By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide.
Position OverviewBy Light has an opening for a Sr. Systems Administrator (Linux/Unix) position supporting the Army National Guard (ARNG) in Falls Church, VA. This is an IT Service Management contract in support of the operation, modernization, expansion, and further evolution of the ARNG’s global Information Technology (IT) services including networking, compute, storage, infrastructure, applications, hosting, and program management services. The GECOS program supports the ARNG enterprise IT infrastructure, its Wide Area Network (WAN), authentication and directory services, cybersecurity, application hosting, and associated services. GECOS uses ITIL best practices framework as the basis for IT Service Management (ITSM) model.
Three (3) days onsite with up to two (2) days telework. Onboarding/transition in period requires on-site support up to 60 days. GECOS work schedules are subject to change on direction by mission requirements.
Responsibilities- Provide system administration support for Linux operating systems including installing software, applying patches, managing file systems, monitoring performance, and troubleshooting alerts from monitoring tools.
- Analyzes and resolves problems associated with the operating system, servers, hardware, and applications software.
- Detects, diagnoses, and reports related problems on servers, including system failure analysis and recovery, insuring the consistency and integrity of file systems.
- In-depth hardware configuration knowledge, shell programming expertise, and a solid understanding of standard concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals, performs a variety of tasks, and works under general supervision.
- Responsible for daily monitoring of interface programs between multiple enterprise systems; review daily logs and ensure successful completion.
- Perform incremental and full cold backups/patching.
- Responsible for DoD Linux Security Technical Implementation Guides (STIGs).
- Provide performance metrics and usage charts, including CPU usage, disk usage and network uptime for the Linux Servers.
- Provide general maintenance, upgrades, and new installation of servers and coordinate with data center personnel to execute. Document and generate business processes for day-to-day and emergency support procedures.
- Install, test, and verify Linux Security patches; coordinating, documenting requirements and timelines, and working closely with service owners.
- Perform systems security administration functions, including creation and maintenance of customer profiles and accounts.
- Responsible for creating and/or maintaining standard operating procedures for the Linux documentation library.
- Implement, configure, update, and maintain Ansible servers and scripts.
- Implement, configure, update, and maintain STIG Manager servers and scripts.
- Implement, configure, update, and maintain the Linux operating system firewall.
- Experience in handling NFS, CIFS, and SMB permissions.
- High school diploma or AA. Preferred - Bachelor’s degree in information technology, computer science or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience.
- 6+ years of overall demonstrated experience as a RHEL 7 and/or RHEL 8 Servers
- Must Possess the appropriate baseline certification(s) to achieve DoD 8570.01-M Information Assurance Technical (IAT) Level II (CompTIA Security+ ce) and additional Computing Environment (CE) certification (RHEL7 and/or RHEL 8) When 8140 requirements are implemented on program/contract, employee will need to conform to 8140 certification standards
- Experience managing RHEL 7 and RHEL 8 Linux servers
- Highly versed in Linux administration and best practices
- Familiar with enterprise network architectures
- Experience with automated configuration management (Ansible, Puppet, Chef, etc.)
- Familiar in programming/scripting skills for automation (Bash, Ruby, Python, Perl, etc.)
- General understanding of Linux internals (system calls, file systems, processes, etc.)
- General understanding of TCP/IP and related protocols (HTTP, FTP, NFS, etc.)
- Experience with PowerShell scripting engine to automate tasks.
- Excellent problem solving, analytical, and decision-making capabilities, including understanding user requirements, troubleshooting technical issues, successfully resolving issues and challenges, and developing creative solutions for process improvement.
- Dependability, in that the individual is consistently at work and on time, follows instructions, responds to management direction, and solicits feedback to improve.
- Must have customer service experience as this position will require candidate to engage with senior military and government leadership.
- Must be able to present your ideas clearly through briefings, meetings, and interaction with leadership of different skill sets.
