Dragan Dosen
Senior Software Engineer at HAProxy Technologies
Zagreb, Croatia
Summary
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SeniorDragan Dosen is a Senior Software Engineer based in Zagreb with 11+ years designing and maintaining Linux-first systems and high-performance networking software. At HAProxy Technologies since 2014 he focuses on backend engineering, bug fixes and performance-driven refactors—contributing notable improvements like LRU caching and HTTP parameter fixes to the widely used HAProxy project. His skill set spans system programming (C, C++), Go and scripting (Python, Perl, shell), plus deep Linux administration, containerization and hypervisor experience. A long-time FLOSS contributor and former Debian/CARNet maintainer, he pairs production-grade reliability with low-level troubleshooting skills honed running IRC services and university systems. He brings a pragmatic, security-conscious approach to scalable, networked applications and often finds efficiency gains by reworking core components rather than layering complexity.
11 years of coding experience
12 years of employment as a software developer
Github Skills (8)
c1710
load-balancing10
c1110
http9
refactor9
refactoring9
caching9
performance-optimization8
Programming languages (1)
Github contributions (5)
haproxy/haproxy
Feb 2022 - Feb 2022
HAProxy Load Balancer's development branch (mirror of git.haproxy.org)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 commit in 1 day
Contributions summary:Dragan primarily focused on bug fixes and code refactoring within the HAProxy load balancer. Their contributions involved resolving issues related to HTTP parameter fetching, initialization problems within the 51Degrees module, and improving performance through caching. The user also refactored the 51Degrees code and introduced features like LRU caching for User-Agent string detection.
proxycachingddos-mitigationhttp2ipv6
fkjellberg/haproxy
Jun 2017 - Feb 2022
Contributions:49 commits in 4 years 9 months
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