DECISION SCIENCE & PREDICTIVE ANALYTICS ·
MODELS IN PRODUCTION

Transforming Data Into Business Impact.

Data Scientist specializing in analytics, predictive modeling, machine learning, business intelligence, and data-driven executive decision making. Proven history delivering +$18.4M in ARR across Netflix, Uber, and Airbnb.

$18.4M+ Quantified Revenue & Cost Savings
0.892 Avg. Production AUC-ROC
120TB+ Telemetry Ingested & Analyzed
⚡ Inference Latency: 11.8ms (p99)
✓ 99.4% Precision Rate
Dr. Alex Vance, Principal Data Scientist
Dr. Alex Vance
Principal Data Scientist · Decision Science Lead
Ex-Netflix Analytics · Ex-Uber Marketplace · Ph.D. Stanford
REAL-TIME INFERENCE STREAM (QPS: 12.4k) 94.2%
FEATURE FRESHNESS
4.2 min
DAILY RUNTIME
-84% Spark
SECTION 01 · BACKGROUND & PHILOSOPHY

Bridging Complex Algorithms and Executive Business Impact

Data science without commercial translation is just expensive compute. My work centers on causal clarity, business value realization, and robust production engineering.

With over 9 years of hands-on experience across Silicon Valley leaders (Netflix, Uber, Airbnb) and venture-backed FinTech unicorns, I operate at the intersection of mathematical rigor, data engineering architecture, and C-suite commercial strategy.

I specialize in moving beyond naive correlation to build production-grade causal inference pipelines, dynamic pricing engines, uplift models, and automated business intelligence cockpits. My models have directly generated over $18.4M in preserved ARR and operational cost efficiencies.

The Three Pillars of Decision Science
"1. Never optimize for statistical precision at the expense of commercial relevance. 2. A model in a Jupyter notebook creates zero enterprise value; robustness in production is everything. 3. Insights must lead directly to automated decisions or concrete executive playbooks."
▸ Causal Inference & Synthetic Controls
▸ High-Dimensional Time Series Forecasting
▸ Sub-Second Real-Time ML Microservices
▸ Executive Data Storytelling & C-Suite BI
Executive Profile Matrix
  • CURRENT ROLE Principal Data Scientist
  • EXPERIENCE 9+ Years Enterprise ML
  • EDUCATION Ph.D. Statistics (Stanford)
  • RESEARCH EMPHASIS Causal ML & Multi-Armed Bandits
  • PRIMARY CLOUDS AWS · GCP · Snowflake
  • CLEARANCE / STATUS US Citizen · Open to Executive Advisory
Discuss an Analytics Initiative
SECTION 02 · ACADEMIC RIGOR

Education & Academic Research

Rooted in probability theory, mathematical statistics, and scalable computer science at world-renowned research institutions.

Ph.D. in Statistics & Data Science
Stanford University
2013 – 2017

Specialized in Bayesian non-parametric causal inference, observational study adjustments, and high-dimensional regularization. Advised in computational statistics research labs.

  • Dissertation: Causal Inference in High-Dimensional Spatial Networks with Unobserved Confounding
  • Awarded Stanford Graduate Fellowship (top 5% of doctoral cohort)
  • Graduate Teaching Assistant for Advanced Statistical Learning (STATS 216)
M.S. in Computational Mathematical Engineering
Stanford University
2013 – 2015

Focus on stochastic optimization, numerical linear algebra, Markov Chain Monte Carlo (MCMC), and large-scale distributed graph computing.

B.S. in Computer Science & Applied Mathematics
University of California, Berkeley
2009 – 2013

Graduated Summa Cum Laude with Highest Departmental Honors. Tau Beta Pi Engineering Honor Society.

  • GPA: 3.96 / 4.00 · Chancellor's Scholar
  • Undergraduate research with AMPLab on early Apache Spark statistical primitives
SECTION 03 · SPECIALIZED DOMAINS

Core Analytical Competencies

Comprehensive capabilities spanning the entire data lifecycle: from raw distributed ingestion to causal inference and executive synthesis.

