Heiko Vogeler
Senior Software Engineer at Ab Initio Software
Cologne, North Rhine-Westphalia, Germany
Summary
👤
Senior🎓
Top SchoolHeiko Vogeler is a Senior Software Engineer based in Cologne with over two decades of hands-on experience and nine years in his current focused role, blending full-stack Java/Kotlin Spring development with modern systems like Rust, Kafka, Postgres, Protobuf and React/TypeScript. A long-time consultant and founder, he led the largest Java project in Europe and has repeatedly served as lead architect for complex ETL, real-time integration and data governance initiatives in telecom and banking. Heiko’s deep expertise in Ab Initio, data warehousing and Realtime Data Integration is complemented by practical contributions to open-source tooling—most notably refining T-SQL grammar in the widely used ANTLR grammars-v4 repository. Equally comfortable in pre-sales POCs and production delivery, he brings entrepreneurial experience from founding companies and running engineering teams to solving high-stakes data challenges.
9 years of coding experience
20 years of employment as a software developer
Mathematisch Technischer Assistent, Computer Software Engineering, Mathematisch Technischer Assistent, Computer Software Engineering at Degree in Software EngineeringAbitur, Abitur at Anno Gymnasium
German, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (6)
grammar10
parserator10
grammars10
parser10
antlr10
tsql10
Programming languages (3)
Github contributions (5)
antlr/grammars-v4
Oct 2017 - Nov 2017
Grammars written for ANTLR v4; expectation that the grammars are free of actions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:16 commits, 2 PRs, 19 comments in 6 days
Contributions summary:Heiko primarily worked on refining the T-SQL grammar within the ANTLR grammar repository. Their contributions included adding optional parentheses for function bodies and correcting errors in the `expression_elem` rule, as well as addressing issues with semicolons in unexpected locations. The user also reverted a previous commit, indicating a focus on maintaining the integrity and correctness of the T-SQL grammar definition.
grammarparser-generatorabstract-syntax-treeexpectationgrammars
hvogeler/aoc2024go
Dec 2024 - Feb 2025
Contributions:102 pushes, 1 branch in 1 month
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