Systems Engineer SME (TS/SCI with Poly Required)

GCI; Herndon (VA); On-site; USD 164,382 - 274,518; Full time

Job summary

GCI in Herndon, Virginia, seeks a Systems Engineer SME with a TS/SCI clearance for a full-time position. The role involves troubleshooting complex cryptographic systems and providing technical support. The ideal candidate should have 15+ years of relevant experience, in-depth knowledge of crypto devices, and familiarity with cloud computing platforms. A Bachelor’s degree in Engineering or a related field is preferred. The company promotes equal opportunity for all employees.

Qualifications

• 15 years of demonstrated related work experience.
• Experience with customer crypto devices configuration, operation, and maintenance.
• Knowledge of cryptographic protocols related to encryption and key management.

Responsibilities

• Troubleshoot complex technical issues related to customer crypto devices.
• Provide technical guidance and support to stakeholders.
• Collaborate with cross-functional teams to achieve project goals.

Skills

Cryptographic principles

Technical troubleshooting

Cloud computing platforms

DevOps practices

Communication skills

Team collaboration

Education

Bachelor of Science in Engineering or related field

Tools

GEM crypto manager(s) software

AWS

Azure

Google Cloud

Job description

Systems Engineer SME (TS/SCI with Poly Required)

Job Category: IT Infrastructure and Operations

Requisition Number: SYSTE002097

Posted: May 7, 2026

Employment Type: Full-Time

Work Location: On-site

Salary Range: $164,382.40 USD to $274,518.40 USD

Locations

Herndon
Herndon, VA, USA

Description

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leveraging the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry.

As a SME Systems Engineer, a typical day will include the following duties and skills:

Required Skills

• Demonstrated experience with in-depth knowledge of customer crypto devices such as the E-100, FLEX, Micro, Nano, TL-10G, TL-1g, and next generation crypto devices, including their configuration, operation, and maintenance.
• Demonstrated experience designing, implementing, and troubleshooting complex cryptographic systems.
• Demonstrated experience with technical knowledge of cryptographic principles, protocols, and technologies, including those related to customer crypto devices.
• Demonstrated experience troubleshooting complex technical issues related to customer crypto devices and developing effective solutions.
• Demonstrated experience with cryptographic protocols and standards, such as those related to encryption, decryption, and key management.
• Demonstrated experience providing technical guidance and support to stakeholders, including written training documentation.
• Demonstrated experience working collaboratively with cross‑functional teams, including engineers, technicians, and other stakeholders, to achieve project goals and objectives.
• Demonstrated experience with GEM crypto manager(s) software.
• Demonstrated experience providing technical guidance and support to stakeholders, including actively training personnel.

Desired Skills

• Demonstrated experience with cloud computing platforms such as AWS, Azure, and Google Cloud.
• Demonstrated experience and knowledge of DevOps practices and tools.
• Demonstrated experience with technical knowledge of cryptographic principles, protocols, and technologies, including those related to customer crypto devices.
• Demonstrated experience and familiarity with customer networks and devices, including both new and legacy systems, to ensure seamless integration and support.
• Demonstrated experience with troubleshooting and problem‑solving skills to troubleshoot complex technical issues related to customer crypto devices and develop effective solutions.
• Demonstrated experience with agile project management methodologies to work effectively in a team environment.
• Demonstrated experience with effective communication skills, both written and verbal, to effectively convey complex technical information to various stakeholders, including technical and non‑technical personnel.
• Demonstrated experience and ability to work in a matrix environment. This includes being able to navigate multiple stakeholders, priorities, and timelines.

A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Qualifications

Education

Preferred: Bachelor of Science or better in Engineering or related field.

Experience

15 years: Demonstrated related work experience.

Equal Opportunity Employer
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.