Software 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.
SCYTALYS is looking for a motivated Software Engineer to help design and build our systems. You will translate requirements into well-architected, maintainable software, collaborate with experienced engineers, and contribute to the technical direction of the products you work on.
Key Responsibilities
- Perform detailed analyses of task requirements
- Write software development documents in accordance with the Company’s Engineering Documentation Standards
- Code software in accordance with the Company’s Software Development and Coding Standards
- Test and debug software (standalone test environment) with predefined test cases and verify predicted performance, memory, processor, and other requirements identified as requirements for the software
- Integrate software (Company designed and purchased) with other software to form a complete system or enhance system capabilities and performance
- Support test teams through the system integration and acceptance test phases
- Advise Company management regarding perceived and/or recognized problems with performance of designed software and/or system development
- Support installation and check-out on-site and hotline service or warranty/upgrade works at the installed systems
- Should the need arise, work towards your team’s goals carrying out tasks that may befall outside your field of expertise as best as you can
Required Skills:
- BSc or equivalent in Computer Science or Electrical/Electronics Engineering or related field
- Software programming skills in one or more of the following languages: C/C++, Java, Python
- At least 3 years of professional experience in systems programming and the development of native applications using C/C++, or Java and TCP/IP, UDP/IP networking
- Ability to read technical specifications, identify requirements, and provide software design to satisfy these requirements
- Ability to work on Windows and Linux systems and perform basic administration / automation tasks (e.g., shell scripting to create / debug installation and configuration scripts etc.)
- Good knowledge of Computer networking concepts and devices
- Solid understanding of XML and JSON
- Good knowledge of SQL, and experience with RDBMSs (SQLite, PostgreSQL) and NoSQL databases (Redis)
- Application compile, debugging, profiling, and optimization
- Good interpersonal skills to work effectively within a team
Nice to Have
- Experience with Angular, React, or Vue
- Knowledge of microservices architecture, RESTful/gRPC APIs, and reactive programming
- Experience with C/C++, Kafka, RabbitMQ, or ActiveMQ
- Familiarity with Maven/Gradle, Git, Docker, and Kubernetes
- Experience with database tuning, migrations, caching technologies (e.g. Redis), and geospatial databases
- Exposure to Defence, Security, or Command & Control systems
- Knowledge of Tactical Data Links, NATO standards, GIS, or OGC technologies