Backend Engineer | System Architecture & AI-Powered Products

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Dhairya Darji • Peerlist

WorldBid is a live competitive leaderboard where projects compete for positions across 195 countries.Pick a country, choose a position, and claim your place on the map. If another project holds the position you want, you can challenge it with a higher bid and climb the rankings.How it works<ul><li>🌍 Explore 195 country leaderboards on an interactive 3D globe.</li><li>👑 Claim a position and compete for the Crown.</li><li>⚔️ Challenge projects already holding a position.</li><li>📈 Climb the rankings as competition changes.</li><li>🔎 Discover projects from builders around the world.</li></ul>Every country has its own independent leaderboard, so projects can compete in multiple countries without their positions or stakes carrying between territories.WorldBid is built to make project discovery more interactive, competitive, and fun.

WorldBid

<h3>Paperweight UI is an editorial design system engineered for Next.js, Tailwind CSS, and AI pair programmers. Built with tactile depths, hairline ink borders, and a ready-to-use AI design instruction file.</h3><ul><li>Tactile Interface UI: Components feature layered depth, top bevel light highlights, etched recessed wells, and crisp hairline borders.</li><li>Warm Canvas Standard: Screen background is a soft off-white, with pure white reserved for elevated cards and panels.</li><li>Active Press Physics: Interactive controls include mechanical click feedback.</li><li>Dynamic Theme Tokens: Customizable brand accent colors and theme tokens for a consistent look and feel.</li><li>Structural Layout &amp; Page Grid Guide: Provides guidelines for building full pages with a responsive grid and background overlays.</li><li>Comprehensive Component Specifications: Detailed code snippets and specifications for various components including buttons, inputs, cards, and more.</li><li>Instructions for AI Coding Assistants: Strict guidelines for AI to generate components matching the tactile design language.</li><li>Open Source: MIT License, encouraging community contributions.</li></ul>Explore the UI Playground, browse components, and utilize the AI DESIGN.md prompt system to streamline your development workflow.

Paperweight UI

<h3>The zero-config database built for the vibe-coding era.</h3><h3>💡 The Problem</h3>When building apps with AI tools like Cursor, <a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://Bolt.new">Bolt.new</a>, v0, or Lovable, setting up a database is always a bottleneck. You end up spending more time writing schemas, configuring connections, or managing localstorage syncing than writing actual features.<h3>⚡ The Solution</h3>CloudState&nbsp;is a zero-config persistence layer designed to work natively with AI code generation. It gives you a persistent, secure JSON endpoint in under 10 seconds.Copy-paste our custom system prompt into your LLM editor or&nbsp;.cursorrules, and let the AI sync your app state dynamically using simple fetch requests.<h3>🌟 Key Features</h3><ul><li>⚡ Zero Configuration:&nbsp;Skip schemas, migrations, and database provisioning. If it’s valid JSON, CloudState will store it.</li><li>🤖 Tailored LLM Prompts:&nbsp;Copy-paste project-specific system prompts directly into Cursor, Bolt, or Lovable to teach the AI exactly how to read and write your state.</li><li>🔒 Concurrency Protection:&nbsp;Built-in optimistic locking via the&nbsp;x-version&nbsp;header prevents concurrent users or multi-agent runs from overwrites.</li><li>🚀 Ultra-low Latency:&nbsp;Built with Hono on the edge and Neon Serverless PostgreSQL (JSONB) for sub-30ms operations.</li><li>🔌 Pure Fetch API:&nbsp;No bloated SDKs required. Use standard&nbsp;fetch()&nbsp;GET to read and PUT to overwrite.</li></ul><h3>🛠️ How It Works (in 10 seconds)</h3><ol><li>Initialize:&nbsp;Create a project on&nbsp;<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://cloudstate.web.app">cloudstate</a> to get your unique endpoint slug and API key.</li><li>Integrate:&nbsp;Drop the auto-generated prompt into your AI assistant.</li><li>Sync:&nbsp;Let the AI read and write state directly:javascript// Overwrite stateawait fetch("<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="https://cloudstate.onrender.com">https://cloudstate.onrender.com</a><a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="https://api.cloudstate.dev/v1/db/your-project">/v1/db/your-project</a>", {method: "PUT",headers: { "x-api-key": "your_api_key" },body: JSON.stringify(state)});</li></ol><h3>📦 Tech Stack</h3><ul><li>Frontend:&nbsp;Next.js (React) + Clerk Auth</li><li>Backend:&nbsp;Hono API deployed on Render</li><li>Database:&nbsp;Neon Serverless PostgreSQL + Drizzle ORM</li><li>Analytics:&nbsp;Umami Analytics</li></ul>

