Maria Sfiraiala
System Engineer at Unikraft
Bucharest, Romania
Summary
🤩
Rockstar🎓
Top SchoolMaria Sfiraiala is a systems engineer and cybersecurity MEng student based in Bucharest with four years of hands-on experience in low-level systems and unikernel development. As a Unikraft maintainer and core contributor, she has fixed critical musl/x86 issues, ported complex applications like SQLite/Redis/Nginx, and improved kernel syscalls to prevent infinite loops and boost performance. She also teaches operating systems and data structures at University POLITEHNICA of Bucharest, combining pedagogy with active mentoring of GSoC contributors on security tracks. Previously she built MacOS telemetry tooling at Bitdefender and interned in tech ops at Jump Trading, demonstrating an ability to move between research-grade systems work and production telemetry/ops. Co-founder of calculatoristul.ro and an active contributor to the prominent unikraft project, she brings a rare blend of kernel-level engineering, teaching experience, and practical security focus.
4 years of coding experience
1 year of employment as a software developer
High School Diploma, Mathematics and Computer Science, 9.88/10, High School Diploma, Mathematics and Computer Science, 9.88/10 at Tudor Vianu National College of Computer SciencePOLITEHNICA București National University for Science and Technology
English, Romanian
Github Skills (20)
od10
filesystem10
c1110
c1710
kernel10
system-calls10
ed2551910
arm10
unikernel10
operating-system10
assembly9
subprocess9
python9
clang8
makefile8
Programming languages (9)
Github contributions (5)
unikraft/unikraft
Sep 2022 - Jan 2023
A next-generation cloud native kernel designed to unlock best-in-class performance, security primitives and efficiency savings.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:97 reviews, 5 commits, 9 PRs in 3 months
Contributions summary:Maria primarily contributed to the core functionality of the unikraft kernel, focusing on low-level system calls and file system operations. They replaced existing library function calls with unikraft syscalls to avoid infinite loops and improve performance. Additionally, they fixed an issue with the `lstat()` function, addressing an infinite loop problem in the context of musl and x86 architectures. They also made modifications to the build process to be compatible with clang.
kernelposix-compliantvirtualizationmicroserviceposix
open-education-hub/operating-systems
Dec 2022 - Jan 2023
Teaching resources (OER) for Operating Systems
Role in this project:Backend Developer
Backend DeveloperContributions:2 reviews, 9 commits, 5 PRs in 1 month
Contributions summary:Maria contributed to the operating systems teaching resources by addressing specific issues and enhancing the learning materials. They fixed a bug in the arena software stack related to AArch64 bss sections, improving compatibility. The user also replaced `sleep()` calls with `wait()` for clearer demonstrations of subprocess management in the compute lab, and fixed pylint errors. Furthermore, the user added SPDX licenses to all files and updated ltrace usage.
openeduoperating-systemsoperating-systemteachingsystem-programming
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