Cyber Security Engineer-Technical Lead

Quest Oracle Community; Bethesda (MD); Hybrid; USD 154,050 - 278,475; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible schedules

Discounted stock purchase plans

Technical upskilling

Job summary

Leidos is seeking a Cyber Security Engineer-Technical Lead to protect customer information systems and networks. The role blends hands-on engineering with technical leadership across the security team.

You will work with firewalls, VPNs, IDS/IPS, SIEM (Splunk), and security audits within a DevSecOps life cycle; requires TS/SCI with polygraph to be considered.

Qualifications

• Master’s degree and 15+ years of prior relevant experience; higher years may substitute.
• Active TS/SCI with polygraph clearance required.
• Experience implementing and managing SIEM tools such as Splunk.
• Experience with HBSS/Trellix, IDS/IPS, and VPNs.
• Strong hands-on engineering and technical leadership. Advise and mentor junior engineers.

Responsibilities

• Plan, implement, manage, monitor, and upgrade security controls and tools used to protect enterprise systems and networks, while identifying opportunities to automate repeatable operations tasks.
• Design, configure, implement, troubleshoot, and maintain security technologies such as firewalls (security groups), endpoint protection tools (HBSS/Trellix), SIEM platforms (Splunk).
• Formulate systems and methodologies and respond to security events; assist in remediation of cyber security incidents.
• Participate in change management to ensure security compliance and avoid new vulnerabilities.
• Conduct routine vulnerability scanning and reporting; track remediation to closure.
• Provide technical leadership and coordinate with peer Technical Leads to align architecture and security controls.

Skills

Automation

Problem solving

Technical leadership

Education

Master’s degree in a related field

Tools

Splunk

HBSS/Trellix

Firewalls

VPNs

Job description

Leidos has an exciting opportunity for Cyber Security Engineer-Technical Lead in our Intel Security Sector's Analysis Solutions Business Area. 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

This role is responsible for protecting the customer’s information systems and networks from potential cyber-attacks. The Cyber Security Engineer- Technical Lead will serve in a hands‑on "player‑coach" capacity, dedicating approximately 75% of time to direct technical engineering, troubleshooting, and implementation work, while providing technical leadership and coordination across the security team. The candidate must display an excellent understanding of technology and utilization of Firewalls (Security Groups), VPNs, Data Loss Prevention (DPS), IDS/IPS, Web-Proxy, Security tools, and Security Audits. Candidate will work directly with Team leads, developers, operations personnel, and other Technical Leads throughout a DevSecOps life cycle both on policy and technical implementation of technologies. This is not a supervisory management role. Success in this position is measured by individual technical contribution and resolution of complex security issues, in addition to technical leadership impact.

Primary Responsibilities:

• Plan, implement, manage, monitor, and upgrade security controls and tools used to protect enterprise systems and networks, while identifying opportunities to automate repeatable operations tasks.
• Design, configure, implement, troubleshoot, and maintain security technologies such as firewalls (security groups), endpoint protection tools (HBSS/Trellix), SIEM platforms (Splunk),
• Formulate systems and methodologies as well as respond to security related events and assist in remediation efforts of cyber security incidents (system and/or network breaches, malware attacks)
• Participate in change management processes to ensure system changes maintain security compliance and do not introduce new vulnerabilities.
• Conduct routine vulnerability scanning and assessment activities, provide formal and informal reports to technical teams, and track remediation efforts to closure.
• Provide technical leadership and subject matter expertise to the security engineering team while coordinating with peer Technical Leads across infrastructure and application domains to ensure alignment of architecture and security controls.
• Serve as the primary technical escalation point for complex or cross-domain security issues while mentoring junior engineers through collaborative troubleshooting and hands‑on technical guidance.

Basic Qualifications:

• Experience implementing and managing Security Information and Event Management (SIEM) tools such as Splunk or similar platforms.
• Experience working with endpoint and network security technologies, including IDS/IPS, HBSS/Trellix, and related defensive security tools.
• Expert with automation (e.g., Ansible, CloudFormation)
• Demonstrated history of personally implementing, troubleshooting, and maintaining security technologies in production environments.
• Proven ability to balance technical leadership responsibilities with significant hands‑on engineering work. Strong attention to detail with analytical mind outstanding problem‑solving skills
• Monitor security advisories, bulletins, and industry threat intelligence to stay informed of current vulnerabilities, threats, and trends.
• Requires Master’s degree and 15 or more years of prior relevant experience. Additional years of experience may be substituted in lieu of a degree. To be considered, you must have an active TS/SCI with polygraph security clearance

Preferred Qualifications:

• Experience with additional security tools and processes such as IDS/IPS, VPN, GitHub, GitLab, SonarQube
• Experience with implementing and managing network and application firewalls, virtual private networks, firewalls, web protocols, incident detection, incident response, and forensics activities,
• Experience with Agile software development processes/environments, scripting /programming languages such as Python or PowerShell. (e.g., React), DevOpsSec pipelines and tools
• Familiar with Cloud Computing Technologies and Services (AWS, Oracle, Google)
• Knowledge of potential attack vectors such as XSS, injection, hijacking and social engineering
• Experience with health monitoring tools (SolarWinds) and using STIG viewers/tools to assess compliance with standards
• Experience with database systems, search engines, web applications, Linux Red Hat environments, Windows environment

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.

Original Posting

March 23, 2026

Pay Range

Pay Range $154,050.00 - $278,475.00

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.