Experience

Sebastian Software GmbH

• Germany
• IT Services and IT Consulting
• 1 - 100 Employee

• Managing Director

  • 2014 - Present



Sebastian Fastner

• Mainz, Germany

• Freelancer

  • Oct 2009 - Present

  Beside my big main projects I develope some smaller apps for my customers. Beside my big main projects I develope some smaller apps for my customers.



Witt-Gruppe

• Germany
• Textile Manufacturing
• 300 - 400 Employee

• Senior Frontend Developer

  • Apr 2019 - Sep 2020

  Replacement of 17 online shops of the Witt Group. New development with focus on scalability, multi-brand support in international environments and ease of maintenance. The team organised itself with Scrum and Kanban. All developments have been rolled out with Continuous Deployment directly into the live system. Quick replacement of the old systems to avoid duplicate developments. - Development of the shops with the help of Next.js, React and Styled Components - Connection of Contentful to support the SEO department with dynamic pages and individual elements on the shop pages - Connection of product data with ABOUT YOU backbone - Encapsulation of back-end systems with Apollo GraphQL - Development of the deployment infrastructure for secure continuous deployment - Establishment of an automatic test infrastructure to secure continuous deployments, automatic testing of all GraphQL queries. - Support in architecture of the development, test and production environment with Kubernetes and Vault on AWS



DWS Group

• Germany
• Financial Services
• 700 & Above Employee

• Senior Frontend Architect

  • Apr 2016 - Mar 2019

  Implementation of a purely digital white-label investment platform. This includes the investment itself, the registration of the client and the automatic balancing of the portfolio. Integration of WISE in over 10 European and Asian investment platforms. As part of the development of the platform, support in the development of a Deutsche Bank framework for front-end development based on React. - Development of a mobile responsive frontend in HTML5 with React - Migration of the prototype based on VueJS - Integration of a digital passport check - Integration of a digital document signature - Building the architecture and deployment pipeline



Deutsche Telekom

• Germany
• Telecommunications
• 700 & Above Employee

• Senior Application Architect

  • Mar 2016 - Aug 2016

  Implementation of a mobile application for setting the "OneNumber" feature for business customers of Deutsche Telekom. The application was implemented for iOS, Android, BlackBerry, Amazon FirePhone and Windows Phone. - Development of a mobile frontend in HTML5 with AngularJS - Reading the address book of the respective platform - Integration with Deutsche Telekom's MultiManager on Android - Communication via REST with the existing backend - Authentication via OAUTH2 with the login system of Deutsche Telekom



JAKO-O

• Retail Apparel and Fashion
• 1 - 100 Employee

• Senior Application Architect

  • Jul 2015 - Mar 2016

  Technical conception and implementation of a gift table (wish list) for the JAKO-O online shop.- Development of a front end in JavaScript for desktop + smart phone with VueJS- Development of a backend in Node.js + Express- Development of a mass importer for product data ' Deep integration into the JAKO-O shop

• Senior Application Architect

  • May 2015 - Jul 2015

  Conception and implementation of a gift advisor for mobile platforms based on existing product scores from the JAKO-O online shop.- Development of a mobile front end- Optimisation of interaction elements for smartphones- Improvement of the deployment process- Extension of the evaluation of KPIs for new device class



Deutsche Telekom

• Germany
• Telecommunications
• 700 & Above Employee

• Senior Application Architect

  • Mar 2015 - Jul 2015

  Implementation of a mobile application for setting the "OneNumber" feature for business customers of Deutsche Telekom. The application was implemented for iOS, Android, BlackBerry, Amazon FirePhone and Windows Phone. - Development of a mobile frontend in HTML5 with AngularJS - Reading the address book of the respective platform - Integration with Deutsche Telekom's MultiManager on Android - Communication via REST with the existing backend - Authentication via OAUTH2 with the login system of Deutsche Telekom



