About

Hi, I am Felix Geisendörfer, a programmer and entrepreneur living in Berlin, Germany.

Currently I’m writing software in Go as a contractor.

In the past I’ve co-founded and bootstrapped Transloadit into a profitable business, was one of the first contributors to node.js and worked on many other open source projects as well.

One of my spare time passions is robotics, so a few friends and I organized an event around programming flying robots with JavaScript called NodeCopter which has now turned into a small community.

You can find me on twitter and github, or contact me directly.

Blog

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Implementing State Machines in PostgreSQL
PostgreSQL operations that you can't EXPLAIN
Go + Raspberry Pi powered Alarm Clock
Using TCP keepalive with Go
GoDrone - A Parrot AR Drone 2.0 Firmware written in Go
Vim Trick: Open current line on GitHub
Let's Fix File Uploading
The Pull Request Hack
Open Source And Responsibility
Hello World

I have been blogging since 2006, my older posts can be found here.

Speaking

After speaking a little too much in 2012, I've heavily cut down on events, but I still enjoy speaking ocassionally, so reach out if you'd like to invite me to an event.

fgprof - The Full Go Profiler · pdfGoWayFest, Online
tus.io - Squeezing Cats Through Tiny Mobile TubesJSConf.us, Florida
tus.io - Squeezing Cats Through Tiny Mobile TubesWeb Rebels, Oslo
tus.io - Resumable file uploads for web and mobile appsCodemotion Berlin
tus.io - Resumable File Uploads · pdfUIKonf Preparty, Berlin
Programming flying robots with JavaScript · pdfNEXT Berlin
Programming flying robots with JavaScript · pdfRailsberry, Krakow
Programming an AR Drone Firmware in JS (de) · pdfDenkwerk, Cologne
Programming an AR Drone Firmware in JS (de) · pdf · videoCologne JS Usergroup
Faster than C? · pdfPrague JS Usergroup
Flying robots over a 10.000 mile distance with JavaScript · pdfSydney JS Usergroup
Faster than C? · pdfNodeconf.it, Italy
The power of node.js (with quadcopters) · pdf · videoØredev, Malmö
Faster than C? · pdf · videoNodeDublin
Faster than C? · pdf · video · codeJSConf.EU, Berlin
Programming flying robots with node.js · pdf · videoLXJS Lisbon JavaScript, Lisbon
The power of node.js (with quadcopters) · pdfDeveloper Conference, Hamburg
The zen of node.js · pdf · videoCampus Party Europe, Berlin
Node.js Quadcopter Programming · pdfBerlin JS Usergroup
As fast as C? · pdf · videoLondon Node.js User Group
Node.js - A practical introduction · pdfBig Techday, Munich
The Node.js Scalability Myth · pdfMunich Node.js User Group
Node.js in production · pdf · videoWeb Rebels, Oslo
Bootstrapping Transloadit.com · pdfRoots, Bergen
The Node.js Scalability Myth · pdfRoots, Bergen
The Node.js Scalability Myth · pdfMix IT, Lyon
The Node.js Scalability Myth · pdfBerlin JS Usergroup
JavaScript - The Bad Parts · pdfBerlin JS Usergroup
Node.js - Best Practices · pdf · videoMunich Node.js User Group
Node.js - A practical introduction · pdf · videoMunich Node.js User Group
Node.js - A practical introduction · pdf · videoØredev, Malmö
Building an alarm clock with node.js · pdfReject.js, Berlin
Node.js - Eine praktische EinführungDeveloper Conference, Hamburg
How to Test Asynchronous CodeBerlin JS Usergroup
How to Test Asynchronous Code · pdfNodeConf, Portland
Node.js - A quick tour · pdfGameforge AG, Karlsruhe
Transloadit · pdfStartup Riot, Atlanta
Node.js - A quick tourAtlanta JavaScript Meetup Group
Node.js - Should Ruby Developers Care? · pdfAtlanta Ruby Meetup Group
Node.js in production · pdfBerlin JS Usergroup
Node.js as a networking tool · pdf · video27C3, Berlin
Node.js - A quick tourRuby User Group Berlin
Dirty - How simple is your database? · videoJSConf EU, Berlin
Node.js - A quick tourHamburg.js User Group
Node.js - A quick tourBerlin JS Usergroup
JavaScript and GitCakeFest, Berlin
Recipies for successful CakePHP projectsCakeFest, Berlin
jQuery and CakePHPCakeFest, Buenos Aires
Git and CakePHPCakeFest, Buenos Aires
With jQuery & CakePHP to World DominationCakeFest, Orlando
ActiveDOMjQuery Camp, Cambridge

Contact

You can reach me at hi@felixge.de

I love meeting new people, so if you're in Berlin, I'm almost always up for having lunch or coffee - just get in touch!

Please use Github for any questions or bug reports concerning my open source projects, this way the information can become useful to everybody.

I try to answer all e-mails, but sometimes I have a bit of a backlog.

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