About Me

I am a freelance software developer and consultant based in Berlin working for local and remote clients. I help startups turn product ideas into working software and enjoy hands-on software development.

Having worked for small and large companies in the US, Europe and Asia and in different positions from sysadmin to developer, manager and CTO, I now do what I enjoy the most… building great software and products with driven teams of excellent people, focusing on getting things done.

What’s important to me is

  • being self sufficient and reliable
  • working with smart people
  • constant iterative improvement
  • being driven by curiosity and fun
  • pragmatic approaches
  • trust and responsibility
  • learning from colleagues and passing on what I know

I am a freelancer. If you want to work with me, send me an email.


I focus on internet applications, agile development, e-commerce, marketplace platforms, database optimization, content management and IT-infastructures. Over the years I have had the chance to gain experience with distributed and remote teams for extended amounts of time both as a developer and as CTO. Contact me if you are looking for advice about building a distributed development team or are thinking about switching to one. If you’re not thinking about it yet, I suggest giving it a test drive. Read the book REMOTE by 37signals to learn more about it.

Project Portfolio



I was brought in to architect and build a same day delivery platform (read: Uber for couriers) for the Web, iOS and Android. For added difficulty, the platform had to work as a drop-in replacement for an existing legacy solution. We went from scribbles and Post-It notes to setting up a multi-team agile process (a scrum of scrums like approach) to building the platform using Rails and AngularJS and delivering the first working release. You can now use www.liefery.com in Germany it for ultra-fast or ultra-convenient deliveries or to send flowers to your girlfriend.



Check out the German price comparison site www.papersmart.de. I joined Papersmart in 2011 as co-founder, CTO and hands-on developer. We built a full custom e-commerce marketplace in Rails from scratch with many unique features like a shopping cart based price comparison, automatic detection of equivalent products and splitting orders between vendors to save more money. The site is optimized for speedy user interaction and has many features you would like to see in most e-commerce sites as our customer reviews show.



I joined BizSphere AG as a co-founder and first developer in 2006, responsible for shipping an ambitious product idea to a global enterprise giant within a few months. We did! And soon after that I found myself onboarding and coordinating developers located across 12 timezones, negotiating requirements with enterprise IT-departments while writing code in Java and Rails and automating infrastructure deployments in the cloud.

Freelance Projects

Other freelance projects include:

  • Customer service website backend for O2 Germany
  • Core banking system for DiBa Austria
  • Mortgage consulting application for Sparkasse Germany
  • An AJAX-style project management application for Compaq in 1999 (Yes AJAX in 1999! Think single page app in IE4 without XMLHttpRequest and a JSON-y data protocol before JSON existed)

What people who work with me say

There were several traits of Simon that impressed me from the start and that I grew to rely on over the years. First of all, Simon has an immense competence in enterprise java, frameworks… short: he was the master of our entire software backend. As a colleague, I valued his reliability and willingness to help out and be a team player. Being very organized and proactive at the same time, he was a constant driver of improvement in our organization.

Not only did we trust fully in his reliability and integrity as a colleage and co-founder, but we also elected him into our supervisory board where he represented the founder team for many years.

Stefan Broda, co-founder @bizsphere.com

Simon is a very driven and motivated professional. As project and requirements manager you could always count on him, swiftly solving issues, regularly communicating with the client and maintaining a good morale amongst his team members.

Andres Nerlich, colleague @o2 and @bizsphere.com

You can also find me on:

Please email me if you are interested in working with me.