Cristian Cimpianu
Business Development Manager And Co-Founder at C-Scale Software
Craiova, Dolj, Romania
Summary
👤
Senior🎓
Top SchoolCristian Cimpianu is a senior embedded systems engineer and co-founder with 11+ years of experience designing, implementing and delivering telecom and networking software across user and kernel space. He blends hands‑on C/C++ development under VxWorks and Linux with product and project leadership, having led distributed teams and owned end‑to‑end modules for wireless controllers, OAM protocols and device drivers. Deep expertise in standards and OAM stacks (IEEE 802.1ag, ITU‑T G.803x, Y.1731, RFC2544) pairs with practical skills in performance tuning, CI/regression testing and test‑driven development. As a maintainer and contributor to notable open‑source networking projects like xl2tpd and CoovaChilli, he has improved stability, DHCP/RADIUS flows and debugging observability. He also drives business development and technical strategy at C-Scale Software, finding new product opportunities while keeping a strong engineering focus. His academic background in theoretical physics and top academic record hint at a rigorously analytical approach to complex systems engineering.
10 years of coding experience
4 years of employment as a software developer
Master’s Degree, Theoretical Physics, Master’s Degree, Theoretical Physics at University of CraiovaColegiul National "Fratii Buzesti"
English, German, Italian
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (14)
c1710
dhcp10
l2tp10
c1110
networking10
radius10
debug9
user-authentication9
authentication9
socket9
debugging9
linux8
embedded8
sys8
Programming languages (2)
Github contributions (5)
xelerance/xl2tpd
Jun 2015 - Jan 2016
Official Xelerance fork of L2TPd
Role in this project:
Back-end Developer
Back-end DeveloperContributions:19 commits, 4 PRs, 3 comments in 7 months
Contributions summary:Cristian primarily contributed to bug fixes and memory leak resolution within the xl2tpd codebase. Their work focused on improving the stability of the software by addressing issues related to socket leaks in child processes and fixing an endless loop issue. Additionally, they added more detailed information about existing tunnels and calls within the control interface, enhancing the debugging capabilities of the system. These changes involved modifications to core network and control flow components.
l2tpdtunnelingtuntapproxy-protocolsctp
coova/coova-chilli
Aug 2015 - Jan 2016
CoovaChilli is an open-source software access controller for captive portal hotspots.
Role in this project:Back-end Developer
Back-end DeveloperContributions:15 commits, 7 PRs, 8 comments in 5 months
Contributions summary:Cristian primarily contributed to the backend functionality of the CoovaChilli project, focusing on DHCP and RADIUS authentication processes. Their work included adding support for vendor-specific DHCP options and fixing DHCP relay issues. They also implemented a feature to override the username received in an Access-Accept packet, suggesting a focus on user authentication and authorization flows. Additionally, the user fixed printing issues related to size_t data types.
hotspotscontrollerportalcaptive-portalcaptive
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