Senior Software Systems Engineer

Position Title: Senior Software Systems Engineer
Requisition : 1717
Position Location: Fairfax, VA
Position

Reports To:

Engineering Technical Lead
Supervises Others: No

Trident has built a reputation as a trusted provider of aerospace and defense electronics & processing systems including digital RF & Optical command and control solutions and atmospheric & airborne sensors. Our three operating units:
Space Electronic Systems (SES), Integrated C4

ISR Systems (ICS) and Optical Precision Systems (OPS), develop within the agile framework which enables us to produce proven, purpose-built systems that solve our customers’ mission critical challenges across space, air, land, and sea.

Trident’s Integrated C4

ISR Systems (ICS) specializes in products and services which improve the safety and survivability of our armed forces. We develop solutions for a wide range of demanding missions and environments, including tactical communications systems for multi-national interoperability, autonomous predictive maintenance and logistics solutions, and scalable, responsive, all-domain surveillance systems. Trident's integrated systems support the protection of the National Capital Region and various military installations both domestic and abroad.

We can deliver innovative, high-performance solutions that meet our customers' evolving requirements by integrating our specialized knowledge in electronic systems with appropriately scaled development methodologies.

The Software Systems Engineer will support the architecture, modeling, and documentation of complex, cloud-enabled C4

ISR and data-driven systems. This role bridges systems engineering and software engineering, ensuring that system requirements, architecture intent, and implementation remain aligned as products evolve. The Senior Software Systems Engineer will apply model-based systems engineering (MBSE) practices using SysML and Cameo, while also maintaining clear and actionable technical documentation in wiki-based and diagram-based formats. The role requires close collaboration with software developers, Dev Ops engineers, product managers, and program leadership.

This role will directly support one of Trident’s key programs to ensure the development and documentation is accurate and maintained at a high level as well as participate in engineering, requirements, and architecture discussions for future capabilities.

• Develop and maintain SysML models in Cameo Systems Modeler representing system structure, interfaces, behaviors, and data flows.
• Support definition of system boundaries, external interfaces, and integration points across software, hardware, and network components.
• Maintain traceability from stakeholder requirements through architectural elements.
• Assist with trade studies, interface definitions, and design reviews.
• Create and maintain technical documentation in wiki platforms (e.g., Confluence or similar)
• Develop and update diagrams outside of Cameo, including architecture views, sequence diagrams, deployment diagrams, and C4-style representations
• Ensure documentation is clear, organized, and usable for engineering, program management, and customer stakeholders
• Maintain consistency between formal models, diagrams, and written documentation
• Participate in engineering design discussions and technical interchange meetings
• Support requirements clarification and change management processes
• Interface with program managers and technical leads to communicate system impacts of proposed changes
• Identify gaps or inconsistencies in system definitions and recommend improvements
• Support definition and maintenance of verification strategies to ensure system requirements are testable and traceable
• Maintain traceability from requirements through architecture to verification methods (analysis, inspection, test, demonstration).
• Collaborate with Government engineers to ensure system architecture supports testability and observability.
• Participate in design reviews to ensure architectural decisions support verification objectives.

• Bachelor’s degree in Systems Engineering, Software Engineering, Computer Science, or related…