Senior Linux Administrator
About The Position
DDC is seeking a Senior Linux Administrator to support a mission-critical federal financial systems environment running on enterprise Linux. This role is responsible for maintaining and improving the performance, security, reliability, and availability of Linux servers supporting Oracle-based financial applications and databases across production and non-production environments. The Senior Linux Administrator will lead efforts in system hardening, patching, automation, monitoring, troubleshooting, and backup/recovery, and will provide technical support for migrating Linux-based systems from on-premises infrastructure to AWS, including the use of Infrastructure as Code and modern automation practices. This position is contingent upon contract award.
Requirements
- Senior-level experience administering enterprise Linux environments (physical and virtual). (Minimum 10 years of experience.)
- Strong experience with automation and configuration management (e.g., Ansible, Puppet, Chef) and scripting (Bash, Python, etc.).
- Experience supporting cloud migration to AWS and working with AWS infrastructure services.
- Experience with monitoring, capacity planning, troubleshooting, patching, and security hardening in regulated environments.
- Ability to support environments subject to federal security requirements (e.g., NIST/FIPS-aligned practices) and participate in audit/security support activities as needed.
- Strong documentation and communication skills; able to work with government and contractor teams in a hybrid environment.
- Must be able to obtain and maintain SBA suitability/Public Trust, PIV access, and access to SBA systems as required.
Nice To Haves
- AWS certifications are preferred but not mandatory
Responsibilities
- Manage complex, enterprise Linux environments with focus on performance, stability, security, and automation.
- Install, configure, and maintain physical and virtual Linux servers and operating systems.
- Provide Linux administration support for Oracle Federal Financials environment, database, and mid-tier administration to ensure confidentiality, integrity, and availability (targeting 99.5%+ availability).
- Perform patch management, vulnerability management, baseline configuration, and OS hardening.
- Monitor systems for performance and availability, respond to alerts/outages, and support troubleshooting to resolution.
- Develop and maintain automation using scripts (Bash/Python/Perl) and tools such as Ansible/Puppet/Chef.
- Support backup/recovery and storage management for Linux OS environments (instance creation/modification as needed).
- Support AWS migration of Linux-based systems from on-prem to AWS.
- Support configuration/deployment of AWS compute, storage, and networking services.
- Design and implement Infrastructure as Code (IaC) to automate provisioning/configuration of AWS infrastructure; implement automation pipelines for deployment/updates.
- Coordinate with development/application teams to support CI/CD pipelines, deployments, and integrations.
- Maintain documentation of processes/configurations and assist in documenting undocumented processes.
- Perform other duties as required.
Benefits
- medical, dental, vision, life and disability coverage
- retirement savings with company match
- paid time off
- voluntary supplemental benefits
- access to an employee assistance program
- educational assistance with tuition reimbursement
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What This Job Offers
Job Type
Full-time
Career Level
Senior
