João Filho
Debian Developer at Universities
Federal District, Brazil
Summary
🤩
RockstarJoão Filho is a Debian Developer and educator with 19 years of experience combining open source software engineering, teaching, and technical authorship from Brasília. A retired Brazilian Army officer and aviator, he brings disciplined systems thinking to network, security, and forensics challenges while lecturing in postgraduate courses and participating in the Free Software movement since the late 1990s. He contributes to notable tooling such as the axel download accelerator—adding IPv6 support, hardening against buffer overflows, and improving HTTP redirection handling—demonstrating practical back-end expertise. As a prolific author with Novatec Editora and long-term Debian contributor, he blends hands-on C-level fixes with clear technical communication for students and practitioners. His cross-domain background makes him especially effective at translating complex security and networking concepts into reliable, production-ready solutions.
19 years of coding experience
English, Portuguese, Spanish
Stackoverflow
81reputation
32kreached
1answer
1question
Github Skills (14)
c1710
c1110
networking10
download-manager9
ipv69
acc8
accelerator8
acceleration8
lit8
tcpdump6
php6
offset6
packet-sniffer6
packet-capture6
Programming languages (12)
Github contributions (5)
axel-download-accelerator/axel
Oct 2015 - Jan 2020
Lightweight CLI download accelerator
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 releases, 220 commits, 12 PRs in 4 years 3 months
Contributions summary:João contributed to the Axel download accelerator project by implementing IPv6 support and allowing external configuration of compiler flags. They fixed a potential buffer overflow issue and updated the project homepage and versioning information. The user also addressed a bug related to HTTP redirection handling and fixed an incorrect unit of time displayed in the download summary.
downloaderlightdownload-acceleratorftpaccelerator
dmhowcroft/extForkMagic
Apr 2013 - Dec 2018
Contributions:18 commits in 5 years 8 months
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