About Me | Blaubart.com software engineering

Christian Semmler

Senior Software Engineer

Welcome to my website! I'm a software engineer specialized in backend and systems development. I'd describe myself as being highly pragmatic and passionate about my work, while readily taking on responsibility whenever the opportunity arises. In my free time I write about software on my blog, support animal welfare and enjoy gardening and cooking. Check out the links below!

GitHub Rabbits

What I do professionally

I have more than 10 years' experience building software and developing IT solutions. Below is an overview of my main (technical) skill sets and technologies I use. Want to find out more about my experience? Check out my GitHub profile

Native & performant code

I have a strong background in and passion for writing native code, using languages such as C, C++ (03, 11, 20), on platforms ranging from calculators to Windows desktops and Linux servers.

Ruby backends

Having realized numerous web application backends using frameworks such as Ruby on Rails and Sinatra, I'm very familiar with the Ruby language and consider it my go-to scripting language.

Google Ads & Shopping

With 8+ years of experience working with Google Ads (formerly AdWords) as well as Google Shopping, I'm confident with implementing any of the corresponding technologies and APIs.

Ecommerce & online payments

By working with many clients in the ecommerce & advertising industries, I gained valuable experience and insights when it comes to several popular shop systems and payment processors.

Reverse Engineering

I'm able to work with software even in cases where the source code is lacking. This allows me to add, remove or debug functionality, something which would otherwise be considered impossible.

PostgreSQL & data modeling

In plenty of projects, I've been responsible for designing appropriate data models allowing the applications to scale, and implementing them in a suitable database, mostly PostgreSQL.

Web & mobile technologies

I have experience with technologies and languages such as Flutter, JavaScript, PHP, Amazon Web Services, RabbitMQ, Google BigQuery, Apache HTTP server, nginx, and many more.

Multi-service architecture

I've migrated monolithic applications which were crumbling under their weights to well-designed networks of interoperating services, maximizing scalability, stability and performance.

Maintenance & debugging

I take pleasure in maintaining and debugging existing (older) software. I can provide permanent support and/or devise a migration plan, without disrupting production systems.

Git & deployment pipelines

As a software engineer, git is my daily bread and butter. I'm familiar with and regularly implement modern build, test and deployment processes using technologies such as Docker.

Product development

I've planned and designed software products together with CEOs and product managers, contributing my technical knowledge and expertise, yielding superior results.

Network of professionals

Do you require additional skill sets and/or manpower? I routinely work together with a number of world-class designers, engineers and managers. Together, we can achieve anything.

Blog Posts

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The preservation of LEGO Island

Achieving a fully decompiled version of LEGO Island was a significant milestone, but preserving the game for current and future generations was the ultimate goal. To that end, LEGO Island is now available for play on more than 10 platforms, and more are being worked on. Try it in your browser, today!

Nov 24, 2025

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The decompilation of LEGO Island

LEGO Island is a Lego-themed action-adventure game developed and published by Mindscape. It was released for Microsoft Windows on September 26, 1997. It's been the subject of a decompilation project I've been working on for the past 18 months, which has now reached a significant milestone.

Dec 30, 2024

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Archiving a vBulletin forum using HTTrack and Netlify

For many years, I've maintained and hosted a vBulletin forum that I've created to provide a platform for the vaultmp project. Eventually, development has ceased due to time constraints on my part, and I took the forums offline in 2015. Now they have returned as an archived, read-only copy on the same domain.

Apr 7, 2023

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