CloudState: Zero-Config JSON DB

<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://anchor-md.web.app/">anchor.md</a> is a lightweight, local-first AI context system designed to eliminate context loss when switching between LLMs or IDEs.It operates on a strict local-first principle—all context files live securely within your repository. This means zero SaaS fees, zero cloud sync dependencies, and absolute data privacy. Because it uses standard Markdown, there's no vendor lock-in, and everything integrates perfectly with your existing Git workflow.<h3>⚡ Key Features</h3><ul><li>🧠 Zero Context Loss: Seamlessly switch between Claude, ChatGPT, Gemini, Copilot, and others mid-task without repeating instructions.</li><li>🔌 Model-Agnostic: Compatible with any AI tool that supports local file reading.</li><li>🔒 Local-First &amp; Secure: Your data stays in your repo. No cloud sync, no subscriptions, maximum privacy.</li><li>🌳 Git Native: Managed entirely via plain Markdown files. Read, edit, and version control your context just like your code.</li><li>🚦 Multi-Agent Safe: Strict synchronization rules prevent race conditions in multi-agent environments.</li><li>🎭 Role-Based Prompts: 6 pre-built expert roles (Backend, Frontend, DevOps, QA, Designer, Security) for hyper-precise AI interactions.</li><li>⚔️ Conflict Free: Clear, structured boundaries prevent different AI agents from stepping on each other's toes.</li></ul><h3>🚀 Getting Started</h3>Bootstrap your project with a single command: npx create-anchor-mdOnce installed, populate the @<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://main.md">main.md</a> file with your project details, tech stack, and architectural goals. Tag AI agents with @<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://main.md">main.md</a> or specific role prompts in your favorite IDE to give them instant, full-project context. The AI will then auto-sync its progress with files like <a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://TODO.md">TODO.md</a> and CONTEXT_<a target="_blank" rel="noopener noreferrer nofollow ugc" class="break-all link-break text-gray-500 hover:underline" href="http://MEMORY.md">MEMORY.md</a>.

anchor.md — Portable AI Context Management

I built SyncClip because moving temporary text snippets, URLs, or 2FA codes between a smartphone and a laptop remains a fragmented, friction-heavy experience. Native solutions like Apple's Universal Clipboard look great until you introduce a cross-ecosystem device like a Windows PC or an Android phone.SyncClip operates as a transient, web-native clipboard sync protocol. By moving the entire synchronization engine directly into the browser viewport via Full-Duplex WebSockets, it establishes an instant cloud relay that works independently of your hardware manufacturer or local network topology.Key Protocol Highlights<ul><li>⚡ Real-Time Sync — Powered by Convex for sub-100ms state updates globally across all connected screens.</li><li>🔒 Account-Free Sovereignty — Zero registration, zero tracking cookies, and zero logins required.</li><li>🔥 Ephemeral Lifecycles — Data lives in a temporary, hot-memory buffer layer and automatically purges after 24 hours of inactivity.</li><li>🛡️ Burn After Reading — Toggle active security mode to permanently erase database entries the exact millisecond a receiving node pulls the payload.</li></ul>Built with an Editorial Brutalist design philosophy, it respects screen real estate with a completely ad-free, text-focused interface. Try the side-by-side terminal sandbox directly on the homepage.