Juha-matti Tilli
Senior Software Developer at Goodmill Systems Ltd.
Espoo, Finland
Summary
👤
Senior🎓
Top SchoolJuha-matti Tilli is a senior software developer in Espoo with nine years of professional experience building high-performance, portable user-space networking and packet-processing systems for industries from consumer security to defense. He blends deep academic rigor from Aalto University with hands-on engineering at Nokia, F-Secure, Foreca and Goodmill, where he authored a unique multi-link traffic duplication system (GTD-4) and high-throughput router software that runs well even on low-power ARM devices. His work spans compilers, DSLs, protocol parsers and bytecode engines—he developed YaLe (a high-performance protocol parser generator), stirmake and custom bytecode-compiled expression engines used in production services. A security-minded researcher as well, he discovered and responsibly disclosed major TCP/IP vulnerabilities and has won competitive research funding and industry bounties. Colleagues describe him as a practical systems inventor who prefers user-space performance engineering over kernel constraints and designs solutions built to be maintainable decades into the future.
9 years of coding experience
11 years of employment as a software developer
Doctor of Science in Technology, Networking technology, Doctor of Science in Technology, Networking technology at Aalto UniversityOlari High SchoolMaster of Science in Technology, Electrical engineering, 5, Master of Science in Technology, Electrical engineering, 5 at Aalto-yliopisto
Finnish, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (63)
pcap10
packet10
networking10
vlan10
tcp10
juniper10
software-defined-radio10
freebsd9
proxy9
nfv9
dataplane9
ospf9
bgp9
dpdk9
carrier8
Programming languages (4)
Github contributions (5)
Aalto5G/pptk
Mar 2017 - Nov 2022
Packet processing toolkit
Contributions:556 commits, 226 PRs, 179 pushes in 5 years 8 months
packetsoftware-defined-radiopacket-processingpcap
jmtilli/mwrr
May 2018 - Mar 2026
Contributions:23 pushes, 1 branch in 7 years 11 months
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