Attila Fülöp
C C Software Engineer at DataSunrise, Inc.
Szolnok, North Great Plain, Hungary
Summary
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Rockstar🎓
Top SchoolAttila Fülöp is a seasoned C/C++ software engineer with nine years of professional experience building and maintaining high-performance web and system applications across companies like DataSunrise, Uber, HP, and Ford. He specializes in backend systems and rapid web development, frequently owning full-stack responsibilities from front-end tweaks to low-level performance tuning. Notably, he contributes to the widely used open-source OpenZFS project, improving cryptographic stability and AES-GCM performance through optimized OpenSSL assembler routines and safer memory architectures. Based in Szolnok, Hungary, Attila combines pragmatic problem-solving with architectural thinking, favoring solutions that balance speed, reliability, and maintainability. He seeks roles that challenge his technical depth while enabling organizational growth and continuous personal development.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Bachelor's degree at SADAT ACADEMY for MANAGEMENT SCIENCES
Github Skills (17)
filesystem10
assembly10
openzfs10
system-programming10
x8610
aes-gcm10
performance-optimization10
x86-6410
cryptography10
assembler10
cprogramming-language10
data-structure9
algorithm9
algorithms9
security9
Programming languages (4)
Github contributions (5)
openzfs/zfs
Jul 2019 - Jan 2023
OpenZFS on Linux and FreeBSD
Role in this project:
Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:73 reviews, 42 commits, 29 PRs in 3 years 7 months
Contributions summary:Attila's contributions primarily revolve around improving the performance and stability of the OpenZFS file system's core cryptographic operations. They addressed critical bugs such as null pointer dereferences and out-of-bounds writes within the ICP (Integrated Cryptographic Provider) module. Furthermore, they significantly enhanced AES-GCM performance through optimization and the incorporation of highly optimized OpenSSL assembler routines. The user also made architectural improvements by dynamically allocating the hash subkey table, thereby enhancing flexibility.
openzfstarballlinuxfreebsdsystem-software
AttilaFueloep/zfs
Jul 2019 - Mar 2025
ZFS on Linux - the official OpenZFS implementation for Linux.
Contributions:140 pushes, 43 branches in 5 years 9 months
openzfslinuxzfsinitramfsluks
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