Axel Burri
Consultant at Digital Integrity GmbH
Zurich, Zurich, Switzerland
Summary
🤩
RockstarAxel Burri is a Zurich-based IT consultant and engineer with 13 years of experience delivering secure, operationally robust systems. He blends hands-on development, DevOps, and security engineering—evident from his significant contributions to btrbk where he hardened backup scripts, added compression/streaming and mitigations against SSH command injection. Comfortable in C++ back-end work as well, he has improved and documented the tinyfsm finite-state-machine library, including practical examples like elevator control. Axel favors pragmatic, auditable solutions that tighten operational security while improving efficiency, and maintains an active open-source presence focused on reliability and tooling.
13 years of coding experience
Github Skills (17)
cpp-library10
security-hardening10
c-language10
btrfs10
bash10
state-machine10
cpp10
cprogramming-language10
devops9
headeronly9
regular-expression9
backup9
cli8
command-line-interface8
command-line8
Programming languages (7)
Github contributions (5)
digint/btrbk
Dec 2014 - Dec 2022
Tool for creating snapshots and remote backups of btrfs subvolumes
Role in this project:
DevOps Engineer & Security Engineer
DevOps Engineer & Security EngineerContributions:12 reviews, 1217 commits, 58 PRs in 8 years 1 month
Contributions summary:Axel significantly contributed to the security and operational aspects of the `btrbk` repository. Their work primarily focused on hardening the `ssh_filter_btrbk.sh` script, introducing features like command-line options for fine-grained control, support for sudo/doas, and enhanced error handling to prevent unauthorized access via SSH. They also added support for compression, stream buffering, and rate limiting, improving the backup process's efficiency. Furthermore, the user addressed security vulnerabilities by correctly handling regular expressions to avoid command injection.
rsyncrestorededuplicationsnapshotsencrypted-backups
digint/tinyfsm
Nov 2012 - Jun 2022
A simple C++ finite state machine library
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 reviews, 89 commits, 3 PRs in 9 years 8 months
Contributions summary:Axel primarily contributed to the development and maintenance of a C++ finite state machine library. Their commits focused on improving the documentation, addressing bugs, and making code style adjustments. They also introduced new examples demonstrating the library's functionality, including a simple switch and a more complex elevator control system. Furthermore, the user refactored the reset functionality of the library and updated the version information.
cppfinite-statefsm-libraryc-plus-plusheader-only
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