From writing scripts to building for the web.

Built a full-stack equity-research platform that scores 1,700+ Indian stocks 0–100 through a deterministic, four-guardrail Valuations Engine — explaining every verdict in plain English instead of acting as a black box. Architected a provider-agnostic data layer behind a single repository interface with runtime-swappable backends (committed JSON snapshot, PostgreSQL, live microservice, mock), enabling zero-infrastructure local runs and secret-free CI builds. Engineered a 'cached page, live price' pattern — ISR/CDN HTML for fast LCP with a request-coalesced quote proxy (Python · FastAPI · yfinance) delivering a live 30s price tick. Weekly data refresh runs on GitHub Actions, with property-based tests (fast-check) guarding the engine.

Built a cross-platform desktop app (Electron + Next.js) that saves Instagram reels and videos straight to disk — paste a link, pick a quality, get a clean .mp4. Runs entirely on the user's machine with zero servers, wrapping yt-dlp and FFmpeg for fetching and automatic audio/video muxing behind a hand-drawn 'paper notebook' UI (rough.js) with real download progress and a queue. Ships Windows and macOS installers through a GitHub Actions release pipeline, with Vitest unit tests and fast-check property-based suites covering error mapping and quality ordering.

Built a cinematic gameplay archive where creators publish and share their best gaming moments. Offloaded playback to the YouTube iframe player — the 'Ghost Engine' — so the platform runs with zero video storage or encoding costs, while a PostgreSQL layer owns the product logic: three visibility tiers (private/unlisted/public), a pending → approve/reject moderation pipeline, per-video view and watch-time analytics, and shareable creator profiles with vanity URLs. Implemented Google OAuth via NextAuth and session-aware fuzzy search (Fuse.js) that only surfaces public videos or the searcher's own.

Founded and published a Chrome Web Store extension (Manifest V3) that strips YouTube distractions using zero-lag, pure CSS injection — shipped through versioned releases (v1.0.4) with CWS compliance and a privacy policy. Produced a state-driven Productivity Dashboard featuring a custom Pomodoro timer and contextual task manager. Forged a robust MutationObserver engine for surgical, zero-reload DOM manipulation across SPA navigations.