Sigma Defense

Software-driven CJADC2 and C5ISR systems

Senior Software Developer

Backend EngineeringConfirmed live in the last 24 hours

Full-timePatuxent River, MD, USA

About the Job

Requirements

Five to eight years of software developer experience.
Five to eight years of experience developing Java applications.
Five to eight years of experience developing and deploying code in Linux environments; Red Hat Enterprise Linux is preferred.
Zero to two years of experience creating containerized microservice applications.
Must be a U.S. citizen.
A bachelor's degree from an accredited college or university in Engineering, Mathematics, Computer Science, Computer Engineering, Information Technology, Information Systems, or Electrical Engineering.
Must possess or be able to obtain an active Secret security clearance or higher; clearance sponsorship is not available.

Responsibilities

Assist in developing Java applications supporting either a large enterprise Tactical Open Mission System application or smaller microservice Application Based Architecture applications.
Support application deployment and integration using knowledge of Red Hat Enterprise Linux execution environments, including Linux command-line interface commands.
Understand and use containerized applications and hypervisors for Application Based Architecture application hosting.
Create scripting solutions and standalone applications to resolve smaller-scale problems and support Software Support Activity requests.
Assist with ongoing implementation of the Agile development methodology.
Support efforts to remove engineering-team impediments to ensure on-time delivery and completion of sprints and deliverables.
Support development, design, and architecture recommendations for current and future PEO C4I software and hardware baselines.
Support design solutions integrated into common network or hardware baselines or environments.
Develop and provide input to functional, allocated, and product baseline engineering documentation and design-related technical briefs.
Implement Agile development methodology and participate in planning activities using product-owner-directed Agile tools.
Provide management support for enterprise Linux architectures; support building, configuring, and securing Linux and CoreOS virtual machines, operating systems, and applications, and integrating them into an enterprise architecture.
Configure VMware hypervisors.
Develop test plans and functional test objectives to ensure software and hardware baselines satisfy requirements.
Develop system installation procedures.
Create automated Windows and Linux bare-metal deployment strategies.
Install and configure applicable technologies and harden them in accordance with Defense Information Systems Agency Security Technical Implementation Guides, Security Requirements Guides, Risk Management Framework, Computer Task Orders, and other best practices.

Desired Qualifications

Experience with P-8A Application Based Architecture.
Experience with P-8A Tactical Open Mission System.
Experience with the MINOTAUR Family of Systems.

1655 - Senior Software Developer

Sigma Defense · Patuxent River, United States · Full-time · Posted 2026-11-03

Salary: USD 125,000–145,000

Workplace: on_site

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

Description

Sigma Defense is currently seeking a Senior Software Developer to support on site software development for PMA290 Software Support Activity (SSA) in Patuxent River, MD USA.

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

5-8 years of software developer experience.
5-8 years experience developing JAVA applications.
5-8 years developing and deploying code in Linux (RHEL preferred) environments.
0-2 years experience creating containerized microservice applications.
Must be a U.S. citizen.

Candidate Differentiators:

P-8A Application Based Architecture (ABA) Experience.
P-8A Tactical Open Mission System (TOMS) Experience.
MINOTAUR Family of Systems (MFOS) Experience.

Computer Programs/Software:

Linux
RHEL
Java
Python
Atlassian Tools
Docker

Personnel Clearance Level:

Candidate must possess or have the ability to obtain an active Secret security clearance or higher.
A clearance will not be sponsored.

Education Requirements:

Bachelor's degree from an accredited college or university in Engineering, Mathematics, Computer Science, Computer Engineering, Information Technology, Information Systems, or Electrical Engineering.

Essential Job Duties (not all-inclusive):

Assist in the development of JAVA applications supporting either large enterprise TOMS application or smaller microservice ABA applications.
Support deployment and integration of applications through knowledge of RHEL execution environments, including a solid understanding of Linux CLI commands.
Understanding and use of containerized applications and hypervisors for ABA application hosting.
Create scripting solutions and standalone applications to resolve smaller scale problems and support SSA requests.
Assist in on-going implementation of the Agile Development methodology.
Support all efforts to remove impediments of the engineering team to ensure on time delivery and completion of sprints and deliverables.
Support the development, design, and architecture recommendations for current and future PEO C4I Software (SW) and hardware (HW) baselines.
Support design solutions integrated into any common network/hardware baseline or environment.
Develop and provide inputs to functional, allocated, and product baseline engineering documentation, design-related technical briefs.
Implement Agile development methodology and participate in planning activities using PO directed Agile tools.
Provide management support of enterprise Linux architectures and support building, configuring, and securing Linux, and CoreOS virtual machines, operating systems/applications, and integrating these into an enterprise architecture.
Configure VMware hypervisors.
Develop test plans and functional test objectives to ensure that SW and HW baselines are satisfying all requirements.
Develop system installation procedures.
Create automated Windows and Linux bare metal deployment strategies.
Install and configure applicable technologies; hardening applicable technologies in accordance with Defense Information Systems Agency (DISA) Security Technical Implementation Guides (STIGs), Security Requirements Guides (SRGs), Risk Management Framework (RMF), Computer Task Orders (CTOs), and other best practices.

Salary Range: $125,000 - $145,000 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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