Atharva Fulay - Work + Education

~/Atharva Fulay/work_and_edu % pwd

~/Atharva Fulay/work_and_edu

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CASE STUDIES / SYSTEMS / ML

A resume-backed index of work across LinkedIn, Nike, and Black Mountain Systems. The focus is scale, performance, reliability, and clear business outcomes.

~/Atharva Fulay/work_and_edu % ls work_and_edu

[01] linkedin revenue analytics systems / 80+ to under 15 minutes [02] nike personalization ML / $14M annual impact [03] black mountain systems client data operations / delivery ownership [04] education applied data science and applied math

~/Atharva Fulay/work_and_edu % cat work_and_edu.md

work_and_edu

[01]

reporting systems

Senior Analytics Engineer · January 2025 - Present

role: Senior analytics engineer blending data science, analytics engineering, and business strategy across measurement and reporting systems.
context: Global teams needed faster, more reliable insights tools tied to sales workflows, offline signals, and product measurement.
built: Overhauled the three most resource-intensive insights tools, redefined the CAPI report into a holistic Offline Signals reporting system, built a Python and SQL performance-tuning framework, and led the global Sponsored Messaging migration.
impact: Cut runtimes from 80+ to under 15 minutes, reduced CPU usage by up to 95%, supported 1000+ sales reps and roughly 3K monthly runs linked to $500M+ in revenue, and saved about 10 hours per month in manual troubleshooting.
tools: Python, SQL, Spark, Databricks, Airflow, AWS, reporting systems, stakeholder alignment, and performance optimization.

Dramatic cloud photograph used as a visual accent for systems work — Signal, scale, and movement: a visual accent for the work index.

[02]

personalization ML

Nike

Senior Data Scientist · June 2021 - May 2024

role: Senior data scientist building and productionalizing personalization, affinity, and replenishment models.
context: Global marketing and consumer product teams needed reliable ML systems for targeting, product discovery, and retention.
built: Built a Gradient Boosted Trees affinity model over billions of weekly records, created an ad-hoc audience scoring framework through an internal UI, designed a replenishment time-to-event model, and led migration of 25+ production pipelines to Databricks.
impact: Powered millions of personalized marketing emails per day, cut model runtime by 70%, enabled custom audiences in under 10 minutes, and drove $14M in annual incremental revenue through personalized targeting.
tools: Python, SQL, PySpark, Databricks, AWS, Gradient Boosted Trees, feature engineering, A/B testing, and production pipelines.

[03]

client systems

Black Mountain Systems

Project Manager · July 2017 - June 2019

role: Project manager for client-facing software delivery and product implementation.
context: Key clients needed clear project ownership, product demos, training, workflow analysis, and implementation planning.
built: Led client projects, conducted training sessions, scoped implementation work, analyzed workflows, crafted BRDs, planned budgets, and documented milestones.
impact: Kept project delivery organized across stakeholder needs, technical constraints, budgets, and client-facing milestones.
tools: Project management, client communication, workflow analysis, BRDs, product demos, training, budgets, and delivery documentation.

[04]

~/Atharva Fulay/work_and_edu % cat education.txt

Applied math and data science foundations.

University of Southern California

Master of Science in Applied Data Science, 2021. Data systems, machine learning, NLP, algorithms, data mining, and UI/UX.

University of California, San Diego

Bachelor of Science in Applied Mathematics, 2017. Data inference, statistics, probability, linear algebra, and Java.

Analytics engineering and ML systems with measurable business impact.