Top 2042 Network security engineer Jobs in Columbia, Md

Site Reliability Engineer - TS/SCI with Poly
General Dynamics Information Technology —Annapolis Junction, MD
- $128,039 - $173,229 a year
- Computer Science
- 5 years
- Senior level
- Paid time off
- 401(k) matching
Mobile Device Secuirty SME
Fusion Technology-LLC —Washington, DC
- Full-time
- Computer Science
- Office
- 8 years
- Paid training
- Health savings account
Quick Apply
7d
Senior Unified Communications (UC) Engineer
Amentum —Fort George G Meade, MD
- $200,000 - $250,000 a year
- 8 hour shift
- Microsoft Excel
- Azure
- Microsoft Outlook
- Employee stock purchase plan
- Paid holidays
Quick Apply
Principal / Senior Principal Embedded Systems Security Engineer
Northrop Grumman —Baltimore, MD
- $119,600 - $179,400 a year
- Overtime
- Doctor of Philosophy
- Travel
- 1 year
- Paid holidays
- Disability insurance
MCCO Senior Test Engineer | Active TS/SCI CI Poly
General Dynamics Information Technology —Fort Meade, MD
- $106,250 - $143,750 a year
- 5 years
- Bachelor's degree
- Software development
- Paid time off
- 401(k) matching
CNO (CNO) SOFTWARE ENGINEER II - Malware Reverse Engineer - 1829
ASD Global —Annapolis Junction, MD
- From $80 an hour
- Contract
- Background check
- Computer science
- Computer Science
- Relocation assistance
Quick Apply
14d
Sr. Network Project Engineer
Systems Technology Forum —Fort Meade, MD
- Full-time
- Bachelor of Science
- Bachelor's degree
- Senior level
- AD&D insurance
- Health insurance
Quick Apply
10d
Mobile Malware Engineer
Peraton —Linthicum, MD
- $135,000 - $216,000 a year
- Full-time
- Computer science
- Computer Science
- Research
- Health savings account
- Paid holidays
Security Engineer III, Red Team Operator (TS Clearance)
Deloitte —Baltimore, MD
- $119,000 - $198,400 a year
- Full-time
- Azure
- Computer Science
- Windows
9d
Sr. Network Test Engineer
Systems Technology Forum —Fort Meade, MD
- Full-time
- Master's degree
- Bachelor's degree
- Senior level
- AD&D insurance
- Health insurance
Quick Apply
10d
MCCO Software Developer SME | Active TS/SCI CI Poly
General Dynamics Information Technology —Fort Meade, MD
- $170,000 - $230,000 a year
- Azure
- Windows
- Java
- Paid time off
- 401(k) matching
UC Engineer - Senior
Amentum —Fort Meade, MD
- $180,000 - $210,000 a year
- Full-time
- System design
- In-person
- Senior level
- Health savings account
- Health insurance
Quick Apply
Mid-Sr. Network Engineer TS/SCI Poly
Leidos —Annapolis Junction, MD
- $92,300 - $166,850 a year
- Full-time
- Engineering
- System design
- 8 years
- Paid holidays
- Paid time off
13d
Senior AI/ML Software Engineer - Cyber Network Operations
CACI —Fort Meade, MD
- $131,800 - $290,000 a year
- Full-time
- Computer Science
- Data analysis skills
- 11+ years
- Health insurance
MCCO Test Engineer | Active TS/SCI CI Poly
General Dynamics Information Technology —Fort Meade, MD
- $88,400 - $119,600 a year
- Mid-level
- Bachelor's degree
- Software development
- Paid time off
- 401(k) matching
Security Engineer III, SIEM Engineer (Secret Clearance)
Deloitte —Baltimore, MD
- $102,500 - $188,900 a year
- Full-time
- Azure
- Computer Science
- Office
Exchange Engineer - TS/SCI
General Dynamics Information Technology —Annapolis Junction, MD
- $128,039 - $173,229 a year
- Bachelor's degree
- Travel
- Senior level
- Paid time off
- 401(k) matching
VMWare Engineer - TS/SCI w/ Polygraph
General Dynamics Information Technology —Annapolis Junction, MD
- $147,292 - $199,278 a year
- Azure
- 6 years
- Office
- Paid time off
- 401(k) matching
Linux Automation Engineer
Peraton —Linthicum, MD
- $104,000 - $166,000 a year
- Monday to Friday
- Computer Science
- Office
- 3 years
- Health savings account
- Paid holidays
DevOps Engineer - Fort Meade, MD - TS/SCI with Full Scope Polygraph
D&Z Federal Division —Fort Meade, MD
- $126,000 - $180,000 a year
- Azure
- Mid-level
- Bachelor's degree
Quick Apply
13d

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network security engineer jobs near columbia, md

Site Reliability Engineer - TS/SCI with Poly

General Dynamics Information Technology -
Annapolis Junction, MD

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Job Details

$128,039 - $173,229 a year

Benefits

Internal mobility program
Paid time off
401(k) matching

Qualifications

Stakeholder engagement
Data storage
Tooling
Infrastructure as Code (IaC)
IT system monitoring
Virtualization tools
SRE
Server virtualization
Cloud automation
TS/SCI with Polygraph
Network monitoring tools
DevOps automation
Server management automation
ITIL implementation
Stakeholder relationship building
Stakeholder management
System performance monitoring

Full Job Description

Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

SITE RELIABILITY ENGINEER (SRE)

Own your opportunity. Make your impact

As a Site Reliability Engineer (SRE) supporting the CIO Infrastructure Services (CIS) program, you will help maintain the reliability, scalability, and performance of enterprise infrastructure services deployed across more than 250 global sites. You will engineer and optimize systems, automate operational workflows, strengthen monitoring capabilities, and ensure the stability and resilience of mission critical‑ environments.

