ECS is seeking a Principal Systems Engineer II (Unix/Linux) to work in our Pocatello, ID office.
The Contractor shall be responsible for the design, deployment, testing, certification, patching, addressing interoperability issues, not only of the base operating system, but for all support libraries, components, and application dependencies.
Position requirements and duties of the Principal Systems Engineer II (Unix/Linux)
- Serve as the advanced knowledge expert for all Linux environments.
- Create and maintain bare-metal and virtual machines with the appropriate distribution of Linux and network configuration, using tools that include Satellite Server, Ansible and BigFix.
- Provision/configure the required software onto servers, such as web servers and databases.
- Evaluate, improve, and maintain the information security throughout the Linux infrastructure.
- Monitor and correct server issues and process for failures and performance bottlenecks.
- Manage and monitor all installed systems and infrastructure.
- Possess excellent knowledge base in DNS, DHCP, LDAP, SMTP, and integration with Windows to solve technical and functional issues.
- Install, configure, test, and maintain operating systems, application software and system management tools.
- Proactively ensure the highest levels of systems and infrastructure availability.
- Monitor and test application performance for potential bottlenecks, identify possible solutions, and work with developers to implement those fixes.
- Maintain security, backup, and redundancy strategies.
- Write and maintain custom scripts to increase system efficiency and lower the human intervention time on any tasks.
- Participate in the design of information and operational support systems.
- Provide 4th level support.
- Build new baselines with the appropriate security and access controls to include DISA STIGS and required security controls. Updated baselines will be required quarterly and new versions within 90 days of the manufacturer’s release to production and full DISA STIGS.
- Engineer multi factor authentication between Linux environments and the enterprise Windows infrastructure components.
- Engineer solutions for baselines to operate in full standalone mode, domain mode, and fully integrated mode for all classification levels and enclaves.
- Work with the developers to transition applications from one platform to another to include from physical to virtual and virtual to cloud.
- Work with security components to resolve any security findings or vulnerabilities and apply fixes or updates as well as solutions to achieve closure.
- Liaise with vendors and other IT personnel for problem resolution.
- Ensure technical documentation exists for all systems and is kept up to date to include inventory and patch levels of all systems to include hostnames, property numbers, IP addresses, enclave, number of cores, number of processors, admin passwords, certificates, and service accounts on a monthly interval.
- Integrate systems with Windows as it applies to authentication and core services dependencies such single sign-on and Active Directory. Engineer and implement solutions for multi factor authentication with FBI standardized software and hardware.
- Document system configurations to include passwords, access controls, version number, and revision numbers, patch levels, and inventory to include hostnames, TCP/IP addresses, number of processors, and number of cores, memory, and license keys.
- Continually transition knowledge to the Government staff through training and assistance on how to use the technology using industry best practices.
- Must have a current Top-Secret Clearance with the capability of obtaining SCI / CI-Poly if needed to meet contract requirements.
- Minimum of Red Hat Certified Systems Administrator (RHCSA) or higher certification.
- 8 years of experience required.
- Systems Engineer skill set with focus on Unix/Linux based systems such as Red Hat Linux and Oracle Linux.
Skills Required
- Current Top-Secret clearance with ability to obtain SCI/CI-Poly
- Minimum 8 years of relevant experience
- Red Hat Certified Systems Administrator (RHCSA) or higher
- Expertise with Red Hat Enterprise Linux and Oracle Linux
- Experience with Satellite Server (patching/configuration management)
- Experience with Ansible automation
- Experience with BigFix
- Strong knowledge of DNS, DHCP, LDAP, SMTP, and Windows integration/Active Directory
- Experience implementing and maintaining DISA STIG baselines and security controls
- Experience with virtualization and cloud migrations
- Ability to write and maintain custom scripts to automate tasks
- Experience with monitoring, backup, redundancy strategies, and 4th-level support
ECS Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ECS and has not been reviewed or approved by ECS.
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Healthcare Strength — ECS advertises multiple national-network medical plan options with HSA eligibility alongside dental and vision coverage. Coverage generally begins quickly and is paired with company-paid short- and long-term disability, adding stability to the health package.
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Retirement Support — A 401(k) with Safe Harbor and immediate vesting on employer contributions is emphasized, with an employer match available. Access to an employee stock purchase plan via the parent company provides an additional savings avenue.
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Parental & Family Support — Paid parental leave up to 30 days, adoption assistance, and other family-oriented leaves are highlighted. Feedback suggests these offerings add meaningful value beyond base pay for many roles.
ECS Insights
What We Do
ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries. ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies. Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.

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