📊
Data Analytics & BI
Transforming petabytes of messy events into single sources of truth. Designing executive KPI dashboards, semantic layers, and ad-hoc investigative analytics.
Tableau · Power BI · Looker · dbt · SQL
🤖
Machine Learning Systems
End-to-end predictive pipelines: feature store engineering, model selection, hyperparameter tuning, model drift monitoring, and shadow production deployments.
XGBoost · LightGBM · PyTorch · Scikit-Learn
🎯
Predictive Modeling
High-accuracy scoring engines for customer churn probability, lifetime value (LTV), transaction fraud, credit underwriting default, and conversion propensities.
Classification · Calibration · Cost Matrices
📈
Statistical Analysis & Causal
Going beyond naive correlation. Randomized controlled trials (RCTs), synthetic control methods, difference-in-differences, and propensity score matching.
A/B Testing · CausalML · Uplift · Bayesian MCMC
⏱️
Forecasting & Time Series
Hierarchical demand forecasting, seasonal decomposition, exogenous regression, supply-demand matching, and multi-horizon revenue trajectory modeling.
DeepAR · Prophet · ARIMA · MinT Reconciliation
⚙️
Data Engineering & Pipelines
Designing resilient streaming and batch pipelines. Implementing data contracts, automated schema validations, and sub-second analytical lakehouses.
Snowflake · BigQuery · ClickHouse · Kafka · Spark
👥
Customer & Product Analytics
Deep funnel drop-off diagnostics, behavioral cohort retention curves, user journey mapping, and feature adoption correlation to long-term retention.
Survival Curves · Hazard Models · Funnels
🎨
Data Visualization & Story
Crafting clear visual narratives that compel executive leadership and board directors to take decisive action without getting lost in technical minutiae.
D3.js · Canvas · Seaborn · Executive Briefs
SECTION 04 · PRODUCTION STACK

Technical Skills & Tooling

Battle-tested toolchain spanning statistical programming, enterprise data warehouses, cloud infrastructure, and modern data platforms.

💻 Programming
  • Python (NumPy, Pandas)
  • SQL (Advanced / Window)
  • R (tidyverse, lme4)
  • Scala / Spark
  • Bash & Shell
📊 Analytics & BI
  • Tableau (Desktop & Server)
  • Power BI (DAX, PowerQuery)
  • Looker (LookML)
  • Advanced Excel & VBA
  • Google Analytics 4
🗄️ Warehouses & DBs
  • Snowflake
  • Google BigQuery
  • PostgreSQL
  • ClickHouse
  • MongoDB & NoSQL
☁️ Cloud Platforms
  • AWS (SageMaker, S3, EMR)
  • GCP (Vertex AI, Cloud Run)
  • Microsoft Azure ML
  • Databricks Lakehouse
  • dbt (Data Build Tool)
🛠️ ML & DevOps
  • Docker & Containers
  • Git & GitHub Actions
  • Apache Airflow
  • MLflow / Weights&Biases
  • Jupyter Lab & Quarto
SECTION 05 · FLAGSHIP CASE STUDIES

Production Data Science Projects

Real-world case studies detailing business problem framing, massive dataset ingestion, statistical modeling, insights, and quantifiable financial impact.

Customer Churn Prediction 18.4M Accounts · XGBoost
SUBSCRIPTION RETENTION · REVENUE PRESERVATION

Customer Churn Prediction & Retention Optimization

Engineered an end-to-end churn risk prediction pipeline with XGBoost, SHAP causal interpretability, and automated proactive retention playbooks.

$4.2M Annual Recurring Revenue Saved
-24.8% Voluntary Churn Reduction
Python · XGBoost · Snowflake · SHAP
Sales Forecasting 120k SKUs · Hierarchical
SUPPLY CHAIN & DEMAND INTELLIGENCE

Hierarchical Demand & Sales Forecasting System

Multi-horizon demand forecasting model reconciling SKU-level predictions up to country-level financial guidance using DeepAR and MinT.

11.2% Weighted MAPE (Down from 28.4%)
$3.2M Inventory Holding Cost Reduction
DeepAR · LightGBM · Prophet · PyTorch
Recommendation Engine 45M Daily Impressions · <12ms
PERSONALIZATION & DEEP RETRIEVAL

Two-Tower Neural Content Recommendation System

Dual-encoder candidate generation and contextual ranking microservice serving real-time personalized media recommendations.

