Top 1869 Security Engineer Jobs in Washington, DC

Endpoint Security as a Service (ESS) Engineer
Leidos —Washington, DC
- $92,300 - $166,850 a year
- Full-time
- System design
- Analysis skills
- Fair chance
Data Security Engineer
System One —Vienna, VA
- Contract
- Hybrid work
- System design
- Mid-level
- Continuous improvement
- Health insurance
- Dental insurance
Quick Apply
Systems Engineer – Microsoft 365 Security & Compliance / Endpoint Security Engineer (GCC)
Leidos —Washington, DC
- $107,900 - $195,050 a year
- Full-time
- Hybrid work
- Windows
- Continuous improvement
- Fair chance
Junior Security Engineer
Maximus —Tysons, VA
- $40,000 - $65,000 a year
- Remote
- Computer science
- Azure
- Computer Science
- Paid holidays
- Disability insurance
SIEM / Threat Monitoring Analysts
Blue Rose Consulting Group, Inc. —Washington, DC
- Mid-level
Quick Apply
Cyber Security Engineer
UScontracting —Annapolis Junction, MD
- $175,000 - $260,000 a year
- Email
- Mid-level
Endpoint Security Engineer - Mid
Everforth ECS —Washington, DC
- Senior level
Vulnerability Management Program Engineer
US Securities and Exchange Commission —Washington, DC
- $153,114 - $259,402 a year
- Online Application
- Background check
- Customer service
- Pass drug screening
14d
Security Engineer
Meta —Washington, DC
- $271,000 - $347,000 a year
- Computer science
- Computer Science
- Bachelor of Science
Information Systems Security Engineer (ISSE)
CyberIP Services —Annapolis Junction, MD
- Email
- Mid-level
- Windows
Lead Cyber Security Engineer (Remote)
CareFirst BlueCross BlueShield —Reston, VA
- $122,400 - $243,100 a year
- Online Application
- Remote
- Computer Science
- Bachelor's degree
- Team management
- 401(k)
Quick Apply
SOC Analyst (Security Monitoring)
RIVIDIUM —Alexandria, VA
- Weekends as needed
- Mid-level
- Bachelor's degree
- Experience equivalent to degree accepted
Security & Compliance Engineer
Maximus —Tysons, VA
- $60,000 - $100,000 a year
- Remote
- Computer science
- 6 years
- Computer Science
- Paid holidays
- Disability insurance
Information Assurance / Security Engineer, Associate
AMERICAN SYSTEMS —McLean, VA
- $80,000 - $90,000 a year
- Full-time
- Remote
- DevOps
- Mid-level
- Scripting
- Retirement plan
IT & Cyber Security Engineer
OnTrac —Washington, DC
- $125,600 - $188,400 a year
- Remote
- HIPAA
- Mid-level
- 8 years
- Paid parental leave
- Paid holidays
Quick Apply
13d
Information Security Engineer
MUNICIPAL SECURITIES RULEMAKING BOARD —Washington, DC
- $145,000 - $170,000 a year
- Full-time
- 7 years
- Continuous improvement
- Senior level
Quick Apply
Cybersecurity Analyst, IT Operations
Fors Marsh —Arlington, VA
- $110,000 - $125,000 a year
- Full-time
- Remote
- Background check
- 7 years
- Computer Science
- Disability insurance
- Dental insurance
Quick Apply
IT & Security Engineer Lead
Pharmacy First Health —Washington, DC
- $110,000 - $135,000 a year
- Full-time
- 5 years
- HIPAA
- Office
Quick Apply
IT Security Risk and Compliance Analyst II
United Therapeutics —Silver Spring, MD
- $91,000 - $125,000 a year
- Full-time
- Hybrid work
- Mid-level
- High school diploma or GED
- Analysis skills
- Paid parental leave
- Employee stock purchase plan
Information Security Engineer
Palantir Technologies —Washington, DC
- $135,000 - $200,000 a year
- Full-time
- Hybrid work
- Azure
- Mid-level
- Windows
- Commuter assistance
- Paid parental leave

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Endpoint Security as a Service (ESS) Engineer

Leidos -
Washington, DC

Apply Now

Job Details

Full-time
$92,300 - $166,850 a year

Qualifications

Endpoint Security
DoD 8570
Windows support
Data Loss Prevention
IAT
Windows Server administration

Full Job Description

Description

Leidos is seeking a skilled and driven Endpoint Security as a Service (ESS) Engineer and Systems Administrator to join our team at the Washington Navy Yard — where innovation meets mission.

What You’ll Do

As an ESS Engineer and Systems Administrator, you won’t just maintain systems — you’ll elevate them. You’ll be part of a collaborative team that installs, configures, and fine-tunes advanced security solutions to ensure critical network infrastructure runs at peak performance. You’ll also evaluate emerging technologies and shape the future of endpoint protection across a highly sensitive environment. You will ensure that our systems comply with the latest security patches and configurations.

Your Impact Includes:

Overseeing the full lifecycle of the ESS and its agents — install, manage, maintain, and optimize.
Creating and deploying custom ESS signatures and policies.
Proactively monitoring ESS for intrusions, failures, and performance anomalies.
Ensuring reliable and secure endpoint operations across all clients and servers.
Troubleshooting ESS deployments and policy rollouts across local and remote systems.
Conducting threat analysis and crafting custom security rules tailored to advanced exploits and vulnerabilities.
Providing in-depth reporting on system health, event trends, and module performance.
Supporting major updates and compliance efforts, including STIG-mandated Trellix upgrades.
Helping design and evaluate network components and develop cutting-edge technical solutions.

Basic Qualifications:

Active Top Secret clearance (SCI eligible).
8+ years of IT experience, including 2+ years focused on ESS (or equivalent experience in lieu of degree).
DOD 8570 IAT Level II certification or higher.
Expertise in Windows Server 2016+ and endpoint platforms such as Trellix Agent, ENS FW, PA, DLP, RSD, and ePO.
Strong analytical skills with a knack for troubleshooting under pressure.

Preferred Qualifications:

TS/SCI clearance and DOD 8570 IAT Level III certification.
Hands-on experience with RedHat Enterprise Linux, VMware, Microsoft Hypervisor, or RedHat VM Manager.
Familiarity with SADR environments and maintaining ePO servers.
Completion of Basic and Advanced ESS DISA training.

If you're ready to take on one of the most vital roles in national security cyber defense — let’s talk. This is your chance to lead from the front in safeguarding critical systems at one of the country’s most

DABAOPP1

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:

June 30, 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 $92,300.00 - $166,850.00

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.

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.

Securing Your Data

Beware of fake employment opportunities using Leidos’ name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at [email protected].

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

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.

Apply Now

Refine Your Search

Security Engineer jobs in Washington, DC

Endpoint Security as a Service (ESS) Engineer

Data Security Engineer

Systems Engineer – Microsoft 365 Security & Compliance / Endpoint Security Engineer (GCC)

Junior Security Engineer

SIEM / Threat Monitoring Analysts

Cyber Security Engineer

Endpoint Security Engineer - Mid

Vulnerability Management Program Engineer

Security Engineer

Information Systems Security Engineer (ISSE)

Lead Cyber Security Engineer (Remote)

SOC Analyst (Security Monitoring)

Security & Compliance Engineer

Information Assurance / Security Engineer, Associate

IT & Cyber Security Engineer

Information Security Engineer

Cybersecurity Analyst, IT Operations

IT & Security Engineer Lead

IT Security Risk and Compliance Analyst II

Information Security Engineer

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