Full-Stack Engineer (React & Java)

Position Details
• Working Model: Hybrid
• Employment Type: Full-time

SCYTALYS is a leading software development and system integration company, operating internationally with its main offices in Athens. The company counts more than 30 years of operation in the Defense and Security sectors, where it specializes in the specification, design, development, integration, installation, testing and follow-on support of:

• Tactical Data Links and Interoperability Solutions
• Mission and Command & Control Systems
• Surveillance solutions

SCYTALYS is currently looking for a skilled Software Engineer passionate about their field of work.

What you’ll do

• Design, develop and maintain responsive, mission-critical web applications using React (front end) and Spring Boot (back end).
• Build reusable, modular components and services to ensure code reusability, maintainability, and scalability across the application stack.
• Design and implement RESTful APIs, data models and integration with databases or other back-end systems and interfaces.
• Collaborate with cross-functional teams — product managers, UI/UX designers, other engineers — to translate requirements into robust technical solutions.
• Participate in code reviews, provide constructive feedback, and help enforce high code quality and best practices.
• Communicate progress, challenges, design decisions and solutions clearly with team members and stakeholders (both technical and non-technical).
• Take ownership of features or modules from conception through deployment and maintenance, ensuring reliability, performance and security.

What we expect from you

Minimum (Mid-level):

• ~3+ years of professional experience in full-stack web development.
• Strong experience with React (or similar modern front-end frameworks).
• Solid experience with Java and Spring Boot (or equivalent) for back-end development.
• Good understanding of REST API design, database modeling and integration with SQL/NO SQL databases.
• Comfort working in a structured development workflow (e.g., version control, code reviews, branching, CI/CD).
• Strong problem-solving skills, attention to code quality, maintainability and performance.

Senior-level:

• 5+ years of full-stack development experience, ideally building production-grade, mission-critical systems.
• Experience in designing and architecting scalable and maintainable systems (microservices or modular monoliths, depending on architecture).
• Experience with code architecture, design patterns, automated testing, performance optimization, and secure coding practices.
• Proactive mindset: ability to take initiative, identify technical debts or architectural improvements, mentor junior team members, and help raise the overall team’s technical level.
• Ability to communicate complex ideas clearly, both technically and to non-technical stakeholders; strong collaboration across teams.

Nice-to-have / Preferred

• Previous experience in defense, aerospace, or other mission-critical / high-reliability domains.
• Familiarity with DevOps practices, containerization (e.g. Docker / Kubernetes), automated deployments, CI/CD, and infrastructure-as-code.
• Experience with frontend state management, complex UI design, performance-sensitive rendering, and responsive design best practices.
• Experience with geospatial data, mapping libraries or real-time tracking.
• Familiarity with code quality, static analysis or linting tools.

What we offer

• Competitive remuneration package
• Private Medical Insurance package
• Continuous learning in new technologies
• Opportunity to work in large-scale projects with talented people