+34.2% Daily Stream Time Engagement
11.8ms p99 Latency at 12,000 QPS
TensorFlow · ScaNN · Redis · Milvus
Fraud Detection $4.8B Volume · 650 TPS
FINTECH RISK & GRAPH NEURAL NETWORKS

Real-Time Transaction Fraud Detection Graph

Sub-second anomaly detection graph combining structural graph neural network embeddings with streaming gradient boosting.

99.4% Fraud Precision Rate
$6.4M Blocked Fraud in 9 Months
GraphSAGE · Neo4j · Kafka · CatBoost
Marketing Analytics $24M Budget · 14 Channels
GROWTH ATTRIBUTION & CAUSALITY

Bayesian Media Mix Modeling & Multi-Touch Attribution

Unified attribution engine combining Bayesian MMM (Markov Chain Monte Carlo) with randomized geo-lift experimentation post-iOS ATT.

+28.4% Return on Ad Spend (ROAS)
-27.1% Blended CAC Drop ($84 to $61)
PyMC · GeoLift · BigQuery · Looker
Product Analytics 2.4B Monthly Events · 180ms
LAKEHOUSE ARCHITECTURE & SELF-SERVE BI

Self-Serve Product Analytics & Behavioral Cohorts Platform

Analytical data lakehouse on ClickHouse and dbt enabling real-time retention and funnel queries for product teams without SQL queues.

180ms p95 Query Latency on 2B+ Rows
-72% Data Request Ticket Backlog
ClickHouse · dbt · Airflow · Reverse-ETL
Credit Risk 850k Applications · ECOA
CREDIT RISK & FAIR LENDING COMPLIANCE

Automated Credit Underwriting & Default Risk Scoring

Monotonic gradient-boosted underwriting scorecard maximizing predictive power while strictly adhering to ECOA regulatory compliance.

-31.0% Portfolio Default Rate Reduction
68% Instant Automated Decisioning
Monotonic XGBoost · WoE · Plaid API
Healthcare Analytics 320k Encounters · 6 Hospitals
CLINICAL INFORMATICS & NLP

Clinical Patient Readmission Risk & Resource Optimization

Clinical decision-support dashboard predicting 30-day unplanned readmission probability at point-of-discharge with EHR integration.

-19.4% 30-Day Readmissions Cut
$2.8M Annual CMS Penalty Avoided
BioClinicalBERT · CatBoost · FHIR API
SECTION 06 · LIVE VISUAL MOCKUPS

Interactive Analytics Dashboard Cockpit

Explore interactive visual mockups across core operational functions. Switch categories and time ranges to simulate dynamic KPI re-aggregation.

TIME WINDOW:
Sales Revenue: Actual vs ML Projected Forecast ($k) Confidence: 95% · Model: LightGBM+DeepAR
Regional Quota Attainment (%) LIVE
SECTION 07 · THE ANALYTICAL JOURNEY

Data Storytelling: From Raw Signals to Enterprise Impact

How world-class data science bridges messy telemetry and multi-million dollar boardroom strategy in 7 systematic phases.

Phase 01 · Alignment

Executive Problem Definition & Scope

PHASE ARTIFACTS & DELIVERABLES:
    EXECUTIVE SYNTHESIS AUDITED
    KEY QUANTIFIED METRIC
    Target Cost of Churn: $18.4M ARR
    "Rigorous mathematical models fail when divorced from the operating reality of frontline business owners. Storytelling is the catalyst that transforms algorithms into action."
    SECTION 08 · MODEL INTROSPECTION

    Machine Learning Model Inspector

    Interactively test classification decision thresholds. Watch the Confusion Matrix, Precision, Recall, and F1 Score recalculate dynamically in real time.

    Confusion Matrix (10,000 Sample Holdout) Test Split: 20%
    PRED POSITIVE
    PRED NEGATIVE
    ACTUAL POS
    1,840 True Positive (TP)
    260 False Negative (FN)
    ACTUAL NEG
    210 False Positive (FP)
    7,690 True Negative (TN)
    Classification Probability Threshold ($\tau$): 0.50
    0.10 (Aggressive Recall) 0.50 (Balanced) 0.90 (Conservative Precision)
    95.3%
    Accuracy
    89.8%
    Precision
    87.6%
    Recall
    0.887
    F1 Score
    Global Feature Importance (SHAP Values) TreeExplainer
    Top predictors show high non-linear interaction with engagement latency and billing retry anomalies.
    SECTION 09 · SCHOLARSHIP

    Research Papers & Whitepapers

    Peer-reviewed conference publications, technical whitepapers, and industry case studies contributing to modern statistical methodology.

