Technologies I use to build web applications

Grok xAI I build production PHP web applications with Grok xAI chat, lead capture and admin tools for companies in Norway, Europe and Ukraine. OpenAI GPT Custom PHP applications with OpenAI GPT for product copy, support chat, SEO drafts and admin workflows. Telegram / WhatsApp / Viber bots I connect PHP sites to Telegram, WhatsApp and Viber: orders, leads, booking alerts. Built for Norway, EU and Ukraine.

Stripe & PayPal Checkout, invoices and bookings with Stripe and PayPal on licensed PHP CMS. Install help for Norway, EU and Ukraine. Nova Poshta API Delivery, tracking and city lists via Nova Poshta API inside Shop CMS. For stores that sell in Ukraine and ship from Europe.

Backend & Architecture Modular PHP 8 backends, MySQL, clean modules. I build CMS you can license per domain — Shop, Booking, Hosting. PHP 8 Production PHP 8 CMS: Shop, Booking, Faktura, Hosting. Licensed per domain. Direct support from the developer. MySQL MySQL for products, orders, users and news. JSON edition exists for demos without a database. Modular Architecture Turn modules on: shop, booking, news, SEO, mail. One ecosystem, licensed per client domain. Clean Code Readable PHP, clear names, no mystery globals. So you or the next developer can change the shop next year. Design Patterns OOP structure so AI agents and humans can extend Shop, Booking and Hosting without breaking checkout.

Performance & Data PageSpeed-minded PHP: cache layers, MySQL tuning, CDN. Built for Google in Norway and the EU. Redis Caching Redis in front of MySQL for catalogs, sessions and menus. Optional — I also ship MySQL and static cache. Advanced MySQL Optimization Indexes, slow-query hygiene, pagination. So the admin list of orders does not die after month three. Static & Dynamic Caching HTML snapshot for anonymous visitors, live cart for buyers. I keep both on one CMS. CDN Strategies Images and assets on a CDN, HTML from your domain. I keep cookies and checkout on origin.

Frontend & Experience HTML5/CSS3/JS that works on a phone. Admin panels and storefronts in the same product family. Responsive HTML5/CSS3 Valid HTML, mobile CSS, no layout that dies at 390px. PHP CMS storefronts and admin. JavaScript JS for carts, booking calendars, 3D product cards, chat widgets — on top of PHP, not instead of it. Admin & public UI/UX Admins that a shop owner can use: products, orders, SEO checklist, AI buttons. Public site stays fast.

SEO & Growth Technical SEO, Schema, hreflang, sitemaps, Open Graph. I build sites to be found — then you can run ads. Technical SEO Canonical URLs, hreflang, robots, llms.txt, sitemaps. Implemented in the product, not a one-off audit slide. On-page Optimization Titles, H1, internal links, image alt, language. The editor shows a checklist before you publish. Sitemap & Schema Dynamic sitemaps, Product/Offer, FAQ, Breadcrumb, SoftwareApplication, LocalBusiness. Generated by the CMS. Open Graph og:title, og:image, Twitter cards on CMS pages. WhatsApp and Telegram previews included. AI-assisted SEO Draft meta and product text with Grok or GPT inside admin. You approve. Schema and hreflang stay generated by code.

Security & Ops Hardening, validation, secure sessions, automated backups, cron, logging. Defensive work on systems I run. Vulnerability Hardening Escaping, prepared queries, CSP where I control HTML. Work on my own products and client licenses. Input Validation Server-side checks on checkout, login, reviews, newsletters. reCAPTCHA where abuse starts. Secure Auth Hashed passwords, sessions, separate demo and owner. Customer login in MySQL when the shop needs accounts. Automated Backups Database and file backups on a schedule. Restore is a support ticket, not a myth. Cron Automation Scheduled PHP: sitemaps, newsletters, auction timers, backup dumps. I set crontab on install. Logging Logs for failed mail, payments and PHP errors. Enough to debug, not a public dump.