Mriya Playground
Engineering portfolio

See how we build, not just what we claim

Every demo on this platform runs against a real backend. Datasets are synthetic, the engineering is not — open the Developer Console at the bottom of the page to inspect the requests and events each demo produces.

Platform state

Checking the API…

Demos

01Live

Analytics Dashboard

KPI cards, charts and a bounded data table over a synthetic e-commerce dataset, served and filtered by the backend.

What it proves

  • Filtering and aggregation on the server, not in the browser
  • Fast canvas charts that stay smooth on large data
  • A dashboard you can rearrange by dragging
  • uPlot
  • @hello-pangea/dnd
  • TanStack Query
  • NestJS
  • Zod
02Live

Real-time Monitor

A genuine WebSocket stream of generated store events and live BTC/USDT prices from Binance and Bybit, with connection state, bounded history and reconnection.

What it proves

  • A stream of up to 1,500 events per second with bounded history
  • Live Binance and Bybit prices on one chart
  • Connection state and automatic reconnection
  • ws (WebSocket)
  • uPlot
  • NestJS
  • Zod
03Live

Workflow Explorer

A server-executed workflow graph: parallel branches, conditional routing, merges, automatic retries and a guarded manual retry, drawn live as a diagram.

What it proves

  • Parallel branches, conditions and merges executed by the server
  • Automatic retries and a guarded manual retry
  • A live diagram that shows every step of a run
  • React Flow
  • TanStack Query
  • NestJS
  • node-postgres (pg)
  • Zod
04Live

AI Search Lab

Seven requests in seven languages go step by step through a model-backed search pipeline, from the input guard to SQL. A simulation: no model is called, while validation, guardrails and the data query run live.

What it proves

  • A production-style pipeline, from input guard to SQL
  • Seven languages, plus ambiguous and unsupported requests
  • Simulated steps are clearly separated from live ones
  • NestJS
  • Zod
  • TanStack Query