Geir Istad
Engineering Technical Leader at Cisco
Oslo, Norway
Summary
🤩
Rockstar🎓
Top SchoolGeir Istad is an engineering technical leader based in Oslo with 11 years of hands-on experience designing embedded systems and bridging hardware/software interactions. At Cisco he progressed from software engineer to technical leader, driving secure, production-grade implementations and mentoring teams. He blends low-level embedded expertise with backend security work—evidenced by contributions to the widely used libsrtp project where he improved memory-clearing and fixed security-sensitive code paths. His background includes leading electronics for a student racing team and academic demonstrator roles, reflecting a practical, systems-minded approach to problem solving and teaching. Known as a software tinkerer, he favors clean, auditable code and pragmatic improvements that reduce vulnerability surface while improving maintainability.
11 years of coding experience
7 years of employment as a software developer
High School Studies Norwegian Language History, High School Studies Norwegian Language History at Folkeuniversitet VestfoldMaster of Engineering (MEng) Electrical and Electronics Engineering, Master of Engineering (MEng) Electrical and Electronics Engineering at University of AberdeenPre-university Course for Engineering and Maritime Studies Norwegian Mathematics Physics English Social studies Chemistry, Pre-university Course for Engineering and Maritime Studies Norwegian Mathematics Physics English Social studies Chemistry at University of South-Eastern NorwayElectronics Studies (Videregående Kurs Elektronikk), Electronics Studies (Videregående Kurs Elektronikk) at Kilden Videregående SkoleFundamental Electrical Studies (Grunnkurs Elektro), Fundamental Electrical Studies (Grunnkurs Elektro) at Sandefjord Videregående Skole
English, Norwegian
Github Skills (7)
c1710
srtp10
memory-management10
c1110
cryptography10
security10
documentation8
Programming languages (1)
Github contributions (5)
cisco/libsrtp
Jan 2017 - Jun 2021
Library for SRTP (Secure Realtime Transport Protocol)
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:155 commits, 66 PRs, 18 pushes in 4 years 5 months
Contributions summary:Geir primarily focused on enhancing the security and stability of the SRTP library. Their contributions involved refactoring code to use memory-clearing functions like `OPENSSL_cleanse()` and `srtp_cleanse()` to prevent the leakage of sensitive information. They also addressed code vulnerabilities by fixing function signatures and removing redundant or unnecessary code, enhancing code readability by cleaning up whitespace and formatting. Furthermore, the user improved the documentation by adding and correcting parameter descriptions.
securerealtimelibsrtprtpsrtp
thisisG/libsrtp
Jan 2017 - Jun 2021
Library for SRTP (Secure Realtime Transport Protocol)
Contributions:56 pushes, 76 branches in 4 years 5 months
securerealtimedtlswebtransportsrtp
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