Thomas Leitner
Director Quality Assurance at ADB SAFEGATE
Austria
Summary
🤩
Rockstar🎓
Top SchoolThomas Leitner is a seasoned Director of Quality Assurance based in Austria with 22 years of experience leading QA and engineering teams across aviation and safety-critical domains. He blends hands-on software engineering and test automation expertise with executive leadership, having run QA functions at ADB SAFEGATE and AviBit and served as managing director of an air traffic solutions company. Trained as an electrical engineer with a PhD in Radar Communications from TU Graz, he pairs deep technical knowledge of signal and systems engineering with a pragmatic approach to product quality and reliability. An active contributor to Ruby open-source projects like kramdown, HexaPDF and Prawn, he has improved PDF processing, parser documentation and automation test suites—work that reflects a keen eye for refactoring and performance. Colleagues rely on him to translate complex, safety-critical requirements into robust, testable systems and scalable QA processes. He is notable for combining academic rigor with applied engineering in both research and commercial aviation software.
22 years of coding experience
34 years of employment as a software developer
Dipl.-Ing., Electronics and Radar Technology, Dipl.-Ing., Electronics and Radar Technology at TU GrazIng., Electrical and Electronics Engineering, Ing., Electrical and Electronics Engineering at HTL KapfenbergPhD, Dr., 2001, Radar Communications and Systems Technology, PhD, Dr., 2001, Radar Communications and Systems Technology at TU-Graz
English, German, Italian
Github Skills (16)
serialization10
ruby10
api-documentation10
pdf10
data-serialization10
parser10
pdf-parsing10
optimization9
testing9
optimisation9
numerical-optimization9
algorithm9
code-optimization9
algorithms9
performance-tuning8
Programming languages (16)
Github contributions (5)
gettalong/kramdown
Dec 2008 - Apr 2022
kramdown is a fast, pure Ruby Markdown superset converter, using a strict syntax definition and supporting several common extensions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 reviews, 967 commits, 149 PRs in 13 years 6 months
Contributions summary:Thomas contributed to refactoring and updating the API documentation of the kramdown parser. The changes included small refactorings in the code and updates to the documentation to improve the overall readability of the code and to keep the documentation up-to-date with the new functionalities being implemented. The contributions also included implementing automatic header ID generation and the addition of attributes in code for new features.
kramdownmarkdownrubypdf
gettalong/hexapdf
Sep 2014 - Jan 2023
Versatile PDF creation and manipulation for Ruby
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:2 reviews, 1812 commits, 17 PRs in 8 years 6 months
Contributions summary:Thomas primarily contributed to the HexaPDF library by refactoring existing tests, modifying content stream parsing and serialization, and enhancing the internal workings of the library. They focused on improving performance and stability by optimizing code for various parts of the PDF processing pipeline, including true type font handling and data stream processing. Additionally, the user implemented test cases to ensure the correctness of parsing PDF data and refactored to support newly added features.
pdfrubypdf-generationpdf-manipulation
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