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Senior Web Engineer · Celje, Slovenia

I engineer web platforms that stay fast as the business grows.

20+ years designing and building scalable, high-performance web platforms for businesses — including $10M+ ARR companies. Lead Web Engineer at Zebra BI, founder of Kiron.

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Line drawing of Aljaž Bizjak
Aljaž Bizjak — CET / UTC+1
  • 20+ years building for the web
  • $10M+ ARR companies trusting the platforms I build
  • Netko award-winning public-sector web work

01 / Now

What I'm working on

  • Since Dec 2021Contract

    Zebra BI

    Lead Web Engineer

    Leading web engineering for zebrabi.com — platform architecture, performance, checkout and CRM integrations, and the move from WordPress to a modern Astro stack on Cloudflare.

    • Astro
    • Cloudflare
    • Chargebee
    • HubSpot

  • Since Jun 2020Contract

    Nova Vizija

    Senior Web Engineer

    Senior engineering at one of Slovenia's leading IT companies — the same team where I started my career as a web developer in 2005.

    • Angular
    • DevExtreme
    • SQL Server

  • Since Jun 2012Founder

    Kiron

    Founder · Senior Web Engineer

    My own web studio in Celje: websites, online shops, web applications, UX/UI design and long-term maintenance for Slovenian businesses.

    kiron.si

02 / Career

Experience

  • — Present

    Lead Web Engineer

    Zebra BIContract

  • — Present

    Senior Web Engineer

    Nova VizijaContract

  • — Present

    Founder · Senior Web Engineer

    KironFull-time

  • —

    Web Developer

    Nova VizijaFull-time

03 / Tools

Stack & expertise

Core skills

  • TypeScript
  • JavaScript
  • Angular
  • PHP
  • HTML5
  • CSS
  • Sass
  • SQL
  • Microsoft SQL Server
  • MySQL

Front-end & frameworks

  • Astro
  • Angular · DevExtreme
  • Design tokens · Style Dictionary
  • Modern CSS · OKLCH colour systems
  • Figma-to-code pipelines

CMS & e-commerce

  • WordPress · PHP
  • Bricks · Oxygen Builder
  • Chargebee checkout & webhooks
  • HubSpot · Make automations
  • GA4 · A/B testing

Data & back-end

  • SQL Server · stored procedures
  • MySQL
  • REST & MCP integrations
  • e-SLOG 2.0 e-invoicing

Infrastructure & security

  • Cloudflare Pages & Workers
  • cPanel · LiteSpeed · QUIC.cloud
  • Mail servers · SPF / DKIM / DMARC
  • WordPress security hardening
  • Web performance tuning

04 / Awards

Recognition

  • WinnerNetko 2008

    Website of the Information Commissioner of the Republic of Slovenia

  • FinalistNetko 2009

    Website of the Human Rights Ombudsman of the Republic of Slovenia

05 / Contact

Have a platform that needs to scale? Let's talk.

[email protected] LinkedIn Kiron