Senior Accountant

Twenty • Arlington, Virginia • Full Time

Posted on Thu, Jun 11, 2026

About the Company

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 $38M from Caffeinated Capital, General Catalyst, and In-Q-Tel.

Role Summary

We are seeking an Accounting professional to join our growing Finance and Operations team as the first full-time Accounting hire. This role is central to our core business operations, focused on establishing and managing efficient and audit-ready financial processes. You will own the foundational financial workflows essential for a high-growth software company, managing today’s business requirements while anticipating the requirements for scale. AI-native tools will factor heavily into how you build the function.

This role will be of high interest to candidates with Big 4 (or equivalent) audit experience, high-growth startup accounting experience, and a passion for or interest in the defense technology and cybersecurity industries. You thrive in unstructured environments, and you enjoy the vast opportunity space to improve operations and create scalable systems.

What You'll Do (Core Responsibilities)

Qualifications

Nice to Have

Benefits
What's on the table:

Benefits vary by location, role, and eligibility. Full plan details provided during the interview and offer process.

If this role sounds like you, apply and share with us your interest.

Some positions may require eligibility to obtain a U.S. Government security clearance. Any clearance requirement will be listed in the role description.

Twenty is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, veteran status, disability, or any other protected status.

If you need a reasonable accommodation during the hiring process, let us know and we will work with you.

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