Twenty is seeking an exceptional Senior Engineering Manager for an in-office position in its Arlington, VA office to lead our core engineering teams building revolutionary cyber technologies that protect democracies worldwide. We're looking for a proven technical leader with 8-10 years of software engineering experience including 4+ years in engineering management, with deep expertise across frontend, backend, full-stack, AI/ML, and data engineering disciplines. In this role, you'll directly manage and mentor engineering teams spanning React/TypeScript frontend engineers, Golang backend engineers, full-stack engineers, AI/ML engineers, and data engineers who build our graph database-powered cyber operations platforms. You'll drive technical excellence, establish engineering best practices, coordinate cross-team initiatives, and ensure on-time delivery of mission-critical capabilities that support U.S. national security operations. You'll partner closely with product managers, cyber operations experts, and senior leadership to translate operational requirements into technical roadmaps while building a world-class engineering culture. If you're passionate about leading technical teams, solving complex engineering challenges, and making a direct impact on national security, we want to talk to you. About the Company At Twenty, we're taking on one of the most critical challenges of our time: defending democracies in the digital age. We develop revolutionary technologies that operate at the intersection of cyber and electromagnetic domains, where the speed and complexity of operations exceeds human cognition. Our team doesn't just solve problems – we deliver game-changing outcomes that directly improve national security. We're pragmatic optimists who understand that while our mission of defending America and its allies is challenging, we can succeed.