Shreyas Chaudhary

Cloud infrastructure is invisible — most engineers never see how a data center physically stays alive. A walkable, first-person 3D data-center simulator. Explore server halls in a thermal view, trigger cooling and power failures, and watch a live power chain (grid → UPS → generator) respond — all driven by a pure, unit-tested simulation core.

• ▹First-person exploration of 6 openable racks and 36 live-simulated servers with a thermal view
• ▹Real-time power chain — utility grid, UPS batteries and diesel generator with realistic timing

Subscription trackers like Rocket Money charge a fee — or take a cut of the savings — just to tell you where your money already went. A free, open-source alternative. It links a bank through Plaid, reads the rhythm of each merchant's charges to find what recurs, projects the next 30 days of cash, and learns when you get paid — so the thing that finds your wasted money isn't itself a subscription.

• ▹Recurrence engine detects subscriptions from charge rhythm rather than a list of known merchants — it catches rent and the gym, not just Netflix
• ▹30-day forward calendar of every charge and deposit, with projected cash on hand and payday prediction

Counting a firehose of analytics events is trivial until scale — then you either block on the database or quietly start losing events. An event counting and analytics service written from scratch in Go. It accepts events without ever waiting on Postgres, batches writes behind an in-process queue, and answers "how many today?" from per-minute rollups instead of scanning millions of rows.

• ▹Queue-and-batch ingest that never blocks the caller; graceful shutdown drains every accepted event
• ▹From-scratch HyperLogLog for unique-user counts — roughly 16 KB per event per day at ~1% error

World Cup predictions are usually hype — not evidence, and rarely honest about uncertainty. A full-stack machine-learning app that predicts the 2026 World Cup. It rates all 48 nations from 49k real historical internationals, predicts any match, folds in fan sentiment, and runs thousands of Monte Carlo tournament simulations to estimate every team's odds of lifting the trophy.

• ▹Trained on 49k real internationals (1872–2026) with chronological train/val/test — ~0.61 accuracy
• ▹Monte Carlo simulates the full 48-team tournament thousands of times for each team's title odds

Most retail investors buy on hype and can't say why they own what they own. An evidence-based investing workbench: deep stock research, honest statistical forecasts, and a $100k paper-trading engine with exact accounting — so you can practice a disciplined process before a single real dollar moves.

• ▹Forecast Lab benchmarks statistical models (Damped Holt, AR) against a naive baseline by MAPE, surfacing a prediction only when it wins
• ▹Ledger-correct paper trading — every buy, sell, and balance update reconciles exactly, and invalid trades are rejected before they touch state

Job seekers rarely get objective feedback on how a resume reads to screeners and ATS systems. A resume analyzer and builder that scores across impact, skills, structure, ATS readiness, and writing — every check visible, matched against any job description, with a step-by-step builder and live PDF export. Runs entirely client-side, no sign-up.

• ▹Transparent scoring across 5 weighted categories with a letter grade (A+ to D)
• ▹Job-description keyword matching and ATS-readiness analysis

Personal-finance apps demand cloud accounts and hand your bank data to third parties. A local-first, fully offline desktop app that imports bank and credit-card statements (CSV or PDF) and turns them into categorized analytics, budgets, and a natural-language query interface — every byte processed on your own machine.

• ▹Smart CSV / PDF statement import with merchant extraction and ~150 auto-categorization rules
• ▹Interactive dashboards, budgets with alerts, and exportable charts

Cluely charges a monthly subscription for an AI overlay that watches your screen and listens to your calls. A self-hostable macOS replica. A frameless, always-on-top panel that macOS excludes from screen capture, transcribes both your microphone and the meeting's system audio locally with Whisper, and streams an answer from whichever model you plug in.

• ▹Overlay excluded from screen sharing via setContentProtection — invisible to Zoom, OBS, and screen recording
• ▹Dual-channel capture labels your mic as You and system audio as Them, giving the model real conversational context

Path-planning behavior in dynamic traffic is hard to reason about without a visual sandbox. A self-driving car simulation navigating dynamic traffic with greedy pathfinding and collision avoidance.

• ▹Greedy pathfinding through moving traffic
• ▹Collision-avoidance system

Remote teams need a zero-friction shared canvas that feels instant. A collaborative whiteboard desktop app with real-time multi-user drawing over WebSockets.

• ▹Real-time synchronized drawing across clients
• ▹Desktop app packaged with Electron

Crowdfunding platforms ask backers to trust a middleman with the money — high fees, opaque spending, refunds at the platform's discretion. An Ethereum crowdfunding contract that holds contributions in on-chain escrow. The campaign manager cannot move a single wei without majority approval from the people who paid in, and if the deadline passes with the target unmet, any contributor can reclaim their money.

• ▹Contributor-majority voting gates every payment out of escrow
• ▹Automatic refunds once the deadline passes with the target unmet

Epidemic dynamics are unintuitive; simple charts hide how network structure drives spread. An agent-based and social-network-based simulation visualizing disease propagation through a population.

• ▹Agent-based and network-based propagation models
• ▹Visual simulation of infection dynamics

Students couldn't easily find Cal Poly Pomona biology faculty by research area. A domain-specific search engine indexing faculty by research interests and expertise for the CPP Biology Department.

• ▹Custom crawler and index over faculty pages
• ▹Ranked search by research interest

Sports fans bounce between apps for Premier League and NBA player info. A responsive web app unifying Premier League and NBA player stats and information.

• ▹Unified player search across two leagues
• ▹Live stats via sports data APIs

Cocktail recipes are scattered and hard to browse by what you have on hand. An interactive cocktail discovery app with a React front end and a Laravel + GraphQL backend over TheCocktailDB.

• ▹GraphQL API over TheCocktailDB
• ▹Ingredient-based recipe discovery

Pokémon data is deep but fragmented across wikis. A comprehensive Pokémon information center with fast search and rich detail pages.

• ▹Fast search across all generations
• ▹Rich stat and evolution views

Museum collections are hard to explore remotely. An interactive gallery streaming artworks in real time from the MET Museum API.

• ▹Live artwork data from the MET API
• ▹Curated browsing experience