Senior Systems Engineer (Unix / Linux)
Core
Design, operate, and secure mission-critical web infrastructure on Red Hat Enterprise Linux and FreeBSD, owning the Apache web tier and ModSecurity WAF layer.
Role type
Senior Systems Engineer (Unix/Linux)
Builds
High-availability Apache HTTP Server deployments, custom C/C++ modules, and automated provisioning scripts.
Domain
Web Infrastructure / Systems Engineering
Required skills
Red Hat Enterprise Linux (RHEL 8/9) administration, FreeBSD administration, C/C++ systems programming, Apache HTTP Server architecture and tuning, ModSecurity rule writing and tuning, Bash/Python scripting, Ansible automation, TCP/IP and HTTP/HTTPS protocols, TLS/PKI, kernel parameter optimization.
Preferred skills
None stated.
Technologies
RHEL, FreeBSD, Apache HTTP Server, ModSecurity, OWASP Core Rule Set, C, C++, Bash, Python, Ansible.
Responsibilities
Install, configure, and maintain RHEL and FreeBSD servers in production, test, and DR environments; Design and operate high-availability Apache HTTP Server deployments including virtual hosts, reverse proxying, and load balancing; Deploy and tune ModSecurity with the OWASP Core Rule Set; Develop, patch, and compile Apache modules and system components in C/C++; Perform OS-level performance tuning and capacity planning; Automate provisioning and configuration with Bash/Python and Ansible; Support incident response, security audits, and compliance requirements.
Seniority
Senior, hands-on IC
