Cyber Security Engineer—Technical Lead

Leidos LLC

Bethesda (MD)

On-site

USD 154,000 - 278,000

Full time

3 days ago

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Benefits offered by this job

Health and Wellness programs

Paid time off

Retirement plan

Training and education support

Job summary

Leidos LLC is seeking a Cyber Security Engineer-Technical Lead to protect customer information systems and networks. The role blends hands-on engineering (≈75%) with technical leadership across the security team in a DevSecOps lifecycle.

The candidate should have expertise with firewalls, VPNs, DLP, IDS/IPS, web proxies, security tools, and audits, and hold an active TS/SCI clearance. Strong automation and production‑grade security experience are essential.

Qualifications

Master's degree required with 15+ years of relevant experience or equivalent
Active TS/SCI with polygraph clearance
Experience implementing and managing SIEM and security technologies in production
Strong hands-on engineering and technical leadership
Familiarity with DevSecOps lifecycle and blue-team operations

Responsibilities

Plan, implement, manage, monitor, and upgrade security controls and tools used to protect enterprise systems and networks
Design, configure, implement, troubleshoot, and maintain security technologies such as firewalls, endpoint tools, SIEM platforms
Formulate systems and methodologies and respond to security events and incidents
Participate in change management to ensure security compliance
Conduct vulnerability scanning and remediation tracking
Provide technical leadership and mentorship across teams
Serve as escalation point for complex security issues and guide junior engineers

Skills

Security engineering

Technical leadership

Hands-on engineering

DevSecOps

Threat intelligence awareness

Analytical mindset

Detail oriented

Education

Master's degree with 15+ years of experience

Tools

Splunk

HBSS/Trellix

IDS/IPS

VPN

Python

PowerShell

Ansible

CloudFormation

GitHub

GitLab

SonarQube

SolarWinds

STIG viewers

Job description

Job Overview

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.

Pay Range

Pay Range $154,050.00 - $278,475.00

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.

Securing Your Data

Leidos will never ask you to provide payment‑related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to spam.leidos@leidos.com.

Commitment and Diversity

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.