# Sebastian (@sebastian.eurosky.social)

Profile: https://sifa.id/p/sebastian.eurosky.social

## Experience

- **Co-Lead at Eurosky** (2025 – present)
- **CEO at Birdsong Apps GmbH** (2025 – present)
- **Freelancer at -** (2007 – present)
- **M.-Sc. Working Student at Morgen Studios** (2007 – 2007)
  Working Student (M.Sc.)
- **Software-Development & Systemadministration at Institute for Mathematical Stochastics** (2001 – 2005)
  Software Development & System-Administration

## Education

- **Georg-August-Universität Göttingen** — M.Sc. (2001 – 2007)

## Skills

- iOS development
- Objective-C
- Mobile Applications
- W3C Accessibility
- SwiftUI
- Test Driven Development
- iPhone development
- Git
- Flashes for Bluesky
- iOS Development
- iPhone
- Soziale Medien
- Agile Methoden
- atproto
- User Experience
- Creator
- REST
- Barrierefreiheit
- Swift (Programmiersprache)
- Ruby on Rails
- Ruby
- PostgreSQL
- Softwareentwicklung
- iOS Entwicklung
- Mobilanwendungen
- Software Development
- Digitale Barrierefreiheit
- Datenschutz
- iOS
- Back-End-Webentwicklung
- Softwarearchitektur

## Projects

- **Simfy next iOS App** — https://itunes.apple.com/de/app/simfy-next/id600461545?l=en&mt=8
  iOS App Technologies: ObjectiveC, iOS
- **Zalando iPhone App** — https://itunes.apple.com/de/app/zalando-mobile/id585629514
  Concept, design and implementation/programming of Zalando's iPhone App   https://itunes.apple.com/de/app/zalando-mobile/id585629514
- **Wall AG  - bluespot City Info iPhone/iPad App** — http://itunes.apple.com/app/bluespot-city-info/id560122086#
  Backend, iPhone App Technologies: Ruby on Rails, ObjectiveC, iOS
- **MAN IAA 2012 iPhone App** — http://itunes.apple.com/us/app/man-iaa-2012/id561002434?ls=1&mt=8
  Backend, iPhone App, Interface Design Technologies: Ruby on Rails, ObjectiveC, iOS, Augmented Reality
- **Stylebop iPhone App** — http://itunes.apple.com/us/app/stylebop-shopping-app/id432512739?mt=8
  iPhone App, Interface Design Technologies: Objective-C, iOS
- **teNeues Cool City Guides iPhone & iPad Apps** — http://itunes.apple.com/de/artist/teneues-digital-media-gmbh/id429952977
  Backend, iPhone/iPad Apps Technologies: Ruby on Rails, Objective-C, iOS
- **MAN Truck & Bus iPhone App** — http://itunes.apple.com/us/app/man-truck-bus/id436123140?mt=8
  Backend, iPhone App, Interface Design Technologies: Ruby on Rails, ObjectiveC, iOS
- **MAN Truck & Bus iPad App** — http://itunes.apple.com/us/app/man-truck-bus-hd/id436814342?mt=8
  Backend, iPhone App, iPad App (HD), Interface Design Technologies: Ruby on Rails, ObjectiveC, iOS
- **KaDeWe iPhone App** — http://itunes.apple.com/de/app/kadewe-app/id508772555?mt=8
  iPhone App for the KaDeWe Berlin.

Technologies: ObjectiveC, iOS
- **Friends' Events for Facebook iPhone App** — http://itunes.apple.com/us/app/friends-events-for-facebook/id494982353?mt=8
  iPhone App that displays all events that your friends will be attending in the near future.

Technologies: Objective-C, iOS, Facebook Integration
- **Hypercharge PCI-Certified Payment Gateway (Ruby on Rails)** — http://www.a1m.biz
  A modern, agile payment gateway based on ruby on rails technology. The secure bridge between your E-Commerce Web site and the credit card processing networks. PCI DSS certified by Visa and Mastercard.

