Simon Kreiser

Work Experience

Software Engineer at REWE Digital

October 2017 - present in Cologne, DE

• React
• Redux
• NodeJS
• Typescript
• SCSS
• Kotlin
• Java

Search result pages and suggestions flyout (shop.rewe.de) delivered as a universal Javascript application embedded in micro frontend architecture.

• Used async data fetching to achieve 7s faster load times on mobile devices (3G)
• Used SSR to achieve 100ms faster load time
• Achieved JS bundle size reduction of 35% by eliminating dependencies
• Increased test coverage of React app from 50% to > 80%

Frontend Software Engineer at Babbel

September 2015 - October 2017 in Berlin, DE

• AngularJS
• NodeJS
• RamdaJS
• Bootstrap
• AWS
• Github API

Implemented UI of an in-house content authoring software.

• Reduced app rendering time from 2.7s to 1.2s, by decreasing the amount of watchers and function calls by 50%

Master Thesis Intern at Babbel

February 2015 - August 2015 in Berlin, DE

• HTML
• CSS
• Vanilla JS
• Git
• Sketch
• Invision

UI Prototyping and user testing of in-house authoring software.

• Users had 82% task completion rate during first-time-usage
• Users felt they became productive quickly: 1.77 (from 1-7)
• High user acceptance, overall satisfaction: 2.11 (from 1-7)

UI/UX Engineer at Webmatch GmbH

January 2012 - August 2013 in Cologne, DE

• HTML
• CSS
• jQuery
• Facebook API

Large corporate websites, microsites, mobile landing pages, Facebook apps

• Implemented Chio Chips Facebook app which helped grow brand follower base by > 5k
• Successfully relaunched ueltje.de, which attracted > 10k unique visitors during first month

Education

Master of Science, Human Computer Interaction

September 2013 - March 2016 in Stockholm, SE & Enschede, NL

• Double Master’s Degree at University of Twente and KTH Royal Institute of Technology
• Scholarship from European Institute of Innovation & Technology
• Summer School Future Urban Life and Mobility in Nice, FR (2014)

Bachelor of Arts, Media Design

September 2008 - January 2012 in Cologne, DE

• Rheinische Fachhochschule Köln
• Best graduate of the cohort
• Exchange Semester at University of East London (2010)

Volunteer Experience

• 2018: Organized frontend bootcamp for new joiners
• 2016: Volunteer for 3rd Babbel Hackday
• 2014: Guide and Coach at EIT Master School Kickoff in Budapest
• 2011 & 2012: Volunteer at Beyond Tellerrand Conference
• 2009 & 2010: Volunteer at FFK - Flash Forum Konferenz

Skills & Expertise

• Building large-scale modular frontend applications with React and AngularJS
• Creating performant, responsive and highly usable interfaces
• Pragmatic team player with a passion for learning

Languages

• German (native)
• English (fluent)
• Swedish (basic)
• Dutch (basic)
• Chinese (basic)