Portfolio
TikTok Algorithm Deconstruction
Mapped recommendation pipeline, ranking weights, and watch-time signal flow across 14 days of testing.
Spotify Wrapped Reverse Build
Rebuilt the year-end summary logic from API calls to render templates, exposing data aggregation secrets.
Instagram Feed Ranking
Documented shadow signals influencing post order, including dwell-time thresholds and engagement decay.
Uber Surge Pricing Logic
Traced real-time multiplier calculation across 200+ rides to map demand-supply curve triggers.
Snapchat Streak Mechanics
Exposed the server-side validation, timezone handling, and decay rules governing friendship streaks.
YouTube Shorts Loop Analysis
Frame-by-frame playback instrumentation revealed loop detection and re-injection intervals.
Methodology, Not Magic
Every case study follows the same protocol: instrumentation, traffic capture, binary analysis, and behavioral correlation under controlled conditions.
We publish full methodology PDFs, raw packet captures where safe, and reproducible scripts so findings stand up to independent verification.
Read Methodology →
Before / After: Duolingo Streak Recovery
Before: opaque streak loss with no warning, no grace window, and no API path for users to verify their actual activity history.
After: documented 17 server endpoints, reverse-engineered the streak calculation formula, and built a public validator still used by power users.
View Full Case Study →Portfolio
Airbnb Pricing Engine
Decoded nightly rate suggestions across 12 cities, isolating seasonality coefficients and host quality multipliers.
Twitter/X Thread Ranking
Captured in-feed experiments to map reply weighting, author authority scores, and recency decay functions.
Robinhood Order Routing
Mapped payment-for-order-flow pathways and identified PFOF counterparty selection under latency constraints.
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