Stefan Plantikow
Principal Software Engineer at ISO/IEC JTC1/SC32/WG3 Database Languages
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolStefan Plantikow is a Principal Software Engineer with 17 years of experience, currently shaping graph query standards and implementation as part of Microsoft Fabric Graph and as Project Lead/Editor of the ISO/IEC GQL standard. He blends deep language-design expertise with systems-level database engineering—having driven the first cost-based planner for property graphs, led openCypher, and built Cypher for Apache Spark (Neo4j Morpheus). Stefan’s work spans standardization, driver APIs, and query engine product leadership, and he has contributed directly to cornerstone projects like Neo4j and its Java driver. Grounded in a Diplom in Computer Science with a background in distributed systems and transaction processing, he brings both rigorous academic foundations and practical production experience. Notably, he pairs formal language work (TCKs, type systems, execution models) with hands-on refactoring and driver-level changes, making him rare among standards leads who still ship core engine code. Based in Berlin, he continually seeks to broaden access to property graph technology across industry and research.
17 years of coding experience
10 years of employment as a software developer
Computer Science (MSc equivalent Informatik (Diplom)) Software Development Distributed Algorithms/Databases Scalability Data Mining Speech Science, Computer Science (MSc equivalent Informatik (Diplom)) Software Development Distributed Algorithms/Databases Scalability Data Mining Speech Science at Humboldt-Universität zu Berlin
English, German
Stackoverflow
21reputation
810reached
1answer
1question
Github Skills (17)
transaction10
apidoc10
databases10
graph-database10
java10
neo4j10
javas10
transactionscope10
api10
driver10
database-design10
transaction-manager10
database10
bolt9
cypher9
Programming languages (16)
Github contributions (5)
neo4j/neo4j
Jan 2013 - Sep 2017
Graphs for Everyone
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:904 commits, 242 PRs, 168 pushes in 4 years 8 months
Contributions summary:Stefan contributed to the Neo4j repository by modifying Java code related to internal APIs, data operations, and procedure implementations. They refactored code, renamed methods, and moved functionality between different classes. The user's work included changes to the query execution and graph database operations, particularly in the context of transaction management and procedures for managing queries and connections.
neo4j-databasedirected-acyclic-graphnosqlgraphsdatabase
neo4j/neo4j-java-driver
Sep 2015 - Apr 2016
Neo4j Bolt driver for Java
Role in this project:Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:52 commits, 22 PRs, 14 pushes in 7 months
Contributions summary:Stefan primarily focused on modifying and improving the Neo4j Java driver. Their contributions included commenting out and removing components of a `ProfileSummary` feature, and the introduction of a `Statement` concept including its associated test. They also restructured the summary API to align with Cypher's output and added support for receiving basic result metadata and plans, and implemented the functionalities for the new results API. These changes indicate a focus on improving the driver's core functionality and result handling.
neo4j-databasedriverboltneo4j-driverdatabase
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