Bhaumik Singh

• Architected and launched Karkhana Hub, a production-grade makerspace booking platform using Next.js 16, tRPC, and MongoDB, serving 2,000+ active users with end-to-end machine rental and workshop workflows.
• Eliminated frontend-backend contract drift by designing a strict type-safe service layer with TypeScript and tRPC in a monorepo, reducing integration bugs by 90%.
• Engineered a fault-tolerant payment pipeline with Razorpay and idempotent state transitions, achieving 100% reconciliation accuracy and zero duplicate bookings in production.
• Reduced data-fetch latency by 53% through strategic Redis caching on high-read dashboard queries, enabling responsive performance under concurrent load.
• Deployed a Dockerized CI/CD pipeline on AWS (EC2, Lambda) with Prometheus monitoring, achieving sub-minute incident detection and high-availability uptime.

• Architected a full-stack, multi-tenant booking platform using Next.js 16, TypeScript, tRPC, Prisma, and MongoDB, supporting machine rentals, lab onboarding, and workshop scheduling across Admin, Vendor, and User roles with role-based OAuth (Google/LinkedIn).
• Engineered transactional booking with Razorpay, Redis-cached dashboard queries, and containerized AWS (EC2, S3, Lambda) deployment via CI/CD with Prometheus observability — achieving 100% payment reconciliation and 53% latency reduction.

• Architected a production two-sided marketplace for fabrication labs and machine-service providers in Next.js 16 App Router, React 19 (React Compiler), Supabase Postgres, and Typesense — modelled across twelve feature-scoped migrations with Row-Level Security on every table, isolating owner, admin, and public surfaces without per-route permission code and supporting claims, location-verified reviews, social follows, and shareable comparison boards.
• Engineered a webhook-gated entitlements pipeline using Razorpay subscriptions with signature verification and an idempotency-keyed processed-events table; integrated ZeptoMail transactional email with delivery logging, a queue-driven Typesense reindex cron, and x402 premium routes — granting paid analytics, lead alerts, and tier features exclusively through signed server events with zero frontend-trusted state.

• Engineered a zero-dependency Web Application Firewall in Go, defending against OWASP Top 10 threats (SQLi, XSS, Path Traversal) with pattern-matched rule evaluation at wire speed.
• Built an interactive TUI with Bubble Tea delivering real-time traffic monitoring, event logging, and atomic live rule-reloading — zero dropped connections during configuration changes.

• Developed an ultra-fast, cross-platform background worker in Rust and Bun for high-throughput task execution and file-system operations at native speed.
• Designed a robust FFI bridge coupling Rust's safe concurrency model with Bun's JavaScript runtime, outperforming standard Node.js task runners in benchmark throughput.

• Built a graphical Terminal UI in Go and PowerShell that automates Windows system cleaning, update management, and network diagnostics from a single interface.
• Implemented safe-delete algorithms and privilege-escalation management, enabling unattended execution of administrative scripts without manual intervention.

• Engineered a Manifest V3 Chrome extension in TypeScript and Bun delivering fluid right-click mouse-gesture navigation with sub-frame latency recognition.
• Built a custom real-time canvas overlay and mathematical gesture-recognition engine handling directional tracking and circular movement detection for intuitive browser control.

• Created a full-stack platform and Chrome Extension in Next.js that auto-captures DOM state, UI screenshots, and network errors at crash time — eliminating manual reproduction steps.
• Integrated Google Gemini multimodal AI to synthesize crash contexts into structured, developer-ready issue prompts with semantic search across historical reports.

• Architected a cross-platform photo gallery using Flutter + Riverpod frontend and Fastify + TypeScript backend with Firebase OAuth, enabling secure uploads from legacy Pixel devices via tus protocol resumable uploads and BullMQ job queue workers.
• Achieved 0.3% upload failure rate, 43% database query reduction through Redis memoization, and sub-100ms page loads across web and Android via asynchronous Jimp-based image optimisation and staggered gallery rendering.

• Designed and shipped a Claude Code plugin in Rust that drives a persistent audio daemon via a nonce-tagged signal file, mapping all six lifecycle hooks (UserPromptSubmit, PreToolUse, PostToolUse, Notification, Stop, SessionEnd) to discrete playback states — eliminating hook-concurrency race conditions through guaranteed per-signal uniqueness.
• Engineered a flow-state rhythm engine modelling Sprint / Cruise / Deliberate typing cadences with layered finger-roll bursts, in-word acceleration, and probabilistic typo correction; implemented cross-platform audio output via rodio (WASAPI / CoreAudio / ALSA) with Windows EcoQoS efficiency-mode opt-in, keeping daemon CPU and battery overhead below baseline noise.

• Architected a cross-platform Spotify playback controller in Flutter + Riverpod with millisecond-accurate A–B looping and secure OAuth 2.0 Web API integration, sustaining \textgreater99% session reliability via automated token lifecycle management.
• Engineered a low-latency loop pipeline with just_audio, optimising seek operations to sub-120ms glitch-free transitions while delivering a responsive Material 3 UI across Android and Web (PWA).

• Built a self-hosted deployment platform on a rooted Android device via Termux, featuring GitHub OAuth, real-time SSE build logs, Cloudflare Tunnel auto-provisioning, and a serialised build queue optimised for ARM hardware constraints.
• Engineered a zero-native-compilation backend with Node.js, sql.js (WebAssembly SQLite), and file-based sessions to bypass ARM incompatibilities, backed by Nginx reverse proxy and PM2 process supervision for production-grade uptime.

• Built a full-stack link shortener in Next.js and TypeScript that strips tracking parameters (utm_*, fbclid, gclid, igshid, 30+ more) before storage, performs platform detection across 23 services, and serves 307 redirects backed by Appwrite.
• Shipped the same core engine across three interfaces — a website, a REST API, and a Model Context Protocol (MCP) server for AI agents — with SHA-256-hashed identity rate limiting (2\,req/s) that never persists raw IP addresses.

• Built and published a typed React icon package delivering 3,201 tree-shakeable SVG components with ESM/CJS outputs, declaration files, and currentColor-first rendering for seamless theme inheritance across design systems.
• Engineered a generator-driven build and release pipeline with tarball verification (npm pack –dry-run), constrained publish surface, and GitHub Actions provenance, improving package integrity and reducing supply-chain risk before npm distribution.

• Built a full-stack Svelte 5 + SvelteKit private cinema application in a Turborepo Bun monorepo — indexes a Google Drive folder recursively (custom pLimit(6) concurrency limiter), resolves poster art via a four-stage AniList GraphQL → OMDb → Drive → placeholder fallback with dual-layer caching (24h server in-memory Map + 30-day client IndexedDB), and byte-proxies video through the server for Range-request-aware streaming.
• Engineered a two-strategy stream resolver (Drive API alt=media key auth → public /uc confirmation-HTML fallback), a Fuse.js fuzzy-search gallery with Svelte 5 \$state/\$derived runes, GSAP 3 ScrollTrigger landing-page animations, and a zero-server localStorage resume tracker — deployed as a PWA on Cloud Run.

• Built a WooCommerce plugin delivering in-page AI virtual try-on via Google Gemini multimodal API, compositing user photos with garment images through a category-aware prompt pipeline and persisting session history in a custom MySQL table.
• Engineered a security-hardened, HPOS-compatible PHP plugin with CSRF, SQLi prevention, and XSS escaping; paired with a zero-dependency vanilla JS modal featuring lazy-loading, drag-and-drop uploads, and in-modal Add to Cart.

Relevant Coursework: Data Structures & Algorithms · Operating Systems · Database Management Systems · Data Science · Machine Learning · Software Engineering ·