Custom Websites and Webshops for Your Business

Fast, modern and built to rank on Google - plus custom web apps and support after launch, for clients across Croatia and beyond

Get a quote Our services
Webshops
Websites
Web Apps
SEO Optimization
Responsive Design
Fast Loading
30+
Satisfied clients
50+
Projects delivered
< 2 s
Page load time

Website, Webshop & Web App Development

Choose the service that best fits your needs

Websites

Professional presentation sites tailored to your brand

  • Business & blog sites
  • Responsive design
  • SEO optimization
Learn more

Webshops

Online stores with advanced features and secure payments

  • Secure payment methods
  • Inventory management
  • Admin dashboard
Learn more

Web Apps

Custom software for automation and business management

  • Custom business apps
  • Dashboards & CRM
  • Regular maintenance
Learn more
Application postponed to 17 November 2026

Anchored Prices and Machine-Readable Price Lists (CSV/XML)

Existing requirements for anchored prices and machine-readable price lists take effect on 17 November 2026. Read the guide to learn who is affected, what the files must contain, and how to automate publication.

Read the guide

Responsive Web Design That Fits Every Device

We build every website mobile-first, so it looks and works flawlessly on phones, tablets and desktops. Google indexes the mobile version of your site first, and most visitors arrive on a phone.

DesktopTabletMobile
  • Mobile-first approachDesign starts on the phone, then scales up to larger screens.
  • Fast loadingOptimized images and clean code for better Core Web Vitals and SEO.
  • Tested on real devicesWe check the layout across browsers and screen sizes.
See our website development service
ALTEQ projects displayed on monitor and mobile device - responsive web design

Our Work

Take a look at some of our recent projects

ALTEQ Shop - online store for 3D printed and laser cut products

ALTEQ Shop

Online store for 3D printed and laser cut products

Visit
Acta Digitalis - digital office for lawyers

Acta Digitalis

Digital office for lawyers

Visit
MJJ - law firm website from Zagreb

Law Office

Website for a law firm from Zagreb

Visit
Auto DASOVIĆ - webshop for car parts

Auto DASOVIĆ

Webshop for car parts

Visit
Noval - LED lighting webshop with advanced features

Noval

LED lighting webshop

Visit
Koka Shop - online store for a popular Instagram page

Koka Shop

Online store for a popular Instagram page

Visit
Solarko - online store for solar equipment

Solarko

Online store for solar equipment

Visit
Visual Memory - photographer portfolio site

Visual Memory

Photographer portfolio site

Visit
AI PC Builder - AI agent for PC component assembly

AI PC Builder

AI agent for PC component assembly

Visit
FOS ERP system for business management

FOS ERP System

ERP system for business management

Pub Quiz Velika Glava - modern quiz hosting application

Pub Quiz Velika Glava

Modern quiz hosting application

✨

Your next project

Don't see your project on the list?
Let's build it together.

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Technologies We Use

We work with the latest technologies for optimal results

React - JavaScript library for building user interfacesReact
JavaScript - programming language for web developmentJavaScript
HTML5 - markup language for web pagesHTML5
CSS3 - styling language for web pagesCSS3
PostgreSQL - advanced database management systemPostgreSQL
.NET - development framework for web applications.NET
React - JavaScript library for building user interfacesReact
JavaScript - programming language for web developmentJavaScript
HTML5 - markup language for web pagesHTML5
CSS3 - styling language for web pagesCSS3
PostgreSQL - advanced database management systemPostgreSQL
.NET - development framework for web applications.NET

From our blog

Practical guides on webshops, pricing and website development

New · Black Friday 2026

Black Friday 2026 and the new pricing rules

Three prices on a product card, the correct discount percentage and technical webshop preparation.

Read the article →
Regulation 2026

Anchored price and machine-readable price list

Who the obligation applies to, which data must be published and how to automate the CSV/XML price list.

Read the article →
Guide

Website and webshop development guide

A detailed guide covering the entire process - from planning to launch.

Read the guide →

Why Choose ALTEQ?

Reasons why our clients trust us

30+ satisfied clients

Our clients come from various industries - all are satisfied with the results

Fast sites with results

We optimize for speed - pages load in under 2 seconds

Support after launch

We're not just here for the build - we support you after your site goes live

Who We Are

ALTEQ is a digital agency specializing in custom websites, webshops and web applications. Our approach combines modern design, top performance and SEO optimization to ensure your business achieves a leading position in the digital world.

Based in Velika Gorica, we serve clients across Croatia and Europe. Whether you need a website, a webshop or a custom application - we're here to help you achieve your digital goals.

Web Development E-commerce SEO Optimization UI/UX Design

Ready for change?

Let's start your project today! Contact us for a free consultation.

Contact us

Start Your Project

Let's stay in touch and build something remarkable together

Our Contacts

Address

Ulica dr. Lavoslava Ružičke 42, 10410 Velika Gorica, Croatia

Why choose us?

  • Custom solutions tailored to you
  • Modern and responsive design
  • Search engine optimization
  • Regular support and maintenance