UI/UX Designer

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 UI/UX Designer to support the design of mission-critical Command & Control (C2/C4ISR) systems used in real-time operational environments.

Key Responsibilities

• Design user-centric interfaces for command, control, monitoring, and situational awareness systems
• Translate complex operational workflows and real-time data into intuitive user experiences and visualizations
• Create user flows, wireframes, mockups, interaction models, and prototypes for complex applications
• Apply usability, accessibility, and human-machine interaction principles to support effective decision-making
• Collaborate with engineers, product teams, and domain experts to align user experience with operational requirements
• Conduct usability assessments, gather user feedback, and drive iterative design improvements
• Ensure consistency, clarity, and usability across applications through the use of design standards and best practices
• Contribute to the development and maintenance of design systems and reusable UI components
• Support interface validation activities and ensure design requirements are successfully implemented

Requirements

• 3+ years of experience in UI/UX Design for complex software products or technical systems
• Bachelor's or Master's degree in Design, Human-Computer Interaction, Human Factors, or a related field, or equivalent practical experience
• Strong understanding of user-centered design, usability principles, and human-machine interaction
• Experience designing data-intensive interfaces such as dashboards, monitoring tools, or control systems
• Proficiency with design and prototyping tools such as Figma or similar platforms
• Ability to communicate and justify design decisions to technical and non-technical stakeholders
• High attention to detail and commitment to design consistency and usability
• Experience working within structured product development environments
• Strong collaboration, communication, and problem-solving skills