Sr. Cyber Security Engineer

Leidos has an exciting opportunity for a Cyber Security Analyst (Senior) in our Intel Sector's Analysis Solutions Business Area (ASBA).  Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.  Join us and make a difference in National Security!  

Job Summary

We have an IMMEDIATE NEED for a Cyber Security Engineer responsible for supporting the cyber security program and strategy at a tactical and operational level (network, infrastructure, applications, and databases) to ensure that security controls are functioning efficiently and effectively, more specifically in the realm of security logging, monitoring, alert management, incident handling vulnerability and configuration management. Candidates will work directly with Team leads and other cyber security engineers throughout a DevSecOps life cycle both on policy and technical implementation of technologies.

Primary Responsibilities:

• System & network security monitoring with security information event management tools.

• Conducts vulnerability routine scanning, provides formal and informal reports to IT team and tracks remediation efforts

• Investigate and respond to cyber security incidents (system and/or network breaches, malware attacks) and implement forensic investigations.

• Research and evaluate emerging cyber security threats and ways to manage them; proactively identify security flaws and vulnerabilities; and audit systems for secure configuration.

• Participate in data and root cause analysis for each service impacting incident with all possible corrective actions for improvement.

• Continuously review security bulletins and related news to stay apprised of current threats and trends.

Basic Qualifications:

• Experience utilizing and tuning Splunk Enterprise Security (or similar tool) to review audit logs to highlight notable events for further investigation or excluding as non-issue in the future

• Experience reviewing, understanding, and determining if we have evidence of impact from published vulnerabilities and reviewing system logs to determine if a published vulnerability is being actively exploited

• Experience documenting results after conducting security data calls

• Experience with incident detection, incident response and forensics activities 

• Strong attention to detail with analytical mind and outstanding problem-solving skills

• Candidate must have a BS degree and 8 – 12 years of prior relevant experience to operate within the scope contemplated by the level. Will consider work experience in lieu of a degree.

• Candidate must have an active TS/SCI with a polygraph.

Preferred Qualifications:

• Familiar with SEIM

• Familiar with Cloud Computing Technologies (AWS)

• Experienced with HBSS, IDS/IPS, VPNs, DISA STIGs

• Experience with RHEL

• Experience with Risk Management Framework

• Experience with Agile Software Development

• Knowledge of potential attack vectors such as XSS, injection, hijacking, social engineering

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you – apply today.

CABARESTON

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

January 29, 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 only and 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.