Tier 3 Systems Engineer Jobs in Reston, VA (NOW HIRING)

The Leidos Security and Engineering Programs (SEP) is seeking a Systems Engineer for the Center for Information Systems Security (CISS) program. This position requires the ability to work flexible hours in Washington DC with as-needed travel to Chantilly, VA (under 25%).

Work Schedule is as follows:

Monday thru Friday: 2PM-10:30PM

Primary Responsibilities

1) Performs the integration of new COTS/GOTS systems (network equipment, servers, workstations, etc) into the production environment, responsible for ensuring mission readiness.

2) Manages change controls for documentation within a IT Service Management Tool (ITSM) and Configuration Management database (CMDB) and performs corrective action on any discrepancies or findings.
3) Develops technical solutions and resolves complex user, computer, server, network, appliance, and application issues. Independently and consistently records, manages, and updates these solutions in a knowledge database and ticketing system.
4) Reviews data from a DoD Network Monitoring System. Reviews historical data and proactively audits systems to ensure they meet program requirements. Assesses and remediates risks and incidents.
5) Once trained on the program specific equipment, the candidate will be relied on as an expert in their AOR, and will be expected to analyze issues, make remediation recommendations to management, and subsequently carry out those remediation processes.

6) Ability to create technical documentation (SOP's, KBA's, etc) to help junior staff members reduce escalation numbers.

Basic Qualifications

BS degree and 8 years of prior relevant experience or Masters with 6+ years of prior relevant experience. A High School diploma with an additional 2 years' relevant experience may be considered in lieu of a degree.
Interim Top-Secret clearance is required with ability to obtain a Final Top Secret.
Experienced with the following Windows Server administration tools: WSUS, Group Policy, Active Directory, RDP, DNS, DHCP.

Mid-to-High Level RHEL troubleshooting.

Low-to-Mid Level Windows 11 and Windows Server 2022/2025 troubleshooting.
GOTS/COTS application, installation, configuration, and troubleshooting.
Industrial computer and Dell systems installation, configuration, and troubleshooting.
Tier 3 Systems Administrator support.
The candidate should be a proactive leader and team player with strong communication, management, analytical, and problem solving skills; proven ability to thrive in environments that constantly embraces new technology.

AWS virtualization, networking configuration, and troubleshooting.

Docker configuration and troubleshooting.

Database installation, configuration, and troubleshooting (Postgre, MariaDB, etc.).

Preferred Qualifications

Lifecycle management experience (PC Imaging & Disposition).
Knowledge of Network Monitoring tool management such as OpManager, Solarwinds, PRTG.
ServiceNow On-Premise application and database server experience.
Experience with virtualization.
Infrastructure equipment troubleshooting such as Tripplite or Eaton UPS', Fiber and/or Ethernet installation/termination, and electronic testing and metering equipment.
Ticket tracking system experience (i.e. Remedy, ServiceNOW, SharePoint).
Prior experience in a Network Operations Center environment or Tier 3 Helpdesk.
Basic Juniper and Palo Alto Tier 1 troubleshooting experience.

Experience with CMD/Terminal/PowerShell/other CLI

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.