Complete System Architecture & Software Development of the Hypercharge Payment Gateway, Interface Design  Technologies: Ruby on Rails, Reddis, HTML 5
- **MAN IAA iPhone App 2010 - Backend**
  Backend, Mobile Web-App, Interface Design Technologies: Ruby on Rails, HTML 5
- **Samsung Erfolgswelle**
  Web-App Technologies: Ruby on Rails, HTML 5, Salesforce Integration
- **eMerchantPay E-Wallet**
  FSA-certified E-Wallet solution for the PSP eMerchantPay  Web-App (Ruby on Rails), Interface Design  Technologies: Ruby on Rails, HTML 5, Reddis, Hypercharge Integration, Postgres
- **Viessmann Mobile Web App** — http://m.viessmann.de
  Backend, Mobile Web-App, Interface Design Technologies: Ruby on Rails, HTML5
- **Oncology Guideline iPhone & Android App** — http://itunes.apple.com/de/app/leitlinien-onkologie/id453786520?mt=8
  Backend, iPhone & Android App for the German Cancer Association  Technologies: Backend, iPhone App, Android App, Interface Design
- **PicTrip iPhone App** — http://itunes.apple.com/de/app/pictrip/id470563161?mt=8
  iPhone App that lets you create rapid slideshows.

Technologies: Objective-C, iOS
- **Raceunion iPhone App** — http://itunes.apple.com/us/app/raceunion/id437234607?ls=1&mt=8
  Backend, iPhone App Technologies: Ruby on Rails, ObjectiveC, iOS
- **Entega - “Rettet den Schneemann”**
  Web-App Technologies: Ruby on Rails, HTML 5, Facebook/YouTube/Twitter Integration
- **VeeQue** — http://www.veeque.biz/veeque.html
  System Architecture & Software Development of the VeeQue System, Interface Design Technologies: Ruby on Rails, Quicktime C API, AMQP, Rabbit MQ
- **SanKyu** — http://www.sankyu.com
  System Architecture & Software Development, Interface Design  Technologies: Ruby on Rails, Reddis, HTML 5
- **DOUBLE STANDARDS Website** — http://doublestandards.net
- **Modalyzer iOS App** — https://www.modalyzer.com
  A mobility tracking app.
- **visitBerlin iOS App** — https://itunes.apple.com/de/app/id964438630
  Unterstützende Entwicklung.
- **iNamnese iOS App & Backend** — https://devicon.de/inamnese/
  Backend in Ruby on Rails zur dynamischen Erstellung von Anamnese Formularen in versch. Sprachen, inkl. digitaler Signierung.

iOS App zur Darstellung/Ausfüllen der Formulare durch den Patienten.
- **Cartier AR iOS App**
  Augmented Reality app (internal) that would display several locations of a Cartier summit in Berlin.
- **Solarkiosk - Custom Project Management Software** — http://solarkiosk.eu
  Internal project management tool based on Ruby on Rails.
- **DFB #JederFuerJeden iOS App** — http://www.apprime.de/dfb-die-mannschaft-jeder-fuer-jeden-app-online-game/
  Unterstützende Entwicklung.
- **MotionTag iOS App** — https://motion-tag.com
  iOS App for Mobility Analytics and Seamless Ticketing.
- **FontBook iOS App** — http://fontbook.com
  Weiterentwicklung der iOS App.
- **Tungsten iOS App** — https://tungstenapp.com
  Secure messaging iOS App. Unterstützende Entwicklung.
- **Quirion iOS App** — https://www.quirion.de
  iOS Banking / Robo Advisor App.
- **Talents Connect** — https://www.talentsconnect.com
  Consulting for Talent Connect's iOS app
- **Skeets for Bluesky**
  Native Bluesky client for iOS / iPad  Features:
- Bookmarks
- Drafts
- Mute Words
- Rich Push Notifications
- Hashtags
- Alt-Text Generator
- Accessibility / VoiceOver Support  https://www.skeetsapp.com

## Publications

- Untitled — sebastian.pckt.blog (https://sebastian.pckt.blog/untitled-r5smuz7)
- Digital cocaine: Why a social media ban for teenagers is not enough — sebastian.leaflet.pub (https://sebastian.leaflet.pub/3m6ufpq7axc2u)
- Social Media is critical infrastructure — sebastian.leaflet.pub (https://sebastian.leaflet.pub/3m6tkj3thes2i)
- Title for this test — sebastian.leaflet.pub (https://sebastian.leaflet.pub/3m27athalds2e)

## Languages

- German (native)
- English (full_professional)
- French (limited_working)
- Spanish (elementary)