Senior Full Stack Engineer from Kyiv, Ukraine — specialising in premium Next.js, e-commerce, and 3D / cinematic web experiences.
🎨 I run Kreo Web Studio — my own creative web studio for ambitious brands. This is where I take on freelance and contract work: landings, custom e-commerce, B2B platforms, Telegram-bot integrations, immersive 3D sites.
🛠 Lead developer behind OneCompany Global — a client-owned B2B/B2C automotive tuning distribution platform (200+ brands, 1000+ products, Lighthouse 95+). I architected the stack and own its technical roadmap, but OneCompany itself is the client's business. For hiring / questions about my work — please reach me through Kreo Web Studio or directly, not through OneCompany channels.
🎓 Master's degree in Automation & Computer-Integrated Technologies, National Technical University of Ukraine "Igor Sikorsky KPI" (2025). Thesis: autonomous weeding robot with YOLOv8 computer vision on Raspberry Pi.
📋 Quick Info
🎨 My studio: Kreo Web Studio — premium freelance web projects 🛠 Lead developer on (client project): OneCompany Global — B2B/B2C tuning platform · Next.js 16 + Prisma 6 + Telegram bot 💡 Specialised in: Next.js · React Server Components · TypeScript · Prisma · Three.js · Shopify · Telegram Bot · multilingual SEO 🧪 Currently exploring: React 19 RSC patterns, Three.js shader pipelines, Vercel AI SDK for commerce 🎓 Education: KPI Master (2025) — Automation & Computer-Integrated Technologies 🌍 Based in: Kyiv, Ukraine · UTC+2 🗣️ Languages: Ukrainian (native), English (Upper-Intermediate) 💼 Available from: May 12, 2026 · freelance & contract web projects (UA / EU / UK / US)
📩 Hire me / project enquiries → through Kreo Web Studio:
- Email:
kreoweb.info@gmail.com - Telegram: @kreowebstudio
- Studio site: kreowebstudio.vercel.app
👤 Personal contact (casual / referrals / chat):
- Email:
sashatsompel@gmail.com - Telegram: @Sascyt
- LinkedIn: linkedin.com/in/sascyt
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Kreo Web Studio | 2024 – Present
My independent creative web studio. This is the brand I work under for freelance and contract projects.
🔍 What I deliver
- ✅ Premium corporate sites, landings, and product pages on Next.js + React 19 RSC
- ✅ Custom e-commerce builds (own Next.js stack) and Shopify Liquid theme customisation
- ✅ Cinematic Three.js / R3F / GSAP / Lenis experiences for premium brands
- ✅ Full multilingual SEO architecture (sitemap, hreflang, JSON-LD, OG image, RSS)
- ✅ Telegram Bot integrations (contact forms, lead capture, order automation)
- ✅ Vercel deployment with global edge caching and Core Web Vitals monitoring
- ✅ Fixed-price packages from $2k landing to $40k+ B2B platforms
Stack: Next.js · React 19 · TypeScript · Three.js · GSAP · Framer Motion · Tailwind · Shopify Liquid · Node.js · Prisma · Telegram Bot
🔗 Studio site · 📂 Portfolio · ✉ Hire me
OneCompany Global — automotive tuning distribution platform | 2024 – Present
Note: OneCompany Global is a client-owned business, not my product. I'm the lead developer / technical architect — I built and maintain the platform, but the business itself belongs to the client. For hiring me, contact through Kreo Web Studio, not through OneCompany.
B2B/B2C platform for premium automotive tuning distribution — 200+ premium brands, 1000+ products, Lighthouse Performance 95+.
🔍 What I built
- ✅ Full architecture on Next.js 16 + React 19 RSC + TypeScript 5.9, Lighthouse 95+
- ✅ Prisma 6 + PostgreSQL schema for catalog, orders, customers, B2B pricing tiers
- ✅ NextAuth authentication, full next-intl UA/EN localisation across thousands of product pages
- ✅ Custom admin panel for catalog, orders, and content
- ✅ Telegram Bot (Grammy) — real-time order automation, internal ops notifications
- ✅ Resend + React Email transactional flows
- ✅ Cinematic Three.js + GSAP + Lenis scroll experience without breaking Core Web Vitals
- ✅ Vercel Blob media · Vercel Analytics
- ✅ CI/CD via GitHub Actions — lint, typecheck, Prisma validate, CodeQL
Tech Stack: Next.js 16 · React 19 RSC · TypeScript 5.9 · Prisma 6 · PostgreSQL · NextAuth · next-intl · Three.js · GSAP · Tailwind 3.4 · Radix UI · Zustand · Valtio · Telegram Bot Grammy · Resend · React Email · Vercel · Vercel Blob
Premium automotive tuning shops | 2023 – Present
Custom Shopify theme development and store launches for mono-brand premium automotive tuning retailers.
