Roblox's vision is to reimagine the way people come together. Our mission is to connect a billion people with optimism and civility.

What is Roblox?

Roblox is a platform where people come together virtually to share experiences. Every day, tens of millions of people from around the world come to Roblox to learn, work, play, connect, communicate, and socialize in immersive digital experiences all built by a global community of creators.

Powered by Creators

Roblox is powered by a global community of millions of developers and creators who produce their own immersive multiplayer experiences each month using Roblox Studio, our intuitive desktop design tool. Any experience imaginable can be created on Roblox.

How Popular?

Roblox is ranked as one of the top entertainment platforms for audiences under the age of 18 based on average monthly visits and time spent (Comscore). Our popularity is driven purely by the community with millions of people signing up through word of mouth every month.

Activities and Societies: Computer Graphics Quit half way through because Silicon Valley was calling =)

Fachhochschule Darmstadt

Activities and Societies: Robotics Research Group (Humanoid Robots) Exempted from tuition fees due to outstanding achievements.

Fachhochschule Mannheim - Hochschule für Technik und Gestaltung

■ Application-Platform Team (aka Core-Services)
 - Primary owner of one of the most critical and high Request/s services in Roblox
 - Reduce Timeouts by 99.95% 📉
 - Reduce P99 Latency by 80% 📉
 - Improve scalability of service to 8x Requests/s at same cost 📈
■ Lead workstream in Active/Active readiness efforts

Senior Software Engineer

Founder

Collection of different personal side projects unaffiliated with any company.
Highlights: 
■ FarmTower - A casual Android game with over 2M downloads, that peaked in the top 5 Android games in the Android Market (aka Google Play Store).
■ Bitcoin ATM - Arduino+Android hardware project
■ VAmp - Video Amplification
■ Autonomous hexapod robot
■ A Play! - a software-only multiplayer game console

Sideprojects

Contract Software Engineer

Engineering:
■ Development of the backend of the Volvo Valet Pickup & Delivery product in a team of 2.
 - Node.js & Sequelize backend.
 - Transactional data integrity in MySQL.
 - Cutting edge Typescript frameworks and approaches.
 - Modern microservice architecture.
 - Continuous Deployment on AWS powered by Spinnaker and Kubernetes.
Product/Design:
■ Involvement in initial customer facing and internal product decisions.

Principal Software Engineer

Acquired by Volvo in 2017.
Engineering:
 ■ Conceptualized, architected and implemented the next generation logistics engine in a team of 3.
  - Transactional data integrity in MySQL.
  - Cutting edge Node.js frameworks and approaches.
  - Simplified complex graph based data into human readable data format.
  - Optimization of high throughput, high payload-size endpoints.
  - Topological debug visualizer tool.
 ■ Shaped engineering culture from 2 to 17 (and growing) engineers.
  - Involved in interviewing up to VP level.
  - Actively trained and managed several engineers.
 ■ Created the Continuous Deployment strategy and environments using Spinnaker (Netflix).
 ■ Created the flexible pricing infrastructure with location and time based peak/surge pricing.
 ■ Created the Android customer app.
  - Modern, modular architecture using Mortar, Flow and Dagger for Dependency Injection.
  - Push Notifications.
  - Designed for all resolutions with internationalization in mind.
  - Prototyped Android Wear app.
 ■ Created a tool to create animated heatmaps from massive location datasets.
 ■ Created the Continuous Integration environment for the Android app and backend (Jenkins/Travis).
  - Utilized a multitude of analysis tools (coveralls, codeclimate, jscs, jshint, emma, lint...).
 ■ Created a secondary/fallback internal tool to visualize the ongoing logistics in realtime.
 ■ Created a framework for sending automated event based emails/notifications to alert in-field operations staff.
 ■ Created various chart.io dashboards.
 ■ Created of the initial dispatch algorithm, efficiently serving thousands of real life customers in 8 cities.
 ■ Brought both iOS customer and employee app from prototype to production readiness.
 ■ Wrote a majority of the initial backend (Node.JS).
Product/Design:
 ■ Deep involvement in initial customer facing and internal product decisions.
 ■ Designed large parts of the Android app.
  - Ensured to keep a look and feel natural to Android users.

Senior Staff Software Engineer (acquired by Volvo)

Acquired by Zynga in 2011.
AndEngine is a free 2D OpenGL Game Engine for the Google Android platform.
AndEngine is used in over 20000 Android apps and games, including major hits from Zynga, and was installed over 1 Billion times on 100's of millions of Android devices across the globe. Most famously the global sensation Flappy Bird was developed using AndEngine.
Several books have been written about AndEngine development, some of them received technical guidance and were reviewed by me.

CEO & Founder (acquired by Zynga)

anddev.org was the at the time world's largest Android Development Community providing Tutorials on the Google Android Platform.

AndDev

■ With Friends Platform
■ Words With Friends (Android)
■ Internal Android engineer retraining workshops
■ AndEngine OpenGL ES 2.0 development

AndNav was the first (yes, way before Google did it itself) turn-by-turn navigation software for the Google Android platform. Featuring text-to-speech, multi language support, satellite imagery, 2.5D view, POI, waypoints, address search, ... AndNav was way ahead of its time and competitors.