Riza Sulistyo
Software Scientist at Teluu
Special capital Region of Jakarta, Indonesia
Summary
🤩
Rockstar🎓
Top SchoolRiza Sulistyo is a Software Scientist with 13 years of experience building high-availability telecommunications and backend systems, currently contributing at Teluu. He brings deep C/C++ expertise (5+ years), strong background in network and multithreaded programming, and hands-on experience with PLSQL/TSQL, Perl and Java. Riza has designed and maintained critical telco components (HLR/SMSC, MSC, DCCA) and payment/top-up integrations using ISO8583, SS7 and Diameter, pairing protocol-level knowledge with production support skills. He is an active backend contributor to the well-known PJSIP project, where he improved TLS and TURN-over-TCP support, fixed memory leaks, and advanced Windows ARM compatibility. Reliable under operational pressure, he has led teams and delivered L3 support while juggling multiple priorities. Curious and fast-learning, he combines low-level systems craftsmanship with practical operator-aware engineering.
13 years of coding experience
11 years of employment as a software developer
Computer Science, Computer Science at Institut Teknologi Bandung (ITB)
English
Stackoverflow
101reputation
3kreached
7answers
0questions
Github Skills (24)
c-language10
tls1210
sipjs10
tls1310
network-programming10
sip10
sips10
cprogramming-language10
sipp10
architecture9
debugging9
cryptography9
performance-optimization9
architectures9
linux8
Programming languages (3)
Github contributions (5)
pjsip/pjproject
Nov 2012 - Jan 2023
PJSIP project
Role in this project:
Back-end Developer & Network Engineer
Back-end Developer & Network EngineerContributions:5 releases, 506 reviews, 100 commits in 10 years 3 months
Contributions summary:Riza's contributions primarily focused on enhancing the PJSIP project, particularly in the area of networking and transport protocols. Their work involved modifying the code to support the new Transport Layer Security (TLS) and TURN-over-TCP features. Additionally, they addressed vulnerabilities by correcting issues in the codebase, such as memory leaks, and added improvements for compatibility with Windows ARM platforms.
pjsipsiprtpnat-traversalvoip
trengginas/pjproject_fork
Jun 2023 - Jan 2026
PJSIP project Fork
Contributions:2 PRs, 21 pushes, 5 branches in 2 years 7 months
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