About Me

Hi, my name is Jonathan.

I am a programmer from Cape Town, South Africa with a passion for open source software.

Jonathan Bossenger
Jonathan Bossenger (picture courtesy Florian Ziegler)

Lead Developer at Castos

Three years ago I was contacted by Craig Hewitt, a startup founder, about a new product he was building. Craig had recently purchased the Seriously Simple Podcasting plugin and it’s add-ons from Hugh Lashbrooke. With a background in Podcasting, Craig wanted to build a SaaS that would provide beautifully simple podcasting hosting and related services to the users of Seriously Simple Podcasting. Thus, Castos was born.

Today Castos has grown from just Craig and myself to a distributed team of five, the plugin is used by over 20 000 podcasters around the world, with thousands of active customers using the Castos service.

Expert at Codeable

Since August 2016 I have been solving technical problems for clients from around the world through Codeable. I focus on plugin development (both custom plugins and plugin extensions) as well as theme development, specifically adding custom functionality to themes via child themes or plugins. My favourite type of project is building custom API integrations.

Writer, Blogger and Podcaster

Besides this blog, I also write for the WordPress.com Go blog, helping small business and entrepreneurs build their own business websites on WordPress.com, grow their audience and be successful. I’ve also contributed to the Jetpack blog as well as Smashing Magazine and WP Tavern.

In my spare time I host a small WordPress focused podcast where I interview folks from all over doing interesting things with WordPress. If this is you, let’s chat.


Whenever the opportunity provides, I try and speak at local events about various topics including development, freelancing, PHP, WordPress, and Laravel. So far I have spoken at WordCamp Europe (2019), WordCamp Cape Town (2016, 2018), WordCamp Johannesburg (2018, 2019) and PHP South Africa (2017).

WordPress contributor

WordPress has given me so much, so I do what I can to give back. Besides the time I put into the Seriously Simple Podcasting plugin and it’s add-ons, which is kindly sponsored by Castos, I have also released a few plugins of my own on the WordPress plugin repository. I’m a community deputy and I’ve been on or leading the WordPress Cape Town organising team for the past three years. I also co organise the WordPress Cape Town meetups with fellow organisers, Bruce Lunnis and Kim Gush.


Because most of my work is done in a ‘white label’ fashion, I don’t have an online portfolio. However, here are some kind words from clients and colleagues I’ve worked with over the years.

Craig Hewitt

We had a complex scenario where we were looking to add to an established WordPress plugin and create a standalone SaaS application to interface with it. As the developer for this project Jonathan was great at helping me understand some of the risks and potential pitfalls as well as how to best architect the changes that we were looking to make. We have now successfully launched our new product and our users are loving it. The quick adoption rate and low support burden with a new product would not have been possible without a seasoned developer behind the product creation efforts. I consider myself very lucky to get to work with such a nice, considerate, and extremely talented developer as Jonathan.

Craig Hewitt, Owner, Seriously Simple Podcasting

Frode Håkonsen

I had a rather tricky challenge on a client site which needed some JavaScript magic and I have noticed in the Divi forums on Facebook that Jonathan was very knowledable and positive. So I reached out to him to hear if he could help me out. He built me a very handy solution that worked without any hiccups right away.  It is always great to experience when your expectations are met 100% and I can highly recommend Jonathan

Frode Håkonsen, Webfreak at Wayout.no

Nicholas Xavier

Working with Jonathan has been an awesome and smooth experience. He is able to grasp concepts quickly and willing to help find simple solutions making sure he is able to create what we envision.

As a digital agency owner it is sometimes hard to find reliable freelance developers, but Jonathan has proven continuously that he is dependable and hard working. He produces great work and a great guy to work with.

I would recommend his services to anyone.

Nicholas Xavier, Co-owner, Aglet

Eileen Lonergan

I truly enjoy working with Jonathan.  He is personable, smart, and organized.  Jonathan is extremely well skilled and thorough. His style of communication made the process feel like a true collaboration.  I am actively looking for new projects so we can work together again.  I recommend Jonathan highly, you are lucky if he is on your team.

Eileen Lonergan – eileenlonergan.com

Marcus Boyd

* * * * * 5-STAR REVIEW * * * * * Jonathan just created an outstanding custom Divi build for us. We provided a non-Divi site to be replicated, and the result was perfect, complete with overlapping sections for great visual effects using Divi’s animated images. He said, “You think it, I’ll build it!” Now we say, “You believe it, he’ll do it!”

Macus Boyd, Personal Trainer Insurance.

Carol Wood

I am very happy with my new Heartbizz website. Thanks for your input and listening to what requirements I needed. I am now happily able to manage my own site as the needs required. A very good and professional service. I will definitely recommend your work to others. Thanks again

Carol Wood – Owner, Heartbizz.

Most recent Codeable reviews

  • Project Rating:

    It was a true pleasure working with Jonathan. He was incredibly timely and maintained excellent communication throughout the project. He completed my requested custom API integration flawlessly. I would highly recommend Jonathan for Wordpress customization and API builds.

    - Ashlynn Henkel

  • Project Rating:

    Jonathan is the type of developer that you want to have by your side. Knowing he's in your corner makes projects go smoothly without too much stress. He gets the job done and even when things get a bit challenging you can be sure that he'll handle it. I will definitely work with him on future projects.

    - Anchen le Roux

  • Project Rating:

    Went above and beyond the initial task. Beautiful code! Thank you!

    - Lindsay Landis

  • Project Rating:

    Jonathan did a great job!

    - Lorraine Brooks

  • Project Rating:

    He deserves no less. Excellent work, clear communication and very easy to work with.

    - Kevin Mendes

Get in Touch

If you want to chat, feel free to find me on any of the following networks.

Alternatively, email me if you want to discuss a project, have a question, or just want to say hi.

If anything you've found on this site was useful to you, and you want to say thanks, you can always buy me a coffee.