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Added 4 mins ago
Systems Engineer (R&D Engineer 2 or 3)
Los Alamos National Laboratory
Los Alamos, NM
…demolition and disposal (D&D), tradecraft, construction, and project management skills employed in hazardous environments. TESTeam seeks an organized, problem-solving Systems Engineer who…
Added 4 mins ago
R&D Engineer 3
Los Alamos National Laboratory
Los Alamos, NM
Los Alamos National Laboratory is seeking an experienced mechanical engineer to join the Space Instrument Realization Group (ISR-5). In this role, you will lead the design, analysis,…
Added 4 mins ago
Linux Systems Engineer (Cybersecurity Technical Staff 1)
Los Alamos National Laboratory
Los Alamos, NM
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Added 4 mins ago
Shock and Vibration Test Engineer (R&D Engineer 2/3)
Los Alamos National Laboratory
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Structural Dynamics Engineer (R&D Engineer 2/3)
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Los Alamos, NM
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As a Science-Engineer Program Manager 2-3 (SE-PM 2-3) within the Associate Laboratory Directorate for Weapons Production (ALDWP) you will manage control accounts within the Plutonium…
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Building Mechanical Engineer
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Associate Software Engineer
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Added 4 mins ago
Mechanical Engineer, Data Center Operations Engineering
Meta
Santa Fe, NM
Meta is seeking a Mechanical Engineer to join our Data Center Operations Engineering team. Our data centers are the foundation upon which our rapidly growing infrastructure efficiently…
Added 4 mins ago
Supplier Support Manufacturing Engineer
GE Aerospace
Santa Fe, NM
The Supplier Support Manufacturing Engineer is responsible for addressing part shortages and ensuring supplier performance aligns with Clear to Build (CTB) targets. This role emphasizes…
Added 4 mins ago
GA
Sr Staff Applications Operations Engineer – Engineering Tools Automation & AI Ops
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Santa Fe, NM
- $131,000 to $174,000 USD / year
…application pods (software, hardware and electronic design, and project and portfolio management tools) for US and UK…
Added 7 mins ago
Mechanical Engineer III (5906)
Honeywell
Kansas City, MO
Provides project leadership and technical guidance on complex engineering projects.
Added 10 mins ago
Lead Field Service Engineer – Automation
GE Vernova
Unspecified, RI
Project Leadership: Act as the technical lead for on-site execution, providing direction to junior engineers and contractors while maintaining strict adherence to quality control and…
Added 10 mins ago
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Sr Staff Applications Operations Engineer – Engineering Tools Automation & AI Ops
GE Aerospace
Providence, RI
- $131,000 to $174,000 USD / year
…application pods (software, hardware and electronic design, and project and portfolio management tools) for US and UK…
Added 10 mins ago
Supplier Support Manufacturing Engineer
GE Aerospace
Providence, RI
The Supplier Support Manufacturing Engineer is responsible for addressing part shortages and ensuring supplier performance aligns with Clear to Build (CTB) targets. This role emphasizes…
Added 13 mins ago
Sr. Principal Quality Engineer
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Quality Engineering manages product and service quality planning, evaluation and control. This job family works cross-functionally in the development and implementation of prevention-based…
Added 14 mins ago
Data Platform Engineer
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Position Description: As a Data Engineer in this role, you will collaborate closely with various combatant commands, offering technical guidance for navigating the WDP environment. Your…
Added 14 mins ago
ForeScout Project Lead w/Public Trust
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We are seeking a ForeScout Project Lead. Theideal candidateis responsible forLead implementation and operations of network access control, endpoint visibility, and asset discovery…
Added 14 mins ago
C
Mobile Engineer
CBRE
Suitland, MD · Upper Marlboro, MD · Forestville, MD · Camp Springs, MD
- $36 to $45 USD / hour
As a CBRE Mobile Engineer, you will be responsible for facility building maintenance focusing on retail sites within the Upper Marlboro area. You’ll be focused on several trades including…
Added 14 mins ago
Principal Engineer Manufacturing/ 4th Shift
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Baltimore, MD
Northrop Grumman Mission Systems Sector has an immediate need for 4th shift Manufacturing Process Engineer 3 to support the Final Assembly area within manufacturing . The primary location…
Added 28 mins ago
Senior Manufacturing Systems Engineer - PLC Systems
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You will partner closely with the capital project team to design, build, commission, and qualify new equipment and systems needed for drug substance production. This role will develop…
Added 28 mins ago
Senior Staff AI / ML Solutions Engineer
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We have a new opening within the Clinical Research Group (CRG) of Thermo Fisher for a Senior Staff AI/ML Solutions Engineer to support the Finance organization and serve as the hands-on…
Added 29 mins ago
Application Engineer II (PAS-X) - SDF
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Durham, NC
…manufacturing applications. Improve reliability of process control systems to meet current & projected customer, business & regulatory requirements through the following activities: People…
Added 29 mins ago
Software Development Engineer, DevX LIFT
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…requirements and generate technical designs, and you will carry the project through all the software lifecycle stages. You’ll develop products that enable builders to develop and operate…
Added 29 mins ago
Senior Embedded Systems Verification Engineer
Eaton Corporation
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Eaton’s Critical Power Solutions Division (CPS) is seeking an Embedded Systems Verification Sr. Engineer. This position can be based on a hybrid basis in Raleigh, NC. Relocation is…

Closed listing

General Dynamics Information Technology

Sr. Network Security Engineer

Bethesda, MD, United States

The likely salary range for this position is $142,792 - $172,500.

