Principal Software Engineer

Principal Software Engineer – Cyber Security Research - On Site Barcelona - Zero to One Build I'm looking for a Principal Software Engineer to join a next generation Cyber Security Research start up based in Barcelona (You do not need Cyber Security experience to apply), who are building mission critical systems that protect national security interests across Europe. Given the importance of this position, we need someone who can be on site 5 days a week in Barcelona. You'll be solving hard problems around distributed execution, workflow durability, secure orchestration, disconnected environments, and large scale system resilience, sitting at the intersection of cybersecurity and government technology. It's designed for self hosted and hybrid environments where data sovereignty, privacy, and uncompromising security are non negotiables. They're not building another SaaS tool, they're building resilient, sophisticated infrastructure that matters. The Opportunity: They're looking for a Pri...