Senior Linux Administrator - AWS Cloud Migration Lead

SFE

California

On-site

USD 120,000 - 170,000

Full time

9 days ago

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Job summary

SFE in Irvine, CA is seeking a Linux Administrator to join a full-time onsite team. The role focuses on migrating and operating Unix/Linux servers in a large enterprise, with hands-on duties spanning RHEL provisioning, patching, security hardening and performance tuning.

The ideal candidate will have extensive AWS experience (EC2, VPC, IAM, CloudWatch) and proven ability to work with Java and .NET deployments, middleware, and cross-functional infrastructure teams during migration and

Qualifications

7+ years of Unix/Linux administration experience, with 2–3 years on AWS.
Strong experience with RHEL 7/8/9, OS installation, patching, and lifecycle management.
Experience with OS hardening, security baselines, and access controls.
Experience supporting Java and .NET applications.
Experience migrating on-prem to cloud; familiarity with AWS services (EC2, EBS, VPC, IAM, CloudWatch).
Exposure to DevOps practices and CI/CD pipelines impacting OS-level operations.

Responsibilities

Lead migration of Unix/Linux servers from on premises data centers to AWS EC2.
Provision, configure, patch and upgrade AWS-hosted instances.
Implement OS hardening and security controls across environments.
Support deployments and troubleshoot OS issues for Java and .NET workloads.
Coordinate with cloud, database and middleware teams during migration and cutover activities.
Ensure system availability, performance and stability during migration and steady-state operations.
Automate routine administration tasks using scripting and configuration best practices.
Maintain system documentation, runbooks and operational procedures.