I build custom-coded websites, web apps, and business automation for small companies, taking projects from design and implementation all the way through deployment, testing, and monitoring—so they don’t end up as a delivered ZIP file. I mainly run projects on Cloudflare and deliver performance-focused work (often 100/100/100 scores on Google mobile Lighthouse). My background spans IT operations and Microsoft 365 automation, and I use React/React Native with HTML, CSS, and JavaScript where it fits.…

Andrej Petrulák

I build custom-coded websites, web apps, and business automation for small companies, taking projects from design and implementation all the way through deployment, testing, and monitoring—so they don’t end up as a delivered ZIP file. I mainly run projects on Cloudflare and deliver performance-focused work (often 100/100/100 scores on Google mobile Lighthouse). My background spans IT operations and Microsoft 365 automation, and I use React/React Native with HTML, CSS, and JavaScript where it fits.…

Available to hire

I build custom-coded websites, web apps, and business automation for small companies, taking projects from design and implementation all the way through deployment, testing, and monitoring—so they don’t end up as a delivered ZIP file.

I mainly run projects on Cloudflare and deliver performance-focused work (often 100/100/100 scores on Google mobile Lighthouse). My background spans IT operations and Microsoft 365 automation, and I use React/React Native with HTML, CSS, and JavaScript where it fits.

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Skills

Experience Level

SEO
Expert
Web Design
Expert
HTML5
Expert
JavaScript
Expert
CSS
Expert
React JS
Expert
React Native
Expert
API
Expert
GitHub
Expert
Microsoft Office
Expert
PostgreSQL
Expert
UI
Expert
Copywriting
Intermediate
Node.js
Intermediate
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Language

Slovak
Fluent
English
Fluent

Work Experience

Founder & Full-Stack Developer at Tatra Byte
June 1, 2026 - Present
Hand-coded business websites and web apps on Cloudflare Workers and Pages, including a request-to-book reservation system for small guesthouses running on Workers, D1, and cron. Built React Native apps for Android and iOS and implemented automations connecting invoicing and other systems via APIs (including Microsoft 365/Graph). Projects follow fixed scope and pricing agreed before start; every delivery is deployed, tested, and monitored, with the code belonging to the client. Also includes several completed client websites and page deployments with on-page SEO and custom-written copy.
IT Specialist / Web & Software Developer at PC domа, Poprad
September 1, 2019 - Present
Started in IT support, network, and server administration for businesses, schools, and medical clinics, then moved into building software and websites for the same clients. Redesigned servispdoma.sk in React and Vite with full technical SEO. Built a printer-fleet monitoring SaaS with self-updating agents that report to service levels across multiple sites, plus automated Microsoft 365 and Graph administration across six schools. Focused on operations-ready delivery: endpoints are deployed, tested, and monitored; projects handed over with ownership of hosting and monitoring setup.

Education

Secondary technical education / IT degree (exact type not specified) at Stredná odborná škola technická, Poprad (secondary technical school, IT)
January 1, 2020 - January 1, 2024

Qualifications

Add your qualifications or awards here.

Industry Experience

Travel & Hospitality, Computers & Electronics, Financial Services, Software & Internet, Education, Healthcare, Professional Services, Retail, Telecommunications
    nasakaviaren.tatrabyte.sk - cafe and bistro site (spec build)

    A demo I built on my own initiative to show cafe and bistro owners what their site could look like. Not a client project - a sample.

    • Menu, gallery and a story-led layout
    • Brand-led design coded from a blank page
    • Hand-written HTML, CSS and JavaScript on Cloudflare Workers

    Live: https://www.twine.net/signin

    Nakupny Zoznam - shared shopping list app for Android and iOS

    My own app, designed, built and shipped end to end.

    • Real-time sync between everyone in the household
    • Offline-first storage, so the list works in the shop
    • Voice input and automatic sorting into categories
    • React Native and Expo on a Supabase backend
    • 4.6 stars on Google Play, also live on the App Store

    Product site: https://www.twine.net/signin

    nakupnyzoznam.app - product site for my own mobile app

    A landing page for an app has one job: earn the install before anyone scrolls.

    • Feature walkthrough, gallery, FAQ and store buttons in one flow
    • Copy and on-page SEO written by me
    • Hand-coded HTML, CSS and JavaScript on Cloudflare
    • Drives installs on both Google Play and the App Store

    Live: https://www.twine.net/signin

    cestazmeny.sk - website and copy for two financial advisors

    Two independent financial advisors with a real practice, a course programme and a signature event - and no clear way for anyone to tell them apart.

    • Structure, copy and design built around one clear path
    • Services, courses and the event in a single flow
    • Built on Astro, deployed over SSH, fully indexed
    • Easy for them to update without a developer

    Live: https://www.twine.net/signin

    REZERVA - request-to-book system for small hotels

    My own product, built for guesthouses and small hotels that are too small for a full PMS but lose money to commission platforms.

    • Rooms, availability and a request-to-book flow
    • Owner dashboard, automated e-mails, cancellation rules
    • Cloudflare Workers, D1 (SQLite) and cron jobs
    • Running in production 24/7 for paying clients

    Live demo: https://www.twine.net/signin

    servispcdoma.sk - full redesign for an IT services company

    Complete redesign for an established IT service company in Kezmarok that had been running the same site for years.

    • Clear service pages that lead to a phone call
    • Technical SEO: structured data, sitemap, Search Console
    • Built with React and Vite, deployed on Cloudflare
    • Copy rewritten from scratch

    Live: https://www.twine.net/signin

    tatrysimi.sk - five-language site for a mountain guesthouse

    Penzion SIMI is a family guesthouse and restaurant in Tatranska Lomnica that was giving away most of its bookings to commission platforms.

    • Five languages, one codebase
    • Rooms, restaurant, sport and events
    • Direct enquiry form instead of an OTA
    • Interactive flip-book version of the a la carte menu

    Hand-written HTML, CSS and JavaScript on Cloudflare Workers - no template, no page builder.

    Live: https://www.twine.net/signin

    barbershopmf.sk - custom-coded website for a barbershop

    Barber Shop MF, Kezmarok had no website at all - customers had to call just to find out opening hours or prices. Designed, written and launched in one week.

    • Services and price list
    • Gallery and opening hours
    • One-tap call and a booking link
    • Copy and on-page SEO written by me

    Hand-written HTML, CSS and JavaScript on Cloudflare Workers - no template, no page builder. Scores 100/100 on Google’s mobile Lighthouse.

    Live: https://www.twine.net/signin