nonprofit programs to support evaluation of program effectiveness and impact, with accountability.
Developed a Python script to extract and transfer data from the CORD database to Excel records, reducing manual entry time by 75% and ensuring data integrity.
Optimized Python code to flag discrepancies from CORD database files, increasing accuracy in performance program effectiveness to near 99%, with team leadership.
Consolidated participant data from multiple sources using Excel Power Query, improving data accuracy by 90% for each campaign evaluation.

Medical Data Analyst at Yosemite / Precision Pathology (2020-05 – 2021-12)

Championed data-driven strategy, prioritization, and execution of analytics projects to enhance lab efficiency and accuracy, with team leadership and accountability.
Collaborated cross-functionally to improve specimen processing speed by 20% and reduce turnaround times by 15% while maintaining HIPAA compliance, with accountability.
Developed and implemented a streamlined process for handling daily, weekly, monthly, and quarterly specimen volumes of over 2,000, increasing efficiency and accuracy by 20%, with migrations.
Created department workflows that optimized turnaround times based on physician assistants, histologic technicians, and cytologists' productivity levels, reducing processing time by 15%.
Used data analysis to identify lab operation improvements, decreasing overall turnaround times by 10% while maintaining HIPAA compliance.

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