    ACM SIGKDD CONFERENCE ON KNOWLEDGE DISCOVERY (2024)

    Scalable Quasi-Experimentation via Synthetic Controls in Two-Sided Marketplaces

    A. Vance, R. Chen, M. Thorne · Best Applied Paper Nominee

    Proposes a penalized Bayesian structural time series framework to resolve spatial network interference during hyper-local A/B rollouts in urban ride-hailing networks.

    NEURIPS WORKSHOP ON CAUSAL MACHINE LEARNING (2023)

    Counterfactual Uplift Modeling for Customer Retention Incentives

    A. Vance, S. Narang · Oral Presentation

    Demonstrates how two-model and X-learner causal estimators prevent subsidizing "sure things" in churn prevention campaigns, saving 34% in wasted discount spend.

    IEEE TRANSACTIONS ON BIG DATA (2022)

    Hierarchical Time Series Reconciliation Under Extreme Seasonality Constraints

    A. Vance, H. Lindqvist

    Formulates quadratic optimization to guarantee that SKU-level supply predictions sum exactly to regional financial forecasts while preserving marginal volatility bounds.

    ENTERPRISE ANALYTICS WHITEPAPER

    The Modern Data Stack in 2026: From dbt & ClickHouse to Real-time Reverse-ETL

    Dr. Alex Vance · Executive Technical Advisory

    A blueprint for data engineering teams transitioning from sluggish overnight batch runs to sub-second streaming lakehouses with automated data contract enforcement.

    SECTIONS 10 & 11 · QUANTIFIED RESULTS

    Measurable Business Impact Dashboard

    Real metrics delivered across production systems. Every analytical model must tie directly to revenue expansion, cost reduction, or risk mitigation.

    +$18.4M
    Cumulative Revenue Preserved & Generated
    Directly audited ARR impact delivered across subscription retention playbooks, dynamic pricing surge models, and recommender engagement lifts.
    -24.8%
    Subscriber Churn Reduction
    Early detection horizon expanded from 7 to 45 days, allowing automated personalized interventions that saved over 140,000 customer accounts.
    $3.2M
    Supply Chain Holding Cost Savings
    Replaced heuristic inventory reordering with hierarchical ML time series forecasting across 120,000 SKUs, cutting stockouts by 38.5%.
    48+
    Projects Completed
    120TB+
    Datasets Analyzed
    85+
    Models Built in Prod
    160+
    Dashboards Created
    350+
    Insights Generated
    99.4%
    Fraud Precision
    SECTION 12 · CREDENTIALS

    Industry Certifications & Professional Licenses

    Formally verified proficiencies across leading cloud data providers, business intelligence vendors, and statistical institutes.

    AMAZON WEB SERVICES (AWS)
    AWS Certified Machine Learning – Specialty
    DATABRICKS
    Certified Data Scientist Associate & Spark Developer
    SALESFORCE / TABLEAU
    Tableau Desktop Certified Professional
    MICROSOFT
    Microsoft Certified: Power BI Data Analyst Associate
    GOOGLE CLOUD
    Google Cloud Professional Data Engineer
    IBM
    IBM Data Science Professional Certificate
    COURSERA / DEEPLEARNING.AI
    Deep Learning Specialization (Dr. Andrew Ng)
    UDACITY
    Data Streaming & MLOps Nanodegree
    SECTION 13 · CAREER RECORD

    Industry Leadership Experience

    Leading high-performing data science, analytics engineering, and business intelligence teams in hyper-growth tech environments.

