Senior Cyber Engineer (TS/SCI w/CI Poly Required)

Everfox; Herndon (VA); Hybrid; USD 152,000 - 188,000; Full time

Benefits offered by this job

Flexible PTO

401k match

Healthcare coverages

Job summary

Everfox seeks a Senior Cyber Engineer to design, deploy, and support Cross Domain solutions for U.S. Government customers. expects hands-on engagement, advanced design, and customer-facing work across secure environments.

Candidates should have 8+ years in cyber engineering, strong Linux and scripting, and an active TS/SCI with CI Polygraph. Hybrid role in Herndon, VA, with travel and security knowledge across networks.

Qualifications

• 8+ years in a cyber engineer role supporting enterprise software solutions.
• Strong Linux and scripting experience.
• Active TS/SCI clearance with CI Polygraph.

Responsibilities

• Design, deploy, and support enterprise Cross Domain solutions for government clients.
• Engage with customers to plan and implement Everfox software solutions.
• Review requirements, design integrated solutions, and test interoperability.
• Troubleshoot Linux-based environments and deliver on-site support.
• Provide technical briefings to customers and leadership.

Skills

Linux

Scripting

Clearance TS/SCI

Communication

Networking concepts

Education

BS in Computer Science

DODI 8570.1-M Level I

SANS GSEC

CISSP preferred

Tools

Cross Domain Solutions

Virtualization

Security design tools

Job description

Trusted Connectivity for AI-Powered Dominance. Everfox delivers trusted connectivity to protect the world’s most critical environments and safeguard the sensitive data powering decision advantage. Built for mission-critical operations, Everfox protects what matters most by securing how data moves, how users access it, and how threats are neutralized across every domain. We enable mission speed and secure collaboration across networks, domains, and allies, while ensuring the data powering AI and advanced analytics remains trusted and protected. We don’t just defend systems; we deliver decision dominance. Our Purpose. Protect what matters most by enabling organizations to operate security in the most complex and high-risk digital environments. Our Vision. To be the most trusted authority in high-assurance cybersecurity, enabling secure collaboration across every domain. Our Belief. Security should never limit mission success – it should enable it. Our Promise. We deliver absolute confidence in environments where failure is not an option.

We’re hiring for a hybrid role. You’ll work on-site with your team several days each week (typically 2–3), with the specific days set by your manager. Because regular in-person collaboration is central to this job, we look for candidates who live within about 50 miles of the office. Everfox will consider reasonable accommodation as required by law.

Senior Cyber Engineer

About the role

The Senior Cyber Engineer will play a critical role in designing, deploying, and supporting enterprise Cross Domain solutions for U.S. Government customers. This position is focused on Everfox Cross Domain technologies and requires direct customer engagement to ensure successful implementation and ongoing support. Specialized training will be provided, and the candidate is expected to become proficient in all aspects of complex software solution deployment.

Location

Herndon, VA with 50% travel (CONUS and OCONUS).

Key Responsibilities

• Utilize Linux and scripting expertise to support and field critical customer-driven requirements, enabling secure data transfer.
• Engage directly with customers to provide advanced design, analysis, and implementation of Everfox software solutions.
• Review, analyze, and define requirements; design integrated solutions; implement Everfox and non-Everfox technologies; integrate multiple tools across disciplines; perform formal security and functional testing.
• Troubleshoot technical issues onsite in Linux-based environments, configure Everfox solutions, and deliver customer requirements.
• Work on complex network environments, troubleshoot issues, design and implement failover capabilities, and validate interoperability with enterprise components.
• Provide technical briefings to customers and Everfox corporate leadership as required.
• Deliver training, troubleshooting, and on-site/remote support to customers as mission needs require.

Key Knowledge and Skills

• Active TS/SCI clearance with CI Polygraph (currently in use).
• Minimum of 8 years’ experience in a cyber engineer role supporting enterprise software solutions.
• Strong experience in Linux and scripting.
• Excellent communication skills; ability to relay technical information to customers and laypersons.
• Interest or experience in cybersecurity practices, methodologies, technologies, application design and development, or operational environments.
• Excellent knowledge of networking concepts (e.g., TCP/IP, firewalls, routers).
• BS in Computer Science, Computer Engineering, Information Security, or equivalent.
• DODI 8570.1-M Compliance at IAT Level I; SANS GSEC, CISSP preferred.

Key Education Requirements

• Typically requires a minimum of 8 years of related experience.
• Professional certifications preferred (SANS GSEC, CISSP).
• May require compliance with DODI 8570.1-M at IAT Level I.

Additional Skills and Experience (Nice to Have)

• Experience with security design and architecture of Cross Domain solutions (CDS).
• Working knowledge of virtualized and networked environments.
• Strong verbal and technical writing skills.
• Experience with security COTS product integration (e.g., firewall, web gateways, Data Loss Prevention).
• Ability to prepare documentation to support Assessment and Authorization (A&A) activities.
• Apply knowledge of current Information Assurance (IA) policies as a contributor to secure solution architecture and design.

Work Schedule

Full-time, Monday–Friday, with flexibility for mission‑critical requirements. This position requires a minimum of 50% travel to CONUS and OCONUS customer facilities as needed.

A reasonable estimate of the base salary range for this role is: $151,800.00-187,500.00 USD The actual salary offered may vary within the range based on a candidates' unique experience, locale, and business needs.

In addition to a base salary and bonus plans, Everfox offers a generous benefits package including flexible PTO, a 401k match, and contribution to healthcare coverages. Our Talent Acquisition team will provide specific information regarding bonus eligibility and benefits offerings.

#LI-CZ1

Everfox is an equal employment opportunity employer and complies with all applicable federal, state, and local laws prohibiting discrimination. Everfox does not discriminate against any employee or applicant based on race, color, religion, sex, age, national origin, disability, veteran status, marital status, medical condition, or any other category protected by applicable law. If you are a qualified individual with a disability or a disabled veteran, you may request a reasonable accommodation if you are unable or limited in your ability to use or access the Company’s career webpage as a result of your disability. You may request reasonable accommodations by sending an email to [e-mail]. Everfox is a Federal Contractor. Certain positions with Everfox require access to controlled goods and technologies subject to the International Traffic in Arms Regulations or the Export Administration Regulations. Applicants for these positions may need to be “U.S. Persons,” as defined in these regulations. Generally, a “U.S. Person” is a U.S. citizen, lawful permanent resident, or an individual who has been admitted as a refugee or granted asylum. Applicants must have the right to work in the location to which you have applied.