Weekend Night Incident Responder - TS/SCI Cyber Defense

Leidos Inc; Suitland (MD); On-site; USD 108,000 - 195,000; Part time

Job summary

Leidos is seeking an Incident Responder for the Weekend Night Shift to join a mission-focused cybersecurity team supporting ONI at the Hopper Global Communications Center in Suitland, MD. This role defends Navy intelligence networks, responding to incidents, containing threats, and analyzing digital artifacts across TS/SCI environments.

You will work two 12-hour weekend shifts (1930–0730) with occasional additional coverage.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study desired with 8+ years of experience or Master's degree with 6+ years of experience.
• Active TS/SCI security clearance.
• Extensive experience in the Computer Network Defense (CND) discipline.
• Significant experience monitoring, analyzing, and investigating alerts from cybersecurity tools.
• Experience with SIEM systems such as Splunk and Elastic.
• Experience with NIDPS such as Cisco FirePower and Palo Alto NGFW, and host-based tools such as Trellix ePO, Microsoft Defender, and Tanium.
• Knowledge of scripting and coding languages: Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java.
• Knowledge of penetration testing and red team tactics, techniques, procedures, and tools such as Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, and Metasploit.
• Knowledge of ticketing systems, report writing, and intelligence gathering, analysis, and dissemination techniques specific to cybersecurity.

Responsibilities

• Perform all phases of the incident response lifecycle, including detection, analysis, containment, eradication, and recovery.
• Receive and act on escalations from Tier 1 analysts, conduct spillage response and cleanup activities, and support incident response for TS/SCI networks.
• Receive and respond to incident notifications from customers via telephone and email.
• Prepare and submit Electronic Spillage Assessment Forms (ESAFs) to the NNWC Electronic Spillage Center.
• Monitor Data Loss Prevention (DLP) outputs for classified code words and potential spillage indicators.
• Coordinate and communicate with internal and external stakeholders, including SSOs, JAG, ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS, and other IC/DoD teams.
• Maintain detailed incident documentation and timelines throughout the response process.
• Participate in incident response meetings, briefings, and after action reviews.
• Support the execution and evaluation of annual security exercises.

Skills

Active TS/SCI clearance

CND experience

Security monitoring

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Python

Perl

Ruby

JavaScript

PowerShell

C

C++

Java

Penetration testing

Red team tactics

Ticketing systems

Report writing

Intelligence gathering

Education

Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or a related area of study

Master's degree

Tools

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Job description

Leidos is seeking an Incident Responder for the Weekend Night Shift to join a mission-focused cybersecurity team supporting ONI at the Hopper Global Communications Center in Suitland, MD. This role defends Navy intelligence networks, responding to incidents, containing threats, and analyzing digital artifacts across TS/SCI environments.

You will work two 12-hour weekend shifts (1930–0730) with occasional additional coverage.