Senior Incident Responder

Company: CACI
Location: Suitland
Posted on: April 1, 2026

Job Description:

Job Title: Senior Incident Responder Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI Employee Type: Regular Percentage of Travel Required: Up to 10% Type of Travel: Local * * * The Opportunity: CACI is seeking a skilled and experienced Incident Responder (Level 3) to join our dynamic team to support a DoD client in Suitland, MD. The ideal candidate will have a robust background in Computer Network Defense (CND), incident management, and cybersecurity operations. This role requires a proactive individual with significant experience in monitoring, investigating, and responding to cybersecurity alerts, as well as developing and implementing defense tactics, techniques, and procedures (TTPs). Responsibilities: Incident Response: Monitor and investigate alerts from cybersecurity tools. Respond to and mitigate cybersecurity incidents and breaches following established incident management lifecycle processes. Threat Analysis: Identify and classify attack vectors, analyze malware, and develop countermeasures. Utilize network traffic packet captures and analysis methodologies. Tool Utilization: Operate Network Intrusion Detection/Prevention Systems (NIDPS) such as Cisco FirePower, Palo Alto NGFW, and host-based systems like Trellix ePO, Microsoft Defender, and Tanium. Manage Security Information and Event Management (SIEM) systems such as Splunk and Elastic. Documentation and Reporting: Write detailed reports, create "best practices" manuals, and develop standard operating procedures. Document incident response activities and findings. Penetration Testing: Conduct penetration testing and Red Teaming exercises using tools such as Kali, SamuraiWTF, NMap, Burp Suite, sqlmap, and Metasploit. Scripting and Coding: Develop scripts and tools using languages such as Python, Perl, Ruby, JavaScript, PowerShell, and others as needed for incident response and automation. Collaboration: Work closely with other cybersecurity teams, IT staff, and stakeholders to ensure a cohesive defense strategy. Provide briefings and presentations as required. Continuous Improvement: Stay updated on the latest cybersecurity threats, trends, and technologies. Implement improvements to existing security posture and incident response processes. Qualifications: Required: TS/SCI Security Clearance BA/BS in Computer Science, Information Technology, Information Assurance, or a related field. Master’s degree preferred. Alternatively, 15 years of relevant professional experience in lieu of a degree. Minimum of 10 years of concentrated experience in CND. 5 years of professional experience in monitoring and investigating cybersecurity alerts. Significant experience with Federal, DoD, IC, and industry standards. Strong interpersonal, organizational, time management, writing/documentation, and briefing skills. Excellent analytical, conceptual, and problem-solving skills. Proven ability to communicate effectively and develop/present presentations. Experience in developing and implementing CND TTPs. Knowledge of network security architecture, including topology, protocols, and components. Familiarity with common adversary TTPs and enterprise services (domain controllers, print, email, DNS, web servers). Experience with network traffic analysis tools like WireShark or NIKSUN. Proficiency in scripting and coding languages (Python, Perl, Ruby, JavaScript, PowerShell, C, C++, Java, VisualBasic.Net, PHP, AJAX). Certifications: Must possess one of the industry certifications listed under CSSP Incident Responder per the requirements of the DoD Cyber Security Workforce Improvement Program, DoD 8570.01-M. - What You Can Expect: A culture of integrity. At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation. An environment of trust. CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality. A focus on continuous growth. Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy. Pay Range : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. The proposed salary range for this position is: $120,800 - $265,800 CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.

Keywords: CACI, Montgomery Village , Senior Incident Responder, IT / Software / Systems , Suitland, Maryland