René Kriegler
Chief Strategy Officer (CSO)
Berlin, Germany
Summary
👤
SeniorRené Kriegler is a search and e-commerce relevance specialist with 13 years of experience, currently serving as Chief Strategy Officer at OpenSource Connections in Berlin. He combines deep, hands-on expertise with Solr and Elasticsearch with a strategic view of product and search UX for commerce platforms. René organizes MICES (Mix-Camp E-commerce Search) and maintains Querqy, a practical query-rewriting open-source library used to improve relevance in production search systems. His work blends engineering, community-building, and practical tooling to bridge the gap between research and deployable search solutions. Colleagues rely on him for pragmatic, scalable approaches to query rewriting and relevance tuning that drive measurable business outcomes.
13 years of coding experience
English, German, Swahili, French
Github Skills (48)
lucene10
search-engine10
query-builder10
solr10
java10
elasticsearch-plugin10
query-parser10
preprocessor10
elasticsearch10
rewrite-rules10
smui10
ecommerce9
custom-search9
jsonpath9
levenshtein9
Programming languages (7)
Github contributions (5)
querqy/querqy-docs
May 2020 - Dec 2022
Documentation for Querqy projects
Contributions:3 reviews, 82 commits, 24 PRs in 2 years 7 months
querqy
querqy/querqy
May 2014 - Jan 2023
Query preprocessor for Java-based search engines (Querqy Core and Lucene implementation)
Contributions:84 reviews, 1016 commits, 484 PRs in 8 years 10 months
javalucenepreprocessorsearch-enginequery-parser
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