Sigma Defense

Software-driven CJADC2 and C5ISR systems

Systems Engineer 3

System AdministrationUpdated on Nov 11

Full-timeNorfolk, VA, USAIn-person

About the Job

Requirements

Ten years of full-time professional experience in systems engineering, including two years of full-time system-level experience in requirements definition, system design parameters, concepts of operation, risk assessment, productivity studies or analyses, performance analyses, test and evaluation, or post-delivery support of COE or EW systems.
Three years of full-time professional experience with operating systems, including Windows and Linux.
Three years of full-time professional experience as a Linux system administrator.
Three years of full-time professional experience with hardware and software configuration management for tracking bugs, enhancements, requirements, risks, test results, and tasks.
Three years of full-time professional experience in system and network security activities, including designing, implementing, configuring, and enforcing security controls on network, hardware, and software components and devices.
One year of full-time professional experience supporting total life-cycle system design, or equivalent academic background.
Must be a U.S. citizen.
Must possess an active TS/SCI clearance or higher; clearance sponsorship is not available.
Must have a bachelor's degree from an accredited college or university in Mechanical, Electrical, or Computer Engineering.

Responsibilities

Assist on a Navy contract.

1335 - Systems Engineer III

Sigma Defense · Norfolk, United States · Full-time · Posted 2026-11-10

Salary: USD 100,000–150,000

Workplace: on_site

Department: IMS (IMSENG, IMSPRG, IMSNM, IMST&R)

Description

Sigma Defense is seeking a Systems Engineer III to join our team and assist on a Navy contract.

Equal Opportunity Employer/Veterans/Disabled: Sigma Defense Systems is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

Requirements

10 years of full-time professional experience in systems engineering, with 2 of the years being full-time experience at the system level in any of the following areas: requirements definition, system design parameters, concepts operation, risk assessment, productivity studies/analyses, performance analyses, test and evaluation, post-delivery support of COE or EW Systems.
3 years of full-time professional experience in each of the following skillsets/disciplines:
Operating Systems experience in Windows and Linux.
Linux System Administrator.
Hardware and Software configuration management of tracking bug, enhancements, requirements, risks, test results, and tasks.
System and Network Security related activities to include design, implementation, configuration and enforcement of security controls on network, hardware, and software components and devices.
1 year of full-time professional experience support of total Life-Cycle system design or equivalent academic background.
Must be a U.S. citizen.

Personnel Clearance Level:

Candidate must possess an active TS/SCI clearance or higher.
A clearance will not be sponsored.

Education Requirements:

Bachelor's degree from an accredited college or university in Mechanical, Electrical, or Computer Engineering.

Salary Range: $100,000 - $150,000 annually

Benefits

Dental and Vision Insurance
Medical Insurance to Include HSA, FSA, and DFSA Plans
Life and AD&D coverage
Employee Assistance Program (EAP)
401(k) Plan with Company Matching Contributions
160 Hours of Paid Time Off (PTO)
12 (Floating) Holidays
Educational Assistance
Highly Competitive Salary

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About the Company

Sigma Defense

Software-driven CJADC2 and C5ISR systems

Sigma Defense provides software-driven solutions that improve military communications and decision-making. It specializes in integrating advanced technologies, data analytics, and communication networks to create interoperable systems that share real-time information across all military services and agencies. Its CJADC2 focus means it bridges legacy systems with modern technology to speed access to data and enhance decision-making through sensor analysis and strong network security. The portfolio includes C5ISR, SATCOM, and DevSecOps, and features a Tactical Relay System (a U.S. Government Program of Record) that transports and distributes tactical ISR data. The company uses DevSecOps to enable rapid, secure deployment of capabilities to front-line users, with a team of veterans and technologists developing hardware and software solutions to improve decision quality, speed, and certainty in military operations.

Company size: 51-200
Company stage: Not listed
Total funding: Not listed
Headquarters: Warner Robins, GA
Founded: 2006

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