Johannes Braun

Driving Search Relevance and Personalization for OLX Emerging markets Challenges: >> Redesign of search query assistance, query understanding, retrieval and ranking >> Prediction of Ad quality and availability >> Developing hybrid recommender systems to enable browsing through related unstructured content in a cold-start data scenario >> Personalized hyperlocal feed generation >> Structured attribute extraction from user generated image and text data

Scaling the news aggregator UPDAY for Samsung* from 0 to 10m+ monthly users while constantly improving highly personalized news feeds significantly increasing open rate and time spent in app Ownership of Personalization vision and feature roadmap. Running multiple cross-functional scrum teams Challenges: >> Multilingual news feed crawling, automated genre classification and duplicate clustering >> Topic extraction, entity linking to wikipedia knowledge graph >> Sentiment and style identification

datascienceretreat.com

Design and implementation of recommender systems to create contextualized and personalized suggestions of either similar, inspiring or complementary products to EBAY buyers Ownership of product vision / feature roadmap and communication to senior leadership. Leading multiple agile Scrum teams of >15 data scientist and engineers to innovate algorithmic merchandising and significantly increase user engagement

Focus: Speech and Language Technology, Information Retrieval, Machine Learning Final project: Learning to rank for Product Search, EBAY Inc.

Design and implementation of ebay's search ranking algorithm “Best Match” to improve relevance, quality and trust in search results while improving visitor conversion Working with US based product development to define international solutions and prioritize resources. Communicating best practices to customer support and seller community

AB-testing process owner for EU including traffic allocation, statistical analysis and communication Support Search Science product management by analysing financials and behavioural metrics to understand and quantify success

Focus: Speech and Language Technology, Information Retrieval, Machine Learning Final project: Learning to rank for Product Search, EBAY Inc.

Informatik