2,135,048open jobs
135,034companies
244,532added this week
Browse all
Salary
$131k – $237k per year
Location
In office (United States)
Seniority
Senior · 14+ years exp
Visa
H-1B filings in 12 months: 50 · for this role: 4 · green card filings: 24
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 6, 2026. First seen by Alion on Nov 4, 2026. Leidos scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Leidos is an American technology and engineering services company created in 2013 when Science Applications International Corporation split in two, with Leidos taking the technical services and solutions business. It is one of the largest suppliers to the United States government, working across defence programmes, intelligence systems, civil agencies including the Federal Aviation Administration, and healthcare services for the Department of Veterans Affairs. Headquartered in Reston, Virginia, the company also builds security detection products for airports and borders, and has concentrated recent investment on trusted artificial intelligence and autonomy for mission environments.

As a Senior Cyber Security Engineer you will join a small team of security engineers providing Information Assurance (IA) Architecture Analysis and Security Engineering Support for the implementation and fielding of the National Leadership Command Capability in support of Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications. The ISSE will perform in a consultant like role providing technical knowledge, expertise and advice to our customer.

Primary Responsibilities:

The Senior Cyber Security Engineer shall deliver and lead threat-informed cybersecurity products - cybersecurity risk assessments, architecture reviews, and engineering guidance that bring sound, accurate, timely, and actionable service to mission partners: This includes:

  • Conduct cybersecurity risk assessments and provide prioritized risk mitigation recommendations in support of the customer’s mission.
  • Support the design, implementation, and operation of real-time capabilities to discover, detect, analyze, and mitigate threats and vulnerabilities.
  • Analyze candidate architectures by evaluating against defined security requirements to identify security gaps, and provide recommended mitigation strategy.
  • Research and evaluate candidate emerging technologies to determine cybersecurity effectiveness.
  • Aid stakeholders through the development, refinement, delivery, and implementation of innovative solutions and capabilities.
  • Engage stakeholders to ensure security objectives, protection needs, security requirements and associated validation methods are defined.
  • Validates and verifies system security requirements definitions and analysis and establishes system security design
  • Designs, develops, implements and/or integrates IA and security systems and system components including those for networking, computing and enclave environment to include those with multiple enclaves and with differing data protection/classification requirements
  • Assist architects and systems developers in the identification and implementation of appropriate information security functionality to ensure uniform application of Agency security policy and enterprise solutions
  • Contributes to the security planning, assessment, risk analysis, risk management, certification and awareness activities for system and networking operations
  • Reviews C&A documentation, providing feedback on completeness and compliance of its content

CLEARANCE REQUIRED: Active TS/SCI with polygraph

Qualifications

  • Bachelor of Science degree from an accredited university ideally in Computer Science, Information Assurance, Information Security System Engineering or related field with a minimum of 14 years of experience as an Information Systems Security Engineer (ISSE) or System Engineer on programs and/or contracts with the customer space
  • CISSP OR CASP certification required
  • Strong writing skills
  • Confidence and ability to present briefing to senior level DoD officials in both prepared briefings and/or in ad hoc discussions.
  • Expertise in the Risk Management Framework (RMF) and conducting cybersecurity risk assessments
  • Expertise in network technology and systems security engineering. Experience in identifying, researching, characterizing, and documenting security weaknesses related to operating systems, software applications, firmware, network hardware components, as well as network architecture design to identify protection needs and documented policies and procedures.
  • Experience developing and documenting system security requirements and conducting requirements gap analysis.
  • Experience with security monitoring and incident response capabilities
  • Experience with emerging technologies such as Zero Trust, Cloud Computing, etc.
  • Knowledge of, and practical experience with the NIST Special Publications 800 Series, CNSSI 1253, and DoD 8500.
  • Ability to work independently within a schedule and with little direction.

CONMD

careers.leidos.com/CONMD

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:

November 4, 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 $131,300.00 - $237,350.00

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.

Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
2,135,048 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Security
Similar stack
Same company
United States
Staff GRC Specialist 4 hours ago
$160k – $240k per year · In office · Full-Time · 10+ years exp · Bachelor's Degree · Cambridge
AI/ML
AI Agents
Cybersecurity
ISO 27001
SOC 2
FedRAMP
Apply
$66k – $154k per year · In office · Full-Time · 2+ years exp · Bachelor's Degree · Indianapolis
Apply
In office · Full-Time · 3+ years exp · Bachelor's Degree · Dallas
DevOps
Incident Management
Apply
$157k – $196k per year · Remote (United States) · Full-Time · 10+ years exp · Bachelor's Degree
AI/ML
Red Teaming
DevOps
AWS
Cybersecurity
Threat Modeling
Apply
$147k – $164k per year · Equity · Hybrid · 5+ years exp · Denver · New York · San Francisco
Python
AI/ML
Claude
Claude Code
Model Context Protocol
AI Agents
DevOps
GCP
CI/CD
AWS
GitHub
Linux
Cybersecurity
SOC 2
Dependabot
SIEM
DLP
Apply
Hybrid · Full-Time · Turku · Espoo · Copenhagen
DevOps
Splunk
Azure
AWS
GitHub
Cybersecurity
Zero Trust
Management
ServiceNow
Apply
Remote (EAEU) · 5+ years exp · Moscow
Python
SQL
AI/ML
LLM
DevOps
IAM
Cybersecurity
Zero Trust
Apply
In office · Contractor · 5+ years exp · New York
Java
SQL
DevOps
Rest API
GCP
Azure
AWS
IAM
SOAP
Cybersecurity
Okta
ISO 27001
HIPAA
Zero Trust
Least Privilege
Threat Modeling
Microsoft Entra ID
Active Directory
LDAP
Management
ServiceNow
Apply
M365 ARCHITECT 1 day ago
Hybrid · Full-Time · Manchester
AI/ML
Copilot
DevOps
Azure
Windows
DNS
DHCP
Cybersecurity
Zero Trust
Microsoft Defender for Cloud
Microsoft Entra ID
Active Directory
Management
Power Automate
Power Apps
SharePoint
Apply
In office · Full-Time · Madrid · Barcelona
AI/ML
EU AI Act
DevOps
Azure
IAM
Cybersecurity
GDPR
Zero Trust
Microsoft Entra ID
Active Directory
Apply
$116k – $210k per year · In office · TS/SCI · Full-Time · 12+ years exp · Bachelor's Degree · Washington
Cybersecurity
Maltego
Apply
$154k – $278k per year · In office · TS/SCI · Full-Time · 20+ years exp · Bachelor's Degree · Linthicum Heights
Cybersecurity
Zero Trust
Apply
$131k – $237k per year · In office · TS/SCI · Full-Time · 12+ years exp · Bachelor's Degree · Linthicum Heights
Apply
$108k – $195k per year · In office · Top Secret · Full-Time · 8+ years exp · Bachelor's Degree · Gaithersburg
Python
Java
C++
Bash
Python
pySpark
Boto3
Databases
Databricks
AI/ML
Spark
Pandas
DevOps
Rest API
Terraform
Ansible
CloudFormation
CI/CD
Git
AWS
Configuration Management
GitLab
Amazon S3
IAM
Amazon CloudWatch
Linux
Cybersecurity
Least Privilege
Management
Jira
Agile
Scrum
Apply
$87k – $157k per year · In office · TS/SCI · Full-Time · 4+ years exp · Bachelor's Degree · San Antonio
DevOps
Azure
AWS
Management
Confluence
Jira
Apply
$70k – $110k per year · Remote (United States) · Full-Time · 5+ years exp · Bachelor's Degree · United States
Python
SQL
PowerShell
Bash
AI/ML
Scikit-learn
Machine Learning
DevOps
Rest API
GCP
Azure
AWS
Grafana
Amazon EC2
Amazon S3
Linux
Windows
Cybersecurity
Wiz
CIS Benchmarks
PCI DSS
CVSS
EPSS
KEV
SIEM
Analytics
Tableau
Power BI
Management
Jira
Apply
Solution Director 10 hours ago
In office · United States
ABAP
ABAP
SAP BTP
Analytics
SAP BusinessObjects
Apply
In office · United States
Apply
Actuarial Analyst 10 hours ago
$58k – $104k per year · Hybrid · Full-Time · Chicago · Tulsa · Richardson · Albuquerque · Nashville
SQL
Apply
$102k – $184k per year · Hybrid · Full-Time · 4+ years exp · Chicago · Tulsa · Richardson · Albuquerque · Nashville
SQL
Apply
See all jobs
This is one of many
2,135,048 more open roles from verified company boards, updated every day.