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Custom fleet and transport-order management system for a Polish transport company, developed continuously since 2021. Scope: web management panel, driver mobile app, fast browsing of a large order history, and integrations with the Trans.eu freight exchange and Cargo Partner. The system replaced spreadsheets and phone-based coordination with one tool the whole team works in.

Custom platform for a Polish printing house, developed and extended since 2016. An online store with product configurators is connected directly to the company's production management: a customer's order becomes a production job instantly, with no manual re-entry of specifications. The system covers the storefront, cart and checkout, order processing and production planning.

Mobile app built for Viessmann, a heating technology manufacturer (2015), in cooperation with Tomeson and Art-X. Installers register newly installed boilers and other heating devices in about 30 seconds instead of filling in paper forms: they photograph the invoice and enter or scan the device's serial number with the phone camera. Data goes through a dedicated API to Viessmann's servers for approval, and the installer can track the registration status live. One codebase (AngularJS, HTML5, CSS3, Cordova) for Android and iOS.

Mobile app for orthodontic clinics using Nimro Dental products, built for the agency Interakcja.pl (2015). Clinics browse their order history and statuses and create new orders in a few taps: they select teeth on an interactive chart and attach photos of the case instead of describing it over the phone, which eliminates mistakes. Push notifications tell the clinic when an order is ready. Available on Android and iOS (Cordova, JavaScript, HTML, CSS).

Multi-module system for a media company managing thousands of advertising carriers (2022). The office knows immediately where and on which billboard each poster should go; field crews confirm completed jobs from their phones and a ready report lands on the server. Planning, booking and monitoring of outdoor and indoor campaigns happens in one panel instead of Excel sheets, with reporting, deadline alerts and role-based permissions. Tech: Angular, Capacitor, NG-ZORRO.

Digital accessibility audit for the Regional Police Headquarters in Katowice, Poland (2021), covering the "?l?ska Policja" mobile app used across the region and the institution's website. We assessed both against WCAG guidelines with a transparent methodology, giving the client hard evidence of compliance with Polish accessibility law and a prioritised list of concrete, measured issues to fix. The client issued a written reference recommending desi9n.pl as a professional and trustworthy contractor.

Business website for backendworks.com (2021), a European IT team selling its services on the demanding US market. Numbers and charts build credibility at first glance, project presentations showcase competence, and a contact form with automatic notifications supports the whole sales process. SEO-optimised, responsive and easy to edit, with language management in the admin panel. Tech: HTML, CSS, Vue.js.

Mobile app for the cowjem.pl nutrition service (2014). Users scan a product's EAN barcode to see its nutritional values, ingredient warnings (e.g. E-numbers), ratings and comments, and build shopping lists they can share with family. Login via Facebook or Google. Released in a paid version and a free version with AdMob ads, so the app earned money and attracted users from day one. Tech: PHP, MySQL, JavaScript, Cordova. The client issued a written reference praising reliable, on-time work.

Educational mobile app and website (2014) telling the story of 52 days in Warsaw between 15 August and 5 October 1939. Each day is a short "postcard" with a photo, a position on a historical map and attachments, delivered on the same calendar date more than 80 years later. The app uses GPS and the camera so users can compare archive photos with their own, and syncs with the wrzesien39.waw.pl portal through a dedicated API. Used in schools, homes, libraries and museums. The client issued a written reference.

Rental listings website for selected New York City neighbourhoods (2019). Tenants see current apartment and office offers immediately, without registering or logging in; each listing has a photo gallery and a contact form, and property owners have a dedicated section to reach the brokers. One management panel serves several portals, and the site works like an app on mobile without taking space on the phone. Tech: HTML, CSS, PHP, Bootstrap.

Multilingual business website for a web design and development company operating in Luxembourg (2021). The site sells the team's expertise through visual case studies, reaches clients on any device thanks to a responsive layout, is optimised for local search phrases, and sends every enquiry straight to the inbox so no lead is lost. Tech: HTML, CSS, PHP, Vue.js.

App and website for MRDP, the Cycling Marathon Around Poland held every four years, plus related cycling events. Fans follow riders live: participants send SMS updates from the route, which go to a web service and appear in the app together with the start list and rider profiles. Works as a PWA straight from the website, no app-store download needed, and the organiser updates event content without a developer. Tech: Angular, HTML, PWA, WordPress, JavaScript, SASS.

Real estate portal for rental listings across New York City's five boroughs (2017). Private owners and professional brokers add listings with a detailed form and manage them from their account panel. Renters use an advanced search (price, area, parking, utilities, appliances) and browse full galleries and 3D photos comfortably on their phones, so they can decide without blind viewings. Tech: HTML, CSS, Angular.

Hybrid mobile app built for Colliers International Poland (2013) for companies looking for office space. Users search offices across Poland by city, area, status and other criteria, use geolocation to find nearby buildings, browse details and photos of over 1,000 office buildings and save favourites. One implementation covered both Android and iOS, with the same experience on phone and tablet. Tech: Angular, HTML, CSS, JavaScript, Cordova.

Business website for SolidBau GmbH (2021), an Austrian renovation and construction company working across Europe. A clear service offer shows clients exactly what they pay for, and an extensive gallery of residential, commercial and infrastructure projects convinces better than a sales call. Responsive, SEO-optimised and connected to social media. Tech: HTML, CSS, WordPress. The client issued a written reference praising the design and functionality.

Business website for SolidHaus (2021), an Austrian renovation and construction company offering ready-made product solutions. Clients configure services and products, such as window awnings, to their exact preferences before asking for a quote, and browse the full product catalogue and project gallery on any device. The company updates the offer and gallery itself, without waiting for a developer. Tech: HTML, PHP, JavaScript, SASS, WordPress.

Mobile app for the University of Economics in Katowice, Poland (2014). Candidates, students and graduates each receive the news relevant to them, pulled directly from the university website via RSS integration with its CMS. Group push notifications (Apple Push Notifications, Google Cloud Messaging) announce new content, users can set personal event reminders, and the app is multilingual for international students. Tech: HTML5, CSS3, AngularJS, Cordova.

Mobile app built for Colliers International Poland (2013) for logistics companies looking for warehouse space. Users search over 160 warehouses across Poland by region or nearby via GPS, filter results, view details and photos, save favourites to compare later, contact the responsible agent directly and download the latest warehouse market report. Tech: Angular, HTML, CSS, JavaScript, Cordova.

Accessibility remediation of the existing website of Wodoci?gi Raciborskie, the water utility serving Racibórz, Poland, delivered in two phases. We corrected the HTML structure and improved the CSS so the site meets WCAG requirements, making content easier to access for visually and hearing-impaired users and shortening the time needed to report a failure. The client received a complete accessibility report documenting compliance with Polish law, and issued a written reference recommending desi9n.pl.