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 2017-10-25T20:40:00Z 5
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Bruno was extremely patient with me, and went above and beyond what I expected. His knowledge is vast. I highly recommend him.

Jay Hanna
Bruno Kos 2017-09-15T21:10:21Z 5
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Bruno is an excellent developer with effective skills and timely communication.

Trevor D
Bruno Kos 2017-08-26T13:12:47Z 5
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Bruno is an amazing developer who enables me to provide services to my clients that I wouldn't otherwise be able to provide. He's fast, flexible, efficient and a great communicator.

Sharon Schanzer
Bruno Kos 2017-07-12T17:14:08Z 5
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This is the fourth project now that I have worked on with Bruno. Always responsive, very knowledgeable, and collaborative. Thanks Bruno!!

Kevin Mata
Bruno Kos 2017-06-22T14:33:05Z 5
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Bruno completed the project on time, on budget and provided great, professional service. A pleasure to deal with.

Tony Valaitis
Bruno Kos 2017-04-28T16:37:32Z 5
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Bruno is awesome! He makes working virtually a smooth experience. Great communicator, and the best part is he's very friendly so it makes working on a project with him much more personal. Fantastic talent!

Joe Rice
Bruno Kos 2017-04-19T16:21:13Z 5
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All work was completed in a timely fashion and done correctly.

Joey Bordelon
Bruno Kos 2017-03-27T17:12:00Z 5
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Bruno is very detail oriented, and smart regarding the coding of our site for a new theme. We have a huge amount of content and he made sure every transition was made. He did extra work to design our header which turned out very well. He is easy to work with and very prompt with his communication. I'm very pleased with our site, and how quickly he got it done. I highly recommend using Bruno!

Lisa Carter
Bruno Kos 2017-02-21T20:47:08Z 5
Project rating:

Bruno completed all tasks within the allotted time-frame and with a very high level of expertise. All requested changes and corrections were implemented in a timely manner. We were very pleased with our experience working with Bruno and will not hesitate to appoint him for further projects.

Jody Espina
Bruno Kos 2017-02-17T20:44:11Z 5
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Excellent job as usual!

Marc Apple
Bruno Kos 2017-02-14T11:01:01Z 5
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Thanks for another outstanding effort from Bruno Kos!

Lee Reeves
Bruno Kos 2016-11-23T08:04:41Z 5
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Bruno was excellent in every way - highly responsive, completed the project well within the specified timeframe, and good at coming up with creative solutions to awkward problems.

Shoshana Maraney
Bruno Kos 2016-10-13T19:16:51Z 5
Project rating:

Great Job! Bruno knows what he's doing. X-Theme is complex. He got the job done quickly and efficiently. He even coached me on tweaking the css to suit the clients' needs.

Kevin Propper
Bruno Kos 2016-09-30T13:38:30Z 5
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So fast, so willing to work hard. And willing to refer out if anything is out of scope for him. I will use Bruno again. He really saved me from having to cut a client loose.

Travis Loring
Bruno Kos 2016-07-20T22:32:27Z 5
Project rating:

As usual, exceedingly patient and precise worker, this time staying up late and working with a fairly seat-of-the-pants specification, iterating with me on chat and getting the job done after midnight his own time zone. Again, excellent and would work with him again.

Hans Dockter