WordPress theme developer

Since I started working with WordPress in 2009, I’ve successfully completed countless projects, mostly theme creation/customization work.

If you want to meet me “in person”, make sure you check my interview with Matteo Duò, recorded for our “Changing lives” series!

A bit more…

  • Working with WordPress since 2009.
  • WordPress core contributor (as of version 4.4.)
  • Completed hundreds of site migrations
  • Modified and created hundreds of WordPress themes
  • Familiar with mailing systems (MailChimp, etc)
  • Expert in multilingual WordPress websites (WMPL)
  • Fluency in English, both in written and spoken communication
  • Check my bbird.me blog for quick WordPress theme development tips, or my Codepen profile

When can you reach me?

I live in UTC+1 time zone (Zagreb). I am reachable from 8 am – 11 pm UTC+1, which means that I am available in real-time for clients from all USA, European and Australian/Asian time zones.

In what language?

English, Croatian, Serbian, Bosnian, Montenegrinan and German (learning of the latter in progress so don’t mind grammar mistakes:) )

Where am I?

Born and living in beautiful and even more beautiful Croatia. I live in the northern part of the country, in Zagorje, somewhere among these hills, very close to Ivanščica mountain.


I hold master of informatics education degree, obtained at Faculty of Organization and Informatics

In my free time, I…

  • Run races, competing on the track on national level.
  • Read novels, very passionate about 19th century novels (Russian, German, French…).
  • Listen to some music.

Customer reviews

Bruno Kos 2018-10-22T20:58:55Z 5
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Bruno did a fantastic job from start to finish. He tackled the project in a really logical way and was extremely responsive. He clearly has an advanced level of understanding and expertise with Wordpress and Woocommerce. I look forward to working with him again on future projects and wouldn't hesitate to recommend him to others.

Roddy McLean
Bruno Kos 2018-05-24T00:36:28Z 5
Project rating:

Bruno was incredibly helpful in achieving our goal. He found a faster, better, and more cost-friendly approach to customizing our theme than we anticipated. He was clear and prompt with his communication and made sure we got exactly what we wanted.

Kat D'Anna
Bruno Kos 2018-01-17T21:37:22Z 5
Project rating:

Excellent, excellent, excellent. Extremely patient, absolutely knows what he is doing, has good suggestions, even researched plugins and other things for me. All around did a wonderful job. Very friendly, and got work done at a good pace. He even did some things for me that I am sure were not part of the project but he did not complain or say no to me once. Super job, super guy A+

John Mattar
Bruno Kos 2019-02-08T16:04:12Z 5
Project rating:

Excellent job, very responsive and flexible, delivered everything on time as promised. Would definitely work with Bruno again.

Greg Cox
Bruno Kos 2019-01-29T16:01:43Z 5
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Bruno did another great job fixing some items on our Wordpress site. He was very prompt, thorough, helpful and made sure everything was done to our specifications. I highly recommend Bruno for any Wordpress help.

Tony Valaitis
Bruno Kos 2018-12-10T21:40:50Z 5
Project rating:

Bruno is awesome, worked with him several times now, couldn't be happier, gets work done at a fair price, quickly and efficiently!

John Mattar
Bruno Kos 2018-12-04T15:12:38Z 5
Project rating:

Excellent job, created the exact outcome I was looking for. Made all revisions that I requested along the way and even re-did some of his work at no extra charge after I mentioned I had a license for a plugin that could replace several others. Would definitely work with Bruno again.

Greg Cox
Bruno Kos 2018-11-16T11:24:18Z 5
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Sigurd Blom Rossel
Bruno Kos 2018-11-07T18:41:43Z 5
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Kevin Mata
Bruno Kos 2018-11-01T20:19:35Z 5
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Geoey Cook
Bruno Kos 2018-10-26T14:34:01Z 5
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Bruno is unreal! He does amazing work, has great communication, is very helpful, extremely patient, and answers all questions. This is now the second time I have had the pleasure of working with Bruno and I could not be happier. He will always be my go to for theme/design projects going forward! A+

John Mattar
Bruno Kos 2018-10-24T16:37:00Z 5
Project rating:

One of the best technical person I have ever worked with. Endless patience and always with a smile. If I could give him 10 stars, I would. Thank you, Bruno, you are the best.

Iris Mishly
Bruno Kos 2018-10-16T19:20:29Z 5
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Quick, responsive and accurate!

John Morris
Bruno Kos 2018-10-02T20:02:10Z 5
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Great work; highly recommend!

Steve Kirschner
Bruno Kos 2018-10-02T17:16:29Z 5
Project rating:

Alex Schad