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About the role
Design and implement scalable backend services in Go that improve operator decision-making and response. Build high-performance APIs that power customer-facing workflows and internal platform capabilities.
What they're looking for
- You care about building systems that have real-world impact, especially in national security and defense of democracies
- You’re excited by hard backend problems: throughput, latency, correctness, and operability under pressure
- You take pride in clean interfaces—APIs that are intuitive, consistent, and built to evolve
- You think in systems: data models, services, and workflows that work together reliably
- You’re pragmatic and iterative—ship value quickly, then harden, measure, and improve
- You collaborate well across disciplines, communicate clearly, and welcome direct feedback
More about this role
America is under sustained cyber attack. Our adversaries infiltrate our networks, steal our IP, and degrade the digital infrastructure that modern life runs on. They’ve learned—correctly—that those attacks rarely produce consequences.
Twenty was founded to change that, by making our adversaries think twice before they attack us. Our vision is American and allied primacy in cyberspace—a future where they cannot contest us, deterrence is assured, and the free world remains secure.
Founded in 2024, Twenty Technologies ( www.twenty.io ) industrializes offensive cyber operations for the U.S. and its allies. Headquartered in Arlington, Virginia, Twenty has raised $168M from Khosla Ventures, Accel, Caffeinated Capital, Friends & Family Capital, Point72 Ventures, General Catalyst, and In-Q-Tel.
Mission | On Site | Full Time | U.S. Citizenship Required / No Active Clearance Required
You’ll build the backend systems that power Twenty’s cyber and electromagnetic capabilities—software that ingests real-time operational signals, models complex relationships, and serves high-throughput APIs at machine speed. You’ll design and ship reliable services in Go, working with known-hard problems like...
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