Skip to content
Crux Development
Available for select engagements - Q4 2026

Engineering High-Performance Web Experiences.

We design and build fast, conversion-focused websites and web applications with React, TypeScript, and Node.js - for teams that need their product to feel as good as it performs.

Get a QuoteView our work

What we do

Four areas of focus, each executed with the same attention to detail - from the first pixel to the production deploy, and the traffic that follows.

Landing Pages

High-converting, meticulously crafted pages built to turn visitors into customers from the first scroll.

  • Conversion-focused copy structure
  • Sub-second load times
  • A/B test-ready builds

Web Apps & Admin Panels

Customer-facing products and the admin panels, dashboards and internal tools behind them - architected properly, not bolted together.

  • React & TypeScript front-ends
  • Back-ends in Node, Java or PHP
  • Auth, payments & integrations

Performance & UX Optimization

Audits and rebuilds that turn slow, dated interfaces into fast, intuitive experiences users trust.

  • Core Web Vitals tuning
  • Accessibility & UX audits
  • Design system refactors

SEO & Google Presence

The build is only half of it - we make sure the right people actually find it, in search results and on the map.

  • Technical & on-page SEO
  • Google Ads search campaigns
  • Google Business Profile & Maps

Selected work

A few flagship projects - each shipped with measurable impact on performance and conversion.

Projects marked "Demo preview" are interactive showcase builds - not publicly published sites or work delivered under a client contract.

B2B SaaS PlatformDemo preview

PulseFlow

A conversion-analytics startup's marketing site paired with a live embeddable feedback widget and its own product dashboard - configure the widget and watch it update in real time.

Click into the live preview and try the widget yourself.

ReactTypeScriptRecharts
Bakery WebsiteDemo preview

Złota Skórka

A brand site for an artisan sourdough bakery, with a weekly menu and bread photography that update straight from the bakery's own dashboard.

Try it yourself in the live preview below.

ReactTypeScriptNode.js
Auto Detailing StudioDemo preview

Vault Auto Detail

A luxury detailing studio's booking site - an interactive multi-step price estimator with live totals, and a drag-to-compare before/after correction slider.

Click into the live preview and build a real estimate yourself.

ReactTypeScriptTailwind CSS
SaaS DashboardDemo preview

Northbeam Analytics

A real-time analytics platform rebuilt for scale, with a component system designed for clarity under dense data.

42% faster time-to-insight, 99.9% uptime post-launch.

ReactTypeScriptNode.js
Template - car workshopDemo preview

AutoSerwis

A car-workshop site template: services, pricing, a lightbox gallery, reviews and a contact form. Static Astro build - loads instantly.

Click into the live preview and scroll the whole page.

AstroTypeScript
Template - law firmDemo preview

Kancelaria Nowak

A law-firm site template: practice areas, team, fees, an FAQ and a GDPR-consent contact form. Restrained serif typography.

Click into the live preview and explore the sections.

AstroTypeScript
Template - driving schoolDemo preview

AutoSzkoła Kierunek

A driving-school template: courses, a vehicle fleet, a course walkthrough, package pricing, an FAQ and a sign-up form.

Click into the live preview and check the fleet section.

AstroTypeScript
Rated on Trustpilot

Trusted by teams who ship

Real reviews from real clients, pulled live from Trustpilot.

Write a review