Weekend Incident Responder – TS/SCI (Day Shift)

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

Job summary

Leidos is seeking an Incident Responder for the weekend day shift to join a mission-focused cyber defense team at HGCC in Suitland, MD. You will defend Navy networks by detecting, analyzing, containing, and recovering from cybersecurity incidents, coordinating with security partners and stakeholders.

Requires TS/SCI clearance, a strong CND background, and experience with SIEMs, NIDS/NIPS, and security tooling. Part-time schedule typically 24 hours weekly with two 12-hour weekend shifts.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Information Assurance, or related field with 8+ years of experience or Master's with 6+ years of experience
• Active TS/SCI security clearance
• Extensive experience in Computer Network Defense (CND)
• Experience monitoring, analyzing, and investigating alerts from cybersecurity tools
• Experience with SIEM systems (Splunk, Elastic)
• Experience with NIDPS and host-based tools (Cisco FirePower, Palo Alto NGFW, Trellix ePO, Defender, Tanium)
• Knowledge of scripting languages (Python, Perl, Ruby, JavaScript, PowerShell, C, C++, Java)
• Knowledge of penetration testing tools (Kali, SamuraiWTF, Nmap, Burp Suite, sqlmap, Metasploit)
• Knowledge of ticketing, reporting, and intelligence dissemination in cybersecurity

Responsibilities

• Perform all phases of the incident response lifecycle: detection, analysis, containment, eradication, recovery
• Handle escalations from Tier 1 analysts and support TS/SCI networks (JWICS, ATLAS)
• Respond to incident notifications via phone and email
• Submit ESAFs to NNWC Electronic Spillage Center
• Monitor DLP outputs for classified indicators
• Coordinate with SSOs, JAG, ONI ISSM, CNI and other IC/DoD teams
• Maintain incident documentation and timelines
• Participate in incident response meetings and after-action reviews
• Assist in security exercises

Skills

CND

SIEM (Splunk/Elastic)

NIDPS (FirePower, NGFW)

Scripting languages (Python, PowerSH,

Education

Bachelor's with 8+ years or Master's with 6+ years

Tools

Splunk

Elastic

Cisco FirePower

Palo Alto NGFW

Trellix ePO

Microsoft Defender

Tanium

Kali

Burp Suite

Nmap

Metasploit

Job description

Leidos is seeking an Incident Responder for the weekend day shift to join a mission-focused cyber defense team at HGCC in Suitland, MD. You will defend Navy networks by detecting, analyzing, containing, and recovering from cybersecurity incidents, coordinating with security partners and stakeholders.

Requires TS/SCI clearance, a strong CND background, and experience with SIEMs, NIDS/NIPS, and security tooling. Part-time schedule typically 24 hours weekly with two 12-hour weekend shifts.