SUZUKI DEUTSCHLAND GMBH

• Germany
• Retail
• 1 - 100 Employee

• Senior User Interface Engineer

  • Jul 2014 - Sep 2014

  Conception and development of an e-learning platform to prepare for certification for the German dealer network of Suzuki. - Development of web front-end and back-end - Use on desktop and tablets - End-user front end and editorial and administration interface Conception and development of an e-learning platform to prepare for certification for the German dealer network of Suzuki. - Development of web front-end and back-end - Use on desktop and tablets - End-user front end and editorial and administration interface



Bank

• Frankfurt, Hesse, Germany

• Frontend Developer

  • Feb 2014 - Jun 2014

  Conception and development of a user interface for easy creation and editing of a virtual data centre including determination of the best offer of different providers of virtual data centre components. - HTML5 user interface in Ember.js for desktop and tablets - Complex drag and drop editor for editing the individual Components Conception and development of a user interface for easy creation and editing of a virtual data centre including determination of the best offer of different providers of virtual data centre components. - HTML5 user interface in Ember.js for desktop and tablets - Complex drag and drop editor for editing the individual Components



Deutsche Telekom

• Germany
• Telecommunications
• 700 & Above Employee

• Javascript Developer

  • Jun 2010 - Sep 2013

  I was part of the PagePlace / tolino web front-end team that developed an HTML5 application based on the unify framework for parsing and displaying ePub documents. The HTML5 application was also integrated as a component in the native iOS and Android application. I was part of the PagePlace / tolino web front-end team that developed an HTML5 application based on the unify framework for parsing and displaying ePub documents. The HTML5 application was also integrated as a component in the native iOS and Android application.



Unify Project

• Mainz, Germany

• Lead architect and developer

  • Jan 2010 - Sep 2013

  I am lead architect and developer of the unify project, a mobile web framework to simplify development of apps on smart phones. I am lead architect and developer of the unify project, a mobile web framework to simplify development of apps on smart phones.



Deutsche Telekom / Products and Innovation

• Darmstadt, Germany

• Freelancing software consultant

  • Jan 2010 - 2012

  Based upon the unify framework I developed mobile and desktop web apps for some of the Telekom brands like Fussball.de and PagePlace. Based upon the unify framework I developed mobile and desktop web apps for some of the Telekom brands like Fussball.de and PagePlace.



Deutsche Telekom / T-Home

• Darmstadt, Germany

• Freelancing software consultant

  • Oct 2008 - Dec 2009

  As lead architect I developed a web portal to visualize internal KPIs for Telekom's T-Home Germany server measurements to support better capacity utilization. As lead architect I developed a web portal to visualize internal KPIs for Telekom's T-Home Germany server measurements to support better capacity utilization.



bschmidt.com consulting GmbH

• Mainz, Germany

• Software Consultant

  • Jul 2008 - Sep 2009

  bschmidt.com is the mother company of 3ado AG. My business was the development of full stack web solutions for customers. bschmidt.com is the mother company of 3ado AG. My business was the development of full stack web solutions for customers.



DoubleF IT

• Mainz Area, Germany

• Founder

  • Apr 2004 - Jul 2008

  Enabling broad band internet connections via wireless lan to consumers. We both devloped the server and software side as well as installed the wifi connections from our customers to our headquater to enable a public lan with access to the internet. Enabling broad band internet connections via wireless lan to consumers. We both devloped the server and software side as well as installed the wifi connections from our customers to our headquater to enable a public lan with access to the internet.



3ado AG

• Mainz, Germany

• Java architect and developer

  • May 2007 - Jun 2008

  Lead architect and developer for JourFixe, a SaaS productivity system. Lead architect and developer for JourFixe, a SaaS productivity system.



netz98 new media GmbH

• Mainz, Germany

• web developer / diploma

  • Oct 2006 - Mar 2007

  Development of a social gift and shopping platform sosmart.de to categorize items to interest groups (age, male/female etc.) Development of a social gift and shopping platform sosmart.de to categorize items to interest groups (age, male/female etc.)



Bingen University of Applied Sciences

• Germany
• Higher Education
• 1 - 100 Employee

• IT System Administrator

  • 2002 - 2005

  System administrator for web and mail servers. System administrator for web and mail servers.