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Senior Linux System Administrator on AWS platform

Siritech Solutions Corp

Raleigh, NC

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JOB DETAILS
JOB TYPE
Contractor
SKILLS
Administrative Skills, Amazon Elastic Compute Cloud (EC2), Amazon Simple Storage Service (S3), Amazon Web Services (AWS), Ansible, Authentication, Automation, Bash Scripting, Best Practices, Booting, Cloud Computing, Documentation, Firewalls, Identify Issues, Kerberos, LDAP (Lightweight Directory Access Protocol), Linux Administration, Linux Operating System, Metrics, Microsoft Active Directory, NFS (Network File System), Onboarding, Operating Systems, Performance Analysis, Python Programming/Scripting Language, Red Hat Linux Operating System, Reporting Dashboards, SSH (Secure Shell), Scripting (Scripting Languages), Software Patches, Systems Administration/Management, Unix Shell Programming, iptables
LOCATION
Raleigh, NC
POSTED
20 days ago
  • Strong experience with Linux administration experience with Red Hat Enterprise Linux: RHEL on AWS platform
  • Architect, implement, and manage enterprise-grade authentication for Linux servers using Active Directory, SSSD, Kerberos, and LDAP/LDAPS.
  • Hands-on experience in performance monitoring enablement to manage the Scaling up and down of the environments
  • Apply STIG/hardening, manage OS-level firewalls, patching cycles, CIS controls, audit logging, SSH hardening, and vulnerability remediation.
  • Build and maintain automation using Ansible, shell scripting, and Infrastructure-as-Code (Terraform/CloudFormation).
  • Administer EC2 Linux instances across multiple AWS accounts (Prod / Non-Prod).
  • Experience with cloud infrastructure, specifically Amazon Web Services (AWS) like VPC, EC2, S3, RDS, ALB, SSM and EBS.
  • Troubleshoot authentication failures (Kerberos, LDAP), boot failures, kernel panics, network issues, file system issues (AWS ONTAP FSX/EBS/EFS).
  • Implement proactive alerting, metric dashboards, and log ingestion pipelines.
  • Strong scripting skills, specifically in Bash or Python
  • Create and maintain runbooks, architecture diagrams, troubleshooting guides, automation documentation, and onboarding materials for Linux operations.
  • Proficient with network tools such as iptables, Linux IPVS, HAProxy, etc
  • Experience with security best practices and implementing security controls in a AWS cloud environment
  • Linux certifications (RHCT, RHCE and LPIC) will be considered an advantage


About the Company

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Siritech Solutions Corp

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