Iurii Uses: #React

kri.rocks – Booking Website and Online Scheduling SaaS for Beauty Businesses

Vertical SaaS that gives a salon, barbershop or solo beauty specialist their own booking website in minutes.

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.

pi-pi.ee – B2B Deal & Document Portal

Internal sales portal that turns a wholesale deal into its full trade paperwork from one form: pro forma, contract, commercial invoice, packing list, CMR.

HTPBE.TECH – 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.

HTPBE.TECH – PDF Verification Workflow Animation

Looping SVG animation illustrating a PDF verification pipeline – document stack, cloud processing, and green/red folder sorting.

vatnode.dev – 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.fi – i18n RAG AI System

RAG system on OpenAI and Upstash Vector in 30 languages, with a streaming chatbot and hybrid search (semantic + keyword).

pikkuna.fi – Real-time SVG Product Configurator

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

pikkuna.fi – E-commerce for Vinyl Curtains & PVC Products

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

HTPBE.TECH – Has This PDF Been Edited?

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

B2B quote-to-order flow in Next.js: RFQ → quote → order state machine, per-deal line items, guarded transitions, and quote conversion without data drift.

Gated B2B pricing in Next.js: per-account price lists and server-side access control so prices never leak to crawlers.

Build a React product configurator with Zustand, DaisyUI, Motion animations and a live SVG preview – architecture, pricing logic, and performance patterns.

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 invoices via react-pdf, Vercel Blob temporary storage, and BullMQ Stripe webhooks.

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.