Dalibor Dukić
Chief Technology Officer at Sedam IT
Croatia
Summary
👤
Senior🎓
Top SchoolDalibor Dukić is a seasoned CTO and security lead with over 12 years of hands-on experience and more than 20 years in the tech industry, driving cloud-native transformations and modern engineering practices at Sedam IT. He blends deep infrastructure and networking roots—ranging from data center design and MPLS to Kubernetes and microservices—with pragmatic leadership as both CTO and CISO. Dalibor has led large migrations from legacy monoliths to containerized, automated platforms while mentoring engineering and R&D teams to adopt DevOps, CI/CD, and secure-by-design principles. A practical open-source contributor, he’s fixed critical bugs and improved randomness and IP handling in the widely used masscan TCP scanner, reflecting attention to low-level reliability and security. Based in Croatia with a Master in Computer Engineering, he pairs broad strategic vision with detailed technical craftsmanship across Go, Java, Python and systems-level code.
12 years of coding experience
10 years of employment as a software developer
Master of Computer Engineering, Master of Computer Engineering at Sveuèilište u ZagrebuGlobal Knowledge
Github Skills (8)
c1710
ip10
port-scanning10
c1110
network-programming10
tcp10
security10
algorithms9
Programming languages (4)
Github contributions (5)
robertdavidgraham/masscan
Oct 2013 - Jan 2014
TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.
Role in this project:
Backend Developer
Backend DeveloperContributions:6 commits in 3 months
Contributions summary:Dalibor primarily focused on bug fixes and code improvements within the `masscan` project, a TCP port scanner. Their contributions involved correcting IP checksum calculations, resolving SIGSEGV errors related to IP TTL and SSL protocol handling, and fixing spelling mistakes. The user also implemented a small change to seed and randomness within the main file and syn-cookie.c
scannerpacketsport-scannersecurityasynchronously
kicdu/plivo-python
Dec 2017 - Jan 2018
Contributions:1 push, 1 branch in 5 days
pythonplivohelper-library
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