Incident Responder – 12 Hour Weekend PM Shift

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

Job summary

Leidos is seeking two Incident Responders for the ONI HGCC in Suitland, MD. This part-time weekend role runs 24 hours per week, with two regular weekend schedules and a two-month full-time training period.

The position defends TS/SCI networks by investigating incidents, containing threats, and analyzing digital artifacts. You’ll work with cybersecurity partners across multiple teams in a critical national-security environment.

Qualifications

• Bachelor’s degree with extensive cybersecurity experience or a Master’s with significant work history.
• Active TS/SCI clearance required.
• Extensive experience in computer network defense (CND).
• Experience with SIEM systems (Splunk, Elastic).
• Experience with NIDS/NIPS and NGFWs (FirePower, Palo Alto).
• Proficient in scripting languages and common cybersecurity tools.
• Knowledge of penetration testing tooling and methodologies.

Responsibilities

• Perform all phases of the incident response lifecycle.
• Receive and act on escalations from Tier 1 analysts.
• Support incident response for TS/SCI networks including JWICS and ATLAS.
• Prepare ESAFs to NNWC Electronic Spillage Center.
• Monitor DLP outputs for spillage indicators.
• Coordinate with SSOs, JAG, ONI ISSM, and other teams.
• Maintain detailed incident documentation and timelines.
• Participate in incident response meetings and reviews.
• Support annual security exercises.

Skills

CND experience

SIEM Splunk Elastic

NIDS/NIPS FirePower

Palo Alto NGFW

Trellix ePO

Scripting languages

Incident response

Kali Metasploit

Education

Bachelor's degree in Cybersecurity/IT/IA or related field

8+ years experience or Master’s with 6+ years

Tools

Job description

Description

Incident Responder – 12 Hour Weekend PM Shift

Location: Suitland, MD

Clearance: Active TS/SCI

Schedule: Part Time, typically 24 hours per week

Leidos is hiring two Incident Responders to support our mission focused cybersecurity team at the Office of Naval Intelligence (ONI) Hopper Global Communications Center (HGCC) in Suitland, MD .

an opening for the following weekend shift:

Weekend Night Shift

Saturday and Sunday – 1930 to 0730

In this role, you will serve as a digital first responder, helping defend the Navy's critical maritime intelligence networks against cyber threats. You will investigate and respond to cybersecurity incidents, contain affected systems, limit operational impact, and collect and analyze digital artifacts to support effective response and recovery. Working across the incident response lifecycle, you will collaborate with cybersecurity, intelligence, and investigative partners to help protect highly sensitive TS/SCI environments.

Work Location and Hours

These are part-time, weekend positions , typically scheduled for 24 hours per week. Each selected candidate will be assigned to one of the two regular weekend schedules listed above.

Training Schedule:

For approximately the first two months of employment, both selected candidates will be required to work a full-time training schedule during the day shift, Monday through Friday. Candidates must be available to work full time during this schedule for the entire initial training period.

Regular Weekend Schedule:

Following completion of training, one Incident Responder will transition to the Weekend Day Shift, 0730 to 1930 , and one Incident Responder will transition to the Weekend Night Shift, 1930 to 0730 . Occasional additional or alternate shift coverage may be required to support team coverage, employee leave, or other program and staffing needs.

Primary 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, including JWICS, ATLAS, and other networks for which HGCC is responsible.
• 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 Special Security Officers (SSOs), Judge Advocate General (JAG), ONI ISSM, Hopper ISSM, CNI, NAVNETWARCOM, IC SCC, NCDOC, NCIS, and other IC and DoD SOC/DCO teams.
• Maintain detailed and accurate 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.

Required 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. Additional experience may be considered in lieu of a degree.
• Active TS/SCI clearance in DISS and required program access.
• Extensive experience in the Computer Network Defense (CND) discipline.
• Significant professional experience monitoring, analyzing, and investigating alerts generated by cybersecurity tools.
• Experience with Security Information and Event Management (SIEM) systems such as Splunk and Elastic.
• Experience with Network Intrusion Detection/Prevention Systems (NIDPS), such as Cisco FirePower and Palo Alto NGFW, as well as host based tools such as Trellix ePO, Microsoft Defender, and Tanium.
• Knowledge of scripting and coding languages such as Python, Perl, Ruby, JavaScript, PowerShell, C, C++, and Java.
• Knowledge of penetration testing and red team tactics, techniques, and procedures, as well as 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.

Required Certifications

• Must possess one of the following active certifications: CompTIA Security+, CompTIA CySA+, CompTIA PenTest+, CompTIA Cloud+, CEH, FITSP O, GIAC GMON, GIAC GRID, GIAC GCIA, GIAC GCIH, GIAC GICSP, GIAC GCED, GIAC GDSA, GIAC GSEC, CFR, or Cisco CyberOps.

Original Posting:

October 5, 2026

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $107,900.00 - $195,050.00

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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com .

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits .

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status.

Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws.

Leidos is an equal opportunity employer/disability/vet.