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Cybersecurity Software Engineer Jobs in Fairfax, VA

Cybersecurity Software Developer Job Category: Information Technology Time Type: Full time Minimum Clearance Required to Start: TS/SCI with Polygraph Employee Type: Regular Percentage of Travel ...

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CompTIA Security+ certification About Us Founded in 2007 and headquartered in Columbia, Maryland, Synergy ECP is a leading provider of cybersecurity, software and systems engineering and IT services ...

... Engineer, Cybersecurity Software Developer, Secure Systems Developer, Data Protection Software Engineer, Network Security Developer, Cross-Domain Architect, Secure Application Developer, Secure ...

... Engineer, Cybersecurity Software Developer, Secure Systems Developer, Data Protection Software Engineer, Network Security Developer, Cross-Domain Architect, Secure Application Developer, Secure ...

... Engineer, Cybersecurity Software Developer, Secure Systems Developer, Data Protection Software Engineer, Network Security Developer, Cross-Domain Architect, Secure Application Developer, Secure ...

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Showing results 1-20

Cybersecurity Software Engineer information

See Fairfax, VA salary details

$70K

$131.7K

$165.6K

How much do cybersecurity software engineer jobs pay per year?

As of Aug 31, 2026, the average yearly pay for cybersecurity software engineer in Fairfax, VA is $131,739.00, according to ZipRecruiter salary data. Most workers in this role earn between $115,500.00 and $149,700.00 per year, depending on experience, location, and employer.

What does a cybersecurity software engineer do?

A Cybersecurity Software Engineer is responsible for designing, developing, and maintaining software systems that protect organizations from cyber threats. They create security tools, implement encryption protocols, and work to identify and fix vulnerabilities in software applications. Their daily tasks often include writing secure code, performing security assessments, and collaborating with other IT professionals to ensure robust protection against hackers and data breaches. This role is crucial for safeguarding sensitive information and maintaining the integrity of digital systems.

How does a cybersecurity software engineer typically collaborate with other teams in an organization?

Cybersecurity Software Engineers regularly work alongside IT, DevOps, and security operations teams to ensure that software applications are secure throughout their development lifecycle. They participate in code reviews, threat modeling sessions, and incident response drills, providing their expertise to identify and mitigate vulnerabilities. Collaboration often involves communicating complex technical risks in a way that non-technical stakeholders can understand, fostering a proactive security culture across departments.

What are the key skills and qualifications needed to thrive as a cybersecurity software engineer, and why are they important?

To thrive as a Cybersecurity Software Engineer, you need strong programming skills (such as Python, C/C++, or Java), deep knowledge of security protocols, and a bachelor’s degree in computer science or a related field. Familiarity with tools like Wireshark, Metasploit, SIEM systems, and certifications such as CISSP or CEH are commonly required. Analytical thinking, problem-solving, and strong communication skills help you anticipate threats and collaborate effectively with cross-functional teams. These skills are crucial for designing secure software, identifying vulnerabilities, and protecting organizational assets from cyber threats.

What is the difference between Cybersecurity Software Engineer vs Network Security Engineer?

AspectCybersecurity Software EngineerNetwork Security Engineer
Required CertificationsCompTIA Security+, CISSP, CEHCCNA Security, CISSP, CompTIA Security+
Work EnvironmentDevelops security software, tools, and protocols; often in software development teamsDesigns and implements network security measures; works closely with network teams
Industry UsageTech companies, software firms, cybersecurity firmsTelecom, enterprise IT, government agencies
Common Search/ComparisonFocuses on software security solutionsFocuses on network infrastructure security

While both roles aim to protect digital assets, a Cybersecurity Software Engineer primarily develops security software and tools, whereas a Network Security Engineer focuses on securing network infrastructure. Both roles require similar certifications and often collaborate to ensure comprehensive security.

Can a cybersecurity software engineer work in cybersecurity?

Yes, a cybersecurity software engineer works directly in cybersecurity by developing and implementing security tools, systems, and protocols to protect computer networks and data. Their skills in programming, threat analysis, and security best practices are essential for safeguarding digital assets in various organizations.
Infographic showing various Cybersecurity Software Engineer job openings in Fairfax, VA as of August 2026, with employment types broken down into 1% As Needed, 83% Full Time, 13% Part Time, and 3% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $131,739 per year, or $63.3 per hour.

Senior Cybersecurity Software Engineer

Chantilly, VA • On-site

Full-time

Medical, Retirement, PTO

Re-posted 29 days ago


Job description

Job Title: Senior Cybersecurity Software Engineer
Job Category: Engineering
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI
Employee Type: Regular
Percentage of Travel Required: Up to 10%
Type of Travel: Continental US
* * *
The Opportunity:
CACI is looking to hire a Senior Cybersecurity Software Engineer to join our Spectral Cyber team supporting the production of high-quality software applications to support the U.S. Navy mission. The ideal candidate will support the U.S. Navy Spectral Program. Spectral is a seven-year $1.2B program to provide the U.S. Navy's next-generation signals intelligence, electronic warfare, and information operations software technologies. The Spectral system is critical to the ability for our forces to fight and win in the increasingly sophisticated and complex cyber and electronic threats of our adversaries.
We are seeking someone with technical experience who is highly skilled in cyber engineering to be responsible for toolset design, implementation, automation, and optimization of Spectral enterprise-wide security solutions. Desired cyber engineering skillsets will be responsible for continuous development of secure software solutions and hardened mission applications.
The ideal candidate brings hands-on cyber engineering experience with cyber analytics and reverse engineering tactics on Kubernetes infrastructure, who thrives in fast-paced, complex environments, and has a proven track record of technical advancements in cyber engineering, cybersecurity engineering, analysis, and modern software deliverables.
Responsibilities:
-- Automate cybersecurity architecture within the infrastructure as code (IaC) for on-prem and distributed platforms and mission applications with end-to-end integrated Zero Trust capability to deliver high quality software outcomes.
-- Engineer and integrate security controls into the IaC, platform as a service (PaaS), and mission applications to automate and streamline outputs for IAM, encryption, logging, and monitoring compliance validation.
-- Streamline hardening of IaC, PaaS, and mission applications leveraging STIG/SRGs, CIS benchmarks, and industry best practices.
-- Support secure software deployments, containerized platforms and mission applications.
-- Coordinate and engineer cybersecurity tools pipeline integration, enforcement, and automate tool outputs into dynamic decision-making dashboards.
-- Engineer and automate RMF security control implementation into the IaC, PaaS, and mission applications to modernize and rapidly produce body of evidence for continuous delivery, monitoring, updates, and improvements.
-- Modernize vulnerability remediation outcomes and engineer continuous system resiliency, adaptability, drift correction, and responsiveness to updates.
-- Write Ansible playbooks and scripts and perform peer review of cyber engineer as well as software developer code commits.
-- Ensure end-to-end system patch management enforcement, SBOM, RBOM, and artifact generation.
-- Capable of collaborating cross-functionally with software development, IT, DevOps, hardware/engineering teams, and customer to continuously integrate and improve security posture throughout the SDLC.
Qualifications:
Required:
-- Bachelor's degree in computer science, software engineering, cyber engineering, systems engineering, information technology, or a related field.
-- 7+ years' experience in cyber engineering, with at least 5 years in moder software technologies.
-- Proven Kubernetes platform security and modular architectures, technical enterprise architecture, secure SDLC, and cloud-native security.
-- Deep technical understanding of cyber and security engineering toolsets and deployment methodologies, and SIEM, SAST, DAST, SCA, and vulnerability exposure technologies.
-- Hands-on experience with Zero Trust tools and implementation, micro-segmentation, and identity-centric security services.
-- Demonstrated IaC, PaaS, and mission application knowledge, to include ability to automate RMF, control engineering, metrics reporting, and telemetry pipelines.
-- Active TS/SCI and an ability to obtain the required Polygraph.
-- Sec+ and/or CISSP certification, or an ability to obtain within 90 days of onboarding.
-- Experience in at least one or more scripting languages (e.g., bask, python, java, powershell, etc), and knowledge in Ansible playbooks and ArgoCD integration for automation.
-- Working knowledge in network protocols, TCP/IP stack, firewalls, and packet inspection tools on Linux, Windows, and Kubernetes system security.
Desired:
-- More than one industry certification (CISSP, GSEC, CEH, GCIH, CISSP Associate), or equivalent.
-- Familiarity in multiple programming / scripting languages to streamline automation.
-- Exposure to DevSecOps pipelines and tools (e.g., Jenkins, Terraform, Ansible, ArgoCD, etc).
-- Experience in performing engineering tasks, cross-enclave environments, classified systems, highly regulated environments, and compliance-as-code.
-- Knowledge of advanced threat modeling and adversary emulation techniques (e.g., MITRE ATT&CK, etc).
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.
Since this position can be worked in more than one location, the range shown is the national average for the position.
The proposed salary range for this position is:
$98,500-$206,800
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.