Ariel Abreu is an Information Security Engineer with 11 years of hands-on experience securing networks, systems, and data across healthcare, hospitality, and enterprise environments. Based in Jacksonville, he combines operational IT administration (VMware, Hyper-V, Windows Server, Sophos stack) with active incident detection and response work using SIEM and Darktrace, and has led rapid data center recovery efforts. Ariel brings practical systems-level development experience from open-source projects—contributing kernel-like syscall stubs and networking improvements to the Darwin-on-Linux Darling project and building a VirtIO block driver for runtime.js—which reflects a rare blend of security, systems engineering, and low-level back-end coding. He’s comfortable under pressure, skilled at translating technical risk to leadership, and regularly designs training and compliance programs (PCI, GDPR) to reduce organizational exposure.
11 years of coding experience
5 years of employment as a software developer
Computer Science Engineer - Software Developer, Computer Science, University Degree, Computer Science Engineer - Software Developer, Computer Science, University Degree at Universidad de las Ciencias Informáticas
Contributions:2 releases, 16 reviews, 679 commits in 2 years 10 months
Contributions summary:Ariel made several contributions towards implementing and improving the Darling project, a Darwin/macOS emulation layer for Linux. The user added stub implementations for several system calls, including those related to file management and code signing, indicating an effort to improve the system's compatibility. They also implemented functionalities for system calls to retrieve information about the current architecture and added support for new networking capabilities.
[not maintained] Lightweight JavaScript library operating system for the cloud
Role in this project:
Back-end Developer
Contributions:29 commits, 35 PRs, 73 pushes in 7 months
Contributions summary:Ariel primarily contributed to the development of a block device driver for the runtime.js project. Their work included implementing a VirtIO block device driver using JavaScript, involving interaction with PCI devices, queue management, and the creation of a disk interface. The user demonstrated significant effort in building core functionalities like reading and writing to disk sectors and integrating the driver into the runtime environment. The commits show the user's progression, iterating through different approaches and refining the disk API.
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