System Engineer
Confirmed on the employer's own hiring board on Oct 11, 2026. First seen by Alion on Oct 11, 2026.
EFA GROUP comprises companies in Aerospace, Security, Defense, and Industrial Cooperation with a solid international presence. EFA GROUP currently employs more than 400 people, the majority of whom are engineers and scientists. Headquartered in Greece, the Group maintains a strong international presence across Europe (Cyprus, Belgium, Switzerland, Estonia, and Germany), Asia (Singapore, Indonesia, and South Korea), the Middle East (UAE), and the United States, serving customers in 34 countries worldwide.
The GROUP includes EFA VENTURES (Supply Chain Management and integrated services), AEROSPACE VENTURES (Industrial Participation and related services), SCYTALYS (Systems Integration and Software), ES SYSTEMS (MEMs & IoT Integration), EPICOS (Global Defense B2B Information Platform), UCANDRONE (Unmanned Systems), AETHER AERONAUTICS (Target Drones), STHENOS AI (Intelligence Solutions), THYREOS CYBER (cyber security) , SUPERIOR AIR (aviation services and specialized aerial missions), SSMART (defense hardware - software production and services).
SCYTALYS is a leading defense software development and systems integration company, founded in Greece in 1993. Serving customers in the Aerospace, Defense, and Security sectors, the company delivers advanced software solutions focused on interoperability, situational awareness, and mission effectiveness. Its expertise spans Tactical Data Links, Command & Control (C2/C4I) Systems, Training, Testing & Simulation, and Surveillance & Reconnaissance solutions.
The Role
SCYTALYS is looking for a skilled and motivated System Engineer to support the design, integration, and lifecycle management of complex systems and systems-of-systems.
Key Responsibilities
- Analyze stakeholder needs and operational requirements to support system and subsystem definition
- Develop and maintain system architectures, requirements, interfaces, and design artifacts throughout the system lifecycle
- Apply MBSE principles and support the management of system models and requirements traceability
- Define, manage, and document system interfaces and interface control specifications
- Support integration, verification, validation, and acceptance activities by preparing test and compliance documentation
- Review system designs and ensure alignment with requirements, architecture, and project objectives
- Identify technical risks, trade-offs, and performance considerations and support mitigation activities
- Support system deployment, installation, and customer acceptance activities
- Collaborate with multidisciplinary engineering teams to ensure successful system delivery
- Contribute to the continuous improvement of systems engineering processes and methodologies
Requirements
- 3+ years of experience in Systems Engineering
- BSc in Computer Science, Electrical/Electronics Engineering, Systems Engineering, or a related field
- Experience in one or more of the following areas: Requirements Engineering, System Architecture & Design, MBSE, Integration Planning, or Verification & Validation
- Experience supporting technical specifications, requirements decomposition, and system design activities
- Working knowledge of system architecture principles, frameworks, and methodologies
- Familiarity with MBSE principles and SysML or similar modeling tools
- Knowledge of system interfaces and structured data formats such as XML and JSON
- Basic understanding of relational and non-relational databases
- Familiarity with Windows and Linux environments
- Understanding of computer networking concepts and architectures
- Willingness to travel to customer sites when required
- Fluency in English