Robert Stepanek
External Consultant at Austrian Telecommunications Provider
Vienna, Austria
Summary
👤
Senior🎓
Top SchoolRobert Stepanek is an external consultant and seasoned software professional with over 14 years of experience across telecommunications, new media and IT, currently driving platform rationalization and BSS/OSS architecture migration for a major Austrian telco. He combines hands-on backend development and core server logic expertise—evidenced by contributions to well-known open-source projects like Cyrus IMAP and Xapian—with strong technical and delivery management across multi-country teams. A Master of Science in Computer Science from TU Wien, he fluently bridges business and technology, translating complex requirements into pragmatic architecture and migration plans. His background spans founding two tech ventures, international consulting at Accenture, and research in model-based testing and machine learning, reflecting both entrepreneurial grit and academic rigor. Notably, his open-source work focuses on protocol-level improvements (JMAP) and search/text-processing robustness, highlighting a focus on scalable, data-centric infrastructure. Based in Vienna, he brings a pragmatic blend of technical depth, cross-cultural collaboration, and long-term platform thinking.
11 years of coding experience
8 years of employment as a software developer
Vienna University of TechnologyHelsinki University of Technology
English
Stackoverflow
337reputation
37kreached
1answer
6questions
Github Skills (33)
algorithm10
algorithms10
c-language10
imap10
testing10
http10
c1110
c1710
jmap10
query-parser10
mailserver10
go10
parse10
xml10
webdav10
Programming languages (13)
Github contributions (5)
cyrusimap/cyrus-imapd
Apr 2017 - Jan 2023
Cyrus IMAP is an email, contacts and calendar server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:944 reviews, 598 commits, 713 PRs in 5 years 9 months
Contributions summary:Robert Stepanek's contributions primarily focused on enhancing the Cyrus IMAP server's functionality. He implemented features related to JMAP (JSON Meta Application Protocol), including expiring and unlinking stale JMAP data and refactoring the JMAP state API. Additionally, he modified mailbox-related functions such as archiving, expunging, and iterators, to improve performance and add custom iterator support. These changes suggest a focus on core server logic and data management.
cyruscontactscalendaremailimap
xapian/xapian
Jan 2017 - Aug 2020
Mirror of the Xapian repository. You're welcome to open pull requests on github (they'll just get merged indirectly).
Role in this project:Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:11 commits, 10 PRs, 35 comments in 3 years 8 months
Contributions summary:Robert contributed to the Xapian search engine library by implementing snippet-related tests, including tests for exponential decay term-relevances and a flag to return empty snippets when no terms match. They also made modifications to the query parser and term generator to include CJK word boundary iterators, facilitating improved text processing. Additionally, the user addressed a bug in `GlassTable::readahead_key` that caused errors with overlong keys, demonstrating testing and debugging capabilities.
mergedpull-requestsxapianwelcome
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