Arena Technical Resources, LLC (ATR)
Job Title: Linux SME
Location: Bethesda, MD, ICC-B – Onsite, SCIF Environment
Eligibility: TS/SCI with CI Polygraph (Full Scope Poly preferred)
Contract Type: Contingent Upon Award, this will be available in the next few weeks.
Job Description: We are seeking an experienced Linux Subject Matter Expert (SME) to provide advanced systems engineering and operational support for Dedicated Cross Domain Infrastructure within a secure Defense Intelligence Agency (DIA) environment. This role is embedded with our Cross Domain Solutions (CDS) team and is responsible for maintaining, hardening, troubleshooting, and optimizing Linux-based systems across multiple domains and mission enclaves.
The ideal candidate will have a deep understanding of
Red Hat Enterprise Linux (RHEL) ,
system hardening
( STIG ), cross domain
security architectures , and the
accreditation processes
necessary to support Top Secret/Sensitive Compartmented Information (TS/SCI) systems.
Key Responsibilities:
- Lead system engineering, patching, configuration, and lifecycle maintenance of RHEL/CentOS/Oracle
Linux systems
supporting CDS environments.
- Implement and maintain DISA STIG-compliant baselines using automation
tools (e.g.,
Ansible ,
SCAP ,
Puppet ).
- Collaborate with CDS engineers, Information Assurance personnel, and enclave leads to meet
ATO/RMF compliance .
- Troubleshoot kernel-level issues, performance bottlenecks, and cross-domain interface stability.
- Provide SME-level support for SE Linux, LDAP/Kerberos, and auditing solutions (e.g., syslog, Splunk forwarders).
- Manage OS provisioning, virtual infrastructure (e.g., VMware or KVM), and baseline image creation for cross-domain enclaves.
- Assist with developing and maintaining infrastructure-as-code configurations and custom scripts (Bash, Python).
- Serve as Tier III escalation for complex OS issues affecting CDS reliability or availability.
- Support enclave isolation and guard-side interface requirements under strict security policies.
- Document engineering decisions, operational procedures, and system configurations for cross-team knowledge sharing and accreditation packages.
Required Qualifications:
- U.S. Citizen with active
TS/SCI clearance and CI Polygraph
(or ability to obtain).
-
8+ years of experience administering Linux systems
in a secure, mission-critical environment.
- 3+ years supporting cross-domain or multi-enclave environments (CDS, Garrison, SMART.NeXT, CDSSF).
- Advanced knowledge of
RHEL 7/8/9 , including
system hardening
and kernel-level tuning .
- Experience with
automation frameworks
and
scripting languages ( Ansible, Bash, Python ).
- Familiarity with
RMF/ATO processes
and
audit log management .
- Strong understanding of
networking
( TCP/IP, firewalls, VLANs, DNS ) as it relates to
Linux systems .
Desired Qualifications:
- DoD 8570 IAT Level II or III certification ( Security+ CE, CASP+, CISSP ).
-
Red Hat Certified Engineer (RHCE) or similar Linux certification.
- Familiarity with CDS guard technologies (Radiant Mercury, Data Diode, Garrison, etc.).
- Experience with hypervisors and virtual infrastructure supporting isolated environments.
- Knowledge of Zero Trust, enclave segmentation, and compartmentalized architectures.
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Location: Bethesda, MD, ICC-B – Onsite, SCIF Environment
Eligibility: TS/SCI with CI Polygraph (Full Scope Poly preferred)
Contract Type: Contingent Upon Award, this will be available in the next few weeks.
Job Description: We are seeking an experienced Linux Subject Matter Expert (SME) to provide advanced systems engineering and operational support for Dedicated Cross Domain Infrastructure within a secure Defense Intelligence Agency (DIA) environment. This role is embedded with our Cross Domain Solutions (CDS) team and is responsible for maintaining, hardening, troubleshooting, and optimizing Linux-based systems across multiple domains and mission enclaves.
The ideal candidate will have a deep understanding of
Red Hat Enterprise Linux (RHEL) ,
system hardening
( STIG ), cross domain
security architectures , and the
accreditation processes
necessary to support Top Secret/Sensitive Compartmented Information (TS/SCI) systems.
Key Responsibilities:
- Lead system engineering, patching, configuration, and lifecycle maintenance of RHEL/CentOS/Oracle
Linux systems
supporting CDS environments.
- Implement and maintain DISA STIG-compliant baselines using automation
tools (e.g.,
Ansible ,
SCAP ,
Puppet ).
- Collaborate with CDS engineers, Information Assurance personnel, and enclave leads to meet
ATO/RMF compliance .
- Troubleshoot kernel-level issues, performance bottlenecks, and cross-domain interface stability.
- Provide SME-level support for SE Linux, LDAP/Kerberos, and auditing solutions (e.g., syslog, Splunk forwarders).
- Manage OS provisioning, virtual infrastructure (e.g., VMware or KVM), and baseline image creation for cross-domain enclaves.
- Assist with developing and maintaining infrastructure-as-code configurations and custom scripts (Bash, Python).
- Serve as Tier III escalation for complex OS issues affecting CDS reliability or availability.
- Support enclave isolation and guard-side interface requirements under strict security policies.
- Document engineering decisions, operational procedures, and system configurations for cross-team knowledge sharing and accreditation packages.
Required Qualifications:
- U.S. Citizen with active
TS/SCI clearance and CI Polygraph
(or ability to obtain).
-
8+ years of experience administering Linux systems
in a secure, mission-critical environment.
- 3+ years supporting cross-domain or multi-enclave environments (CDS, Garrison, SMART.NeXT, CDSSF).
- Advanced knowledge of
RHEL 7/8/9 , including
system hardening
and kernel-level tuning .
- Experience with
automation frameworks
and
scripting languages ( Ansible, Bash, Python ).
- Familiarity with
RMF/ATO processes
and
audit log management .
- Strong understanding of
networking
( TCP/IP, firewalls, VLANs, DNS ) as it relates to
Linux systems .
Desired Qualifications:
- DoD 8570 IAT Level II or III certification ( Security+ CE, CASP+, CISSP ).
-
Red Hat Certified Engineer (RHCE) or similar Linux certification.
- Familiarity with CDS guard technologies (Radiant Mercury, Data Diode, Garrison, etc.).
- Experience with hypervisors and virtual infrastructure supporting isolated environments.
- Knowledge of Zero Trust, enclave segmentation, and compartmentalized architectures.
#J-18808-Ljbffr