Senior Systems Engineer

MANTECH; Chantilly (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

MANTECH is seeking a proactive Senior Systems Engineer in Chantilly, VA to deliver Tier III Linux/RHEL support on-site. You will install, configure, and optimize server environments, lead engineering projects, and document processes for repeatable IT operations.

The role requires DoD-aligned certifications and a readiness to work occasional nights or weekends. Candidate should have hands-on Linux/RHEL expertise, strong AD/DNS/DHCP experience, and the ability to collaborate with cross-functional

Qualifications

• Bachelor’s degree with 5+ years Linux/RHEL experience or equivalent substitution.
• Hands-on CLI experience with Linux/RHEL on-premise environments.
• Experience with Active Directory, DNS, and DHCP.
• Experience upgrading, migrating, and deploying Linux/RHEL servers.
• IAT Level III/DoD 8140 Advanced certification within 6 months of hire.
• DoD 8570 Computing Environment certification within 6 months of hire.

Responsibilities

• Provide Tier III IT Systems support for Linux/RHEL server environments.
• Install, configure, and maintain Linux/RHEL servers for reliability and security.
• Diagnose performance, security, and technical issues across the platforms.
• Monitor performance, capacity, and backups; perform test restores and updates.
• Lead development and documentation of system processes; train team members.
• Write SOPs for repeatable tasks and contribute to project releases.
• Participate in ITIL processes and Change Requests across service lifecycle.

Skills

Linux/RHEL

Active Directory

DNS/DHCP

Scripting

Security/DoD IAT

ITIL awareness

Education

Bachelor's degree in Computer Science

Tools

Ansible

ServiceNow

TrackIT

Bash

Python

Perl

Job description

MANTECH seeks a motivated, career and customer-oriented Senior Systems Engineer to join our team in Chantilly, VA. The position is onsite.

Responsibilities Include But Are Not Limited To

• Provide Tier III IT Systems support for customer Linux or Red Hat Enterprise Linux (RHEL) server environments
• Install, configure, maintain, and optimize Linux and RHEL Server environments to ensure reliable and secure infrastructure
• Diagnose and resolve the performance, security, and/or technical challenges related to the platforms listed above
• Monitor performance, capacity, and backups; perform test restores and implement system updates, patches, and improvements
• Investigating and resolving operational problems in conjunction with other engineering and technical personnel
• Lead the development and documentation of system processes and train team members to ensure operational consistency and knowledge transfer
• Writing Standard Operating Procedures (SOPs) to accomplish repeatable tasks
• Working on project teams responsible for engineering and packaging releases to integrate within the customer’s production IT environment
• Contribute to strategic planning, solve complex technical problems, and lead Linux and RHEL engineering projects or functional teams when required
• Participating in processes throughout all phases of the ITIL Service Lifecycle, including submitting Change Requests
• Performing requirements analysis, requirements gathering, and integration for all platforms listed above
• Willingness to occasionally work after normal duty hours (nights and weekends) to support system maintenance or service outages

Minimum Qualifications

• Bachelor’s degree with 5+ years of relevant Linux or RHEL experience, an Associates degree with 8+ years of experience, or a High School Diploma with an 11+ years of experience may be substituted for a Bachelor's degree
• Hands-on experience or knowledge with configuration and implementation at command-line interface, of Linux or RHEL Server technologies within an on-premise infrastructure
• Experience with Active Directory, Domain Name System (DNS), and Dynamic Host Configuration Protocol (DHCP)
• Experience performing Linux and RHEL server upgrades, migrations, and deployments
• IAT Level III/DoD 8140 Advanced certification, e.g., SecurityX or CASP+ within 6 months of hire
• DoD 8570 Computing Environment certification within 6 months of hire

Preferred Qualifications

• Red Hat Certified System Administrator (RHCSA) certification
• Experience with scripting languages such as Bash, Python, or Perl to automate system tasks
• Familiarity with configuration management tools like Ansible to maintain system baselines
• ITIL v.3 Foundations or later certification highly desired
• Experience using a Service Desk ticketing system, such as TrackIT or ServiceNow
• Previous customer service experience strongly desired

Clearance Requirements

• Must have a current and active Top Secret clearance, and be willing and able to obtain a CI polygraph

Physical Requirements

• The person in this position must be able to remain in a stationary position 50% of the time
• Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations