Sr. Network Security Engineer
Company: CACI
Location: Columbia
Posted on: April 1, 2026
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Job Description:
Job Title: Sr. Network Security Engineer Job Category:
Information Technology Time Type: Full time Minimum Clearance
Required to Start: TS/SCI with Polygraph Employee Type: Regular
Percentage of Travel Required: Up to 10% Type of Travel: None * * *
The Opportunity: The Sr. Network Engineer will work within the
Network Security Implementation and Sustainment (NSIS) Services
section to provide assistance in all aspects of network management
from network design through implementation, maintenance, and
upgrading of existing networks on a team working 24 hours, 7 days a
week (multiple shifts available). Responsibilities: Analyzes
design, specifications, and related documents Implements
communication system requirements to support the distributed
functionality of a software engineering environment Analyzes
network characteristics (e.g. traffic connect time, transmission
speeds, packet sizes and throughput), troubleshoots problems and
recommends procurement and/or modifications to network components
Designs solutions, integrates, configures, deploys, tests and
provides support for numerous types of network devices, interfaces
and methodologies. Optimizes end-to-end system performance and
dataflow management. Configures/optimizes network to connect to
various front- and back-end components. Coordinates with system
engineering and dataflow efforts to ensure proper mission
operations with minimum down time. Facilitates implementation of
high-speed, scalable, fault-tolerant network topologies as
applicable to WAN/LAN design. Implements specific network solutions
to support server requirements to include load-balancing, VPNs,
firewall contexts, and network address translation (NAT) where
appropriate. Minimizes network latency and maximizes data
throughput through design analysis and network performance
monitoring tools. Manages assigned tasks and provides guidance to
junior Network Engineers. Validates new/existing dataflow and data
formats. Coordinates with appropriate dataflow organizations and
end-customer recipients, follow-on data repositories and tasking
organizations and understands potential adverse impacts on
system-wide dataflow. Designs, integrates, tests and deploys RF
communications solutions. Leads large efforts of dynamic
requirements and scale. Works with Systems Engineers and
cross-organizational teams to define requirements. Resolves complex
network problems, operate network analyzers, WAN test equipment and
network simulators. Designs, implements, and evaluates security
systems Contributes to security planning, assessment, risk
analysis, and risk management Supports the Government in providing
technical leadership to engineering teams Recommends corporate
solutions to resolve security requirements Supports the Government
in enforcement of design / implementation of trusted relationships
among external systems and architectures Qualifications: Ten (10)
years experience in programs and contracts of similar scope, type,
and complexity is required. Bachelor’s degree in engineering from
an accredited college or university is required. F our (4) years of
additional network engineering experience may be substituted for a
bachelor’s degree. Five (5) years experience with the following
Network Tools; What’s Up Gold and NetFlow. Five (5) years
experience with the following SIGINT tools: Common View/Max View,
Triton, and TUMMS. Three years’ experience with DCID 6/3 and/or ICD
503, “Intelligence Community Information Technology Systems
Security Risk Management, Certification and Accreditation”, dated
15 September 2008 Three years’ experience creating firewall rule
sets from analysis of network traffic Three years’ experience with
component validation of security devices Three years’ experience
integrating boundary solutions into customer networks Three years’
experience configuring switches, routers, and firewalls - What You
Can Expect: A culture of integrity. At CACI, we place character and
innovation at the center of everything we do. As a valued team
member, you’ll be part of a high-performing group dedicated to our
customer’s missions and driven by a higher purpose – to ensure the
safety of our nation. An environment of trust. CACI values the
unique contributions that every employee brings to our company and
our customers - every day. You’ll have the autonomy to take the
time you need through a unique flexible time off benefit and have
access to robust learning resources to make your ambitions a
reality. A focus on continuous growth. Together, we will advance
our nation's most critical missions, build on our lengthy track
record of business success, and find opportunities to break new
ground — in your career and in our legacy. Pay Range : There are a
host of factors that can influence final salary including, but not
limited to, geographic location, Federal Government contract labor
categories and contract wage rates, relevant prior work experience,
specific skills and competencies, education, and certifications.
Our employees value the flexibility at CACI that allows them to
balance quality work and their personal lives. We offer competitive
compensation, benefits and learning and development opportunities.
Our broad and competitive mix of benefits options is designed to
support and protect employees and their families. At CACI, you will
receive comprehensive benefits such as; healthcare, wellness,
financial, retirement, family support, continuing education, and
time off benefits. The proposed salary range for this position is:
$120,800 - $265,800 CACI is an Equal Opportunity Employer. All
qualified applicants will receive consideration for employment
without regard to race, color, religion, sex, pregnancy, sexual
orientation, age, national origin, disability, status as a
protected veteran, or any other protected characteristic.
Keywords: CACI, Dundalk , Sr. Network Security Engineer, IT / Software / Systems , Columbia, Maryland