🔍 Highlights
- ✅ Launched 3 niche stores on Shopify with custom Liquid themes
- ✅ Pixel-perfect premium UI per brand, conversion-tuned funnels
- ✅ Core Web Vitals optimisation, international shipping logistics integration
- ✅ Custom product configurators and fitment logic for technical catalogs
Tech Stack: Shopify · Liquid · JavaScript · CSS · SEO · Analytics
Live stores:
| Store | Niche |
|---|---|
| 🔗 eventuri.shop | Carbon fibre intake systems — premium brand storefront |
| 🔗 kwsuspension.shop | Professional suspension systems — technical catalog UX |
| 🔗 fiexhaust.shop | High-end exhaust systems — media-rich product pages |
Private tutoring | 2024 – Present
🔍 View Details
- Individual lessons: HTML/CSS, JavaScript, Python
- Custom curriculum and practical assignments
- Interview prep and code review for student projects
- Beginner to intermediate level
Teaching stats: 50+ students · 4.9 / 5 average rating · custom curriculum
Master's Degree in Automation and Computer-Integrated Technologies | 2021 – 2025 National Technical University of Ukraine "Igor Sikorsky KPI"
📜 Thesis: Autonomous Weeding Robot using Computer Vision (YOLOv8 + Raspberry Pi)
My own creative web studio site. Dark Swiss-Brutalism aesthetic, cinematic shader hero, full UA/EN localisation, Telegram bot for inbound leads. This is where my freelance work lives.
Highlights:
- 🎬 Cinematic shader hero (MeshGradient + GodRays) + GSAP scroll storytelling
- 🚀 Lenis smooth-scroll · custom cursor · magnetic CTAs · animated counters
- 🌍 Full UA/EN locale system with hreflang & multilingual SEO
- 📩 Telegram bot integration for contact form (rate-limit + honeypot protected)
- 📈 SEO ready (sitemap, JSON-LD, OG image, RSS feed)
🔗 Live Studio · 📂 Repo · ✉ Hire me
B2B/B2C platform for premium automotive tuning distribution — 200+ brands · 1000+ products · Lighthouse 95+ · Telegram bot order automation.
Client-owned business. I architected and lead-build it. For hiring, contact Kreo Web Studio, not OneCompany.
Highlights:
- 🎨 Immersive Three.js + GSAP scroll experiences
- ⚡ Next.js 16 + React 19 RSC, Lighthouse 95+
- 🗄️ Prisma 6 + PostgreSQL — catalog, orders, B2B pricing tiers
- 🌍 Bilingual UA / EN via next-intl across thousands of product pages
- 🤖 Grammy Telegram bot — real-time order operations
- ✉️ Resend + React Email for transactional flows
- 🛡️ NextAuth auth · CodeQL + Prisma validate in CI
Carbon-fibre intake systems storefront. Full Liquid theme customisation, premium brand aesthetics, conversion-tuned funnel, SEO-ready.
Professional suspension systems store with technical-catalog navigation, fitment logic, and adaptive mobile UI.
High-end exhaust systems with media-rich product pages (sound videos) and cross-border trading capabilities.
| 🛍️ Delivered | 🚀 Performance | 🌟 Quality |
|---|---|---|
| 4 live projects | 95+ Lighthouse score | 4.9 / 5 mentor rating |
| 1,000+ products | Core Web Vitals green | 50+ students taught |
| 200+ brands integrated | <2s mobile LCP | Pixel-perfect UI |
- 🎨 Kreo Web Studio — taking on premium client projects (Next.js, e-commerce, 3D / cinematic sites). hire me.
- 🛠 OneCompany Global — continuing as lead developer; new payment rails, dropship integrations, AI-assisted catalog search.
- 🧪 React 19 RSC patterns — pushing server-first architecture deeper.
- 🤖 AI in commerce — Vercel AI SDK for product search, sales copilots, dynamic merchandising.
💼 For freelance / contract enquiries — please go through Kreo Web Studio. OneCompany channels are operational for that client only, not for hiring me.
👤 Personal channels (casual / referrals / quick chat):
| 📋 Info | ✍️ Details |
|---|---|
| 💼 Services | Next.js development · React 19 RSC · Custom e-commerce · Shopify themes · Three.js / WebGL · Telegram bots |
| ⏰ Response time | Within 4 hours during EU business day |
| 🌍 Timezone | UTC+2 (Kyiv, Ukraine) |
| 🗓 Availability | From May 12, 2026 |
| 💬 Languages | 🇺🇦 Ukrainian (native) · 🇬🇧 English (Upper-Intermediate) |