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.