Senior Systems Engineer II (Cross-Domain)

TMC Technologies•Huntsville, AL

About The Position

TMC Technologies is seeking a Senior Systems Engineer II to support a federal client. The role maintains, documents, upgrades, and patches cross-domain printing and file-transfer systems, and supports Windows and Linux printing services and Trusted Print Delivery and Trusted Gateway Services. The engineer is also responsible for Unix/Linux infrastructure design, implementation, integration, operation, security, and support across classified environments. The position requires U.S. citizenship and an active Top Secret clearance to start; the candidate must also be able to obtain an SCI-CI polygraph clearance.

Requirements

U.S. citizenship.
Active Top Secret clearance required at start.
Ability to obtain an SCI-CI polygraph clearance.
At least 6 years of Linux experience and cross-domain knowledge.
Linux Professional Certification (LPIC), CompTIA Linux+, or higher; candidates without certification may be considered but must earn certification within 6 months of hire.
Bachelor’s degree preferred.
Strong background and skills in Windows and Linux printing services.
Extensive hands-on expertise with Trusted Print Delivery and Trusted Gateway Services, such as products from Forcepoint, BAE, and Lockheed.
Knowledge of Red Hat Linux, SELinux, VI editor, Cross Domain Controlled Interfaces, automation and scripting tools, and command-line tools.

Nice To Haves

Bachelor’s degree.

Responsibilities

Engineer and configure secure data routes between domains with varying classification levels.
Ensure daily operations of the cross-domain environment.
Perform component patching, maintenance, and upgrades; document changes and verify they do not create operational or vulnerability issues.
Document current and planned cross-domain configurations.
Proactively resolve performance and operational issues and address issues as they occur.
Coordinate with security and engineering groups to ensure components are monitored and meet approved specifications.
Assist with system accreditations and resolve or mitigate security vulnerabilities, findings, and concerns.
Engineer and configure cross-domain printing and secure configurations to support obtaining authority to operate.
Design, install, implement, configure, integrate, and support Unix/Linux infrastructure.
Serve as the subject matter expert for cross-domain environments using Windows and Linux operating systems, including Red Hat, AIX, Solaris, or CentOS.
Create and maintain bare-metal and virtual machines, Linux distributions, and network configurations using tools such as Satellite Server, Puppet, and BigFix.
Provision and configure server software, including web servers and databases.
Evaluate, improve, and maintain information security across the Linux infrastructure.
Monitor and correct critical server issues and create recovery processes for failures and performance bottlenecks.
Manage and monitor installed systems and infrastructure.
Troubleshoot technical and functional issues involving DNS, DHCP, LDAP, SMTP, and integration with Windows.
Install, configure, test, and maintain operating systems, application software, and system management tools.
Proactively maintain high availability of systems and infrastructure.
Monitor and test application performance, identify potential bottlenecks and solutions, and work with developers to implement fixes.
Maintain security, backup, and redundancy strategies.
Write and maintain custom scripts to improve system efficiency and reduce manual intervention.
Participate in designing information and operational support systems.
Provide fourth-level support and liaise with vendors and IT personnel to resolve problems.
Maintain current technical documentation and monthly system inventories, including hostnames, property numbers, IP addresses, enclave, processor and core counts, admin passwords, certificates, and service accounts.
Integrate systems with Windows for authentication and core-service dependencies such as single sign-on and Active Directory.
Engineer and implement multifactor authentication solutions using standardized software and hardware.
Document system configurations, including passwords, access controls, version and revision numbers, patch levels, inventory, TCP/IP addresses, processor and core counts, memory, and license keys.
Transfer knowledge to government staff through training and assistance on technology use and industry best practices.