Andrzej Trawinski
Telecom Architect & Co-Founder at jtendo
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolAndrzej Trawinski is a telecom architect and co-founder with 14+ years delivering mobile network and telco security solutions across more than 20 countries. Since co-founding jtendo in 2010 he has led design and delivery of intelligent network services that merge traditional telco capabilities with internet-era architectures. His hands-on background spans 2/3/4/5G, SS7, Diameter, SIP, GTP and Erlang-based systems, informed by earlier roles in roaming, VAS and project leadership at major operators. Known for logical problem-solving and critical thinking, he combines fast, organized responses with a strong focus on security and data analysis. He has built a distributed team of 60+ engineers and partnerships with a dozen operators, positioning jtendo for global expansion. Based in Warsaw with an engineering degree from Politechnika Warszawska, he blends entrepreneurial drive with deep operational telecom expertise.
14 years of coding experience
8 years of employment as a software developer
Warsaw University of Technology
Github Skills (31)
erlang9
ncurses8
icmpv66
igmp5
tcp5
ipv45
ethernet5
udp4
sctp4
icmp4
chrome-extension4
dlt4
ipv64
arp4
network-protocol3
Programming languages (2)
Github contributions (5)
systra/pkt
Mar 2017 - Aug 2025
Contributions:4 pushes, 1 branch in 8 years 6 months
protocol-libraryerlangnetwork-protocol
systra/erlang_user_utils
Aug 2015 - Apr 2019
Contributions:14 commits, 13 pushes, 1 branch in 3 years 8 months
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