Aaron S.

Winter Park, FL, USA | Linux/BSD/UNIX Systems Engineer
TOP RATED 100% SUCCESS
$400K+ Total Earnings
12,941 Total Hours
150 Total Jobs
$65.00 Hourly Rate

Professional Profile

With over 25 years of hands-on experience in Linux (since '96), BSD (since '98), and commercial UNIX systems, I specialize in hardening, performance tuning, and legacy migrations. I bring deep expertise in system administration, low-level scripting, and infrastructure security to high-stakes enterprise projects.

"Aaron is a very good systems engineer for Linux, UNIX and Windows. He has an in depth understanding of system internals. I found him to be an honorable man that stands behind his word... He would make a good supervisor in any company."
— Shelton R., Sr. IT Consultant / DB2 DBA Expert

Core Skills

System Administration Network Security Shell Scripting (Perl/C/Bourne) Solaris/HP-UX/AIX FreeBSD/OpenBSD Kernel Customization ZFS & Hardware RAID SOX Compliance Virtualization (Zones/EC2)

Employment History

Freelance UNIX Developer | Upwork (2008 - Present)

Providing high-level consultancy for server updates, security audits, SSL installations, and complex malware removals. Specialized in migrating shared hosting environments to high-performance VPS solutions.

UNIX System Engineer | Hilton Grand Vacations (2006 - 2008)

Designed and built a custom Enterprise Data Warehouse utilizing RHEL, IBM Information Server, and Sun N1. Expertly back-ported clustering tools and GFS modules for RHEL 4. Served as the primary onsite point for HP-UX, Solaris, FreeBSD, and MacOS X operations.

UNIX Engineer | E Solutions Corporation (2008 - 2009)

Supported Tier-1 collocation facility operations. Managed daily engineering of OpenBSD, FreeBSD, and Linux environments. Identified and remediated critical network security vulnerabilities and stabilized bandwidth billing systems.

Education