Vladimir Kotal
Software Engineer
Europe, Czech Republic
Summary
🤩
RockstarVladimir Kotal is a seasoned software engineer with 23 years of experience based in the Czech Republic, combining deep troubleshooting skills with hands‑on backend development. He contributes to high-profile open-source projects such as OpenSSL, where his fixes improved portability and stability across Solaris and compiler toolchains—work that underscores a practical focus on security-critical infrastructure. As a lecturer and mentor, he translates low-level system knowledge into teachable insights, bridging academia and production engineering. Known for digging into compilation and atomicity issues, he brings rare expertise in making cryptographic libraries robust across diverse platforms.
23 years of coding experience
Stackoverflow
195reputation
14kreached
17answers
13questions
Github Skills (21)
debug10
ssl10
tls1210
c1110
tls1310
c1710
mtls10
openssl10
cryptography10
libtls10
solaris9
compiler-optimization8
ssh6
windows6
yubikey6
Programming languages (17)
Github contributions (5)
openssl/openssl
Jun 2019 - Jul 2019
TLS/SSL and crypto library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:11 reviews, 4 commits, 28 PRs in 1 month
Contributions summary:Vladimir primarily contributed to bug fixes and code improvements within the OpenSSL project. Their work included addressing compilation issues on Solaris, optimizing the code for native atomic increment functions on Solaris, and enabling the DECLARE_DEPRECATED macro for the Oracle Developer Studio compiler. Additionally, they addressed issues by allowing to disable HTTP and fixed verification failure exits. Their contributions demonstrate a focus on improving the library's portability, stability, and adherence to compiler standards.
crypto-librarycryptographyssltlscrypto
vladak/ipv6gen
Jan 2011 - Sep 2020
IPv6 prefix generator
Contributions:11 commits, 3 PRs, 11 pushes in 9 years 9 months
twinemac-addresscidripv6-addressospf
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.