Incident Response Analyst

Leidos • Arlington, VA • 3d ago

Description

At Leidos , we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

If this sounds like the kind of environment where you can thrive, keep reading!

The Digital Modernization Sector brings together our digital transformation and IT programs, allowing us to better serve our customers through scale and repeatability. Leidos has a critical need for a Incident Response Analyst to support DHS.

The Department of Homeland Security (DHS), Security Operations Center (SOC) Support Services is a US Government program responsible to monitor, detect, analyze, mitigate, and respond to cyber threats and adversarial activity on the DHS Enterprise. The DHS SOC has primary responsibility for monitoring and responding to security events and incidents detected at the Trusted Internet Connection (TIC) and Policy Enforcement Point (PEP) and is responsible for directing and coordinating detection and response activities performed by each Component SOC. Direction and coordination are achieved through a new shared DHS incident tracking system and other means of coordination and communication. Leidos is seeking a Senior Incident Response Analyst to join our team on this highly visible DHS CISA SOC Program.

The Incident Responder will perform the following:

Coordinate investigation and response efforts throughout the Incident Response lifecycle

Correlate and and analyze events and data to determine scope of Cyber Incidents

Acquire and analyze endpoint and network artifacts, volatile memory, malicious files/binaries and scripts

Recognize attacker tactics, techniques, and procedures as potential indicators of compromise (IOCs) that can be used to improve monitoring, analysis and Incident Response.

Develop, document, and maintain Incident Response process, procedures, workflows, and playbooks

Tune and maintain security tools (EDR, IDS, SIEM, etc) to reduce false positives and improve SOC detection capabilities

Document Investigation and Incident Response actions taken in Case Management Systems and prepare formal Incident Reports

Create metrics and determine Key Performance Indicators to drive maturity of SOC operations

Develop security content such as scripts, signatures, and alerts

The ideal candidate will possess:

In-depth knowledge of each phase of the Incident Response life cycle

Expertise of Operating Systems (Windows/Linux) operations and artifacts

Understanding of Enterprise Network Architectures to include routing/switching, common protocols (DHCP, DNS, HTTP, etc), and devices (Firewalls, Proxies, Load Balancers, VPN, etc)

Ability to recognize suspicious activity/events, common attacker TTPs, and perform logical analysis and research to determine root cause and scope of Incidents

Be familiar with Cyber Kill Chain and have utilized the ATT&CK Framework

Have scripting experience with Python, PowerShell, and/or Bash

Ability to independently prioritize and complete multiple tasks with little to no supervision

Flexible and adaptable self-starter with strong relationship-building skills

Strong problem-solving abilities with an analytic and qualitative eye for reasoning

Strong verbal and written communication skills

-Ability to communicate with all levels of audiences (subordinates, peers & leadership)

Basic Qualifications

All Department of Homeland Security SOC employees are required to favorably pass a 5-year (BI) Background Investigation. Experience in the areas of incident detection and response, malware analysis, or computer forensics.

Bachelors' degree in Computer Science, Engineering, Information Technology, Cyber Security, or related field and 8-12 years of related experience. Additional years of experience and cyber certifications may be considered in lieu of degree.

Should have at least one of the following certifications:

SANS GIAC: GCIH, GCIA, GCFA, GPEN GCFE, GREM

CISSP OSCP, OSCE, OSWP

Preferred Qualifications

Experience in cyber government, and/or federal law enforcement FISMA systems.

Original Posting:

June 25, 2025

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 $104,650.00 - $189,175.00

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.

REQNUMBER: R-00161591

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.

Leidos

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