    Principal Data Scientist · Decision Science Lead
    Netflix Analytics · Los Gatos, CA
    2023 – Present
    • Spearheaded global subscriber retention and multi-horizon churn forecasting on Snowflake, Spark, and XGBoost, achieving 0.892 AUC-ROC.
    • Preserved $4.2M in annual recurring revenue by developing automated churn early-warning playbooks for 18.4M active accounts.
    • Mentored a team of 6 senior data scientists; pioneered causal synthetic control methods to measure content release incrementality across 40+ international territories.
    Senior Machine Learning Scientist
    Uber Marketplace Intelligence · San Francisco, CA
    2020 – 2023
    • Engineered real-time dynamic supply-demand spatial pricing models processing 12,000 requests/sec with <15ms p99 latency in Go and PyTorch.
    • Increased marketplace driver utilization by 14.8% and reduced passenger ETAs by 1.6 minutes during severe peak surges.
    • Partnered with VP of Product and Operations Directors to design and evaluate 80+ large-scale cluster-randomized A/B experiments across North America and EMEA.
    Senior Analytics & BI Engineer
    Airbnb Growth & Marketing · San Francisco, CA
    2017 – 2020
    • Architected unified multi-touch attribution (MTA) and Bayesian media mix models (MMM) optimizing $24M in annual digital advertising spend.
    • Reduced blended customer acquisition cost (CAC) by 27% and increased Return on Ad Spend (ROAS) from 2.9x to 3.8x.
    • Built production dbt transformation pipelines serving executive reporting dashboards for 450+ internal stakeholders.
    SECTION 14 · ENDORSEMENTS

    Stakeholder & Executive Testimonials

    Perspectives from engineering executives, business leaders, and academic mentors on collaboration and commercial execution.

    "Alex possesses that rare combination of elite mathematical depth and executive clarity. At Netflix, his churn early-warning models transformed how our retention teams operate, directly preserving millions in ARR. He makes complex Bayesian models intuitively clear to the C-suite."

    VP of Analytics
    Elena Rostova
    VP of Data & Analytics, Ex-Netflix

    "At Uber Marketplace, Alex engineered spatial dynamic pricing algorithms under extreme sub-15 millisecond latency constraints. His systems drove measurable efficiency gains in driver hours and passenger wait times across 40 cities without sacrificing stability."

    Director of Marketplace
    David Chen
    Senior Director of Engineering, Uber

    "During his doctoral work at Stanford, Alex established foundational contributions to causal inference under high-dimensional unobserved confounding. He solves the hardest statistical challenges with remarkable engineering pragmatism."

    Professor
    Prof. Jonathan Meyers
    Department of Statistics, Stanford University
    EXECUTIVE THOUGHT LEADERSHIP · LINKEDIN

    Impactful Professional Insights

    Swipe or scroll through recent technical essays, production architectures, and decision science methodologies published by Dr. Alex Vance on LinkedIn.

    Feed: Live Synced · 4.8k Leaders · Updated just now
    Follow Dr. Alex Vance on LinkedIn (4,800+ Followers)
    SECTION 15 · THOUGHT LEADERSHIP

    Data Science & Analytics Blog

    In-depth technical guides, statistical methodologies, and executive strategic essays on modern analytics architecture.

    Causal Inference in A/B Testing
    CAUSAL INFERENCE · 8 MIN READ

    Why Naive A/B Tests Fail in Two-Sided Network Marketplaces

    When driver and rider behavior interacts in real time, classical SUTVA assumptions break. Here is how we implemented cluster randomization and synthetic controls at scale.

    Read Full Essay →
    Hierarchical Time Series
    TIME SERIES & FORECASTING · 12 MIN READ

    Reconciling SKU-Level Forecasts with Board-Level Guidance

    A deep dive into Minimum Trace (MinT) and optimal combination matrix algebra to ensure supply chain replenishment matches GAAP revenue projections.

    Read Full Essay →
    Sub-second ML Microservices
    MLOPS & PRODUCTION · 10 MIN READ

    Sub-15ms ML Inference in Production: From Python to C++ / ONNX

    How we eliminated Python Global Interpreter Lock (GIL) bottlenecks, vectorized model features with SIMD, and deployed dual-tower rankers on Triton Inference Server.

    Read Full Essay →
    SECTION 16 · GET IN TOUCH

    Initiate an Analytics Engagement

    Available for Principal Data Science roles, Executive Advisory, Machine Learning architecture reviews, and high-impact analytics consulting.

    📧
    📱
    OFFICE PHONE
    +1 (415) 890-3412
    📍
    PRIMARY LOCATION
    San Francisco, CA · Hybrid / Worldwide Remote
    🔗
    PROFESSIONAL CHANNELS