This opening has closed.

The original listing is kept below for reference.

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Job details

Pay: The likely salary range for this position is $142,792 - $172,500.
Posting language: English
Posted: Nov 6, 2026

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Original job description

Archived listing. The details below describe a past opening.

Req ID: RQ230990

Type of Requisition: Regular

Clearance Level Must Be Able to Obtain: None

Public Trust/Other Required: NACI (T1)

Job Family: Cyber and IT Risk Management

Skills:

Cisco ASA Firewall,Cisco Firewall Security,Cisco Identity Services Engine (ISE),Cisco IPS,Cisco NAC

Certifications:

Cisco Certified Network Professional (CCNP) Security | Cisco - Cisco

Experience:

10 + years of related experience

Job Description:

The Senior Network Security Engineer is responsible for the configuration, deployment, and management of the customer’s NAC solution in a 24x7x365 environment. The senior engineer is accountable for but not limited to monitoring, configuration changes, accounts, and software updates for the customer’s NAC, Cisco ISE and IDS/IPS solutions. The engineer must be able to analyze, troubleshoot, and remediate issues within the enterprise. The engineer will also work closely with other teams to ensure that these solutions are performing to standard.

This position is located at 6555 Rock Spring Drive, Bethesda, MD travel is primarily local in the DC metro area.

Responsibilities:

Collaborate in the Architecture and Administration of LAN technologies of Cisco Switches and Cisco ASA Firewalls
Collaborate in the architecture and Administration of Network Access Control systems including but not limited Cisco ISE, Forescout, Cisco ACS, RSA, Cisco AnyConnect, Gigamon, IDS/IPS.
Troubleshoot and problem solve a wide variety of client/user issues and act as an escalation point for LAN/NAC related issues
Work closely with other IT functional teams to ensure cohesive support and strategies across the IT organization
Support the development of project schedules and execute as authorized
Maintain relationships with key Third-Party software/hardware vendors to provide support to the infrastructure as needed.
Provide daily support for tickets: service requests, incidents, problems, and tasks
Execute tasks to support projects
Provide regular updates to tickets
Produce daily/weekly status reports
Develop and execute change request plans
Identify appropriate security access control solutions to satisfy customer business objectives/requirements
Develop High-Level Designs (HLDs) and Low-Level Designs (LLDs)
Document physical and logical topologies for security solutions
Develop High-Level task lists/Work Breakdown Structure (WBS)
Determine the Level of Effort (LOE) for service/solutions
Develop Bills of Materials (BOMs) and participate in the decision-making process for the acquisition of current/new technologies for the customer environment
Document solution risks, issues and mitigation strategies
Create and maintain network diagrams
Provide Subject Matter Expertise for network security technologies
Meet with management and the customer to present and discuss design and implementation efforts

Required Skills:

BS degree in Computer Science, Information Systems or equivalent.
Must have a minimum of 10 years of experience implementing and maintaining Network Access Control technologies (Cisco IDS/IPS, ISE, Forescout, Cisco AnyConnect, etc.)
Must have minimum 10 years of experience in a Network Engineering role.
Experience with network infrastructure in enterprise datacenter solutions.
Experience with mid to large scale implementations of Network Access Control technologies.
Ability to obtain/maintain a Public trust which requires background check, fingerprints, etc.

Desired Skills:

Cisco CCNA/CCNA/Security, CCNP/CCNP Security, CCIE certifications
Cisco SISE certification
Forescout FSCA/FSAA/FSCE certifications
Experience with Cisco wireless LAN controllers.
Experience with Forescout security products.
Experience configuring Cisco ASAs and switches.
Experience configuring 802.1X.
Experience configuring and implementing network segmentation including VLANs and MPLS.
Experience with multiple end-system operating systems including Windows, Linux, Mac OS, and Apple IOS.
Experience with ServiceNow and Visio is an asset

The likely salary range for this position is $142,792 - $172,500. 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.

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

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 https://gdit.com/tc.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

About employer

More about this job

Skills

Risk management
IPS
CCNP
IDS
Troubleshoot
LAN
Microsoft Access
Control systems
Cisco AnyConnect
Decision making
Computer science
CCNA
Microsoft Windows
Linux
Apple iOS

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