Hi! I'm igor jelen.

web developer

Contact me, I'm available.

My Skills

I have skills in design, coding and programming. I'm good at modern workflow as well.

Front End

  • Excellent experience with HTML, CSS (SCSS, CSS-in-JS) and JavaScript (jQuery, ES6, npm)
  • Good knowledge of Typescript
  • Very good knowledge of React
  • Very good experience with react-admin framework for building single-page web applications
  • Exposure to Next.js and Netlify
  • Strong responsive web design skills using CSS frameworks (Foundation, Bootstrap), or React libraries like Material-UI or styled-components. Ability to hand-code layouts as well

Back End

  • Excellent experience with Firebase (Firestore Database, Storage, Authentication, Hosting, Serverless Functions)
  • Excellent experience with WordPress administration
  • Excellent experience with WordPress custom theme development (ACF, WP_Query, Local by Flywheel for local development…)
  • Very good knowledge of PHP (custom theme for WordPress, exposure to Laravel) and MySQL
  • Good knowledge of PHP object-oriented programming
  • Very good experience with ExpressionEngine (10+ websites)
  • Basic familiarity with hosting platforms, control panels, FTP, SFTP, SSH, basic Linux command line usage.


  • Very good experience with command-line tools and workflow tools (git bash, npm, Grunt, Gulp, Webpack, Firebase CLI...)
  • Excellent experience with Visual Studio Code
  • Excellent experience with Firefox (or Chrome) Developer Tools
  • Very good knowledge of version control with Git and GitHub
  • E2E testing with Cypress


  • Very good experience with typography (using Adobe InDesign)
  • Very comfortable with visual design and image-editing software (Photoshop, Illustrator, InDesign, Experience Design, Figma)
  • Ability to hand-code responsive web layouts
  • Very good experience with logo design

My Work

Here is a selection of my web and print work.


  • React
  • Firebase
  • react-admin

A single-page web app that tracks the expiry date of a list of items and warns a user. The app is aimed at retail shops and is already successfully used in production. It both reduces the time spent on date-checking and makes the task more efficient.

Request a demo

Secondary School Campus Križevci

  • Wordpress
  • Responsive web design
  • Ajax

Custom WordPress theme with 6 custom post types, ACF plugin, responsive web design, Ajax

I’ve been maintaining and administering the website for more than 10 years

Visit the website

Radio Vrbovec

  • ExpressionEngine
  • Responsive web design
  • Ajax

A website for a radio station in Vrbovec, Croatia:
custom responsive web design, ExpressionEngine integration, client training, Ajax

Visit the website Larger image

Secondary School Vrbovec

  • ExpressionEngine
  • Custom web design
  • Ajax

Custom design with ExpressionEngine 2 integration. I maintained and administered the website for 6 years.

Visit the website

The Logo and the enrolment poster for the Secondary School Vrbovec

  • Adobe InDesign
  • Adobe Photoshop
  • Adobe Illustrator
Download the pdf

Monograph on Secondary School Vrbovec

  • Adobe InDesign
  • Adobe Photoshop

Designed and coedited the monograph on the local high school using Adobe InDesign and Photoshop

Download the excerpt

Contact Me

I live in Dublin, IR and I'm currently looking for a middle level full stack or front end web developer role.

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