Bruno Kos
Full-Stack Developer
WordPress & PHP developer with 1,500+ projects delivered and 7+ years solving complex plugin, theme and server issues, now also building Python, AWS and AI tools.
4.99/5
overall rating
521
projects
182
customers
Location
,
Languages
Croatian, English, French, German
Member since
03 Feb, 2015
11 years
Typical projects
Full Website Builds, Plugin Development, Theme Development
I've been building and fixing WordPress sites since 2009, with 1,500+ projects delivered for clients worldwide, including custom themes and plugins, third-party integrations, and rescues of broken or poorly built sites. For over seven years I worked as a WordPress Technical Support Specialist at OnTheGoSystems, the company behind WPML. My job was diagnosing hard problems across WordPress, PHP and server environments: plugin and theme conflicts, configuration issues, and multilingual setups. That means I'm fast at finding the real cause of a problem, not just patching symptoms. Since 2026 I've also worked as a software engineer on internal data tooling (Python, MySQL, PostgreSQL, AWS), and I build AI and cloud projects with the Claude API, RAG and Terraform. If your project needs WordPress connected to an API, an AI feature, or a more reliable hosting setup, I can cover that too. I communicate clearly in English and German, scope work honestly, and explain technical decisions in plain language so you always know what you're paying for and why.
Skills
5/5
Excellent job, very responsive and flexible, delivered everything on time as promised. Would definitely work with Bruno again.
Feb 08, 2019
5/5
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.
Jan 29, 2019
5/5
Bruno is awesome, worked with him several times now, couldn't be happier, gets work done at a fair price, quickly and efficiently!
Dec 10, 2018
5/5
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.
Dec 04, 2018
5/5
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+
Oct 26, 2018
5/5
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.
Oct 24, 2018
5/5
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.
Oct 22, 2018
5/5
Quick, responsive and accurate!
Oct 16, 2018
5/5
Great work; highly recommend!
Oct 02, 2018
5/5
Could not be more pleased with every aspect. Thanks Bruo!
Sep 19, 2018