Senior System Administrator (Linux Admin)

Position: Senior System Administrator (Linux Admin)

Location: Irving, TX

Position Type: Fulltime

Veritas Cluster (VCS) & RAC (Real application Clusters)

Job Summary:

The Senior System Administrator (Linux Admin) provides expert-level administration, troubleshooting, and optimization for Linux server environments within the financial firm's private cloud and virtualization infrastructure. This role ensures the high availability, security, and performance of critical Linux-based systems and provides technical leadership to the team.

Key Responsibilities:

• Lead the installation, configuration, and maintenance of complex Linux server environments (e.g., RHEL, CentOS, Ubuntu).
• Design and implement scalable and resilient Linux infrastructure solutions within virtualized platforms.
• Automate Linux system administration tasks using advanced scripting (e.g., Python, Bash) and configuration management tools (e.g., Ansible, Puppet).
• Perform advanced troubleshooting for complex Linux operating system issues, performance bottlenecks, and kernel-level problems.
• Implement and enforce robust security configurations, patching strategies, and compliance measures for Linux systems.
• Manage and optimize storage, networking, and virtualization integration for Linux instances.
• Provide technical guidance, mentorship, and training to junior administrators.
• Participate in on-call rotations and lead incident response for critical Linux systems.

Required Qualifications:

• Experience: 6-8 years of extensive hands-on experience as a Linux System Administrator in a large-scale, enterprise environment, preferably financial services.
• Technical Skills: Deep expertise in Linux operating systems (kernel, file systems, networking). Advanced scripting skills (Python, Bash). Strong experience with configuration management tools (Ansible, Puppet, Chef). Expertise in virtualization technologies (VMware vSphere/ESXi). Proficient in networking (TCP/IP, DNS, bonding) and storage (LVM, SAN/NAS).
• Education: Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent practical experience. Relevant advanced certifications (e.g., RHCE, Linux Foundation Certified Engineer).
• Soft Skills: Exceptional problem-solving and diagnostic skills. Strong analytical abilities. Excellent communication and leadership skills. Ability to work under pressure and manage critical systems.