Senior BI Developer & Data Analyst
10+ years translating complex data into decisions that actually get made — across automotive, media, and healthcare. I build Power BI and Tableau solutions end-to-end, from the data model to the dashboard, with Python and AI/ML increasingly in the mix.
Ensemble classifier trained on 775K+ OFLC employer applications to predict US work visa certification outcomes. Tuned Random Forest achieved F1=0.82 with 87% recall — wage-to-prevailing-rate ratio surfaced as the dominant approval signal.
Predicted quarterly revenue for a multi-city supermarket chain using tree-based ensemble regressors. Tuned XGBoost delivered R²=0.90 and MAPE=6.45%, enabling reliable inventory planning and data-driven procurement decisions at scale.
Classified which bank customers are likely to purchase personal loans, optimizing for recall to catch every potential buyer. Pre-pruned decision tree hit AUC=0.97 with perfect recall — income and monthly credit spend were the strongest predictors.
RAG pipeline over the Merck Medical Manuals to assist clinicians with diagnostics, drug lookups, treatment protocols, and critical care queries. LangChain + ChromaDB retrieval grounds a local Llama LLM in vetted medical sources, reducing hallucination risk in high-stakes scenarios.
Transfer learning pipeline (VGG-16 + FFNN) to detect helmet compliance from construction site camera images. Trained on 631 images across varied lighting and angles with data augmentation — achieved 100% test accuracy and a perfect confusion matrix.
Exploratory analysis of a food aggregator's order dataset to surface demand patterns by cuisine type, delivery timing, and customer ratings. Identified a 5.87-minute weekday delivery lag and proposed targeted promotions to close the gap and drive retention.
End-to-end dbt project on BigQuery modeling the Olist Brazilian e-commerce dataset. Raw Kaggle CSVs are loaded to BigQuery, staged, transformed through an intermediate layer, and surfaced as business-ready marts covering order performance, customer LTV, seller rankings, revenue by category, and delivery efficiency.
Architect and deliver end-to-end Power BI solutions across multiple business functions, owning the full lifecycle from requirements to deployment. Led Qlik Sense → Power BI migration for Ford Pro Charging, converting mission-critical dashboards and giving ops teams real-time metrics to diagnose and resolve issues faster. Designed an AI-powered CX dashboard with NLP-based survey categorization to surface recurring issues and reduce manual analysis time. Currently building a predictive sales dashboard layering AI-driven propensity models to identify likely buyers for Solution Managers.
Built a proprietary Tableau report integrating three data sources for the Director of Programming and WBD CEO, delivering revenue visibility into show migration from MotorTrend to MAX. Established the analytics foundation for a new FAST business vertical — defining KPIs, architecting data ingestion into Amazon Redshift, and building Tableau reporting to support launch decisions. Led MotorTrend's first A/B testing program using Amplitude, producing a 46% increase in ad impressions served. Cut reporting turnaround by 30% through automated Tableau email subscriptions. Also managed full Tableau Server administration including upgrades and user provisioning.
Designed and delivered Tableau dashboards giving KP OnCall business users actionable operational insights across a healthcare contact center environment. Unified complex data streams from Genesys, Clarity, and KPATHS into consolidated reporting views, eliminating silos and reducing time-to-insight for operations leadership. Applied advanced Tableau features — LOD expressions, parameter controls, data blending, and statistical calculations — to build production-grade reports.
Served as subject matter expert for customer experience data, building a standardized BI reporting platform via Cognos and Tableau deployed across 10+ countries for all Customer Contact Centers. Engineered composite datasets supporting a third-party data monetization initiative and developed custom SQL to analyze mobile app usage patterns, directly informing product roadmap decisions.
Python, Machine Learning, NLP, Neural Networks. Also holds a BS in Management Information Systems from Florida State University. Certifications: GCP Cloud Digital Leader, Tableau Desktop 10 Qualified Associate, HackerRank Advanced SQL. Completed The Complete dbt Bootcamp on Udemy.
Senior BI Developer and Data Analyst open to new opportunities — Power BI, Tableau, full-stack analytics, and data-driven product work. Also growing into analytics engineering through dbt and cloud data platforms. Open to a conversation if you need someone who can take data from raw to reliable to actually used.
jab09c@gmail.com