Senior Linux System Administrator- Raleigh, NC - Hybrid in Raleigh, North Carolina at INFO ORIGIN INC

Position Title Senior Linux System Administrator

Position Type Contract

Duration Long Term

Interview Type In Person

Country USA

Work Location Raleigh, NC

Work Preference Hybrid

1. Role Requirements

• 3+ years of experience in Linux Administration (Red Hat Enterprise Linux - RHEL) on AWS
• 3+ years of hands-on experience with AWS services (EC2, S3, RDS, VPC, EBS, etc.)
• 5+ years of experience with authentication systems (Active Directory, Kerberos, LDAP/LDAPS, SSSD)
• 7+ years of experience in security hardening, patching, and vulnerability management
• 3+ years of experience in automation tools (Ansible, Terraform, CloudFormation)
• Strong experience in Bash/Python scripting (7+ years preferred)
• Experience in system monitoring, performance tuning, and scaling environments
• Knowledge of networking tools (iptables, HAProxy, Linux IPVS)
• Experience working in AWS multi-account environments (Prod/Non-Prod)
• Familiarity with backup, recovery, and disaster management processes
• Linux certifications (RHCE, RHCT, LPIC) are a plus
• Willingness to be on-call (evenings/weekends)

• Install, configure, and maintain Linux (RHEL) systems on AWS/Hybrid Cloud
• Deploy and manage AWS infrastructure (EC2, S3, RDS, EBS, FSx, EFS)
• Perform system monitoring, performance tuning, and troubleshooting
• Manage user access, permissions, and security policies (RBAC, sudo)
• Execute patching, upgrades, and package management
• Implement system hardening and security best practices (STIG, CIS controls)
• Handle backup, recovery, and disaster recovery processes
• Build and maintain automation scripts and infrastructure (Ansible, Terraform)
• Troubleshoot issues including:
  • Authentication failures (Kerberos, LDAP)
  • Kernel/boot failures
  • Network and file system issues
• Collaborate with development and operations teams for deployments
• Maintain documentation (runbooks, architecture diagrams, SOPs)
• Provide technical support and ensure system stability

• Linux Administration (RHEL)
• AWS Cloud (EC2, S3, RDS, VPC, EBS, EFS, FSx, ALB, SSM)
• Shell Scripting (Bash, Python)
• Infrastructure as Code (Terraform, CloudFormation)
• Automation (Ansible)

• System Hardening (STIG, CIS benchmarks)
• SSH Hardening, Audit Logging, Vulnerability Remediation
• Identity & Access Management (AD, LDAP, Kerberos, SSSD)

• Performance Monitoring & Scaling
• Log Management & Alerting Systems
• Troubleshooting (Kernel, Network, File Systems)

• iptables
• HAProxy
• Linux IPVS

• Runbooks & SOPs
• Architecture Diagrams
• Operational Documentation