Established 2025 · Brugge, Belgium
No templates. No guessing. We research your customers, design the plan, and confirm it with you — line by line — before a pixel is built.
Trusted by businesses in 4 countries
Why GrowthSite Lab
GrowthSite Lab is a premium web development studio in Brugge, Belgium. We build high-performance, visually refined websites and SaaS interfaces for modern businesses. Every project starts with customer research and ends with your sign-off — line by line.
Learn More →No themes, no page-builders. Every site built from a research-first blueprint specific to your business and customers.
Site plan, copy, design, build — you sign off at each phase. Nothing ships without your green-light. No surprises.
Every decision optimized for the one thing that matters: your customer booking, calling, or paying.
What We Build
Six service lines — from premium local business sites to enterprise-grade SaaS product UIs.
Custom, research-first websites built with Next.js 15, React 19, and Tailwind CSS v4. No themes. No page builders. Every element purpose-built for your business. LCP < 2.5s on every build.
Get started →Investor-ready SaaS interfaces, product dashboards, onboarding flows, and marketing landing pages. Premium visual execution and scalable frontend infrastructure for AI-native products.
Get started →Transform your outdated website into a high-performance, conversion-focused marketing site. We audit, plan, and execute a modern frontend migration — without disrupting your current site.
Get started →Comprehensive technical SEO audit, UX evaluation, Core Web Vitals assessment, and conversion rate analysis. A prioritized action plan with specific, implementable fixes.
Get started →Product interfaces for AI-native applications, LLM-powered tools, and intelligent dashboards. Intuitive, trustworthy, visually compelling — built to win enterprise users.
Get started →Lead-generation websites and brand marketing sites engineered for conversion. Clear primary CTAs, trust signals, fast load times under 3 seconds, and mobile-first design.
Get started →Selected Work
SaaS Product
AI-native decision intelligence workspace — Next.js 15 + shadcn/ui. Auth, dashboard, command palette, AI routing, pricing, onboarding. Live in production.
View Live →
3D Flagship
High-key ivory creative homepage with dispersing glass prism React Three Fiber hero. Six-beam spectrum light, editorial editorial palette.
View Live →
SaaS Product
Config-driven analytics engine — 4 modes, 7 chart types, Recharts. Dark luxury SaaS interface with enterprise-grade visual execution.
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3D Flagship
Warm editorial React Three Fiber homepage — refractive crystal geometry, amber editorial palette, procedural caustics lighting.
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3D Flagship
Cool ultraviolet cinematic — iridescent torus knot, torch-cursor reveal, dark luxury editorial. React Three Fiber + custom GLSL shaders.
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SaaS Product
Premium dark SaaS showcase — Astro 5 + Tailwind v4 + Framer Motion. Enterprise-grade interface design for AI analytics platforms.
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3D Flagship
Dark Tech / Cyber-Luxury showcase — React Three Fiber, GSAP, bento grid. Interactive 3D product showcase with custom particle systems.
View Live →
Client Site
100% plant-based Mediterranean restaurant in Brugge — multilingual React site with 3D hero canvas, menu modal, and reservation flows.
View Live →
Client Site
Luxury hair salon est. 1976, Palermo — React + R3F + SilkWave hero. Editorial photography direction, full booking integration.
View Live →How We Work
No surprises, no scope creep. A clear, collaborative process from discovery to launch — with your sign-off at every phase.
50% of the work. Customers, competitors, conversion patterns specific to your market.
Structure, sitemap, copy draft — you approve before design starts.
High-fidelity visuals in the agreed direction. You approve before we build.
Pixel-accurate. Performance-tested. Mobile-first. LCP < 2.5s, CLS < 0.1.
DNS, analytics, training. We stay on call for 30 days post-launch.
Industries
From AI SaaS platforms to local service businesses — every project gets the same research-first, approval-driven treatment.
Investor-ready product interfaces, onboarding flows, and marketing landing pages. Scalable frontend infrastructure for growth.
Trust-building, mobile-first healthcare websites with clear service pages and appointment-booking funnels. Compliant design.
Authoritative, conversion-focused legal websites with strong local search visibility and clear consultation paths.
Luxury property showcases and listing-search experiences with premium visual execution and strong local SEO.
Conversion-focused sites for hair salons, nail studios, PMU artists, and luxury spas. Gallery, booking, and trust signals.
Fast, appetizing, mobile-first restaurant sites with menus, location info, and reservation flows built to capture local search.
Lead-generation landing pages with fast load times, mobile-first design, and conversion-optimized CTAs. Core Web Vitals ready.
High-converting course landing pages and coaching sites. Persuasive copy, clean design, and enrollment-focused funnels.
Talk to Us
Tell us a bit about the project and we'll reply within 24h with next steps and availability. No spam. No auto-sequences. Real replies from Sergiu.
From concept to live in 48 hours. Research-first, approval-driven. Every pixel built for conversion.
Order Your Website → Browse PortfolioDelivered within 48h. Based in Brugge, Belgium — serving clients globally.