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 2018-05-24T00:36:28Z 5
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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 2018-04-19T17:52:33Z 5
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Bruno was a great person to work with. I am about to launch my business Ancona Wellness www.anconawellness.com and I realized there was something important missing on the homepage that required coding. He helped me overnight to achieve what I had envisioned, and the end product just as I visualize it. Thank you and I wouldn't hesitate to work with Bruno again in the near future.

Diana Ancona
Bruno Kos 2018-01-17T21:37:22Z 5
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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 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
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Alex Schad
Bruno Kos 2018-09-19T18:01:51Z 5
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Could not be more pleased with every aspect. Thanks Bruo!

Priscilla Christian
Bruno Kos 2018-09-19T17:59:16Z 5
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Austin Price
Bruno Kos 2018-09-07T11:23:57Z 5
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Always a pleasure and great work!

Marc Apple
Bruno Kos 2018-08-23T13:20:21Z 5
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Bruno continues to be a valuable resource to work with. Thank you!

Amit Bhalla
Bruno Kos 2018-07-27T14:14:57Z 5
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Sharon Schanzer
Bruno Kos 2018-07-26T19:49:51Z 5
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Marc Apple
Bruno Kos 2018-07-25T02:29:45Z 5
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Great job as usual! Thank you, Bruno!

Diana Ancona
Bruno Kos 2018-07-24T15:51:15Z 5
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Geoey Cook
Bruno Kos 2018-07-12T07:48:33Z 5
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Dave van Oers