Principal Software Engineer (C++), Koropi Hybrid (4-1)

Our clients is Greece’s premier defense software house,a NATO-registered leader in tactical communication systems—we are seeking a Principal Software Engineer. This is a high-stakes technical leadership mandate. You will architect the systems that synchronize armadas and ground forces in real-time, owning the delivery of flagship products across Land, Sea, and Air domains.

About the Company

A cornerstone of European defense technology, this organization builds sophisticated, ground-up software for multinational NATO programs and EU R&D. With a surging project portfolio, they focus exclusively on long-term, permanent hires to ensure the continuity and integrity of mission-critical systems.

The Role

Stepping into a position of high authority, you will lead the Tactical Communications Section as the primary technical voice for a team of approximately 10 senior engineers. This role demands a top-tier C++ expert who bridges the gap between complex high-level architecture and hands-on technical mentorship. As the lead architect, you will ensure the highest standards of performance and reliability while navigating multi-year projects via structured Waterfall methodologies. Beyond managing technical quality through rigorous code reviews, you will represent the software division in high-level strategic meetings with Directors and Heads of Engineering, staying "in the weeds" daily to solve the most complex architectural bottlenecks and drive mission-critical delivery.

What You Bring

• Mastery of C++: 10+ years of experience, with the presence and expertise to act as the "Top Expert" for the team.
• Leadership Pedigree: 3+ years of experience managing senior-level engineering teams.
• Linux Ecosystem: Deep experience in Linux programming and its complete development ecosystem.
• Modern Pipelines: A strong understanding of software engineering pipelines with a specific emphasis on DevSecOps (Security-first CI/CD).
• Domain Expertise: Proven background in telecommunications or tactical/defense communications systems.
• Academic Foundation: A degree in Engineering, Computer Science, or Software Engineering.

Great to Have

• Proficient knowledge of Network Programming.
• Deep understanding of the IP stack and network applications.

What's in it for You

• Hybrid Structure: To maintain the high-security standards and collaborative nature of defense engineering, the role follows a 4-day office / 1-day home schedule.
• Financials: Up to €64,000 gross annual salary + an additional Annual Allowance (Card).
• Executive Perks: Company car, private insurance from Day 1, and dedicated company parking at the Koropi facility.
• On-site Amenities: Low-cost staff restaurant and a modern, secure working environment.
• Stability: A permanent, multi-year career path within a growing organization at the forefront of global defense.