Job Requirements
Springfield, VA
Intel Agency (NSA, CIA, FBI, etc) CI Polygraph
Mid Level Career (5+ yrs experience)
Salary not specified
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Job Description
Dexian/SignatureFederal has an opportunity available for a SE Linux Based MLS (security enhanced Linux based multi-level security) Linux Administrator SME to provide services in support of a defense customer. The Linux Administrator will provide support on Red Hat Enterprise Linux (RHEL) based configuration, policy, and development projects including full automation of configuration deployments.
The Linux Administrator will:
• Develop, configure, and maintain integrated Red Hat Enterprise Linux/SE Linux Mandatory Access Control (MAC) configurations across multiple systems, networks, and NAS storage.
• Work closely with the Dev/Sec/Ops automation development team to deploy RHEL SE Linux MLS configurations based on site specific input files.
• Work closely with the security team to ensure RMF, RTB, and other security controls are met and fully documented.
• Manage impacts to system HPC performance ensuring minimal impacts.
• Apply best practices in software engineering, delivering projects on time and with excellent quality.
• Provide support to staff and end users to resolve issues in deployed configurations.
• Modify existing software to correct errors and/or improve performance.
• Ensure InfiniBand high speed fabrics operate correctly with MAC labeling.
• Ensure MLS networking meets controls requirements.
Qualifications (must possess a majority of experience listed)
• Minimum of 10 years of work experience, including a minimum of five (5) years of experience developing system software in heterogeneous, multi-platform environments.
• Proficiency with all aspects of SE Linux configuration, policy, MAC labeling, Security contexts, debugging policy issues, MLS FreeIPA, MLS Ethernet interface networking, developing least access policies, etc.
• Proficiency in Bourne/Bash and Expect scripting.
• Proficiency in debugging issues with the Linux kernel including examining source code, system logs, and using tools such a crash and systemtap.
• Experience with managing Satellite repositories to apply patches and build custom kernels as required to implement functionality or address security concerns.
• Familiarity with automating approaches to configuring and maintaining (e.g. patching) systems using Ansible and Satellite Server.
• Understanding and experience working with identity management systems including LDAP and token-based authentication systems.
• Excellent communication, task prioritization, and problem-solving skills.
Desired Skills
• Familiarity with High Performance Computing (HPC) environment and related technologies.
• Familiarity with Infiniband or Omni-Path high speed fabrics, including subnet management, IPoIB and/or IPoOPA mechanisms, fabric topology and health monitoring and integration with MPI.
• Experience with Lustre, NFS, and other direct attach file systems.
• Experience with Ethernet networking.
• Experience with RDMA communications (InfiniBand and OmniPath).
• Knowledge of Python, Perl, Korn, and other shell scripting.
• Experience with revision control software (CVS, SVN, Git).
• Demonstrated ability to analyze, debug and maintain the integrity of an existing scripting base.
This position requires an active TS/SCI with Poly security clearance for consideration
Education
Bachelor’s degree in computer science or an AIS degree required.
Location
The work associated with this position will be performed onsite at a designated customer location in Springfield, VA.
Benefits
Dexian/SignatureFederal offers excellent benefits including Health, Vision, and Dental insurance, matching 401k, and generous PTO/holidays.
Dexian/SignatureFederal is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, sexual orientation, gender identity, age, national origin, ancestry, citizenship, disability, or veteran status.
The Linux Administrator will:
• Develop, configure, and maintain integrated Red Hat Enterprise Linux/SE Linux Mandatory Access Control (MAC) configurations across multiple systems, networks, and NAS storage.
• Work closely with the Dev/Sec/Ops automation development team to deploy RHEL SE Linux MLS configurations based on site specific input files.
• Work closely with the security team to ensure RMF, RTB, and other security controls are met and fully documented.
• Manage impacts to system HPC performance ensuring minimal impacts.
• Apply best practices in software engineering, delivering projects on time and with excellent quality.
• Provide support to staff and end users to resolve issues in deployed configurations.
• Modify existing software to correct errors and/or improve performance.
• Ensure InfiniBand high speed fabrics operate correctly with MAC labeling.
• Ensure MLS networking meets controls requirements.
Qualifications (must possess a majority of experience listed)
• Minimum of 10 years of work experience, including a minimum of five (5) years of experience developing system software in heterogeneous, multi-platform environments.
• Proficiency with all aspects of SE Linux configuration, policy, MAC labeling, Security contexts, debugging policy issues, MLS FreeIPA, MLS Ethernet interface networking, developing least access policies, etc.
• Proficiency in Bourne/Bash and Expect scripting.
• Proficiency in debugging issues with the Linux kernel including examining source code, system logs, and using tools such a crash and systemtap.
• Experience with managing Satellite repositories to apply patches and build custom kernels as required to implement functionality or address security concerns.
• Familiarity with automating approaches to configuring and maintaining (e.g. patching) systems using Ansible and Satellite Server.
• Understanding and experience working with identity management systems including LDAP and token-based authentication systems.
• Excellent communication, task prioritization, and problem-solving skills.
Desired Skills
• Familiarity with High Performance Computing (HPC) environment and related technologies.
• Familiarity with Infiniband or Omni-Path high speed fabrics, including subnet management, IPoIB and/or IPoOPA mechanisms, fabric topology and health monitoring and integration with MPI.
• Experience with Lustre, NFS, and other direct attach file systems.
• Experience with Ethernet networking.
• Experience with RDMA communications (InfiniBand and OmniPath).
• Knowledge of Python, Perl, Korn, and other shell scripting.
• Experience with revision control software (CVS, SVN, Git).
• Demonstrated ability to analyze, debug and maintain the integrity of an existing scripting base.
This position requires an active TS/SCI with Poly security clearance for consideration
Education
Bachelor’s degree in computer science or an AIS degree required.
Location
The work associated with this position will be performed onsite at a designated customer location in Springfield, VA.
Benefits
Dexian/SignatureFederal offers excellent benefits including Health, Vision, and Dental insurance, matching 401k, and generous PTO/holidays.
Dexian/SignatureFederal is an Equal Opportunity Employer that recruits and hires qualified candidates without regard to race, religion, sex, sexual orientation, gender identity, age, national origin, ancestry, citizenship, disability, or veteran status.
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