Iurii Uses: #React

pi-pi.ee — Live Custom-Colour Preview

Recolour a product photo to any colour in the browser, instantly — an SVG duotone filter tints transparent master images on the fly, so a shop can offer

pi-pi.ee — B2B Deal & Document Portal

Internal sales portal that turns a wholesale deal into a full set of trade paperwork — pro forma, contract, commercial invoice, packing list, CMR and more —

HTPBE? — Internal Admin Dashboard

Role-gated admin dashboard for the HTPBE? SaaS platform — real-time KPIs, per-user quota tracking, and a zero-dependency bar chart, all server-rendered via

HTPBE? — PDF Verification Workflow Animation

Looping SVG animation illustrating a PDF verification pipeline — document stack, cloud processing, and green/red folder sorting — built with pure CSS

vatnode — EU VAT Validation API

Developer-first SaaS API for EU VAT validation via VIES with Redis caching, change monitoring, and webhook notifications.

pi-pi.ee — B2B E-commerce for Waterless Urinal Systems

i18n B2B e-commerce platform for waterless urinal products across 32 European countries with automated VAT handling, PDF invoicing, and CRM integration.

Pikkuna — i18n RAG AI System

RAG system on OpenAI and Upstash Vector with 30 language support. Includes streaming chatbot, hybrid search (semantic + keyword), AI ticket classifier, and

Pikkuna — Real-time SVG Product Configurator

Client-side SVG configurator with live preview for designing vinyl curtains and roofing panels.

Pikkuna — E-commerce for Vinyl Curtains & PVC Products

International e-commerce platform with 30 locales, product configurators, AI chatbot, and fully automated order flow: Stripe → Zoho CRM → Airtable → Mailgun →

HTPBE? — Has This PDF Been Edited?

SaaS platform for PDF authenticity verification with a public REST API.

Gated B2B pricing in Next.js: per-account price lists, server-side access control so prices never leak to crawlers, and a deal-record data model where every

How to build a React product configurator with Zustand state, DaisyUI components, Motion animations, and live SVG preview — architecture, pricing logic, and

Real-time Next.js admin dashboard: TanStack Query polling, Zustand for filter state, Sentry error boundaries per panel, and a zero-dependency bar chart.

Production transactional emails with React Email and Resend: PDF invoice generation via react-pdf, Vercel Blob temporary storage, and BullMQ Stripe webhook

React masonry layout that keeps left-to-right card order with variable heights — where the popular CSS column-count trick silently breaks.

CSS SVG animation with pure @keyframes: sync multiple tracks, fix the SVG transform override trap, and build smooth loops without GSAP or Framer Motion.

Technical SEO built into Next.js: server-side rendering, dynamic meta tags, JSON-LD structured data, and automatic sitemap generation — no plugins, just code.