sthlm.js meetup #7 at Spotify!

This is a past event

244 people went

Location image of event venue


Spotify will be hosting the next sthlm.js meetup at their new offices @ Birger Jarlsgatan 61.

Paul Lewis from Google, Robert Nyman from Mozilla and Spotify's own Mattias P Johansson (see below for bios) have all agreed to give talks:

0. Open Doors 18:00
1. 18:15 Welcome
2. Mattias P Johansson - Functional reactive programming (30 min)
3. Break (10 min)
4. Paul Lewis - Developing for performance (60 min)
5. Break (10 min)
6. Robert Nyman - JavaScript and new possibilities (30 min)


Mattias Petter Johansson (@mpjme) works as a developer at Spotify. Before that, he worked on the video editing app in the new Blackberry phones, built campaigns for Absolut Vodka, founded an eCommerce company, and unsuccessfully worked as a producer for Swedish television. He has been coding for 14 years and his record time on the Rubiks Cube is 1 minute and 20 seconds.

"Functional reactive programming (FRP) is a declarative approach to GUI design. The term declarative makes a distinction between the “what” and the “how” of programming. A declarative language allows you to say what is displayed, without having to specify exactly how the computer should do it."


Paul Lewis has been a developer for the past decade, and has worked at various high-profile agencies in the UK and Sweden. He is currently a Developer Programs Engineer on Google's Chrome team, where he spends most of his time dealing with performance and graphics. He is easily located on Twitter as @aerotwist, and via

"Performance is a big deal. It's the difference between your app feeling like a clunky, disappointing mess or a silky-smooth joy for your users. But what do we mean by performance, anyway? And how can we measure what's going on so that we can make smarter decisions? In this talk I'll outline the parts of Chrome that you need to know about, and then take a deeper dive into rendering and compositing to show how you can start improving your apps immediately."


Robert Nyman (@robertnyman) is a Technical Evangelist for Mozilla and the Editor of Mozilla Hacks. He's a strong believer in HTML5 and the Open Web, has been working since 1999 with Front End development for the web - in Sweden and in New York City. He regularly blogs at, loves to travel and meet people.

"JavaScript is definitely here to stay now, and it's an integral part of development. This talk will introduce you to new WebAPIs and Web Activities Mozilla have been working on, and also a glimpse into WebRTC and how the web will excel as a platform."


P.S. Much of love to Gabriel Bonander for getting the speakers and arranging the venue, food and drinks :) .