Cybersecurity Specialist - Senior

Description

Looking for an opportunity to make an impact?

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 sustainably. 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.

The Intel Security Sector delivers technology-enabled services and mission software capabilities for defense and intel customers in the areas of cyber, logistics, security operations, and decision analytics.

Leidos has an exciting opportunity for a Senior Cybersecurity Specialist in our Intel Security Sector's Analysis Solutions Business Area.

This position will be located at one of our customer sites in Bethesda, MD;
Reston, VA; or Joint Base Anacostia-Bolling, DC.

The Senior Cybersecurity Specialist supports the organization’s cybersecurity program by implementing and maintaining security operations at both tactical and operational levels. The role helps ensure that security controls are operating effectively across key areas including security logging, monitoring, alert management, incident response, vulnerability management, and configuration management. The analyst will work closely with multidisciplinary teams—including Information Systems Security Engineers (ISSEs), Information Systems Security Managers (ISSMs), software developers, and systems engineers—to strengthen the security posture of mission systems.

Throughout the Dev Sec Ops  lifecycle, the candidate will assist in developing, implementing, and maintaining robust security strategies that protect mission‑critical systems, data, and infrastructure while ensuring compliance with organizational and federal cybersecurity requirements.

• Oversee advanced cybersecurity protocols, risk management, and ensure DoW‑aligned compliance standards.
• Monitor system and network security using SIEM tools such as Splunk Enterprise Security to detect, analyze, and respond to potential threats or anomalous activity. Investigate and respond to cybersecurity incidents, including system or network breaches, malware attacks, and support digital forensic investigations as needed.
• Conduct routine vulnerability scans, provide formal and informal reports to technical teams, and track remediation efforts to closure.
• Research and evaluate emerging cybersecurity threats and mitigation strategies; proactively identify security weaknesses and vulnerabilities; audit systems to ensure secure configurations.
• Audit system configuration to ensure compliance with established cybersecurity policies, standards, and secure configuration baselines.
• Continuously monitor security advisories, bulletins, and industry threat intelligence to stay informed of current vulnerabilities, threats, and trends.
• Participate in data analysis and root cause analysis following service‑impacting incidents and provide recommendations for corrective actions and security improvements. Collaborate with technical teams, developers, and customer leadership to strengthen the overall security posture of the supported systems.
• Provide risk‑based recommendations to customers after reviewing the overall risk posture of sponsored assets as part of the RMF and Authority to Operate processes. Manage and track customer‑sponsored assets’ Plans of Action and Milestones by coordinating with key security stakeholders throughout the post‑authorization lifecycle.

• Active TS/SCI clearance with the ability to obtain and maintain TS/SCI with Polygraph.

• Bachelor’s degree in Computer Science, Data Science, Engineering, Information Systems, or related technical discipline and 12 years of experience.
• Active TS/SCI clearance with the ability to obtain and maintain TS/SCI with Polygraph.
• Due to the nature of the government contracts we support, US Citizenship is required.
• Experience utilizing and tuning Splunk Enterprise Security (or similar SIEM platforms) to analyze cybersecurity audit and event logs,…