You will partner closely with Engineering, Operations, Tech Refresh, Cybersecurity, and Data Center teams to ensure seamless integration of new capabilities into a high availability production environment, helping the Defense Intelligence Enterprise remain secure, connected, and ‑mission ready‑.

HOW A SITE RELIABILITY ENGINEER WILL MAKE AN IMPACT

Ensure the reliability, availability, and performance of enterprise IT systems across global environments
Develop automation solutions that reduce manual effort, streamline operational tasks, and improve system resiliency
Build and maintain monitoring, alerting, and observability capabilities supporting 24/7/365 enterprise operations
Perform root cause analysis (RCA), corrective action planning, and long-term‑ problem remediation for infrastructure issues
Partner with engineering teams to validate, test, and integrate new systems, upgrades, baselines, and enhancements into production
Improve system performance through configuration tuning, capacity planning, and optimization of compute, storage, network, and virtualized environments
Develop and maintain infrastructure-as-code, scripts, and operational automation to support consistent and repeatable deployments
Support enterprise incident response, including triage, escalation, and service restoration for high visibility‑ events
Maintain operational documentation including SOPs, runbooks, baselines, dashboards, and architectural diagrams
Ensure compliance with ITIL/ITSM processes—including Incident, Problem, Change, and Configuration Management
Strengthen the enterprise security posture by supporting patching, vulnerability remediation, and RMF related‑ configuration updates
Coordinate with global operations teams to ensure service continuity, readiness, and adherence to SLAs and KPIs
Leverage analytics, metrics, and monitoring data to identify performance trends and drive continuous service improvement initiatives

WHAT YOU’LL NEED TO SUCCEED

Required:

CLEARANCE: Active TS/SCI a favorable Polygraph
EDUCATION: Bachelor’s degree in computer science, engineering, IT, or related technical field
(Additional experience may substitute for degree)
8+ years of experience in site reliability engineering, systems engineering, enterprise operations, or DevOps roles
Hands‑on experience with automation tools (PowerShell, Python, Ansible, Terraform, etc.)
Strong experience supporting enterprise infrastructure domains including server compute, storage, virtualization, networking, and monitoring
Experience with enterprise monitoring platforms (e.g., SolarWinds, SCOM, Splunk, Nagios, ELK)
Strong understanding of ITIL/ITSM workflows and operational governance processes
Demonstrated ability to troubleshoot complex technical issues across distributed enterprise environments

Strong communication and collaboration skills working across multidisciplinary technical teams Excellent communication and stakeholder engagement skills
US citizenship required
LOCATION: Onsite

Preferred:

ITIL v4 Foundations certification
Experience supporting the client, DoDIIS, or Intelligence Community environments
Familiarity with CMMC, NIST 800‑53, policies, and RMF processes
Experience with ServiceNow/Service Central and automated ticketing workflows
Experience supporting hybrid cloud, virtual desktop infrastructure (VDI), or hyperconverged platforms

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
Growth: AI-powered career tool that identifies career steps and learning opportunities
Support: An internal mobility team focused on helping you achieve your career goals
Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

#CIS

Work Requirements

Years of Experience

5 + years of related experience

may vary based on technical training, certification(s), or degree

Certification

Travel Required

None

Citizenship

U.S. Citizenship Required

Salary and Benefit Information

The likely salary range for this position is $128,039 - $173,229. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.
View information about benefits and our total rewards program.

Our Identity Verification Process

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work

We are GDIT. A global technology and professional services company that delivers technology solutions and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50+ countries worldwide, offering leading mission-ready capabilities in AI, cloud, cyber and software development.

Join our Talent Community to stay up to date on our career opportunities and events at gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Apply Now

Refine Your Search

network security engineer jobs in columbia, md

Site Reliability Engineer - TS/SCI with Poly

Mobile Device Secuirty SME

Senior Unified Communications (UC) Engineer

Principal / Senior Principal Embedded Systems Security Engineer

MCCO Senior Test Engineer | Active TS/SCI CI Poly

CNO (CNO) SOFTWARE ENGINEER II - Malware Reverse Engineer - 1829

Sr. Network Project Engineer

Mobile Malware Engineer

Security Engineer III, Red Team Operator (TS Clearance)

Sr. Network Test Engineer

MCCO Software Developer SME | Active TS/SCI CI Poly

UC Engineer - Senior

Mid-Sr. Network Engineer TS/SCI Poly

Senior AI/ML Software Engineer - Cyber Network Operations

MCCO Test Engineer | Active TS/SCI CI Poly

Security Engineer III, SIEM Engineer (Secret Clearance)

Exchange Engineer - TS/SCI

VMWare Engineer - TS/SCI w/ Polygraph

Linux Automation Engineer

DevOps Engineer - Fort Meade, MD - TS/SCI with Full Scope Polygraph

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