- Must be able to provide training sessions as required.
- Must be able to engage with stakeholders to ensure tasks are progressing and meeting timelines.
- Excellent communication skills
- Excellent documentation skills
- Strong organizational and collaborative skills
- Strong teamwork and engagement as a project team member.
- Ability to assimilate information rapidly, motivated to self-study new requirements.
- Maintain current industry knowledge of relevant concepts, practices, and procedures.
- Ability to work under time constraints.
- Adapt to changes in requirements and new projects.
- Manage or serve as a team lead.
- Maintain and upgrade certifications.
- Other duties may be assigned, directed, or requested.
- Must have a minimum of an active Secret clearance at time of interview and candidate must maintain active clearance.
Salary Minimum: $90,000
Salary Maximum: $120,000
The annual base salary provided is a guideline for this position and is not a guarantee of compensation or salary. When extending an offer, By Light also considers other variables such as (but not limited to) work experience, education, training, skill set, internal peer equity, clearance level, and market conditions. In addition, By Light provides an extensive selection of benefits and offerings to our employees.
Skills Required
- High school diploma or associate degree, or equivalent combination of education, certifications, training, or work experience
- Bachelor's degree in information technology, computer science, or related technical discipline
- 6+ years of demonstrated experience with RHEL 7 and/or RHEL 8 servers
- CompTIA Security+ CE or equivalent DoD 8570.01-M IAT Level II baseline certification
- RHEL 7 and/or RHEL 8 Computing Environment certification
- Experience managing RHEL 7 and RHEL 8 Linux servers
- Advanced knowledge of Linux administration and best practices
- Familiarity with enterprise network architectures
- Experience with automated configuration management tools such as Ansible, Puppet, or Chef
- Programming or scripting experience with Bash, Ruby, Python, Perl, or similar languages
- Understanding of Linux internals, including system calls, file systems, and processes
- Understanding of TCP/IP and related protocols, including HTTP, FTP, and NFS
- Experience with PowerShell scripting
- Customer service experience and ability to engage with senior military and government leadership
- Excellent communication, documentation, problem-solving, analytical, and decision-making skills
- Ability to present ideas, provide training, collaborate with stakeholders, and meet timelines
- Ability to work under time constraints and adapt to changing requirements
- Ability to manage or serve as a team lead
- Active Secret security clearance at the time of interview and ability to maintain it
What We Do
By Light Professional IT Services LLC (By Light) provides a full range of hardware and software engineering services to defense, civilian, and commercial customers worldwide. Driven by a management team that leverages real-world expertise from the defense, intelligence, federal healthcare, and commercial sectors, we provide reliable, efficient, and cost-effective IT solutions. Some of our successes include: • Completion of 80+ Global Information Grid Bandwidth Expansion (GIG-BE) sites both CONUS & OCONUS. Provided Optical Network Engineering, Implementation, & Project Control Worldwide. • Provided timely completion of ATM to IP Migration, Legacy Network Optimization, & VOIP Implementation of 47 CONUS Sites for the United States Special Operations Command (USSOCOM) SCAMPI Network. • Supporting the AMC CIO/G6 in the Depot Modernization Program, implementing CONUS wide 802.11/a/b/g/n wireless networks, Area Processing Center Migration, DISN Optimization, and a 40,000 user, enterprise-wide SharePoint Implementation. • Completion of 2,000 Plus Legacy Circuit Migrations to DISN Transport for DISN Transition Program. • Delivered Communications Support & Staff Augmentation for Deployed DoD Forces under the Program Executive Office Enterprise Information Systems Technology Applications Office (PEO EIS TAO). • Successful Implementation of Secure Intelligent Video Systems (IVS) for the Intelligence Community. • Supporting major international carriers in the modernization and expansion of Data Center Facilities. • Engineering new Turnkey “Cloud Services,” including Hosting, Managed Services, COOP, and Data Storage and Archival.







